thermal design calculation procedure (rev 00)

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  • 8/17/2019 Thermal Design Calculation Procedure (Rev 00)

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    Heat Exchanger Thermal Design Hetran 2006 Page 1

    File: cchp hex design2.EDR Date: 6/12/2015 Time: 11:18:13 PM

    Description

    Company:Location: Mashhad Passenger TerminalService of Unit: CCHP Our Reference:Item No.: Your Reference:Date: 6/12/2015 Rev No.: 00 Job No.: 01

    Exhaust Gas Water

    Remarks

    Cold SideHot SideFluid name

    Heading

    Application Options

    Gas, no phase change

    Specified in inputNormal

    Liquid, no phase changeSpecified in inputForced circulation

    Tube sideRatingProgram mode

    Location of hot fluid

    Vaporizer typeVaporization curveCold side application

    Condenser typeCondensation curve

    Hot side application

    Process Data

    2.2386

    450 180 120 140

    1.03 7

    0.14 0.340.00018 0.00035

    kg/skg/s

    °C°C

    bar

    bar m² K/W

    kg/s

    Program Program

    kW

    OutIn OutIn

    Heat Load Balance Options

    Heat exchanged

    Cold SideHot Side

    Fouling resistance

    Allowable pressure drop

    Operating pressure (absolute)

    Dew / Bubble pointTemperature

    Liquid quantityVapor quantityFluid quantity, total

    Databanks

    Use properties from the following:Use properties from the following:

    Weight flowrate or %Weight flowrate or %Cold side composition specification

    Hot side composition specification

    Aspen Plus or Aspen Properties run file

    Cold SideHot Side

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    Hot Side - ComponentComponents Source Vapor in Liquid in Liquid out Component

    type

    Carbondioxide

    Databank 14 Program

    Carbonmonoxide

    Databank 0.45 Program

    Oxygen Databank 0.5 ProgramNitrogen Databank 72 Program

    Nitrogendioxide

    Databank 0.35 Program

    Water Databank 12.7 Program

    Hot Side - Vapor PropertiesTemperature Specific heat Thermal

    cond.Viscosity Density Molecular

    weightDiffusivity

    °C kJ/(kg K) W/(m K) mPa s kg/m³ m²/s

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    Cold Side - ComponentComponents Source Liquid in Vapor in Vapor out Component

    type

    Water Databank Program

    Cold Side - Liquid PropertiesTemperature Specific heat Thermal

    cond.Viscosity Density Surface

    tension

    °C kJ/(kg K) W/(m K) mPa s kg/m³ N/m

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    Tubes

    mmPlain

    20

    Triangular

    mm

    mm

    mmmm#/mm

    mm

    mmTube wall roughness

    Tapered tube ends for knockback condensers

    Twisted tape widthTwisted tape ratio

    Outside/Inside surface area ratioSurface area per unit lengthFin densityFin thicknessFin height

    Tube pitchTube pattern

    Tube wall specificationTube wall thicknessTube outside diameter Tube type

    Bundle

    Program will optimize

    Program

    0

    ProgramProgram

    mm

    mmmmmm

    mmmmmm

    mmmm

    mmmm

    mmmmmmmmmmmm

    mmmmSpacer diameter

    Tie rod diameter

    Impingement plate perforated area %Impingement plate clearance to tube edgeImpingement plate distance in from shell IDImpingement plate thicknessImpingement plate width (normal to tube axis)Impingement plate length (parallel to tube axis)Impingement plate diameter

    to hor. center line, D2to vert. center line, D1

    Distance from tube center

    Minimum u-bend diameter Number of sealing strip pairs

    Number of tie rodsMaximum % deviation in tubes per passDesign symmetrical tube layout

