Output Summary Page 1

Elaborado por: Ing. Luis Gonzales Davila

Fecha: 15/10/2020

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Process Conditions Outside Tubeside

Fluid name Agua Desmineralizada
Fluid condition Sens. Gas Sens. Liquid
Total flow rate (kg/s) 1682.400 0.283
Weight fraction vapor, In/Out 1.000 1.000 0.000 0.000
Temperature, In/Out (Deg C) 26.00 26.03 70.00 30.00
Skin temperature, Min/Max (Deg C) 26.19 27.85 30.10 66.20
Pressure, Inlet/Outlet (kPa) 101.334 101.287 548.719 548.679
Pressure drop, Total/Allow (Pa) (kPa) 46.26 0.00 0.040 25.007
Midpoint velocity (m/s) 9.66 2.167e-4
- In/Out (m/s) 2.223e-4 2.163e-4
Heat transfer safety factor (--) 1 1
Fouling (m2-K/W) 0.000000 0.000859
Exchanger Performance
Outside film coef (W/m2-K) 78.51 Actual U (W/m2-K) 3.434
Tubeside film coef (W/m2-K) 113.20 Required U (W/m2-K) 3.777
Clean coef (W/m2-K) 3.446 Area (m2) 742.204
Hot regime Sens. Liquid Overdesign (%) -9.08
Cold regime Sens. Gas Tube Geometry
EMTD (Deg C) 16.7 Tube type Plain
Duty (MegaWatts) 0.048 Tube OD (mm) 25.400
Unit Geometry Tube ID (mm) 22.098
Bays in parallel per unit 103 Length (m) 1.400
Bundles parallel per bay 1 Area ratio(out/in) (--) 1.14943
Extended area (m2) 742.204 Layout Staggered
Bare area (m2) 742.204 Trans pitch (mm) 57.150
Bundle width (m) 1.902 Long pitch (mm) 57.150
Nozzle Inlet Outlet Number of passes (--) 2
Number (--) 1 1 Number of rows (--) 2
Diameter (mm) 25.400 25.400 Tubecount (--) 66
Velocity (m/s) 5.554e-3 5.403e-3 Tubecount Odd/Even (--) 33 / 33
R-V-SQ (kg/m-s2) 3.011e-2 2.929e-2 Tube material 316 Stainless steel (17 Cr, 12 Ni)
Pressure drop (kPa) 1.656e-5 1.025e-5 Fin Geometry
Fan Geometry Type None
No/bay (--) 1 Fins/length fin/meter
Fan ring type 30 deg Fin root mm
Diameter (m) 1.200 Height mm
Ratio, Fan/bundle face area (--) 0.42 Base thickness mm
Driver power (kW) 2.87 Over fin mm
Tip clearance (mm) 9.525 Efficiency (%)
Efficiency (%) 65 Area ratio (fin/bare) (--)
Airside Velocities Actual Standard Material
Face (m/s) 5.20 5.11 Thermal Resistance; %
Maximum (m/s) 9.66 9.48 Air 4.37
Flow (100 m3/min) 855.396 840.217 Tube 3.49
Velocity pressure (Pa) 88.55 Fouling 0.34
Bundle pressure drop (Pa) 40.95 Metal 91.74
Bundle flow fraction (--) 1.000 Bond 0.00
Bundle 88.53 Airside Pressure Drop; % Louvers 0.00
Ground clearance 0.00 Fan guard 0.00 Hail screen 0.00
Fan ring 11.47 Fan area blockage 0.00 Steam coil 0.00
 Final Results Page 2

