heat tracing insulation

7/29/2019 Heat Tracing Insulation

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Heat Tracing

Heat tracing is used to prevent heat loss from process fluids being transported in process fluidpipes, when there is risk of damage to piping, or interference with operation such as fouling or

blockage, caused by the congealing, increase in viscosity, or separation of components, in the

fluid below certain temperatures, or when there is risk of formation of corrosive substances orwater due to condensation in corrosive services. This prevention of heat loss is accomplished byemploying electrical tracing, or Steam tracing, and insulating both the process fluid pipe and the

tracer together, using appropriate insulation materials & metal lagging is vital on any application,

in an attempt to reduce heat loss from the pipe and tracer to their surroundings.

Industrial Electric Heating Tracing

The demands placed on heat tracing systems vary based on the design

parameters specific to each application. To meet these needs, Straight Line

Insulation I, L.P uses Thermon manufacturer as its supplier who has thewidest variety of electric heating cables and controls systems in the world.

Controlling a heat tracing circuit can be as simple as a mechanical thermostat.

Frequently, more sophisticated control and monitoring requirements are necessary. Whether itsa mechanical thermostat or a microprocessor-based control and monitoring system, Straight Line

Insulation can handle the need.


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Self-Regulating Heating Cables

Self-regulating heating cables increase power as temperatures fall and decreases

as temperatures rise. Our supplier Thermon manufactures a variety of self-regulating heating cables to meet the demands specific to each application.

Excellent for metallic or non-metallic piping and tanks, Straight Line Insulation

I, L.P uses Thermons self-regulating heating cables in which allows an ease

design and installation with applications ranging from freeze protection totemperature maintenance to foundation heating.

Power Connection Kit

Straight Line Insulation offers System supplied from Thermon designedspecifically for rapid, trouble-free installation of Thermon Heating Cables.

Available in two varieties, Thermon kits are approved for use in ordinary

(nonclassified) areas, hazardous (classified) areas, and Zone 1 and 2 classifiedareas.Terminator DP - Kit includes; NEMA 4X nonmetallic junction box withintegral gasket, three-point DIN mount terminal block with nickel-plated copper

terminals (600 V, 50 A), pipe-mounted fitting, stainless steel pipe attachment band for piping

10 or less. (PETK/SCTK termination kit required, order separately). DP...........................BSX,RSX, HTSX, VSX, HPT, FP.

Mechanical Thermostats

Controlling a heat tracing circuit can be as simple as a mechanical thermostat.Frequently, more sophisticated control and monitoring requirements are

necessary. Whether it's a mechanical thermostat or a microprocessor-based

control and monitoring system, Straight Line Insulation Can handle with thehelp and Engineering of Thermon.


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Heating Cables

BSXSelf-Regulating Heating CableFreeze Protection and Temp. Maintenance......to 150F

Maximum Exposure Temperature......................185F

Available Watt Densities..........3,5,8 &10 w/ft @ 50F

Available Voltage................110-120 or 208-277 VacAvailable with Fluoropolymer Overjacket (FOj)

Supplied by Thermon Heat Tracing.

HTSX

Self-Regulating Heating CableFreeze Protection and Temp. Maintenance.......to 250F

Maximum Exposure Temperature......................482FAvailable Watt Densities...3,6,9,12,15,& 20 w/ft @ 50F

Available Voltages..............110-120 or 208-277 Vac.

VSXSelf-Regulating Heating Cable

Freeze Protection and Temp. Maintenance.....up to 300F

Maximum Exposure Temperature......................482FAvailable Watt Densities....5, 10, 15, & 20 w/ft @ 50F

Available Voltages...............110-120 or 208-277 Vac.

HPTPower-Limiting Cables

Freeze Protection and Temp. Maintenance.....up to 300F

Maximum Exposure Temperature......................500FAvailable Watt Densities....5, 10, 15, & 20 w/ft @ 50F

Available Voltages..........................120-240 Vac.

Installation Process

Steam Tracing is described by attaching a

tubing (Copper or Stainless) containing saturatedsteam, also known as the "tracer", parallel to the

process fluid pipe. The two pipes are then also

insulated together with the specified insulation

and jacketed. Steam tracing is more laborintensive to install than electrical heat tracing, but


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there are very few risks associated with it. The temperature of the tracer also cannot exceed the

maximum saturation temperature of the steam, as it operates at specific steam pressures.

Steam Tracing may be done in one of two ways. Bare steam tracing is the most popular

choice as it is fairly easily installed and maintained and it is ideally suited to lower temperature

requirements. It is simply composed of a half inch or three quarters of an inch tubing (Copper orStainless) attached to the process fluid pipe by straps and both pipes are then insulated together.

The other available option is to make use of cemented steam tracing, during which heatconductive cement is placed around the steam tracer running parallel to the process fluid pipe,

(shown in figure 1b), in an attempt to increase the contact area available for heat transfer,

between the tracer and the process fluid pipe.

Electric Tracing is similar to steam tracing, but

instead there is a heating cable attached to the

process fluid pipe. It is described by attaching acable that is transmitting constant wattage to the

process fluid pipe. This system is monitored by aMicroprocessor-Based Control Units whichpermits on-off heat tracing control with numerous

capabilities. It also provides the heating and

temperature of cables.The heat cable and the pipeare also insulated together with the specified

insulation and jacketed. Electrical heat tracing is

less work labor than steam tracing, but there are very few risks associated with it.

SLI has a big reference contact list, 90 % of our work are from referrals or recurring clientele.

The numbers of tracers depends on the size of the pipe and the product temperature in theprocess line. The surrounding temperature and the insulation efficiency also have influence.

Tracer Identification Tags help facilitate maintenance of the steam circuit. As a minimum, the

tag should identify the circuit number, pipe or equipment number, and manifold points and/or

trap numb


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heat tracing insulation

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