    Pass partition lane width

    Baffle tube hole to tube ODBaffle OD to outer tube limitShell ID to baffle OD

    Diametric clearances

    Shell exit constructionShell entrance construction

    Percent of shell diameter for disengagementProvide disengagement space in shell

    Pool boiler options

    at sides, S3at bottom, S2at top, S1

    DistancePercShellIDOpen space between shell ID and outermost tube

    Outer tube limit diameter

    Impingement protection type

    Pass layout

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    Baffles

    Program

    Program

    Programmmmmmm

    mmmmmmmmTotal length of support rods per baffle

    Support rod diameter Inside diameter of ringInside diameter of ring

    U-bend mean radiusDistance between partial supports at u-bendDistance from nearest support/baffle to tangent of u-bendType U-bend support

    between bafflesat outletat inlet

    Number of intermediate supports

    Baffle cut orientationBaffle cut (% of diameter)Baffle type

    Rating/Simulation

    609.6

    152.4206.25206.25

    112000

    446211

    mmmmmmmmmm

    mm

    mmmm

    mmmmmm

    mmmmmmmmmm

    Shell outside diameter Shell inside diameter Baffle spacing center-center Baffle spacing at inletBaffle spacing at outletBaffle number Tube lengthTube number Tube passesShells in seriesShells in parallel

    Kettle outside diameter Kettle inside diameter

    Vapor belt outside diameter Vapor belt inside diameter Vapor belt length

    Shell cylinder thicknessFront head cylinder thicknessFront tubesheet thicknessRear tubesheet thicknessBaffle thickness

    Nozzles

    Diameter Quantity Orientation Dome OD

    mm mmHot Side Inlet Program

    Hot Side Outlet Program

    Hot Side Condensate

    Cold Side Inlet

    Cold Side Outlet

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    Nozzles

    ProgramProgram

    Program

    ProgramProgram

    Program

    mm

    mm

    mmmm

    mmManifold inside diameter Type of valveNumber of 90 degree elbows (R/D = 1.0)Number of 90 degree elbows (R/D = 1.5)Horizontal pipe straight lengthVertical pipe straight lengthPipe inside diameter

    OutletInlet

    Equivalent length of outlet piping (D)Equivalent length of inlet piping (C)

    of outlet piping back to column (B)of liquid level in column (A)

    Height above vessel center line

    Nozzle flange ratingNozzle flange type

    Flow direction for first tube pass

    Hot Side Cold Side

    Location of nozzle at u-bend

    Design Constraints

    Program

    ProgramProgram

    Program

    ProgramProgram

    0.14 0.34

    mmmm

    mm

    bar bar

    m/s m/sm/s m/s

    Maximum % of allowable pressure drop for each nozzle

    Shell diameter Tube length

    Tube passesBaffle spacing

    Increment Minimum Maximum

    Use shell ID or OD as referenceUse pipe or plate for small shellsMinimum shells in seriesMinimum shells in parallel

    Allowable number of baffles Allow baffles under nozzlesUse proportional baffle cut

    Allowable pressure drop

    Minimum fluid velocityMaximum fluid velocity

    Hot Side Cold Side

    Minimum % excess surface area required

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    MaterialsSA-204 K11820 Grd A PlateSA-516 K02700 Grd 70 PlateSA-204 K11820 Grd A Plate

    SA-204 K11820 Grd A PlateSA-179 K01200 Smls. tube

    W/(m K)

    Cylinder - hot sideCylinder - cold sideTubesheetDouble tubesheet (inner)BafflesTube material

    Thermal conductivity of tube material

    Tubesheet cladding - hot sideTubesheet cladding - cold sideGaskets - hot sideGaskets - cold side

    Specifications

    ASME Code Sec VIII Div 1

    Program

    ProgramProgram

    bar °Cbar bar mm

    Design Code

    Service classTEMA classMaterial standardDimensional standard

    Design pressureDesign temperatureVacuum design pressureTest pressureCorrosion allowance

    Hot Side Cold Side

    Thermal Analysis Options

    Program

    Program

    Program

    W/(m² K)

    °C

    kW/m²

    °C

    0

    ProgramHot / Cold side fouling ratioFouling calculation options

    Maximum number of design mode iterations

    Hot Side Cold SideHeat transfer coefficientHeat transfer coefficient multiplierPressure drop multiplier

