de1h

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httpslidepdfcomreaderfullde1h 134

Corporate Engineering StandardDesign Standard DE1H

Electrical Technology Network

DE1H

Design and Appl ication of Electrical ResistanceHeat Tracing for Pipelines

Table of Contents

1 User guidance 2

2

General 4

3 Design of Electr ic Heat Tracing 4

4 Special Appl ications or Considerations 10

5 Types of Heating Devices (Cables and panels) 15

6 Design Process 20

7 Manual Design Example 23

8 Design using Suppliers Software Based Programs 29

List of Figures

Figure 1 Flowpath Example 21

Figure 2

Minimum water flow in pipelines to prevent freezing 31

List o f Tables

Table 1

Typical Maximum Temperature Ratings for Non-Metallic PipeVessel Materials 7

Table 2 Typical Thermal Insulations for Traced Pipe 9

Table 3 Percent of Wattage for other than Rated Voltage 20

Table 4 Heating Jacket Selection Criteria 25

Table 5 Heating Cable Allowance for Valves 26

Table 6 Typical Heating Cable Allowance for Pumps in m (ft) 27

Table 7 Conversion of Common Heating Units 30

Table 8 Watts per square meter (square foot) heat loss ndash Flat Surfaces based on Polyisocyanurate (Code

1181) Thermal Insulation 30

Table 9 Adjustment Factors for other than Polyisocyanurate Insulation 30

Table 10 Design Basic Data checklist 32

Table 11

Pipeline Heat Loss ndash Watts per Foot (Wft) 33

Table 12 Pipeline Heat Loss ndash Watts per Meter (Wm) 34

Red text indicates revisions made in the August 2009 issue

Document revised August 2009 Entire document reaffirmed February 2008

Contact ValerieSLamisonusadupontcom by e-mail for more information This document may be used and reproduced for DuPont business only

Copyright copy 2001 2008 2009 EI du Pont de Nemours and Company All Rights Reserved (Unpublished)(Engineering) of 34

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DE1HDesign and Application of Electrical Resistance Heat Tracing for Pipelines reg

1 User guidance

11 Scope

This standard describes requirements and recommendations for the design and application ofelectrical resistance heat tracing systems as applied to the surface heating pipelines and vessels in

ordinary and hazardous (classified) locations for

a Freeze protection of service and process piping systems

b Maintaining specified temperature of process systems

12 Applicability

The guidelines contained in this standard are applicable to all sites and businesses at which DuPontandor designated contractor is responsible for the engineering design selection or specification ofpipeline or vessel heating systems Regulatory requirements and application examples are provided

for National Electric Code (NECreg) and International Electrotechnical Commission (IEC)installations

13 Benefits

Adhering to the guidelines in this standard will provide the following benefits

bull Understand and apply NECreg and IEC requirements for safe installations

bull Understand industry terminology and how it applies to system design

bull Integrate industry practices with DuPont standard practices for thermal insulation piping andpipe supports

14 Definitions

Controlled Design Design basis where a temperature control device is required to limit themaximum pipe temperature to a determined value (Refer to section 45 for additional information)

Electrical resistance heat tracing The utilization of electric heating cables other electric heatingdevices and support components that are externally applied and used to maintain or raise thetemperature of fluidsmaterials in piping vessels and associated equipment Also referred to aselectric trace heating (IEC)

Heat loss The quantitative loss of energy flow from a pipe vessel or equipment to the surroundingambient

Heat-transfer aids Thermally conductive materials such as metallic foils (commonly self-adhesivealuminum tape) or heat transfer cements used to increase heat-transfer rates from the heating

device to the process piping or equipment

Maintain temperature Specified temperature of the fluid or process material that the heat tracing isdesigned to hold at equilibrium under specified design conditions

Maximum continuous exposure temperature (heater de-energized) The highest temperature towhich a component of the heat-trace system may be continuously exposed


Copyright copy 2001 2008 2009 EI du Pont de Nemours and Company All Rights Reserved Used under Copyright License Page 2 of 34

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DE1HDesign amp Application of Electrical Resistance Heat Tracing for Pipelinesreg

Maximum in termit tent exposure temperature (energized or de-energized) Highest allowabletemperature to which a heating device or components may be exposed for a period of time asdeclared by the manufacturer (Example High temperature excursions of not more than 48 hours induration with a cumulative exposure of not more than 1000 hours)

Maximum maintain temperature Specified maximum temperature of a surface or process that theheating device is capable of maintaining continuously

Rated output Powerunit length of a heating device or total power at rated voltage andtemperature (if self-regulating) normally expressed as Wm (Wft) or kW

Rated vo ltage The voltage to which operating and performance characteristics of a heating deviceis referred

Runaway pipe temperature The highest equilibrium pipe temperature that occurs when theheating device is continuously energized at the maximum ambient

Sheath temperature The temperature of the outermost continuous covering of a heating cable orsurface-heating device (panel) that may be exposed to the surrounding atmosphere

Stabilized Design Design basis where the characteristics of the heating device limit the maximumsheath temperature to a determined value without the need for a high-temperature limit controldevice (Refer to section 45 for additional information)

Temperature Class (T-rating) One of the values of temperature allocated to electrical heatingdevices derived from a system of classification according to the maximum surface temperature ofthe heater Also referred to as T-class Identification Number T-rating or Temperature Code

15 References

DuPont Engineering Standards

DE1D Electrical Area Classification for Flammable Gases and Vapors

DE6H Temperature Control of Electric Surface Heating for Pipelines and Vessels

DR1K Heat Tracing for Instrument Installations

DX3S Interlock Design

E7K Electrical Pipeline Heat Tracing Installation Details

E10K Electrical Heat Tracing for Freeze Protection of Safety Showers

P25F Laid Pipe Supports - Rests Guides and Anchors Insulated Pipe

PE43 Commissioning and Maintaining Electrical Resistance Heat-Tracing System

SE323B Electric Heat-Trace Cables and Panels

SE404B Thermostats for Pipeline and Vessel Heating CircuitsSN400A Insulation Systems for Traced Pipe + 75 to 500oF (+ 24 to 260oC)

SN4D Coding system for Drawings and Models

SN100M Code Specifications for Preformed Block and Pipe Insulation



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Other References

ANSINFPA 70 National Elec tr ic Code (NECreg) Specifically articles 426 427 and 500 501 and

505 that apply to the application of electrical heating of pipelines and vessels

ANSIIEEE Standard 515 Standard for the Testing Design Installation amp Maintenance of ElectricaResistance Heat Tracing in Industrial Applications

ANSIIEEE Standard 5151 Standard for the Testing Design Installation amp Maintenance ofElectrical Resistance Heat Tracing in Commercial Applications

IEC 60826 Electrical Resistance Trace Heating in Potentially Explosive Atmospheres

2 General

This standard provides requirements and recommendations for the design selections andapplication of electrical resistance heat tracing (trace heating) as applied to pipelines and vesselsThe basic information can also be applied to pre-traced and thermally insulated instrumentanalyzertubing and mechanical equipment The electrical resistance heat tracing is most often in the form of

self-regulating heating cable but can also include power-limiting cable series resistance cable MI(Mineral Insulated) cable parallel constant-wattage (zone) cable and surface heating devices (tankheating panels) Requirements are included for application in unclassified and classified(hazardous) locations

The standard is structured as a tutorial providing essential information related to pipeline andvessel heating It is based on the assumption that all but the most basic applications will usesoftware-based programs to execute the design calculations and select the heating device

3 Design of Electr ic Heat Tracing

One of the first issues that arise in freeze protection applications is determining the cut-offconditions when a pipeline or system does not require the application of heat tracing to prevent

freezing Depending on geographic location the use of climatic data can provide the expectedduration and minimum temperatures for a given area There are many applications where constantwater flow in a system is sufficient to prevent freezing and in other cases where the addition ofthermal insulation alone can prevent freezing Refer to Figure 2 for a graph showing the relationshipof water flow to freeze time for typical pipelines

Unless specifically identified as a heat-up or melt-out application the design basis for pipeline andvessel heating is to replace heat lost to the environment also referred to as heat-balance Thecalculation of heat-loss at the desired maintenance temperature assumes that the material is non-flowing at the specified minimum ambient temperature is based on the specific type and thicknessof the installed thermal insulation and compensates for wind in outdoor applications and applies asafety factor It is the normally the responsibility of the designer to compile all information required

to provide a design that meets the intended use is reliable and meets regulatory requirementsInformation required to design a single circuit or a complete system is tabulated in a standard form(Design Basic Data Checklist - Table 10) that addresses the following required information

bull Defining site data

bull Defining the heating application(s)

bull Establishing temperature constraints of the material(s) to be heated



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bull Defining physical properties of the pipeline vessel and thermal insulation system

bull Defining the electrical system

bull Defining the installed environment

bull Defining special requirements such as melt-out or heat-up

The following design section follows the format of the Design Basic Data Checklist (Table 10)

31 Site Information

Site information consists of parameters that are applicable across an entire site (plant) or entireproject and normally includes

Minimum Ambient Temperature This value is especially important since it provides the basis forheat-loss calculations The value may be a generally accepted temperature at a specific site or canbe obtained from climatalogical data as the mean of annual extremes or lowest recordedtemperature If this value is too conservative it will result in unused capacity within the installedsystem if the value is too liberal then it is likely that at some point in the life of the system there willbe insufficient capacity to maintain the desired maintenance temperature

Maximum Ambient Temperature This value is primarily used in calculating the maximum runawaypipe temperature where the heater is continuously energized at the maximum ambient temperature

Design Wind Speed A value of 20 to 25 miles per hour (32 to 40 kilometers per hour) is commonlyused for outdoor applications (The DuPont recommended value is 25 mph above 25 mph the effecbecomes negligible)

Design safety factor The safety factor is a percentage value added to heat-loss calculations Thecalculation for heat-loss is based on theoretical values and does not compensate for variabilityresulting from factors that cannot be quantified or controlled Factors affecting this variability caninclude thermal insulation degradation supply voltage variation voltage drop in branch circuit andheating devices increased radiation or convection losses and quality of thermal insulation

installation Standard ANSIIEEE states a typical value of 25 The DuPont recommended valuesfor safety factors are 25 for freeze protection and 50 for process heating

Design basis Is the application and installation based on the National Electric Codereg (NEC)Division System (Article 501) Zone System (Article 505) or International ElectrotechnicalCommittee (IEC) Equipment approvals and design requirements will be different