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Process Data Airside Tubeside Inlet Airside Velocities Actual Standard
Fluid name Agua Desmineralizada Face velocity (m/s) 5.20 5.11
Fluid condition Sens. Gas Sens. Liquid Maximum velocity (m/s) 9.66 9.48
Total flow rate (kg/s) 1682.400 0.283 Volumetric flow (100 m3/min) 855.396 840.217
Weight fraction vapor, In/Out (--) 1.000 1.000 0.000 0.000 Maximum mass velocity (kg/s-m2) 11.394
Temperature, In/Out (Deg C) 26.00 26.03 70.00 30.00 Air humidity (%)
Skin temperature, Min/Max (Deg C) 26.19 27.85 30.10 66.20 Volumetric flow per fan at fan inlet (100 m3/min) 8.305
Wall temperature, Min/Max (Deg C) 26.19 27.85 30.09 66.08 Velocity at fan inlet (m/s) 12.24
Pressure, In/Out (kPa) 101.334 101.287 548.719 548.679 Fan Description and Fan Power
Pressure drop, Total/Allowed (Pa) (kPa) 46.26 0.00 0.040 25.007 Number of fans per bay (--) 1
Pressure Drop, A-frame reflux section (kPa) Diameter (m) 1.200
Velocity - Midpoint (m/s) 9.66 2.167e-4 Tip clearance (mm) 9.525
- In/Out (m/s) 2.223e-4 2.163e-4 Ratio, fan area to bay face area (--) 0.42
Film coefficient, Bare/Extended (W/m2-K) 78.51 78.51 113.20 Fan ring type (--) 30 deg
Mole fraction inert (--) Percent open area - in fan guard (%) 0
Heat transfer safety factor (--) 1 1 - in hail screen (%) 0
Fouling resistance (m2-K/W) 0.000000 0.000859 Ratio, ground clearance to fan diameter (--)
Overall Performance Data Percent blockage, other obstruction (%) 0
Overall coef, Design/Clean/Actual (W/m2-K) 3.777 / 3.446 / 3.434 Bundle pressure drop/ Velocity pressure (Pa) 40.95 / 88.55
Heat duty, Calculated/Specified (MegaWatts) 0.0477 / 0.0467 Fan and drive efficiency (%) 65
Effective mean temperature difference (Deg C) 16.65 Motor power/fan-design air temperature (kW) 2.87
Motor power/fan-min air temperature (kW) 0.00
Ambient temperature, Max / Min (Deg C) -17.78 / -17.78
Two-Phase Parameters
Unit and Bundle Construction Information Method Inlet Center Outlet Mix F
Bays in parallel per unit (--) 103 Bundles in parallel/bay (--) 1
Extended area per unit (m2) 742.204 Bare area/unit (m2) 742.204 Bundle flow fraction (--) 1.000
Extended area per bundle (m2) 7.206 Bare area/bundle (m2) 7.206 Heat Transfer and Pressure Drop Parameters Tubeside Outside
Tubepasses/Tuberows (--) 2/ 2 Number of tubes/bundle (--) 66 Midpoint j-factor (--) 0.0073
Tubecount, Odd rows/Even rows (--) 33 / 33 Edge seals (--) Yes Heat transfer Wall Correction (--) 1.0000 0.9995
Bundle width (m) 1.902 Fan guard (--) No Row Correction (--) 0.7449
Clearance (mm) 9.525 Louvers (--) No Midpoint f-factor (--)3341.7300 0.0929
Header - depth (mm) 101.600 Steam coil (--) No Pressure drop Wall Correction (--) 1.0020 1.0005
Header Box Hail screen (--) No Row Correction (--) 0.0000
- Plate thickness (mm) 9.525 Tube support information Reynolds number Inlet (--) 0 15712
- Tubesheet thickness (mm) 15.875 -Number (--) 0 Midpoint (--) 0 15712
Plenum type Box - Width (mm) 0.000 Outlet (--) 0 15712
Weight/Bundle (kg) 343 Orientation (from horiz.) (deg) 0.00 Fouling layer thickness (mm) 0.000 0.000
Structure weight (kg) 80296 Tubeside volume (L) 67.5 Input minimum velocity (m/s)
Total weight, Dry / Wet (kg) 201260 / 208206 Input maximum velocity (m/s)
Ladder/walkway weight (kg) 85636 Cost Factor (--) 848.713 Input minimum wall temperature (Outlet C)
Tube Information Input maximum wall temperature (Deg C)
Straight length (m) 1.400 Tube type (--) Plain Thermal Resistance (Percent) Over
Unfinned length (mm) 0.000 Unheated length (mm) 31.750 Air Tube Fouling Metal Bond Design
Layout (--) Staggered Area ratio (fin/bare) (--) -- 4.37 3.49 0.34 91.74 0.00 -9.08
Transverse pitch (mm) 57.150 Fins per unit length (fin/meter) -- Airside Pressure Drop (Percent)
Longitudinal pitch (mm) 57.150 Fin root diameter (mm) -- Across bundle 88.53 Other obstruction 0.00
Tube form (--) Straight Fin height (mm) -- Fan ring 11.47 Steam coil 0.00
Outside diameter (mm) 25.400 Fin thickness at base (mm) -- Fan guard 0.00 Louvers 0.00
Inside diameter (mm) 22.098 Fin thickness at tip (mm) -- Ground clearance 0.00
Area ratio (out/in) (--) 1.14943 Fin type (--) -- Tube Nozzle (Perpendicular) Inlet Outlet
Over fin diameter (mm) -- Fin efficiency (%) -- Number of nozzles (--) 1 1
Tube material 316 Stainless steel (17 Cr, 12 Ni) Internal tube type None Diameter (mm) 25.400 25.400
Velocity (m/s) 5.554e-3 5.403e-3
Nozzle R-V-SQ (kg/m-s2) 3.011e-2 2.929e-2
Pressure drop (kPa) 1.656e-5 1.025e-5
 Final Results Page 3