    Percent of u-bend area used for heat transfer Maximum rating for thermosiphons

    Mean temperature differenceMinimum allowable temperature approachMinimum allowable MTD Ft correction factor Maximum allowable heat fluxFlow direction for first tube pass

    Simulation mode area convergence toleranceNumber of calculation intervalsType of interval calculation

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    Correlations

    Program

    ProgramProgram

    °C

    ProgramProgramProgram

    ProgramProgramProgram

    Program

    Program

    Cold SideHot Side

    Outlet NozzleInlet Nozzle

    Exiting tubesEntering tubes

    VelocityHeadsForPressureDrop

    Pressure Drop Options

    Tube side two phase pressure drop correlation

    Shell side flow analysis calculation method

    Mist flow heat transfer calculation methodTube side two phase heat transfer correlationShell side two phase heat transfer correlation

    Vaporization Options

    Liquid subcooling heat transfer methodTube side two phase heat transfer correlationShell side two phase heat transfer correlation

    Condensation Options

    Shell side two phase pressure drop correlation

    Minimum temperature difference for nucleate boilingSuppress nucleate boiling coefficient

    Condensation heat transfer modelDesuperheating heat transfer method

    Change Codes

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    Warnings and MessagesDescription

    Note 23 Cold side flowrate has been set at 8.5747 kg/s to balance heat loads.

    Note 588 A TEMA E shell with an odd number of horizontal cut single segmental baffles implies that theinlet and outlet nozzles should both be on the same side of the exchanger (top or bottom).

    Warning 47 The databank has been referenced for HOT Side fluid physical properties. The temperaturerange for which properties were stored in the databank has been exceeded by one or more ofthe components. ALL properties for that component will be taken at the limit of the range exceptfor vapor pressure and viscosity which will be extrapolated.

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    Optimization Path

    Shell Tube Length Pressure Drop Baffle Tube Units Total

    Size Actual Reqd. Shell Tube Spacing No. Pass No. P S Price

    mm mm mm bar bar mm Dollar(US)

    1 609.6 2000 1346.3 0.0604 0.09712 152.4 11 2 446 1 1 27690

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    Thermal Details - General

    590

    20

    2000

    8.57478.5747

    kg/s

    kg/s

    °C

    °C

    W/(m² K)

    m² K/W

    m/s

    bar

    kW

    W/(m² K)

    m²°C

    mm

    mm

    2.23862.2386

    180450140120

    177.45401.6

    0.000180.00035

    73.660.22

    0.097120.140.06040.34

    724.1

    138.7

    54.3145.18

    0.95

    BEM

    2

    single seg446

    hor 1 1

    24 hor %

    Gases (in/out)

    Liquids (in/out)

    Temperature (in/out)

    Dew point or bubble point

    Film coefficient

    Fouling resistance

    Velocity

    Pressure drop (allow./calc.)

    Total heat exchanged

    Overall coef. - dirty

    Effective surface areaMTD corrected

    MTD Ft correction factor

    Shell Side Tube Side

    Type

    Shell size

    Tube No-ODBaffles

    Tube passes

    ser par

    Thermal Details - Thermal Resistances

    33.2m²

    63.56

    150.3

    0.00665

    W/(m² K)

    m² K/W

    m² K/W

    2.78

    0.41

    35.9

    50.96

    138.7

    0.00721

    0.00035

    0.00018

    2.57

    4.86

    0.38

    2.85

    54.3

    91.9

    0.01088

    0.00266

    0.00137

    1.7

    24.48

    0.25

    14.38

    96.8 89.34 59.19

    0.00003

    %Tube side film

    Tube side fouling

    Max. foulSpec. foulClean

    %

    %

    %

    %

    Tube wall

    Shell side fouling

    Shell side film

    Distribution of overall resistance

    Tube side fouling (at tube ID)

    Shell side fouling

    Overall resistance

    Overall coefficient

    %Excess surface

    Area reqd.