32 Application Information

The process of defining the basic application is a first step in providing information that will be usedas the design develops in selecting the heating cable or panels method of control and circuiting(heater zones)

Determining that the basic category for the application is Process Heating Freeze ProtectionSafety Shower or a Tempered Water System is helpful in understanding how simple or complexthe system may be and what type of control or protective measures may be required or normallyemployed Refer to standard E10K for additional information on Safety Showers and TemperedWater Systems

If non-metallic pipe or vessels will be used then the temperature limitations of the materials willneed to be understood Suppliers normally recommend types of heating cable that are suitable foruse on non-metallic systems Heat-transfer aids normally in the form of self-adhesive aluminum



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tape may be required by the manufacturer to be placed over or under and over the heating cable onnon-metallic pipe and vessel applications

Pre-Traced and Insulated ins trument and analyzer tubing may be required as part of an overallheating system Selection and design normally requires manufacturer support for heat-losscalculations and specification

Freeze protection of steam condensate lines Depending on steam pressure can involve veryhigh temperatures than can exceed maximum temperature exposure ratings of heating cablesrequiring high ndashtemperature rated cables or placing the cable between two layers of thermalinsulation such as buffered pre-traced tubing assemblies

Spiraling of heating cables is not commonly used in DuPont application due to problems withremoving the cable for maintenance on any part of the line and in difficulty in properly providing thecorrect ldquopitchrdquo during installation

33 Process Information

Material in pipe Specific fluid or process material

LiquidGasVapor State of the fluid or process material

Pipe Maintain Temperature Specified temperature of the fluid or process material that the heattracing is designed to hold at equilibrium under design conditions For freeze protection the pipemaintain temperature is commonly 44oC (40oF)

Normal Process Operating Temperature Specified temperature of the fluid or processtemperature under normal operating conditions This temperature may be different than the pipemaintain temperature

Minimum Allowable Product Temperature Where temperature excursions may result inunacceptable conditions such as product degradation reduced quality or change of state Theremay be process safety limits in-place that need to be verified Where runaway pipe temperatures or

normal temperature swings in the installed system result in unacceptable temperatures the firstchoice should be to design for a stabilized design (inherently safe) solution If a stabilized design isnot possible then a controlled design solution will need to be applied and depending on risk mayrequire additional controls such as separate high-temperature limit controller Application softwareprograms use this value to determine when temperature control is needed

Maximum Exposure Temperature The highest temperature to which a component of the heattracing system may be exposed This temperature may be the result of normal processtemperatures that are higher than the pipe maintenance temperature or expected excursions Theexposure temperature may also be the result of steam-out or other normal procedures Thistemperature is used to assure that heaters are operated within their energized and de-energizedratings (see definitions for maximum continuous exposure temperature and maximum intermittent

exposure temperature) Check manufacturerrsquos specifications to determine if the heater ratings arebased on continuous or intermittent exposure with power-on or power-off

Type I Control A process where the temperature should be maintained above a minimum pointDepending on type of heaters used and method of control wide temperature excursions should betolerable and maximum energy efficiency is not required Examples of control are ambient sensingthermostat dead-leg sensing control and applications where large blocks of power are controlledfrom a single thermostat Monitoring and alarming requirements are minimal



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Type II Contro l A process where the temperature should be controlled within a tolerable bandPipeline temperature sensing devices along with facilities for monitoring and alarming are typical

Type III Contro l A process where the temperature should be controlled within a narrow band orapplications where critical to the safety or quality of a process or where heat-up or melt-outrequirements exist Pipe sensing thermocouple or RTD devices that provide temperature input toelectronic controllers with extended alarm and monitoring features are typical Redundantequipment may be warranted where circuit failures have safety consequences or unacceptablebusiness loss or where repairs need to be made without a process shutdown

34 PipeVessel Information

Along with the master set of pipe specifications maintained by Engineering many sites and projectshave their own system of Pipe Specifications Pipe specification for typical services can be found ina project or sites Product and Service Index At the line level pipe and tubing codes can beobtained from the Process amp Instrument Diagrams (PampIDs) Supplier software programs haveevolved to include heat loss calculations based on the pipe material and thickness (schedule)

Pipe or Vessel Material The information should include the specific pipe material such as CS(Carbon Steel) CU (Copper) SS (Stainless Steel) PVC (Polyvinylchloride) etc Non-metallic pipevessels have special concerns due to the low thermal conductivity (k-factor) which can be aslow as 1200 of steel which results in a high temperature difference across the wall depending onwatt-density Heat traced non-metallic materials normally require the use of heat transfer aids (seesection 47 for additional information) as defined by the manufacturer Following the manufacturerrsquosrecommendations for acceptable tracer type and installation requirements is essential The followingTable 1 provides typical temperature limits for non-metallic pipevessels

Table 1 Typical Maximum Temperature Ratings for Non-Metallic PipeVessel Materials

PipeVessel Material DuPont Pipe Code Typical Temperature Limi tation

Vinyl Ester (FRP) P1M series Varies from 60oC (140

oF) to 107

oC (225

oF)

Polyvinyl Chloride (PVC) P1N705 P1N722 Varies from 49oC (120

oF) to 54oC (130

oF)

High Density Polyethylene (HDPE) P0N1 P1N4 Varies from 378oC (100oF) to 107oC (225oF)

Polypropylene (PP) P1N8 P1N723 Varies from 378oC (100

oF) to 60

oC (140

oF)

Note The values in Table 1 indicate typical temperature limits for selected materials Actual pipe or vessel materialshould be checked against the projectsite specification

Schedule or Thickness Schedule or Thickness should be noted For US based applications pipeand tubing sizes will normally be based on inch units and the US pipe schedule system as definedby standard ANSIASME B3610 For IEC application all units will be metric for metric pipe

Special Conditions Pumps strainers or other equipment that will require heat tracing shouldbe noted

Pipe Support System The type of pipe supports used should be identified Pipe shoes especiallywelded shoes represent significant heat losses that must be compensated In high temperatureapplications all type of hangers may need additional heat Outside load bearing pipe supports arepreferred for heat traced systems since they do not require additional heat compensation and aremuch less prone to water engress



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35 Thermal Insulation Information

Thermal insulation information related to traced pipe systems can be found in several places Forspecific projects the thermal insulation ldquoThickness Indexrdquo is found on the PampIDrsquos along with thereferenced ldquoThickness Index Tablerdquo that is used to convert the maintenance temperature toinsulation thickness (See SN4D for thermal insulation coding) Most sites maintain an ldquoInsulationSpecificationrdquo which is a stand-alone document that is required to determine insulating materialsinstallation practices and insulation thickness for typical applications based on the sites standardpractices

Type and Thickness(s) Most DuPont applications will use Polyisocyanurate (-100 to 250oF) orExpanded Perlite (80 to 1000oF) or Mineral Wool (75 to 1200 oF) Calcium Silicate is notrecommended for outdoor applications due to hygroscopic properties Fiber Glass although popularfor commercial applications is not commonly in the industrial workplace in DuPont Refer to Table 2for typical thermal insulation types for heat tracing applications

K-FactorTemp Ratings are normally based on ASTM or other certifying agency Supplier softwareproblems normally include K-factor curves

Maximum Temperature Rating A certifying agency (ie ASTM) established temperature rangesIt is the responsibility of the designer to assure that the temperature rating is not exceeded based oncalculated maximum sheath temperature or runaway pipe temperature Supplier software programscan calculate maximum sheath temperature and runaway pipe temperature but may notautomatically flag exceeding these values as an error

Installed Oversize The physical space between the outer pipe wall and the inside of the pipethermal insulation is commonly too small to accommodate the heating cable when rigid thermalinsulation is used DuPont Thermal Insulation Specifications and DuPont Corporate StandardSN400A normally require the next larger insulation size to be used on traced pipe applicationsUnless the oversized insulation will not tightly fit over the tracer and pipe a ldquospacerrdquo is required tostabilize the insulation (Refer to specific Insulation Specification for additional information)

Removable or Special Insulation used Occasionally removable (soft) insulation covers are usedat valves flanges and equipment to facilitate maintenance and make it easier to spot leaks Whenremovable or special insulation is used on a project it must be identified and normally requiresadditional heat to compensate for reduced thermal efficiency with respect to the rigid pipe insulation



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Table 2 Typical Thermal Insulations for Traced Pipe

Insulation Type DuPont Code Temperature Range K-FactorMoistureResistance

Calcium Silicate 102 121 to 649oC

(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor

Expanded Perlite(preferred)

1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good

Mineral Wool(preferred)

114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair

Polyisocyanurate (preferred)

Freeze protection-outdoor use only

1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam

Freeze protection- indoor use only

1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good

Refer to SN100M for additional information related to insulation types and properties

36 Electrical System Information

Electrical system information is important to the design process

Voltage(s) Available Parallel heating cables and manufactured sets of series heating cables arerated at a specific voltage The difference between a 120 or 240-volt rating and a 100 208 230 or277 applied voltage is critical to the heater output The supply voltage should be identified at itsnominal rating unless it is standard site practice to operate at a different voltage

Phase and Hertz Provides information that can allow the designer flexibility in selecting central orgrouped control panels and in selecting cables to meet long cable (long line) runs

37 EnvironmentClassif ied Area Information

Chemical amp environmental exposure is determined by the type of process where the installation issited Normal selections are None Organics or Inorganics Fluoropolymer outer jackets arenormally selected for organic chemicals or corrosives Modified Polyolefin outer jackets are used foexposure to aqueous inorganic chemicals The DuPont Companyrsquos recommended practice is toalways provide an outer jacket with the normal selection of Fluoroploymer unless the application islimited to water service Mineral Insulated (MI) cables are available with in a variety of metal sheathmaterials it is important to identify the chemical exposure when selecting the sheath material

against published tables

Electrical Area Classification The area classification is based on the type of exposure (flammableliquids flammable gases or vapors combustible dust or ignitable fibers) using the method ofclassification recognized by the certifying authority and method of classification such as US-Division US-Zone Canadian-Zone IEC-Zone

Determin ing GasVaporAIT Hazardous areas often include more than one potentially flammablematerial The determining AIT is the material with the lowest Auto Ignition Temperature (AIT) AITrsquos



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are normally determined based on published data recognized by the certifying authority (NFPA APIand IEC)

Temperature Rating (T-Rating) For the US this would be the Temperature Identification Number For Canada it would be the Temperature Code and for IEC applications this value would be theTemperature Class Number chosen based on the determining AIT