Xace E Ver. 6.00 15/10/2020 11:26 SN: Vals100+ SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Mean Metal Temperatures

Mean tube metal temperature in each tubepass, (Deg C)

Tuberow Tubepass Inside Outside Radial
1 1 50.7 27.1 38.4
2 2 33.4 26.3 29.7
 Final Results Page 4

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

1.902 m
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Outer Wall Transverse Longitudinal Fin Bundle Information

Diameter Thickness Pitch Pitch Height Bundle width 1.902 m
Name Type (mm) (mm) (mm) (mm) (mm) Number of tube rows 2
Number of tubes 66
1 TubeType1 Plain 25.4000 1.6510 57.1500 57.1500 n/a Minimum wall clearance
Left 9.5250 mm
Right 9.5250 mm
Wall Wall
Number of tubes per pass
Number Clearance Number Clearance
Tubepass # 1: 33
Row of Tubes Tube Type (mm) Row of Tubes Tube Type (mm)
Tubepass # 2: 33
1 33 TubeType1 9.5250 2 33 TubeType1 38.1000
 Outside Incremental Monitor Page 5

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Point (--) 1 2 3 4 5 6 7 8 9 10
Increment (--) 1 1 1 2 2 2 3 3 3 4
Section (--) 1 1 1 1 1 1 1 1 1 1
Row (--) 0 1 2 0 1 2 0 1 2 0
Mass fraction vapor (--) 1 1 1 1 1 1 1 1 1 1
Bulk temperature (Deg C) 26.04 26.00 26.00 26.04 26.01 26.00 26.03 26.01 26.00 26.03
Skin temperature (Deg C) 27.85 26.19 27.64 26.21 27.45 26.24
MTD (Deg C) 41.4 4.2 36.7 4.8 32.5 5.4
Fin tip temperature (Deg C)
Pressure (kPa) 101.293 101.313 101.334 101.293 101.313 101.334 101.293 101.313 101.334 101.293
Pressure drop (kPa) 0.021 0.020 0.021 0.020 0.020 0.020
Friction loss (kPa) 0.021 0.020 0.021 0.020 0.020 0.020
Static head loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000
Momentum loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000
Fluid velocity (m/s) 5.20 9.66 9.66 5.20 9.66 9.66 5.20 9.66 9.66 5.20
Shear stress (Pa)
Area (m2) 0.360 0.360 0.360 0.360 0.360 0.360
Duty (MegaWatts) 5.660e-5 5.767e-6 5.032e-5 6.472e-6 4.450e-5 7.280e-6
Heat flux (W/m2) 157.09 16.01 139.66 17.96 123.52 20.21
Calculated heat flux (W/m2) 142.78 14.56 126.99 16.34 112.29 18.38
Critical heat flux (W/m2)
Local overall U (W/m2-K) 3.447 3.427 3.460 3.416 3.453 3.410
Outside h (W/m2-K) 78.346 78.552 78.395 78.579 78.420 78.577
Sensible liquid h (W/m2-K)
Sensible vapor h (W/m2-K) 78.35 78.55 78.39 78.58 78.42 78.58
Condensate film coefficient (W/m2-K)
Vapor phase h (W/m2-K)
Nucleate boiling h (W/m2-K)
Convective boiling h (W/m2-K)
Film boiling h (W/m2-K)
Boiling thin film h (W/m2-K)
Natural convective h (W/m2-K)
Radiation coefficient (W/m2-K)
Overall Reynolds (--) 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1
Vapor Reynolds (--) 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1
Liquid Reynolds (--)
Vapor Prandtl (--) 0.7054 0.7054 0.7054 0.7054 0.7054 0.7054
Liquid Prandtl (--)
Flow regime parameter (--)
Condensate regime (--)
Mist flow ratio (--)
Boiling flow regime (--)
Boiling mechanism (--)
 Outside Incremental Monitor Page 6