    0.0

    0.0

    0.0

    0.0

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    Thermal Details - Coefficients

    W/(m² K)

    °C

    177.4

    1

    177.4

    26113.95

    144.21

    5401.6

    18097.49

    1

    130.01

    177.4

    5401.6

    1

    5401.6

    Gamma factor

    Beta factor

    Tube SideShell Side

    Mean metal temperature

    Fin efficiency factor

    Reynolds number Liquid cooling coefficient

    Boiling coefficient

    Liquid sensible coefficient

    Condensing coefficient

    Desuperheating coefficient

    As used in design

    User specified multiplier

    As specified by user in input

    As calculated by programFilm coefficients

    Vapor sensible coefficient

    Thermal Details - MTD and Flux

    °C

    145.18

    152.23

    0.95

    145.18

    13.3

    kW/m²

    MTD delta correction factor

    Flux

    Actual flux

    Boiling fluid

    Nucleate maximum flux

    Program maximum flux

    Specified maximum flux

    Controlling maximum flux

    Mean temperature difference

    Corrected MTD used in design

    LMTD

    MTD Ft correction factor

    Long. baffle efficiency factor

    Calculated corrected MTD

    User specified corrected MTD

    Flow direction

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    Thermal Details - Pressure Drop

    0.34

    bar

    m/s m/s

    0.06040.07423

    1

    0.14

    0.097120.098

    1

    0.86

    0.22

    0.17

    0.88

    1.14

    17.31

    43.6

    4.7

    14.7

    4.98

    88.42

    73.66

    55.39

    40.77

    9.47

    76.27

    5.93

    3.21

    bar

    0.01046

    0.02633

    0.00284

    0.00888

    0.00301

    0.0092

    0.07407

    0.00576

    0.00312

    bar

    1.12 0.00888 14.7 65.08 0.00498 5.12

    Outlet piping

    Inlet piping

    Pressure Drop

    Allowable

    Calculated, cleanCalculated, dirty

    User specified bundle multiplier

    Inlet nozzle

    Velocity and pressure drop

    Entering bundle

    Crossflow

    Through baffle windows

    Through tubes

    Exiting bundle

    Outlet nozzle

    Shell Side Tube Side

    %dp %dp

    Thermal Details - Shell Side Stream Analysis

    1188

    3058

    712

    3116

    42.19

    25.94

    24.28

    7.6

    699

    2232

    5953

    5953

    5953

    5953

    0.79

    4.76

    11.11

    mm

    kg/(m s²)kg/(m s²)

    1208Outlet nozzle

    Stream F: Pass lanes

    Diametric clearancesFlow fraction

    Shell exit

    Bundle exit

    Bundle entrance

    Shell entrance

    Rho*V2 analysis

    Inlet nozzle

    Stream E: Shell ID - bundle OTL

    Stream C: Baffle OD - shell ID

    Stream A: Baffle hole - tube OD

    Stream B: Crossflow

    TEMA limitRho*V2

    Shell Side Stream Analysis%

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    Mechanical Details - Setting Plan

    3080

    845 2000 235

    0

    3 3 7

    3 3 7

    6 0 0

    1 4 0 0

    1 8 1 6

    1 8 4

    Front Head 6 1 0

    Shell 6 1 0

    Rear Head 6 1 0

    Mechanical Details - Tube Layout

    1 32 103 134 145 176 187 198 209 2110 2211 2112 2213 23

    14 2315 2216 2117 2218 2119 2020 1921 1822 1723 1424 1325 1026 3

    446

    Shell IDO.T.L.

    590.5 mm579.4 mm

    Baffle cut to C/L 147.8 mm

    25

    12.5

    21.65

    223

    223

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    Mechanical Details - Shell

    609.6mm

    590.55

    101.6

    101.6

    609.6

    590.55

    304.8

    304.8

    1

    1

    1

    1

    1 1 1

    BEM

    mm

    mm

    mm

    mm

    mm

    mm

    mm

    mm

    mm

    27690Dollar(US)Total price

    TEMA type:

    Cylinder outside diameter

    Cylinder inside diameter

    Kettle outside diameter

    Vapor belt outside diameter

    Vapor belt length

    Inlet nozzle

    Outlet nozzle

    Drain

    Inlet dome

    Distributor belt

    Nozzles - nominal OD / quantity

    Arrangement - total shells: Connected in parallel series

    Shell Side

    Shell Front head

    Tube Side

    Mechanical Details - Bundle

    mm

    single seg

    206.25

    152.4206.25

    11

    24

    3.18

    11.11

    0.79

    4.766.35

    None

    579.44

    7.53

    7.53

    hor

    mm

    mm

    mm

    mmmm

    mm

    mm

    mm

    15.88mm

    2000

    31.75

    mm

    mm

    mm

    mm

    Tube length

    Tubesheet thickness (est.)