Approvals Required All materials used in classified (hazardous) locations must be marked andlisted to meet the requirements of the certifying authority Heat Tracing cables or fabricated heatersets must also include temperature class or maximum surface temperature and applicable divisionof zone rating(s) as defined by IEEE-515 or IEC 62086-1 Some states or localities may requireDesign Documentation andor Calculations signed by a Professional Engineer (PE)

4 Special Appl ications or Considerations

41 Heat-Up or Melt-Out Applications

In special circumstances it may be necessary to specify that a heat-tracing system be capable ofraising the temperature of a stagnant or flowing material to a required temperature within a specified

period of time Most applications of heat-up or melt-out will involve a dedicated process heatingsystem If a pipeline or vessel is required to change the state or viscosity of a solidified materialthen the physical properties of the material must be defined along with the known properties of thepipeline thermal insulation minimum ambient starting and final temperature of the fluid and pipe

The DuPont Engineering - Heat Transfer and Mass Momentum group are skilled in calculating heat-up problems especially with DuPont manufactured material or when the material undergoes aphase change during heat-up or when the temperature of a flowing material must be raisedSuppliers have databases that allow them to perform heat-up calculations for common materialsbased on past experience Heat-up can be calculated in some supplier software programs but thephysical properties must be user supplied if other then water A manual calculation of heat-up forpipeline applications can be made using the formulas in standard ANSIIEEE-515 ndash Annex C

Refer to Design Basic Data Checklist - Table 10 for required material data for simple heat-upapplications

42 Runaway Pipe Temperature

For an uncontrolled system the maximum or runaway pipe temperature is calculated at themaximum ambient temperature with the heating device continuously energized The heating deviceoutput is based on the highest declared power output of the manufacturerrsquos tolerances Thefollowing formula for determining maximum or runaway pipe temperature is based on standard

ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where

Tpr = maximum pipe temperature (oC oF)

W = heating cable output at operating voltage and maximum pipe temperature (Wm BTUhr middot ft

K = thermal conductivity of the insulation at its mean temperature (Wm middotoC BTUhr middot ft middot

oF)

D1 = inside diameter of the thermal insulation (m ft)



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D2 = outside diameter of the thermal insulation (m ft)

Hco = inside air-contact coefficient of weather barrier (Wm2 middot

oC BTUh middot ft

2 middot

oF)

H1 = inside air-contact coefficient from pipe to inside of thermal insulation surface(Wm

2 middot

oC BTUh middot ft

2 middot

oF)

Ho = outside air film coefficient from weather barrier to ambient (Wm2 middot

oC BTUh middot ft

2 middot

oF)

Ta = design maximum ambient temperature

Calculated runaway pipe temperatures should be checked against temperature ratings of the pipematerial process concerns such as product degradation change of state or process safety limits Ifthe consequences of runaway pipe temperature are safety related refer to section 43 for applicationinformation If the consequences are limited to businessproperty loss then a stabilized design (seesection 44) is recommended and if it cannot be achieved then a controlled design should beconsidered as measured by acceptable business loss criteria

43 Sheath Temperature

For metallic pipe or tube applications the sheath temperature of a heating device should beconsidered to the extent that product ratings are not exceeded in the application This includes notonly the heating device materials but also the maximum temperature limitations of the pipe tube orvessel wall material or process material Standard IEEE-515 provides the formula for manuallycalculating this value and is used as the basis for supplier software program calculations Thesheath temperature for metallic pipe applications is

psh TUA

WT +=

Where

Tsh = the heating cable surface (sheath) temperature (oC oF)

W = Cable output (Wm Wft)

A = the heating cable area (from manufacturers information)

U = the overall heat-transfer coefficient (Wm2middot

oC Wm2 middot oF) Obtain from manufacturer orfor general estimation use 30 for self-regulating cable 25 for constant-wattage and 35for MI cable all strapped to pipe Use 25 for a MI cable covered with heat transfercement

Tp = the process maintenance temperature (oC oF)

44 Safety Critical or PSM Applications

Although rarely applied it is possible for the heating circuit to be identified as critical to safety or anunacceptable event as part of Process Hazards Review (PHR) Events such as runaway pipetemperature exceeding a specified limit or failure of a circuit to maintain a specified temperature inapplications such as relief valves or tank conservation vents may be identified Standard qualifyingprocedures such as those outlined in DX3S may be required to provide acceptable solutions

Solutions for over-temperature events always include stabilized design as the first consideration toprovide an inherently safe solution If a stabilized design cannot be achieved then a controlleddesign solution would be required



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Solutions for failure to maintain a minimum temperature may include redundant heating circuits fedfrom diverse power sources Independent temperature measurement that is not part of the basictemperature control system for the heater should be considered

45 Stabilized and Controlled Design Basis

The application of a controlled design solution is recognized in standard ANSIIEEE-515 and IEC

62086-1 with different test conditions In both standards the manufacturer determines themaximum surface temperature of the heating device For application covered by ANSIIEEE-515100 of rated voltage is used for ordinary area 110 for Class I II amp III - Div II Class I - Zone 1and Zone 2 areas and 120 of rated voltage for Class I II amp III ndash Div I areas In these tests themaximum surface temperature shall be less than 100 of the ignition temperature

Stabilized design basis (see definitions) should be the first consideration for selecting a heatingdevice (heating cable or heating panel) to meet the AIT requirements in hazardous (classified) area(potentially flammable atmospheres) in safety events or where unacceptable business lossconsequences are identified Stabilized design is an inherently safe solution and mitigates an eventby selecting a heating cable that in the worst case of expected operation will not exceed thespecified temperature

Controlled design basis (see definitions) is a second consideration in selecting heating device if astabilized design solution is not possible Hazardous (Classified) Area Applications (PotentiallyFlammable Atmospheres) permit the use of a temperature control device to limit the maximumtemperature For applications based on standard ANSIIEEE-515 When using a temperaturecontrol device without failure annunciation a separate high-temperature limit controller to de-energize the heating device shall be included in the design with either manual reset or annunciation

Alternately a single controller with failure annunciation can be used IEC based applications requirethe use of a temperature control device to de-energize the heating circuit permanently afterexceeding the maximum operating temperature A manual reset of the system by use of anappropriate tool shall be possible by hand after the temperature is within acceptable limits Thehigh-limit protective device shall be independent of the basic temperature controller and must besecured to avoid external manipulation

46 Hazardous (Classi fied) Area (potentially flammable atmospheres)

461 NEC

ndash Class I II amp III ndash Division 2

The heating cable and components shall be listed (approved) for both the Class I and Division2 and approved for the Group of the hazard present The heating device is also required toshow the operating temperature or temperature range referenced to a 40oC ambient If thetemperature range is provided it will be indicated by Temperature Identification numbers (oftencalled T-Class) as shown in NEC Table 5008(C) The identification number (T-Rating) of theheating device shall not exceed the ignition temperature of the specific gas or vapor tobe encountered (reference NEC 5008(D)(1) If the T-Rating has not been defined then the

lowest AIT is the maximum allowable sheath temperature Applications for Class II amp III application require that the heater utilization equipment beidentified for the specific class II or III location

462 NEC


The heating cable and components shall be listed (approved) for both the Class I and Division1 (C1D1) and approved for the Group of the hazard present The heating device is alsorequired to show the operating temperature or temperature range referenced to a 40oC



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system recognizes gas groups only and does not recognize equivalent Dust (Class II) orIgnitable Fibers (Class III) in the US system

In applying IEC-62086-1 the heating cable must be approved and surface marked or taggedwith the manufacturerrsquos name catalog or model number rated voltage and power output (orresistance per unit length) temperature classification type of protection apparatus group andcertifying agency The surface (sheath) temperature of the heater is limited to thetemperature classification or ignition temperature or lower

Zone 0 Electric heat tracing (trace heating) is not permitted in Zone 0 classified areas

Zone 1 The identification number (T-Rating) of the heating device is limited to thetemperature classification or ignition temperature or lower for the gasvapor present inthe area Select a heating cable that is approved for Zone 1 applications and the specificGroup that does not exceed the ignition temperature


Typical cable marking for IEC zones Example ldquoII 2 G EEx e II T6rdquo

Where

II = Suitable for surface heating (I is mining)

2 = Category 2 = Zone 1 or zone 21 (Category 1 = zone 0 (gas) or zone 20 (dust)Category 3 ndash zone 2 or zone 22)

G = Indicates Gas (D would be used for dust or both may appear)

E = European standard

Ex = Explosion Protected

e = Increased Safety Type of Protection (may also include a secondary method ofprotection such as ldquomrdquo for encapsulated or potted elements)

II = Gas Group use of ldquoIIrdquo to be inclusive for gas groups IIA IIB and II

T6 = Temperature Class (T-Rating)

47 Heat Transfer aids (or non-metallic heating)

Heat transfer aids are used in special circumstances to improve the thermal conductivity of theheating device Each heating device has a specific U (heat-transfer coefficient) that is dependent

on the device geometry installation method and system configuration It is a combination ofconductive convective and radiation heat-transfer modes

Heat transfer material (HTM) can be used to improve the thermal conductivity in MI heatingapplications The value of U can vary from 22 for a cylindrical MI cable in air (primary convectivemode) to 30 or more with a MI cable with HTM (primarily conductive mode) This method ofinstallation can often be used to increase the amount of heat transfer to reduce the number ofheating cables required by as much as 4X and can also be used to lower the sheath temperature atthe point of heating



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Self-Adhesive Aluminum Heat-transfer Tape is commonly used in the application of heatingcables to non-metallic pipe and vessels where vessels (tanks) In most cases the tape is appliedover the heating cable to secure it to the surface to be heated Without the correct application ofheating cables and correct installation of the aluminum tape the heating device and or non-metallicmaterials maximum allowable temperature rating may be exceeded

When self-regulating heating cables approved by the manufacturer for non-metallic applications areused along with aluminum heat transfer tape the overall efficiency is improved but not equivalent toefficiency of a metal pipe installation The result is an increased temperature across the non-metallicmaterial wall and an increase in the core temperature of the heater with a subsequent loweredoutput based on the positive resistance coefficient characteristics of the self-regulating heaterManufacturers can predict the specific adjustment factors and have incorporated them into theirsoftware based design programs Approximate adjustment factors to be applied to heating cablesinstalled on non-metallic pipe or tank wall with self-adhesive aluminum tape applied over the heaterare 80 for Fiberglass Reinforced polyester (FRP) pipe or tanks and 70 for polypropylene pipe orvessels This factor would be an additional derating of the cable after any derating for maintenancetemperature and if required for supply voltage