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Point (--) 11 12 13 14 15 16 17 18 19 20
Increment (--) 4 4 5 5 5 6 6 6 7 7
Section (--) 1 1 1 1 1 1 1 1 1 1
Row (--) 1 2 0 1 2 0 1 2 0 1
Mass fraction vapor (--) 1 1 1 1 1 1 1 1 1 1
Bulk temperature (Deg C) 26.01 26.00 26.03 26.01 26.00 26.03 26.01 26.00 26.03 26.01
Skin temperature (Deg C) 27.29 26.27 27.14 26.30 27.01 26.34 26.90
MTD (Deg C) 28.8 6.1 25.5 6.8 22.7 7.7 20.1
Fin tip temperature (Deg C)
Pressure (kPa) 101.313 101.334 101.293 101.313 101.334 101.293 101.313 101.334 101.293 101.313
Pressure drop (kPa) 0.020 0.020 0.020 0.020 0.020 0.020 0.020
Friction loss (kPa) 0.020 0.020 0.020 0.020 0.020 0.020 0.020
Static head loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Momentum loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Fluid velocity (m/s) 9.66 9.66 5.20 9.66 9.66 5.20 9.66 9.66 5.20 9.66
Shear stress (Pa)
Area (m2) 0.360 0.360 0.360 0.360 0.360 0.360 0.360
Duty (MegaWatts) 3.939e-5 8.204e-6 3.486e-5 9.248e-6 3.087e-5 1.042e-5 2.735e-5
Heat flux (W/m2) 109.33 22.77 96.74 25.67 85.69 28.92 75.91
Calculated heat flux (W/m2) 99.38 20.71 87.94 23.34 77.89 26.30 69.01
Critical heat flux (W/m2)
Local overall U (W/m2-K) 3.448 3.412 3.442 3.414 3.438 3.414 3.435
Outside h (W/m2-K) 78.441 78.573 78.460 78.568 78.477 78.563 78.492
Sensible liquid h (W/m2-K)
Sensible vapor h (W/m2-K) 78.44 78.57 78.46 78.57 78.48 78.56 78.49
Condensate film coefficient (W/m2-K)
Vapor phase h (W/m2-K)
Nucleate boiling h (W/m2-K)
Convective boiling h (W/m2-K)
Film boiling h (W/m2-K)
Boiling thin film h (W/m2-K)
Natural convective h (W/m2-K)
Radiation coefficient (W/m2-K)
Overall Reynolds (--) 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1
Vapor Reynolds (--) 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1
Liquid Reynolds (--)
Vapor Prandtl (--) 0.7054 0.7054 0.7054 0.7054 0.7054 0.7054 0.7054
Liquid Prandtl (--)
Flow regime parameter (--)
Condensate regime (--)
Mist flow ratio (--)
Boiling flow regime (--)
Boiling mechanism (--)
 Outside Incremental Monitor Page 7