    Pass partition lane widthNumber of baffles

    Inlet spacing

    C-C spacingOutlet spacing

    Baffle type

    Supports

    Triple segmental intermediate cut

    Baffle thickness

    Impingement protection

    Sealing strips (pairs)

    Outer tube limit

    Open distance at top

    Baffle hole - tube od clearance

    Shell id - baffle od clearanceBaffle od - bundle otl clearance

    Shell id - bundle otl clearance

    Double/triple segmental outer cut

    Baffle cut %

    %

    %

    Open distance at bottom

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    Mechanical Details - Tubes

    mm

    mm 20

    1.24

    avgPlain

    1.14

    mm

    mm

    mm

    mm

    mm

    mm

    #/m

    mm

    2000

    446

    2530

    2

    31.75

    exp./seal wld

    15.88

    RibbonTube pass layout

    Twist ratio

    Twisted tape insert width

    %

    Tube o.d.

    Tube wall thickness

    Tube wall specificationTube type

    Fin height

    Fin thickness

    Fin density

    Area ratio Ao/Ai

    Deviation in tubes/pass

    Pass partition lane width

    Tube-tubesheet joint

    Tubesheet thickness (est.)

    Tube passes

    Tube patternTube pitch

    Number of tubes

    Tube length

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    Mechanical Details - Vibration Analysis

    0.4

    000

    0.4

    mm

    no

    358.650.86

    13.04

    0.07

    459.9

    no

    304.80.22

    11.62

    0.02

    409.9

    no

    358.650.88

    13.1

    0.07

    461.9

    no

    m/s

    m/s

    Hz

    mm

    mm

    Turbulent buffeting amplitude limit

    Vortex shedding amplitude limit

    Turbulent buffeting amplitude

    Vortex shedding amplitude

    Vibration Indication

    Tube unsupported span

    Tube natural frequency

    Crossflow velocity

    Critical velocity

    Vibration indicated if > 1.0

    Inlet Bundle Outlet U-bend

    Crossflow/critical velocity

    v

    vc

    v/vc

    fn

    For liquids and gases

    Mechanical Details - Acoustic Analysis

    mm

    no

    358.650.86

    no

    304.80.22

    no

    358.650.88

    no

    9.6 2.4 9.8

    m/s

    Hz

    Hz

    Hz

    m/s

    m/s

    and Condition "c" > 2000Resonance indicated if v > "c" velocity

    For gases only

    Resonance indicated if v > "b" velocity

    Vortex shedding frequency

    U-bendOutletBundleInlet

    Turbulent buffeting frequency

    Shell acoustic frequency

    Crossflow velocityTube unsupported span

    Condition "b" velocity

    Resonance indicated if 0.8 - 1.2

    Condition "a" ratio

    Acoustic resonance indication

    Condition "c"-

    Condition "c" velocity

    lv

    fa

    fs

    ftb

    fa/fs

    fa/ftb

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    Recap of Designs

    A

    Shell size mm 609.6

    Tube length - actual mm 2000

    Tube length - required mm 1346.3

    Pressure drop, SS bar 0.0604

    Pressure drop, TS bar 0.09712

    Baffle spacing mm 152.4

    Number of baffles 11

    Tube passes 2

    Tube number 446

    Number of units in series 1

    Number of units in parallel 1

    Total price Dollar(US) 27690

    RhoV2 problem no

    Vibration problem no

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    Calculation Details - Shell Side - Liquid Properties