5 Types of Heating Devices (Cables and panels)

The two prevailing standards on resistance heating devices (ANSIIEEE-515 and IEC 62086-1)include two basic categories of heating devices Series Heating Cable (Series Trace Heaters) whichinclude the families of series resistance heating cables and MI Heaters and Parallel Heating cables(Parallel Trace Heaters) which include the families of self-regulating power limited and ConstantWattage (Zone) heating Cables Refer to SE322B for information on heating cables amp heatingpanels from the DuPont Companyrsquos two strategic heating suppliers (Thermon and Tyco-Thermal)Specific types of the most commonly used heaters include the following

51 Self-Regulating Heating Cable

511 Self-Regulating heater cables represent the most commonly used type of resistance

heating cables in use and are recommended for continuous operation under the followingconditions

a Voltage This family of heaters is commonly rated to a maximum of 277V The firstchoice for voltage should be 120 Volt then 208 or 240 Volt if required by circuit lengththen 277V only when required for personnel safety issues Specific voltage labelsshould accompany any voltage above 120 Volts to ground on surface of the heatersystem along with the required Caution-Electric Traced Pipeline labels For IECapplications branch-circuit voltages of 230 or 240 Volt are common

b Temperature Self-regulating heater cables are rated for maintain temperatures from65oC to 149oC (150oF to 300oF) and maximum exposures temperatures from 85oC to204oC (185oF to 400oF) power-off

c Maximum Wattage 66 Wm 10oC (20 Wft 50oF)

512 The heating element in this cable is a conductive polymer between two copper bussconductors The positive coefficient of resistance to temperature causes the heating elementto produce less heat (higher resistance) as its temperature increases This cable is availablein several ldquofamiliesrdquo with different temperature voltage watt density ratings and different outer

jacket material The cables can be cut to length without changing ratings



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513 Potential issues in the application of self-regulating heating cables are

a Failure to compensate for the actual output when operated at temperatures other thanthe rating temperature Self-regulating cables are commonly rated at 10oC (50oF)depending on the rate of change in watts per degree Fahrenheit or Celsius for thespecific family of cables the power output at temperatures other than 10oC (50oF) canbe predicted The manufacturer provides power output curves for each cable family orsoftware programs can be used to determine actual power output at the operatingtemperature

b Adjust cable output when operated at other than rated voltage

c Adjust cable output when applied to non-metallic pipes Consult manufacturerrsquosliterature for power curves and voltage adjustment factors

d Self-regulating type long-line heaters are commercially available and commonly requirea three-phase voltage source Three-phase self-regulating long-line heaters havehistorically been problematic in DuPont and are not generally recommended (refer tosection 53 for series resistance heating cables)

514 Standard ANSIIEEE-515 ndash The type tests in this standard assure a very robust heatingcable to industry The deformation cold bend and impact tests assure a cable is tolerant ofhandling and use in industrial applications Thermal performance benchmark elevatedtemperature exposure dielectric flammability and verification of rated output and start-upcurrent tests provide a common benchmark across suppliers IEC tests are based on allowingthe marketplace to determine heating cable properties and do not require the same level oftesting or results It is recommended that all heating cable used in DuPont meet the testingrequirements of ANSIIEEE-515

52 Mineral Insulated (MI) Heating Cables

521 MI heating cables are available as standard catalog sets and as custom engineered

heater sets in types of metal sheath material and are recommended for continuous operationunder the following limitations

a Maximum voltages of 600 V and 300 V rms depending on suppliers type

b Temperature range Copper Sheath up to 190oC (375oF) under normal sheath oxidationconditions and up to 252oC (485oF) if slow oxidation is permissible Stainless steelsheath up to 427oC (800oF) Inconel (Alloy 600 and 825) sheath up to 593oC (1100oF)

c Maximum wattage Determined by sheath temperature

522 MI Heaters are widely used when the temperature ratings of self-regulating or powerlimited heating cables are exceeded or where used in high watt density applications Themetal sheath of MI cable provides a reliable ground under the most difficult or hazardousconditions The seamless sheath and brazed joints are completely waterproof Heat transferaids such as HTM are sometimes used to improve thermal conductivity in high watt densityapplications

523 MI heaters are available in pre-fabricated sets of single conductor with terminations ateach end of the cable and two conductor with a single termination in various standard voltageand watt densities Each set consists of a heated section and a cold lead between the heatedsection and the terminations MI cables are also available in custom lengths and design asengineered Field fabrication of MI cables is not commonly done or advised unless specially



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trained by the manufacturer Standard catalog and engineered units are available withhazardous area approvals to meet division and zone requirements

524 MI heaters are commercially available in several different metal sheath materials Alloy825 (Incoloy) is the most popular metal supplied to industrial applications and is used for boththe heating and cold leads of the heater Alloy 825 has good to excellent resistance tooxidation and carburization of the metal at high temperatures (+ 540oC1000oF) It also hasgood to excellent corrosion resistance for exposure to a broad range of acids alkalis saltsseawater and chlorine If exposure to corrosives is possible the selection of heater materialshould be checked against standard corrosion resistance tables andor manufacturers data

525 Magnesium Oxide (MgO) is the most common electrical insulation used in industrial MIheating cable MgO has good electrical and thermal properties when compressed but can besusceptible to voltage spikes that can damage the heater Supply voltages not exceeding 120volts to ground or 240 volts phase-to-phase are recommended

When the application requires using supply voltages greater than 240 Volts phase-to-phasethe quality of the supply should be considered Large motors and solid-state drives on thesame transformer may create significant voltage spikes that exceed the electrical insulation

strength of MI cable The best solution is to limit electrical equipment on the heater cablesupply transformer to non-inductive loads If that is not possible then use specially sizedsurge-suppressors that will clip voltages in excess below the expected breakover point of theMgO insulation The break-over point is a function of the maximum wire size clearances ofheating element to sheath and sheath temperature The above information on voltage supplyapplies to MI heating cables as well as tubular process heaters using MgO insulation

53 Series Resistance Heating Cables

531 Series resistance heating cables are used as engineered systems in the US for long lineheating and in Europe for broader application using a suppliers standard line of one two orthree conductor series resistance heating cables and are recommended for use under thefollowing conditions

a Maximum voltage 600 V rms

b Maximum temperature range Determined by the type of insulating materials used in theconstruction of the heating cable Standard cables are available with a maximumcontinuous exposure ratings of 250oC (482oF) In practice series resistance cablesshould not be used on pipelines with a maintenance temperature greater then 150oC(302oF)

c Maximum wattage Determined by the type of insulating materials used in theconstruction of the heating cable

532 The heating element is commonly copper which has a positive coefficient of resistance

allows circuits designed for standard voltages by a combination of heating wire size and circuitlength The low resistance for unit length allows for circuits up to a mile The supplier usuallyprovides engineering Hazardous (Classified) Area approvals are available for US-Divisionand Zone and IEC applications T-Ratings are calculated by the supplier based on themaximum sheath temperature for the specific application

533 Nichrome or Balco heating conductor materials were commonly used in the past buthave been replaced by self-regulating heaters power limited and MI heaters in mostapplications Existing installation may still be in use and serviceable The high resistance per



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unit length results in short circuit lengths and normally require a variable or adjustable voltagesource A graph or tabular chart showing resistance to temperature for each wire size used isrequired Once the resistance per unit length is know operating and start-up wattage andcurrent can be calculated from the formula

W = E2R = I2R

534 In long-line applications a metal track attached to the pipeline is commonly used tofacilitate pulling the cable between completed pipe sections after the thermal insulation hasbeen installed Single conductor heating cable has more common use in Europe in pipelineheating applications

54 Constant wattage (Zone) Heating Cables

541 Parallel construction Constant Wattage (CW) Zone type heaters are commerciallyavailable for continuous operation under the following conditions

a Maximum Voltage 277 V

b Temperature range Maximum maintain temperature (power on) up to 66oC (150oF)

depending on watt density and manufacturer Maximum Exposure temperature (poweroff) of 204oC (400oF)

c Maximum Wattage 44 Wm (133 Wft)

542 The heating element in CW cables is a Nichrome wire spiral wrapped abound twoinsulated buss conductors and contact alternate buss conductors at intervals of from 6 to 12m (2 to 4 ft) to create a heating zone CW cables come in various wattage and voltage ratingsand can be cut to length without changing heater characteristics Hazardous (Classified) Areaapprovals are available for US-Division and Zone and IEC applications

543 Constant wattage heaters are normally only used in special circumstances whereconstant wattage is required over self-regulating cables CW cables require greater craft skill

to install than self-regulating cables CW cables normally cannot be overlapped on top of otherheaters must be cut at the end of each zone or a dead section will exist and CW cables aremore fragile in handling which can result in broken zones

55 Power-Limiting (Zone) Heating Cables

551 Power-Limiting Heating Cables are a hybrid type of constant wattage cables


b Temperature Range Maximum maintain temperature (power on) up to 235oC (455oF)depending on watt density and manufacturer Maximum Exposure temperature (poweroff) of 260oC (460oF) to withstand temperature excursions and steam purges


552 The heating element in these cables is a proprietary metal wire with a positivetemperature coefficient spiral wrapped abound two insulated buss conductors and contactalternate buss conductors at intervals of from 2 to 4 ft to create a heating zone The cablescome in various wattage and voltage ratings and can be cut to length without changing heatercharacteristics Hazardous (Classified) Area approvals are available for US-Division and Zoneand IEC zone applications



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553 Power-Limiting wattage heaters are normally used to fill the application gap between theupper temperature range of self-regulating and MI heating cables These cables can normallycan be overlapped and require greater craft skill to install than self-regulating cables Unlikeself-regulating cables the node for power-limiting cables needs to be located or a dead zonewill exist The cable is cut 20 to 30 cm (8 to 12 inches) past the node to form a cold lead forthe transition point from the pipe to the junction box

56 Surface heaters for Vessels Heating

Electrical heaters for surface heating of vessels are commercially available in both stock andengineered heaters suitable for use on metallic and non-metallic tanks and other heated surfacessuch as bins silos etc

561 Flexible heaters

Flexible heaters for tank applications are commonly constant wattage heaters laminated intoan silicon rubber base with the heating element on top and an outer metal jacket that providesa ground plane and in the case of non-metallic applications can improve heat transfer Modelsare available with a self-contained thermal cutout for over-temperature protection Heatingpanels are available in standard stock sizes that are dependent on rated wattage with customsizes readily available Standard heating panels for metal tanks are available in 120 and 240V in watt densities up to 3100 wm2 (20 win2) and for non-metallic applications in wattdensities up to 1085 wm2 (007 win2) Heating panels of flexible construction are normallyglued to the tank surface with materials provided by the heater supplier Standard heaters areprovided with approvals for use in hazardous (classified) areas consult the supplier forspecific approvals