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Point (--) 21 22 23 24 25 26 27 28 29 30
Increment (--) 7 8 8 8 9 9 9 10 10 10
Section (--) 1 1 1 1 1 1 1 1 1 1
Row (--) 2 0 1 2 0 1 2 0 1 2
Mass fraction vapor (--) 1 1 1 1 1 1 1 1 1 1
Bulk temperature (Deg C) 26.00 26.02 26.01 26.00 26.02 26.01 26.00 26.02 26.01 26.00
Skin temperature (Deg C) 26.38 26.80 26.43 26.71 26.49 26.63 26.56
MTD (Deg C) 8.7 17.8 9.8 15.8 11.0 14.0 12.4
Fin tip temperature (Deg C)
Pressure (kPa) 101.334 101.293 101.313 101.334 101.293 101.313 101.334 101.293 101.313 101.334
Pressure drop (kPa) 0.020 0.020 0.020 0.020 0.020 0.020 0.020
Friction loss (kPa) 0.020 0.020 0.020 0.020 0.020 0.020 0.020
Static head loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Momentum loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Fluid velocity (m/s) 9.66 5.20 9.66 9.66 5.20 9.66 9.66 5.20 9.66 9.66
Shear stress (Pa)
Area (m2) 0.360 0.360 0.360 0.360 0.360 0.360 0.360
Duty (MegaWatts) 1.180e-5 2.423e-5 1.332e-5 2.148e-5 1.505e-5 1.904e-5 1.706e-5
Heat flux (W/m2) 32.75 67.26 36.98 59.61 41.77 52.84 47.35
Calculated heat flux (W/m2) 29.79 61.15 33.63 54.20 37.99 48.05 43.06
Critical heat flux (W/m2)
Local overall U (W/m2-K) 3.432 3.432 3.437 3.430 3.444 3.427 3.461
Outside h (W/m2-K) 78.558 78.505 78.551 78.517 78.544 78.527 78.534
Sensible liquid h (W/m2-K)
Sensible vapor h (W/m2-K) 78.56 78.50 78.55 78.52 78.54 78.53 78.53
Condensate film coefficient (W/m2-K)
Vapor phase h (W/m2-K)
Nucleate boiling h (W/m2-K)
Convective boiling h (W/m2-K)
Film boiling h (W/m2-K)
Boiling thin film h (W/m2-K)
Natural convective h (W/m2-K)
Radiation coefficient (W/m2-K)
Overall Reynolds (--) 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1
Vapor Reynolds (--) 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1 15718.1
Liquid Reynolds (--)
Vapor Prandtl (--) 0.7054 0.7054 0.7054 0.7054 0.7054 0.7054 0.7054
Liquid Prandtl (--)
Flow regime parameter (--)
Condensate regime (--)
Mist flow ratio (--)
Boiling flow regime (--)
Boiling mechanism (--)
 Tubeside Incremental Monitor Page 8