    Temperature Density Specific Thermal Viscosity

    bulk wall heat conductivity bulk wall

    °C °C kg/m³ kJ/(kg K) W/(m K) mPa s mPa s120 136.26 942.78 4.209 0.687 0.242 0.215

    121.83 137.18 941.19 4.211 0.687 0.239 0.214

    123.64 138.69 939.61 4.213 0.687 0.235 0.211

    125.46 140.37 938.02 4.215 0.687 0.232 0.209

    127.29 142.04 936.44 4.217 0.687 0.229 0.207

    129.11 143.71 934.86 4.22 0.688 0.226 0.204

    130.93 145.38 933.28 4.222 0.688 0.223 0.202

    132.75 147.05 931.7 4.224 0.688 0.22 0.2

    134.57 148.72 930.12 4.226 0.688 0.218 0.198

    136.38 150.38 928.54 4.228 0.688 0.215 0.195

    138.19 152.7 926.96 4.23 0.689 0.212 0.193

    140 925.39 4.232 0.689 0.21

    Calculation Details - Shell Side - Heat Load

    Temp. Flow rate Sensible heat Total

    Liquid Liquid load

    °C kg/s kW kW120 8.5747

    121.83 8.5747 65.8 65.8

    123.64 8.5747 131.7 131.7

    125.46 8.5747 197.5 197.5

    127.29 8.5747 263.3 263.3129.11 8.5747 329.1 329.1

    130.93 8.5747 395 395

    132.75 8.5747 460.8 460.8

    134.57 8.5747 526.6 526.6

    136.38 8.5747 592.4 592.4

    138.19 8.5747 658.3 658.3

    140 8.5747 724.1 724.1

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    Calculation Details - Shell Side - Performance

    Temp. Heat load Overallcoefficient

    Area reqd. Temperaturedifference

    Pressuredrop

    °C % W/(m² K) % °C %

    Inlet 120 32.02121.83 9.09 138.1 9.13 145.18 2

    123.64 9.09 138.7 9.09 145.18 4.34

    125.46 9.09 138.8 9.09 145.18 4.94

    127.29 9.09 138.8 9.08 145.18 4.94

    129.11 9.09 138.9 9.08 145.18 4.94

    130.93 9.09 138.9 9.08 145.18 4.94

    132.75 9.09 138.9 9.08 145.18 4.94

    134.57 9.09 138.9 9.08 145.18 4.94

    136.38 9.09 138.9 9.08 145.18 4.94

    138.19 9.09 138.9 9.08 145.18 4.94

    140 9.09 138.4 9.12 145.18 2.45Outlet 140 19.68

    Calculation Details - Shell Side - Coefficients

    Temp. Flow rate Velocity Coefficients

    bulk Pr Re regime X-flow Window free forced Actual

    °C m/s m/s W/(m² K) W/(m² K) W/(m² K)120.91 1.47 12506.18 Turbulent 0.22 0.17 1263.5 4579.5 4579.5

    122.73 1.45 16237.94 Turbulent 0.22 0.17 1267.8 5328.3 5328.3

    124.55 1.43 17390.66 Turbulent 0.22 0.17 1271.1 5538 5538

    126.38 1.42 17625.58 Turbulent 0.22 0.17 1272.3 5558.8 5558.8

    128.2 1.4 17861.51 Turbulent 0.22 0.17 1277.6 5579.5 5579.5

    130.02 1.38 18097.49 Turbulent 0.22 0.17 1280.8 5600.1 5600.1

    131.84 1.36 18334.42 Turbulent 0.22 0.17 1284 5620.6 5620.6

    133.66 1.34 18572.3 Turbulent 0.22 0.17 1287.1 5641 5641

    135.48 1.33 18811.1 Turbulent 0.22 0.17 1290.3 5661.3 5661.3

    137.29 1.31 19049.89 Turbulent 0.22 0.17 1295.4 5681.4 5681.4

    139.09 1.3 15023.24 Turbulent 0.22 0.17 1296.3 4895.3 4895.3

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    Calculation Details - Tube Side - Vapor Properties