562 Rigid Heaters

Rigid heaters are normally of more robust construction for severe service such a hopperapplications and where higher watt densities are required for tank heating applications Rigidheaters normally consist of a metal heating grid that is more tolerant of shock and vibrations

enclosed in a metal jacket Standard rigid heating panels are available in voltages from 120 to600 V and watt densities up to 4650 wm2 (30 win2) Rigid heaters are normally secured totanks by threaded studs welded directly to the tank wall Standard heaters are provided withapprovals for use in hazardous (classified) areas consult the supplier for specific approvals

57 Power (Wattage) Adjustment

All bulk cable factory fabricated heater sets and heating panels are supplied by the manufacturerwith a rated power based at a rated voltage The positive temperature coefficient characteristics ofself-regulating and power limiting heating cables do not permit a direct application of ohms-law inthe determination of power when the supply voltage differs from rated voltage and require the use ofmanufacturer recommended voltage adjustment factors For constant wattage MI and seriesresistance adjustments to power can use ohms-law for acceptable results Common voltage

adjustment factors are provided in Table 3



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Table 3 Percent of Wattage for other than Rated Voltage

Appl ied Vol tage 120 - Rated Voltage Appl ied Vol tage 240 ndash Rated Voltage

110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133

The actual wattage for voltage other than rated voltage can be calculated using the formula

Actual Wattage = Rated Wattage x Applied Voltage2

Rated Wattage2

6 Design Process

61 Required Design Information

To ensure a workable heat-trace design the designer (in-house contractor third party or supplier)must be furnished with basic application information along with accurate piping and equipment

information notified of revisions and provided with drawings and change of scope data to the heat-tracing system The following information as applicable for the specific installation is necessary inthe design of a heat tracing system

a) Thermal design parameters (refer to the Design Basic Data Checklist ndash Table 10)

b) PampIDs (may be required to mark with flow patternrsquos)

c) Equipment layout drawings (plans sections)

d) Pipe drawings (normally computer generated pipe sketches or PDMS generated isometrics)

e) Pipe Specifications (Product amp Service Index or complete specification on large projects orspecial materials)

f) Thermal Insulation Specifications (Site or project DuPont coding system will need to be

understood to determine type and thickness of thermal insulation from PampIDs)g) Equipment details drawings (Vendor standard drawings or BPF details (Blue Print File of

tanks pumps strainers valves or special heated equipment)

h) Electrical DrawingsInformation (SL diagrams available voltages circuit designation formatpreferred voltage)

i) Bill of materials (normally on PampIDs)

j) Area classification (including AIT of gas or Vapors ndash refer to Design Basic Data Checklist-Table 10)

k) Process or operating procedures that would cause elevated pipe temperatures (processexcursions exothermic reactions steam-out etc)

l) Heating cable information (Supplier preferences for type of heating cable components)

m) Heating control system or components (Supplier model(s) voltage temperature sensor)

n) MonitoringAlarm requirements (alarms by type single or grouped local or central etc)

62 Flow-Pattern Analysis

When the piping configuration for a Type II or III process system are analyzed all possible flowconditions in the piping network should be considered in determining heat-tracing zones(segments) Consider the heated pipeline example in Figure 1 represents a common application



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that requires three heating zones even though the pipe length could be supplied by one circuitWhen heated product flows from the tank through pipe A circuits 1 amp 2 are de-energized by thepipe sensing control and Circuit 3 which is heating the non-flowing material remains energized Ifall three circuits were controlled by one pipe sensing temperature control then any combination offlow-paths would result in de-energizing the heat-tracing in a non-flowing segment of the systemValve bypasses around valves and other equipment is another common piping segment that

requires additional controlFlow-path analysis may be obvious or may require the support of the process function with theknowledge of the physical properties of the heated material The analyzed flow-paths arecommonly analyzed on marked PampIDs using colored high-liters to denote different flows

Figure 1 Flowpath Example

V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3

63 Electrical Distribution - Branch Circuits

Branch circuit determination requires several considerations The basic rule for circuit loading for

NEC applications is based on NEC 40921(C) that requires the conductor ampacity andovercurrent protective device shall be not less than 125 of the total load of the heaters For IEC

applications the total load of the heater shall not exceed the rating of the branch-circuit over-current protection

For NEC Appl ications the rating of the branch-circuit overcurrent protective device can be ashigh as 40 A and still be within the manufacturers recommendations In DuPont applications therating is driven by the commonality of short circuit length especially in process heating applicationsdue to flow-path considerations The rating is also affected by the rating of the temperature controlsystem where mechanical thermostats for trace-heating are commonly rated at 22 A Heatingcontroller ratings commonly vary from 20 to 30 A and when employing solid-state relays may requireampacity derating based on operating temperature Some heating controller cabinets are providedwith 25 A circuit breakers that permit the 20 A rating of the output to be fully used following the 80limit for a continuous load

NEC 42722 requires ground-fault protection of equipment for heat tracing and heating panelsThe required protection can be provided by a 30ma ndash EPD circuit breaker (Equipment ProtectiveDevice) an adjustable ground-fault relay or a heating controller with integral ground-faultprotection For adjustable devices the trip setting is normally set at 30ma above any inherentcapacitive leakage current IEC applications require the use of a residual-current protectivedevice having a rated residual operating current not greater than 300 ma with a trip time notexceeding 150 ms Residual-current devices rated at 30 ma and 30 ms are preferred



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The maximum circuit length of heating cable is a function of the rating (size) of the branch-circuitprotective device heater start-up current the current duration at the minimum temperature andmaximum permissible voltage drop across the heating cable Heating cables are normally rated at10oC (50oF) will have increased power output when cold-started at lower ambient temperatures Theeffects of the starting temperature and inrush current will vary according to the type of conductormaterial and in the case of self-regulating heaters by the ldquofamilyrdquo and wattage of heaters For bulk-

heating of self-regulating constant-wattage and mineral insulated cables always use themanufacturer published maximum circuit-length data with a further adjustment for supply voltageother than the cable rating

The most common application of series resistance heating cables will be for long circuit lengths (upto 10000 ft) with a copper-heating conductor If a soft-start solid-state controller is used the circuitlength considerations will be limited to acceptable voltage drop based on acceptable temperature ofthe heating cable at the end of the circuit

The number of heating devices or segments should not exceed five on a single protective device

For NECreg ndash Class 1 Division 1 and Class 1-Zone 1 applications each heating circuit shall beprotected by an individual protective device IEC ndash Class II ndash Zone 1 and 2 applications require ameans of disconnecting the circuit from the supply and an over-current protective device for each

heating circuit

When a parallel type (self-regulating power limited and constant wattage ndash zone) heater is used onlong runs the voltage drop across the buss wires results in less heater watts density (output) at theend of the circuit Self-regulating cables are generally are more tolerant of circuit length than powerlimited and constant wattage Acceptable values for voltage drop across the heating circuit are builtinto manufacturers maximum circuit length tables but should be taken into consideration whendetermining cable output especially for Type III applications location of temperature sensors andsafety factors

Power panels sharing heating loads and Heat-Trace Power Panels (HTP) dedicated to supplyingheating loads have a significant potential for loads that are very unbalanced that can result in earlyfailure of the supply transformer Panel schedules complete with load tabulation is criticallyimportant to complete in the design phase and to verify with ammeter measurement at time ofcommissioning (Refer to PE43)

64 Final Documentation

Each heater circuit should be shown on a drawing depicting the piping in isometric form or forsimple systems a PampID format can also be used Each drawing should include the relevant designinformation bill of materials and area classification Tracer allowances at valves pipe supports andequipment can be noted on the isometric or by detail drawing if complex Isometric circuit drawingsshould also provide electrical circuit information and reference associated drawings Project relateddesign will usually require electrical power plan plot plans or data entry into PDMS or other 3D CADsystems noting physical location of system components Relevant design information and bill of

material should include

Design Information

a) Temperature to be maintained

b) Minimum ambient temperature

c) Type amp thickness of thermal insulation

d) Heat loss at desired maintain temperature

e) Length of piping



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f) Trace ratio of heater cable on pipe

g) Extra cable added on valves pipe supports and other heat sinks

h) Watt per unit length of the heating cable at desired maintain temperature

i) Watts total start-up and steady state current

Bill of Material shown include

a) Catalog number of heating devices and total length including allowance for connectionsb) Catalog number and quantity of each component used (power connection splice tee end-

seal)

c) Catalog number and quantity of control or high-limit thermostats

d) Catalog number and quantity of tape used to secure heating cable to pipe

e) Catalog number and quantity of Caution Electric Traced Pipeline labels

Design deliverables from DuPont alliance suppliers for electric heating provide a standardizedformat drawing in Microstation CAD on a DuPont drawing border and include an isometric of theheating circuit bill of materials and design data

7 Manual Design Example

The following design example provides a step-by-step working example of a typical freezeprotection application Information is provided in a way that demonstrates the information requiredand basic steps to complete a heating circuit design The example is limited to freeze protectionbased on the assumption that most freeze protection and process-heating design will normally usemanufacturers software programs

71 Minimum Required Information

72 Heat ndashLoss Tables

Simplified heat-loss tables have been included in this standard Although the tables provide a quickdetermination of heat-loss for many typical applications it is expected that most designengineering

will be accomplished using suppliers software programs that facilitate cable selection based onoperating conditions Table 11 provides heat-loss for typical maintain temperature and insulationthickness for US based piping units with Polyisocyanurate insulation Table 12 provides heat-lossfor typical maintain temperature and insulation thickness for metric piping with mineral woolinsulation Tables 11 and 12 are based on outdoor applications with a 25-mph wind A 25 safetyfactor has been applied to the calculated heat loss for freeze protection applications and a 50safety factor for process heating applications

To use the charts find the appropriate table then first select the insulation thickness second select

the ΔT (differential temperature between the minimum ambient temperature and the maintaintemperature) and then read across the table to the column for the pipe size to find the heat lossunder those conditions

73 Step-by-Step Design

The following example is for a freeze protection application and uses the Design Basic DataChecklist (Table 10) as a source for the required input for each step

Appl ication Water freeze protection of a 6 schedule 40 carbon s teel ndash insu lated pipeline