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Point (--) 1 2 3 4 5 6 7 8 9 10 11
Increment (--) 1 2 3 4 5 6 7 8 9 10 11
Section (--) 1 1 1 1 1 1 1 1 1 1 1
Row (--) 1 1 1 1 1 1 1 1 1 1 1
Length from inlet (m) 0.000 0.140 0.280 0.420 0.560 0.700 0.840 0.980 1.120 1.260 1.400
Mass fraction vapor (--) 0 0 0 0 0 0 0 0 0 0 0
Bulk temperature (Deg C) 70.00 64.99 60.55 56.61 53.14 50.06 47.34 44.92 42.79 40.89 39.21
Skin temperature (Deg C) 66.20 61.76 57.62 53.98 50.76 47.93 45.43 43.22 41.27 39.54
MTD (Deg C) 41.4 36.7 32.5 28.8 25.5 22.7 20.1 17.8 15.8 14.0
Pressure (kPa) 548.719 548.717 548.715 548.713 548.711 548.709 548.707 548.705 548.703 548.701 548.699
Enhanced pressure drop mult (--)
Pressure drop (kPa) 2.254e-3 1.947e-3 1.947e-3 1.947e-3 1.947e-3 1.948e-3 1.948e-3 1.949e-3 1.949e-3 2.176e-3
Friction loss (kPa) 2.254e-3 1.947e-3 1.947e-3 1.947e-3 1.947e-3 1.948e-3 1.948e-3 1.949e-3 1.949e-3 2.176e-3
Static head loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Momentum loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Fluid velocity (m/s) 2.220e-4 2.212e-4 2.206e-4 2.200e-4 2.195e-4 2.191e-4 2.187e-4 2.184e-4 2.181e-4 2.178e-4
Shear stress (Pa) 8.154e-2 7.860e-2 7.860e-2 7.861e-2 7.863e-2 7.865e-2 7.866e-2 7.868e-2 7.870e-2 7.872e-2
Area (m2) 0.360 0.360 0.360 0.360 0.360 0.360 0.360 0.360 0.360 0.360
Duty (MegaWatts) 5.660e-5 5.032e-5 4.450e-5 3.939e-5 3.486e-5 3.087e-5 2.735e-5 2.423e-5 2.148e-5 1.904e-5
Heat flux (W/m2) 180.56 160.53 141.97 125.66 111.20 98.49 87.25 77.31 68.52 60.74
Calculated heat flux (W/m2) 164.12 145.97 129.07 114.23 101.08 89.53 79.32 70.29 62.30 55.23
Critical heat flux (W/m2)
Overall U (W/m2-K) 3.45 3.46 3.45 3.45 3.44 3.44 3.44 3.43 3.43 3.43
Tubeside h (W/m2-K) 126.90 144.18 134.39 128.44 121.31 117.60 114.26 111.50 109.09 106.94
Enhanced heat transfer mult (--)
Sensible liquid h (W/m2-K) 126.90 144.18 134.39 128.44 121.31 117.60 114.26 111.50 109.09 106.94
Sensible vapor h (W/m2-K)
Condensate film h (W/m2-K)
Vapor phase h (W/m2-K)
Nucleate boiling h (W/m2-K)
Convective boiling h (W/m2-K)
Film boiling h (W/m2-K)
Boiling thin film h (W/m2-K)
Natural convective h (W/m2-K)
Radiation coefficient (W/m2-K)
Overall Reynolds (--) 0.00492 0.00490 0.00489 0.00488 0.00486 0.00485 0.00484 0.00484 0.00483 0.00482
Vapor Reynolds (--)
Liquid Reynolds (--) 0.00492 0.00490 0.00489 0.00488 0.00486 0.00485 0.00484 0.00484 0.00483 0.00482
Vapor Prandtl (--)
Liquid Prandtl (--) 6191.74 6267.64 6336.67 6399.02 6455.25 6505.87 6551.38 6592.25 6628.90 6661.74
Flow regime parameter (--)
Condensate regime (--) Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq
Mist flow ratio (--)
Boiling regime (--)
Boiling mechanism (--)
 Tubeside Incremental Monitor Page 9