    Temperature Density Specific Thermal Viscosity

    bulk wall heat conductivity bulk wall

    °C °C kg/m³ kJ/(kg K) W/(m K) mPa s mPa s450 155.72 0.47 1.24 0.053 0.032 0.023

    426.22 153.45 0.49 1.232 0.051 0.032 0.023

    402.28 151.2 0.5 1.225 0.049 0.031 0.023

    378.19 148.99 0.52 1.217 0.048 0.03 0.023

    353.95 146.81 0.54 1.209 0.046 0.029 0.023

    329.54 144.67 0.57 1.201 0.044 0.028 0.023

    305 142.56 0.59 1.194 0.042 0.028 0.023

    280.29 140.5 0.62 1.186 0.04 0.027 0.023

    255.43 138.48 0.65 1.179 0.039 0.026 0.023

    230.43 136.5 0.68 1.172 0.037 0.025 0.023

    205.27 134.57 0.71 1.166 0.035 0.024 0.023

    180 0.75 1.161 0.033 0.023

    Calculation Details - Tube Side - Heat Load

    Temp. Total

    Vapor Vapor load

    °C kg/s kW kW450 2.2386

    426.22 2.2386 65.8 65.8

    402.28 2.2386 131.7 131.7

    378.19 2.2386 197.5 197.5

    353.95 2.2386 263.3 263.3329.54 2.2386 329.1 329.1

    305 2.2386 395 395

    280.29 2.2386 460.8 460.8

    255.43 2.2386 526.6 526.6

    230.43 2.2386 592.4 592.4

    205.27 2.2386 658.3 658.3

    180 2.2386 724.1 724.1

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    Calculation Details - Tube Side - Performance

    Temp. Heat load Overallcoefficient

    Area reqd. Temperaturedifference

    Pressuredrop

    °C % W/(m² K) % °C %

    Inlet 450 14.59426.22 9.09 148.4 8.5 145.18 7.57

    402.28 9.09 146.6 8.61 145.18 7.46

    378.19 9.09 144.7 8.71 145.18 7.34

    353.95 9.09 142.9 8.83 145.18 7.22

    329.54 9.09 141 8.94 145.18 7.09

    305 9.09 139.1 9.07 145.18 6.96

    280.29 9.09 137.2 9.2 145.18 6.82

    255.43 9.09 135.2 9.33 145.18 6.68

    230.43 9.09 133.3 9.46 145.18 6.53

    205.27 9.09 131.3 9.6 145.18 6.38

    180 9.09 129.4 9.75 145.18 6.21Outlet 180 9.14

    Calculation Details - Tube Side - Coefficients

    Temp. Flow Velocity Coefficients

    bulk Pr Re regime free forced Actual

    °C m/s W/(m² K) W/(m² K) W/(m² K)438.11 0.76 22816.72 Turbulent 86.94 191.2 191.2

    414.25 0.76 23388.01 Turbulent 84.01 188.6 188.6

    390.24 0.77 23998.21 Turbulent 81.06 186 186

    366.07 0.77 24652.08 Turbulent 78.1 183.3 183.3

    341.74 0.77 25355.15 Turbulent 75.12 180.6 180.6

    317.27 0.78 26113.95 Turbulent 72.13 177.9 177.9

    292.64 0.78 26936.6 Turbulent 69.12 175.1 175.1

    267.86 0.78 27832.5 Turbulent 66.09 172.4 172.4

    242.93 0.79 28812.61 Turbulent 63.05 169.6 169.6

    217.85 0.79 29892.12 Turbulent 59.99 166.8 166.8

    192.64 0.8 31088.71 Turbulent 56.9 164.1 164.1

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    Calculation Details -

    °C

    °C

    °Cm²

    W/(m² K)

    kW

    °C

    815.1

    150.3

    54.3

    99.92

    120 142.53

    450 146.93

    804.7

    138.7

    54.3

    106.88

    120 142.24

    450 150.81

    212.43146.93

    218.98150.81

    876

    54321Outlet temperature for pass

    Exchanger Clean Dirty

    Heat exchanged

    Transfer rateEffective surface area

    Corrected MTD

    Shell side temperature in/out

    Tube side temperature in/out