305 m (100 ft) in length w ith one centrifugal pump with flanged connectionsPipe is flanged every 61 m (20 ft) and has a ball valve on one end and is



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supported on welded pipe shoes spaced at 61 m (20 ft) intervals A low poin tdrain is provided which consists of 1 ft of 05 pipe and a 1 ball valve Thepipeline extends through a classified (hazardous) area containing Ethylenegas (NEC Class 1 ndash Division 2 ndash Group C IEC Class 1 ndash Subgroup IIB) wherethe determining AIT is 450oC

STEP 1 Calculate differential temperature (

T) where T = Tm - Ta

Minimum Ambient Temperature (Ta) 0oF -177

oC

Pipe Maintenance Temperature (Tm) 40oF 44

oC

Using the formula T = Tm ndash Ta calculation T = 40oF ndash 0oF = 40oF (222oC)

STEP 2 Determine Pipe Heat Loss

Pipe Size MaterialSchedule 6 Carbon Steel - Schedule 40

Thermal Insulation Type Polyisocyanurate (Code 1181)

Thermal Insulation Thickness 15 in

Using the simplified Pipeline Heat Loss (Table 11) match the pipe size and insulation thickness with

the T to determine the base heat loss of the pipe

From Table 11 heat-loss for a 6 schedule 40 - carbon steel pipe 1-12 Polyisocyanurate insulation

40oF (4oC) T the heat-loss is 4 watts per foot

STEP 3 Adjust Heat Loss for Dif ferent Types of Thermal Insulation

Table 11 is based on Polyisocyanurate rigid thermal insulation (DuPont Code 1181) If othercommon insulating materials are used then an adjustment factor must be applied Refer to Table 9 for adjustment to be used for alternate insulating materials

STEP 4 Select heating Cable Type (Family) amp Required Approvals

Based on the applicationrsquos maintain temperature maximum exposure temperature AreaClassification T-Rating and pipe material select the appropriate heating cable

Value NEC Appl ication IEC Appl ication

Maintain Temperature (Tm) 40oF 44

oC

Maximum Exposure Temperature (Te) 105oF 406

oC

Area Classification C1D2 ndash Group C Class 1 - IIB

T-Rating AIT (Ethylene) T-1 450oC T-1 450

oC

Pipe material Carbon Steel (Note 1) Carbon Steel (Note)

Note Non-metallic pipe heating cables must be approved for use by supplier

For the above application a 5 wft Thermon ndash Type BSX or Raychem (Tyco-Thermal) - Type BTV heating cable will meet the required conditions and approvals Both cables have a maximumcontinuous exposure (power on) temperature rating of 85oC (185oF) a maximum maintaintemperature of 65oC (150oF) are Factory Mutual (FM) approved for Class I - Division 2 ndash Groups ndash

ABC amp D have a T-rating of T-6 maximum sheath temperature of 85oC (185oF) which is wellbelow the identified AIT of 459oC



7252019 de1h



Example 5 Wft SR Power Outpu t Curve

0

1

2

3

4

5

6

7

30 50 70 90 110 130 150

Pipe Temperature - Degrees F

W a t t s p e r f

o o t

STEP 5 Select heating Cable Voltage

Standard service voltage rating for heating cables are 120 volts (100-130 Vac) and 240(200-277 Vac)

For this application a service voltage of 208 Vac has been selected to demonstrate the requiredvoltage adjustment for other than rated voltage

STEP 6 Determine Actual Heating Cable Power Output

The example has selected self-regulating type heating cable As explained in section 513 thepositive coefficient of resistance to temperature causes the heater output to vary based on the self-regulating index (rate of power change to temperature change) that will vary by heater ldquofamilyrdquo

For the example using the above power output chart we can estimate that the power output for the5 wattft cable will be 55 wft at 40oF at the rated voltage of 240 Volt Based on manufacturers

data for typical cables of this family an additional adjustment factor of 085 is applied to correct forthe 208 Volt service voltage for a final wattage of 465 wattsft which is adequate for the estimatedheat loss of 4 wattsft (see Step 2)

STEP 7 Determine Heating Cable Jacket Type

The family of polymeric self-limiting heating cable selected is available in two type of overjacketswhich are representative of common industry practice Jackets provide both resistance to theinstalled environment chemical exposure and mechanical protection during installation and normaluse Common jacket materials for polymeric heating cables are indicated in Table 4

Table 4 Heating Jacket Selection Criteria

Material ApplicationFluoroploymer Exposure to organic chemicals or corrosives superior scuff resistance

Modified Polyolefin Exposure to aqueous inorganic chemicals



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STEP 8A Calcu late Length of Heating Cable on Piping

Either a manual sketch CAD pipe sketch or piping arrangement drawing is required to calculate thelength of pipe to be heated

If the pipe is flanged an allowance based on pipe size is normally added to the linear footage of thepipe The standard DuPont ndash Heat tracing Installation Details for Thermon amp Tyco-Thermal cables

provide a standard installation detail for heating cable at flanges that is based on the same thermalinsulation on the flange as the pipe For freeze protection applications with 150 flanges a generalallowance of 10 cm (4) for pipe sizes 5 ndash1 23 cm (9) for pipe sizes 125 ndash 8 and 30cm (12) forpipe sizes 10 ndash 18

Example From the application example the pipe is 305 m (100 ft) in length with 150 flanges atthe end of each 61 m (20ft) section

Length = 305 m (100 ft) + [5 flanges x 23 cm (9)] = 305m (100 ft) + 15 m (375 ft)= 32 m (104 ft)

STEP 8B Calculate Length of Heating Cable on Valves

Valves have greater surface area that requires additional heat-tracing cable to compensate for thegreat heat-loss

The standard DuPont ndash Heat tracing Installation Details for Thermon amp Tyco-Thermal cables providea standard installation detail for heating cable on valves Table 5 defines allowances for valvesbased on the amount of heating cable that can be physically be installed on valves and is adequatefor freeze protection and moderate temperature process heating applications

Table 5 Heating Cable Allow ance for Valves

Heating cable Allowance by Valve Connection Type in m (ft)Nominal ValveSize (in) Screwed Welded Flanged Butterfly

05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)

Note Based on how much heating cable can be reasonably installed

Example From the application example there is one (1) 4 flanged ball valve and one (1) 1flanged ball valve Using Table 6 the length of heating cable required is

15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



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STEP 8C Calculate Length of Heating Cable for other In-line Equipment (ie pumps basketstrainers check valves)

All in-line equipment that is larger than the pipe requires heating cable allowances to compensatefor additional heat loss Many types of equipment can be physically associated with valve types anduse the value in Table 5 For pumps basket strainers and other large equipment the allowance canbe calculated by the surface area of the equipment modeled into a cylinder and computed as asmall section of large pipe See Table 8 for watt loss per surface area Table 6 defines allowancesfor typical centrifugal pumps and is adequate for freeze protection and moderate temperatureprocess heating applications

Table 6 Typical Heating Cable Allowance for Pumps in m (ft)

Nominal Pipe Size (in) ofpump connections Screwed Connection Flange Connections

1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)

Note Based on centrifugal pump for freeze protection applications

Example From the application example there is (1) one centrifugal pump with flangedconnections From Table 6 the length of heating cable required is 55 m (18 ft)

STEP 8D Calculate Length of Heating Cable on Pipe Supports

Welded pipe supports represent a major loss of heat in the system and are often missed in thedesign phase The heat loss is critical at smaller pipe sizes in the 12 to 4 range and diminishesas a percentage of overall heat loss as the pipe sizes increase The length of the pipe support mustbe known and additional heat-tracing cable applied and additional thermal insulation applied

The heat-loss (extra heat) required for a pipe shoe that is partially insulated can be calculated and a25 safety factor added by using the formula

Q = 07L x (Tm ndash Ta) x 125 (where L = the length of the welded pipe support Tm = maintenancetemperature Ta = minimum ambient temperature)

The standard DuPont ndash Heat tracing Installation Details for Thermon amp Tyco-Thermal cables providea standard installation detail for welded pipe supports that is adequate for freeze protection andmoderate process heating High maintenance temperatures (gt 150degC (300degF) or pipe shoes withsignificant exposed metal may require additional cable Based on the standard installation detailsthe amount of heat cable required will be

Length of heating cable = Length of support + 15 cm (6) x 2

Example From the application example welded pipe shoes were identified as the method of pipesupport For the example we will assume the pipe support is 15 cm (6) in length andbuilt to DuPont standards (refer to P25F) The required cable for each support will be

L = [15 cm (6) + 15 cm (6)] x 2 = 60 cm (24) per support or

5 welded pipe shoes x 60 cm (24) = 300 cm (120) or 30 m (12 ft)



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STEP 8E Calculate heating Cable for Components

The process of installing system components requires additional heat-tracing cable to provide for aservice loop at the component and to make up the internal electrical connections Estimate thenumber of power connection tees splices and end-seals for the system and allow 1 m (3 ft) ofheating cable for each component

Example From the example there is 1 power connection and one high profile end-seal or a totalof 2 components

2 components x 1 m (3 ft) per component = 2 m (6 ft) allowance

STEP 8F Calculate Total Heating Cable Required

Add of the calculated lengths for piping valves supports and components

Example From the example add the calculated lengths For the example 32 m (104 ft) for piping+ 21 m (7 ft) for valves + 34 m (113 ft) for in-line pump + 45M (15 ft) for supports + 2m (6 ft) for components

Total length = 32 m (104) ft [pipe] + 21 m (7 ft) [valves] + 55 m (18 ft) [pumps] +30 M (12 ft) [pipe shoes] + 2 m (6 ft) [components] = 446 m (147 ft) Total

STEP 13 Determine number of heating ci rcui ts required

The total calculated feet of heating cable is used to determine the number of circuits required If theheating cable is constant-wattage (zone) MI or series resistance heating then ohms law can beused to calculate the current requirements at the operating temperature and compare that valueagainst the maximum allowable circuit loading for the rating of the branch-circuit protective device

For self-regulating cables the manufacturer establishes the maximum allowable circuit length foreach type (family) of heating cable The maximum circuit length is specific to each type (familyrated voltage and wattage) and is based on minimum ambient start-up temperature and rating of the

branch circuit protective device The maximum start-up currents for US applications are based onthe thermal-magnetic trip curves of a standard NEMA type circuit breaker used in power panels

Example From the example the total calculated heating cable is 446 m (147 ft) For theexample assume start-up at a minimum ambient temperature of ndash177oC (0oF) with theheating cable powered by a 20 ampere - 208 volt circuit

For a Thermon heating cable catalog BSX5-2 the maximum circuit length as stated by themanufacturer is 120 m (395 ft) An adjustment factor of 099 must be applied for the 208 voltsupplied power instead of the cable rating of 240 volt resulting in an adjusted maximum circuitlength of 119 m (391 ft)

For a Raychem (Tyco-Thermal) heating cable catalog 5BTV-2 the maximum circuit length is 116

m (380 ft) and must be compensated by a factor of 099 for the 208 volt supplied power instead ofthe cable rating of 240 volt resulting in an adjusted maximum circuit length of 115 m (376 ft)

Note The manufacturerrsquos proprietary software programs compute the required allowances



7252019 de1h



STEP 14 Calculate Circu it Power Requirements

Power requirements may need to be calculated for start-up currents especially if the currents aremore than transitory For most applications the heating cable start-up (transient) time is considered300 s but still needs to be checked to assure that protective devices will not trip

The most common calculation is based on stabilized conditions and is used to calculate power for

power transformer and branch-circuit sizing

In step 6 the adjusted output of the 5 wattft cable was determined to be 465 wft The nominalpower output (at the design maintenance temperature of 40oF) can be calculated to be 465 wft x147 ft = 684 watts with a circuit current of (PE =I) 684 208 volt = 33 amperes A single 20 amp ndash208 volt circuit is sufficient for the estimated installed length of 446 m (147 ft)

The maximum current in the circuit will occur at the designated start-up temperature and willsteadily decrease until a steady-state condition is reached after approximately 300 seconds For theexample we will assume that the cable output at 0oF is 6 wft and that maximum circuit current canbe calculated at 6 wft x 147 ft = 882 watts with a circuit current of 882208 = 42 amperes

8 Design using Suppliers Software Based ProgramsSupplier based Personal Computer (PC) based software program have matured from providingbasic heat-loss calculations to provide complete heating device selection based on user inputThese programs in the hands of experienced users are powerful tolls that can execute entire projectdesigns with high accuracy In the hands of inexperienced or occasional users the results can beflawed with the generated reports providing a high degree of confidence based on their professionalappearance

It is the responsibility of the designer to compile and assure accuracy of the required ldquouser inputrdquodata Additionally within DuPont significant scope growth during construction has been an historicalproblem and is often the result of starting the heating design process too early before accurate orcomplete piping design is available

81 Basic information input

The effective use of supplier software programs requires that all needed information has beenassembled and analyzed Refer to section for section 61 for a list of documents that may berequired In addition to the required design information a flowpath analysis normally documentedon PampIDs is used along with pipe sketches or arrangements to determine initial circuit lengths orheating zones

82 Common software based design problems

The design basis for supplier software programs may not always match installed conditions Pipingdesign thermal insulation valve allowances etc may not accurately reflect what DuPont standard

practices



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Table 7 Conversion of Common Heating Units

Watts per foot (Wft) x 328 = Watts per meter (Wm)

Watts per meter (Wm) x 0305 = Watts per foot (Wft)

Watts per square foot (Wft2) x 1076 = Watts per square meter (Wm

2)

Watts per square meter (Wm2) x 0093) = Watts per square foot (Wft

2)

BTU-inhr-ft2-oF x 014413 = Wm-oC

Wm-oC x 69381 = BTU-inhr-ft2-oFoF = (oC x 95) + 32oC = (oF ndash 32) x 59

Table 8 Watts per square meter (square foot) heat loss(1)

ndash Flat Surfaces based on Polyisocyanurate (Code1181) Thermal Insulation

(2)

Temperature differential (surface to ambient)Insulation

Thickness 25degC (77degF) 50degC (122degF) 75degC (167degF) 100degC (212degF) 150degC(3)

(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes

(1) Includes 50 safety factor

(2) See Table 9 for other insulations

(3) Based on Expanded Perlite insulation since the temperature limitations of Polyisocyanurate will be exceeded

Divide the total calculated heat loss by the heating cable power output to get the length of heating cable required

Table 9 Adjustment Factors for other than Polyisocyanurate Insulation

Notes

Insulation Mean Temperature(1)

Type of Pipe Insulation Multiplying Factor(2)

K Factor (BTU-inhr-ft2-oF)

DuPontCode Description

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

102 Calcium Silicate 197 192 156 161 038 039 041 045

1022 Expanded Perlite(3)

197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035

1141 Mineral Wool(3)

116 123 114 125 022 025 030 035

1181 Polyisocyanurate(4)

1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)

(1) Mean temperature across the ΔT range (Temperature at insulation mid-thickness)(2) Multiply the factor by the heat loss from Table 9 (Polyisocyanurate based)(3) Recommended for heat trace applications with service temperatures greater than 250

oF (121

oC)

(4) Recommended for heat trace applications with service temperatures up to 250oF (121

oC)

(5) Temperature rating exceeded



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Figure 2 Minimum water flow in pipelines to prevent freezing

0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10

Minimum Flow GPM per 100

ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation

Basis Pipe (uninsulatedinsulated) installed outdoors -28oC (-20oF) water temperature 44oC(40oF) Graph assumes steady flow pressure and nominal 24 kph (15 mph) wind velocity Ifpressure fluctuates or winds are above normal the flow rate should be doubled Pipe wallthickness or materials have no perceptible impact on graphed values The addition of 2insulation reduces the required flow rate to about 110 of those for bare pipe This table can be

used to determine minimum flow in the pipe or minimum rate for a ldquobleed offrdquo drain system

Example

What is the minimum flow rate to prevent freezing for a uninsulated 8 inch water pipe 250 foot inlength exposed to a -28oC (-20oF) ambient temperature with a 24 kph (15 mph) wind From thegraph 5 gpm is indicated for 100 ft of 8-inch pipe Flow is then 25 hundred feet x 5 gpm = 125gpm If 2 inches of Polyisocyanurate insulation is used the flow will be 25 hundred feet x 05 gpm= 125 gpm



7252019 de1h



Table 10 Design Basic Data checkl ist

Click on this link for an Excel spreadsheet version DE1H Design Basic Data Checklistxls

ELECTRICAL RESISTANCE HEAT TRACING

(Self Limiting Constant Wattage Series Resistance MI cable)

DE1H - Table 10 - DESIGN BASIC DATA CHECKLISTLocation System Project Number Reference Drawing(s)

SITE INFORMATION

Minimum Ambient Temperature Design Wind Speed

Maximum Ambient Temperature Design Safety Factor

Installed Outdoors Indoors Design __ FMUL __ IEC Other

APPLICATION

Freeze Protection Process Heating Safety Showers Tempered Water Systems

Non-Metallic Pipe Vessels Pre-Traced Instrument Analyzer Tubing

Steam Condensate Lines (freeze protection)

Allow Spiraling of tracer (Normally NO)

PROCESS INFORMATION

Material in Pipe Liquid Gas Vapor

Pipe Maintenance Temperature Deg C (Deg F)

Normal Process Operating Temperature Deg C (Deg F)Minimum Allowable Product Temperature Deg C (Deg F)

Maximum Allowable Product temperature Deg C (Deg F)

Maximum Exposure Temperature (from process excursions steamout etc)

Type 1 (Temperature maintained above a minimum point)

Type 2 (Process maintained within a moderate band)

Type 3 (Process controlled within a narrow band)

PIPING (VESSEL) SYSTEM

Pipe (Vessel) Material Schedule (Thickness)

Special Conditions (Lined pipe etc)

Pipe Supports Method(s) __ Hanger __ Pipe Shoes __ Outside Load bearing Other

THERMAL INSULATION SYSTEM

Type Thickness K-factor Temp

Maximum Temperature Rating deg C deg F Installed Oversized

Soft Insulation used (Valves pumps)ELECTRICAL SYSTEM

Voltage(s) Available Volts Phase Hertz

ENVIRONMENTAL

Chemical environment (exposure)

Electrical Area Classification T-Rating

Determining GasVapor (lowest AIT)

Approvals required CSAFMUL IEC PE Stamped Drawings

SPECIAL PROCESS HEATING CONSIDERATIONS

Use this section only for Heat-Up Melt Out or other special heating requirements

Special Heating Requirement Heat-Up Melt-Out Other describe

Volume of fluid solid to be heated Flowing Non-flowing

Allowable time to accomplish rise in temperature change state

Initial material temperature Final material temperature

Temperature when material changes state Pipe Material

Specific Heat Solid Liquid Vapor

Density Solid Liquid Vapor

Heat of Fusion or vaporization

Prepared by Company Date

Approved by Company Date

Received by Company Date



7252019 de1h


DE1Hreg Design amp Application of Electrical Resistance Heat Tracing for Pipelines

Table 11 Pipeline Heat Loss ndash Watts per Foot (Wft)

InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes

(1) Heat losses are based on Schedule 40 - Carbon Steel pipe Polyisocyanurate (p) insulation outdoors 20 mph wind25 safety factor for 40oF Delta T (Freeze Protection)50 Safety Factor for all other Delta Ts (Process Heating)

(2) Pipe sizes IPS indicates Iron Pipe Size T indicates Tubing all include oversized insulation

(3) Multiply wft x 328 to obtain equivalent wm

Document revised January 2005 Entire document reaffirmed January 2005

Copyright copy 2000 2002 2004 EI du Pont de Nemours and Company All Rights Reserved Used under Copyright LicensePage 33 of 34

7252019 de1h



Table 12 Pipeline Heat Loss ndash Watts per Meter (Wm)

InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes

(1) Heat losses are based on Mineral Wool insulation outdoors 20 mph wind 25 safety factor for 40oF Delta T (Freeze

Protection) 50 Safety Factor for all other Delta Ts (Process Heating)

(2) Pipe sizes are in metric and insulation is not oversized

(3) Multiply wm x 03048 to obtain equivalent wft

7252019 de1h


DE1HDesign and Application of Electrical Resistance Heat Tracing for Pipelines reg

1 User guidance

11 Scope

This standard describes requirements and recommendations for the design and application ofelectrical resistance heat tracing systems as applied to the surface heating pipelines and vessels in

ordinary and hazardous (classified) locations for

a Freeze protection of service and process piping systems

b Maintaining specified temperature of process systems

12 Applicability

The guidelines contained in this standard are applicable to all sites and businesses at which DuPontandor designated contractor is responsible for the engineering design selection or specification ofpipeline or vessel heating systems Regulatory requirements and application examples are provided

for National Electric Code (NECreg) and International Electrotechnical Commission (IEC)installations

13 Benefits

Adhering to the guidelines in this standard will provide the following benefits

bull Understand and apply NECreg and IEC requirements for safe installations

bull Understand industry terminology and how it applies to system design

bull Integrate industry practices with DuPont standard practices for thermal insulation piping andpipe supports

14 Definitions

Controlled Design Design basis where a temperature control device is required to limit themaximum pipe temperature to a determined value (Refer to section 45 for additional information)

Electrical resistance heat tracing The utilization of electric heating cables other electric heatingdevices and support components that are externally applied and used to maintain or raise thetemperature of fluidsmaterials in piping vessels and associated equipment Also referred to aselectric trace heating (IEC)

Heat loss The quantitative loss of energy flow from a pipe vessel or equipment to the surroundingambient

Heat-transfer aids Thermally conductive materials such as metallic foils (commonly self-adhesivealuminum tape) or heat transfer cements used to increase heat-transfer rates from the heating

device to the process piping or equipment

Maintain temperature Specified temperature of the fluid or process material that the heat tracing isdesigned to hold at equilibrium under specified design conditions

Maximum continuous exposure temperature (heater de-energized) The highest temperature towhich a component of the heat-trace system may be continuously exposed


Copyright copy 2001 2008 2009 EI du Pont de Nemours and Company All Rights Reserved Used under Copyright License of 34

7252019 de1h











15 References
















7252019 de1h



Other References






2 General














7252019 de1h








31 Site Information














7252019 de1h



















7252019 de1h











oF) to 107

oC (225

oF)


oF) to 54oC (130

oF)



oF) to 60

oC (140

oF)







7252019 de1h












7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








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110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























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V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h











15 References
















7252019 de1h



Other References






2 General














7252019 de1h








31 Site Information














7252019 de1h



















7252019 de1h











oF) to 107

oC (225

oF)


oF) to 54oC (130

oF)



oF) to 60

oC (140

oF)







7252019 de1h












7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h



Other References






2 General














7252019 de1h








31 Site Information














7252019 de1h



















7252019 de1h











oF) to 107

oC (225

oF)


oF) to 54oC (130

oF)



oF) to 60

oC (140

oF)







7252019 de1h












7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h








31 Site Information














7252019 de1h



















7252019 de1h











oF) to 107

oC (225

oF)


oF) to 54oC (130

oF)



oF) to 60

oC (140

oF)







7252019 de1h












7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h



















7252019 de1h











oF) to 107

oC (225

oF)


oF) to 54oC (130

oF)



oF) to 60

oC (140

oF)







7252019 de1h












7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h











oF) to 107

oC (225

oF)


oF) to 54oC (130

oF)



oF) to 60

oC (140

oF)







7252019 de1h












7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h












7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h






(250 to 1200oF)

045 200oF (93

oC) mean

055 400oF (204

oC) mean

066 600oF (316

oC) mean

Poor


1022 27 to 538oC

(80 to 1000oF)

055 200oF (93

oC) mean

066 400oF (204

oC) mean

080 600oF (316

oC) mean

Good


114 24 to 649oC

(75 to 1200oF)

035 200oF (93

oC) mean

060 600oF (316

oC) mean

10 1000oF (537

oC) mean

Fair



1181 -77 to 120oC

(-100 to 250oF)

017 50oF (10

oC) mean

018 75oF (24

oC) mean

022 150oF (66

oC) mean

Good

Phenolic Foam


1211 -77 to 120oC

(-100 to 250oF)

013 50oF (10

oC) mean

013 75oF (24oC) mean015 150

oF (66

oC) mean

Good













7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h














ANSIIEEE-515

( )a

oco

T

HDHDK

DD

HD

WTpr +⎥

⎦

⎤⎢

⎣

⎡+++=

212

12

11

11

2

ln1

π

Where




oF)




7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h





oC BTUh middot ft

2 middot

oF)


2 middot

oC BTUh middot ft

2 middot

oF)


oC BTUh middot ft

2 middot

oF)





psh TUA

WT +=

Where












7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h











461 NEC




462 NEC





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h


7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h









Where















7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h

















7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h



















7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h


















7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h




W = E2R = I2R



















7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h








562 Rigid Heaters








7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h





110 V 69 208 V 75

119 V 84 220 V 84

115 V 92 230 V 93

130 V 117 277 V 133



Rated Wattage2

6 Design Process























7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h






V--1

Pump-1

V--2

V--3

Pipe B

Pipe A

HEATED TANK

TS

TS

TSCkt No 1

Ckt No 2

Ckt No 3









7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h








heating circuit






Design Information





e) Length of piping



7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h









seal)



















7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h







oC


oC
















oC


oC



oC







7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h




0

1

2

3

4

5

6

7

30 50 70 90 110 130 150


W a t t s p e r f

o o t















7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h














05 15 cm (05) 30 cm (10) na

075 23 cm (075) 46 cm (15) na

10 30 cm (10) 61 cm (20) 30 cm (10)

15 46 cm (15) 76 cm (25) 46 cm (15)

20 61 cm (20) 76 cm (25) 61 cm (20)

40 120 cm (40) 150 cm (50) 91 cm (30)

60 210 cm (70) 240 cm (80) 110 cm (35)

80 290 cm (95) 340 cm (110) 120 cm (40)

100 381 cm (125) 430 cm (140) 120 cm (40)



15 m (50 ft) + 61 m (20 ft) = 21 m (70 ft)



7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h







1 76 cm (25) 15 m (50)

2 15 m (50) 19 m (62)

4 27 m (90) 34 m (113)

6 48 m (16) 55 m (18)














7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h






















7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h















practices



7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h







2)


2)





(2)



(302degF)

10 028 (30) 059 (63) 088 (95) 117 (126) 464 (50)

15 018 (19) 041 (44) 061 (66) 082 (88) 307 (33)

20 014 (15) 028 (30) 044 (47) 057 (61) 232 (25)

Notes






Notes





10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF

10oC

50oF

38oC

100oF

93oC

200oF

149oC

300oF



197 197 163 168 038 040 043 047

1121 Fiberglass 116 118 110 125 022 024 029 035


116 123 114 125 022 025 030 035


1 1 1(5)

019 020 026 028

121 Phenolic Foam 068 074 (5) (5) 013 015 (5) (5)


oF (121

oC)


oC)




7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






7252019 de1h




InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





7252019 de1h




0

2

4

6

8

10

12

1416

18

20

1 2 3 4 5 6 7 8 9 10


ft Pipe

P i p e

S i z e

( I n c h e s )

Uninsulated Pipe

20 inch Polyiso

Insulation



Example




7252019 de1h








SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






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InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





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SITE INFORMATION




APPLICATION





PROCESS INFORMATION


















ENVIRONMENTAL




















7252019 de1h




InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






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InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





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InsulationThickness

InsulType

delta T(DegF)

12 IPS34 T

341 T

11-14 T

1-141-12 T

1-122 T 2 2-12 3 4 6 IPS

P 40 13 14 17 18 20 24 28 26 31 5510 in(25mm)

P 75 29 29 37 38 45 52 62 58 69 122

P 40 11 11 12 14 16 16 21 21 25 40

P 75 23 23 26 30 34 35 46 46 54 88

P 100 30 30 34 38 44 45 59 59 70 112

P 150 49 49 55 62 72 74 96 95 113 182

P 200 69 69 78 102 102 106 138 137 162 261

150 in(38 mm)

P 250 104 104 104 137 137 141 184 183 217 349

P 40 09 09 11 11 13 14 17 18 21 32

P 75 20 20 24 24 29 31 38 39 46 70

P 100 26 26 31 30 37 39 49 50 58 90

P 150 42 42 50 49 60 64 80 81 95 146P 200 60 60 72 70 86 91 114 116 136 209

20 in(50 mm)

P 250 96 96 96 94 115 122 152 155 182 280

P 40 08 08 11 10 12 12 15 15 18 27

P 75 18 18 21 21 26 27 33 34 39 59

P 100 23 23 27 27 33 35 43 44 50 76

P 150 38 38 44 40 53 57 69 71 82 123

P 200 54 54 63 64 76 81 99 102 117 177

25 in(63 mm)

P 250 85 85 85 85 102 109 133 137 157 237

P 40 08 08 09 09 11 11 13 14 16 23

P 75 17 17 19 20 23 25 30 30 35 50

P 100 21 21 25 25 30 32 38 39 45 64

P 150 35 35 40 41 48 52 62 63 74 105

P 200 50 50 58 59 69 74 89 91 106 150

30 in(75 mm)

P 250 77 77 77 79 93 99 119 122 141 201

Notes






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InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





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InsulationThickness

InsulType

delta T(DegC)

15(12)

20(34)

25(1)

32(125)

40(15)

50(2)

65(25)

80(3)

100(4)

150(6)

MW 4 54 62 71 83 91 107 124 145 178 24725 mm(10 in)

MW 24 123 141 162 190 209 245 284 331 407 565

MW 4 49 55 63 74 81 94 108 126 153 212

MW 24 112 127 145 168 184 215 248 288 351 485

MW 38 151 172 196 228 250 292 335 390 476 657

MW 66 235 268 306 355 389 454 522 606 740 102

MW 93 323 368 420 488 534 623 717 833 1017 1404

30 mm(12 in)

MW 121 422 480 549 637 698 815 937 1089 1329 1836

MW 4 42 47 54 61 67 77 88 101 123 167

MW 24 96 108 122 141 153 177 202 232 281 382

MW 38 130 147 161 191 207 240 273 315 380 518

MW 66 203 228 258 297 323 373 425 490 592 806MW 93 278 314 355 407 443 512 584 673 813 1107

40 mm(16 in)

MW 121 364 410 463 532 579 669 763 879 1063 1447

MW 4 38 42 47 54 58 67 76 87 104 14

MW 24 86 97 108 123 134 153 174 198 238 32

MW 38 117 131 147 167 181 208 235 269 322 434

MW 66 182 204 228 260 282 323 366 418 501 675

MW 93 250 280 314 357 387 444 502 575 689 927

50 mm(20 in)

MW 121 327 365 410 467 505 579 656 751 900 1211

MW 4 35 39 43 49 53 60 67 77 91 121

MW 24 80 88 99 112 120 137 154 175 209 278

MW 38 108 120 134 151 163 186 209 238 283 377

MW 66 168 186 208 235 254 289 325 370 440 586

MW 93 230 256 285 323 348 397 447 508 604 805

60 mm(24 in)

MW 121 301 334 374 422 455 518 583 664 789 1051

Notes





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