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Point (--) 12 13 14 15 16 17 18 19 20 21 22
Increment (--) 1 2 3 4 5 6 7 8 9 10 11
Section (--) 1 1 1 1 1 1 1 1 1 1 1
Row (--) 2 2 2 2 2 2 2 2 2 2 2
Length from inlet (m) 0.000 0.140 0.280 0.420 0.560 0.700 0.840 0.980 1.120 1.260 1.400
Mass fraction vapor (--) 0 0 0 0 0 0 0 0 0 0 0
Bulk temperature (Deg C) 30.00 30.51 31.08 31.72 32.44 33.26 34.17 35.21 36.39 37.71 39.21
Skin temperature (Deg C) 30.10 30.60 31.17 31.83 32.57 33.40 34.39 35.47 36.69 38.12
MTD (Deg C) 4.2 4.8 5.4 6.1 6.8 7.7 8.7 9.8 11.0 12.4
Pressure (kPa) 548.679 548.681 548.683 548.685 548.687 548.689 548.691 548.693 548.695 548.697 548.699
Enhanced pressure drop mult (--)
Pressure drop (kPa) 2.179e-3 1.952e-3 1.952e-3 1.952e-3 1.952e-3 1.951e-3 1.951e-3 1.951e-3 1.950e-3 2.176e-3
Friction loss (kPa) 2.179e-3 1.952e-3 1.952e-3 1.952e-3 1.952e-3 1.951e-3 1.951e-3 1.951e-3 1.950e-3 2.176e-3
Static head loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Momentum loss (kPa) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Fluid velocity (m/s) 2.163e-4 2.164e-4 2.165e-4 2.166e-4 2.167e-4 2.168e-4 2.170e-4 2.172e-4 2.173e-4 2.175e-4
Shear stress (Pa) 7.884e-2 7.883e-2 7.882e-2 7.881e-2 7.880e-2 7.879e-2 7.878e-2 7.876e-2 7.875e-2 7.873e-2
Area (m2) 0.360 0.360 0.360 0.360 0.360 0.360 0.360 0.360 0.360 0.360
Duty (MegaWatts) 5.767e-6 6.472e-6 7.280e-6 8.204e-6 9.248e-6 1.042e-5 1.180e-5 1.332e-5 1.505e-5 1.706e-5
Heat flux (W/m2) 18.40 20.65 23.22 26.17 29.50 33.24 37.65 42.50 48.01 54.43
Calculated heat flux (W/m2) 16.73 18.79 21.12 23.80 26.83 30.22 34.24 38.65 43.66 49.49
Critical heat flux (W/m2)
Overall U (W/m2-K) 3.43 3.42 3.41 3.41 3.41 3.41 3.43 3.44 3.44 3.46
Tubeside h (W/m2-K) 106.98 98.00 94.20 95.51 97.16 97.17 111.61 116.47 123.24 145.56
Enhanced heat transfer mult (--)
Sensible liquid h (W/m2-K) 106.98 98.00 94.20 95.51 97.16 97.17 111.61 116.47 123.24 145.56
Sensible vapor h (W/m2-K)
Condensate film h (W/m2-K)
Vapor phase h (W/m2-K)
Nucleate boiling h (W/m2-K)
Convective boiling h (W/m2-K)
Film boiling h (W/m2-K)
Boiling thin film h (W/m2-K)
Natural convective h (W/m2-K)
Radiation coefficient (W/m2-K)
Overall Reynolds (--) 0.00478 0.00478 0.00479 0.00479 0.00479 0.00480 0.00480 0.00480 0.00481 0.00481
Vapor Reynolds (--)
Liquid Reynolds (--) 0.00478 0.00478 0.00479 0.00479 0.00479 0.00480 0.00480 0.00480 0.00481 0.00481
Vapor Prandtl (--)
Liquid Prandtl (--) 6854.28 6844.49 6833.53 6821.25 6807.46 6791.98 6774.63 6755.10 6733.19 6708.60
Flow regime parameter (--)
Condensate regime (--) Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq Sens Liq
Mist flow ratio (--)
Boiling regime (--)
Boiling mechanism (--)
 Temperature Profile Monitor Page 10

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Notes: Shaded areas contain values for tubeside fluid
3 values printed per data point: Top value = Temperature (Deg C)
Middle Value = Pressure (kPa)
Bottom value = Weight fraction vapor, In/Out
Section 1 - Increments
1 2 3 4 5 6 7 8 9 10 First
Row Pass Tube
26.04 26.04 26.03 26.03 26.03 26.03 26.03 26.02 26.02 26.02
101.293 101.293 101.293 101.293 101.293 101.293 101.293 101.293 101.293 101.293
1 1 1 1 1 1 1 1 1 1
1 + 70.00 64.99 60.55 56.61 53.14 50.06 47.34 44.92 42.79 40.89 39.21 - 1 1
1 + 548.719 548.717 548.715 548.713 548.711 548.709 548.707 548.705 548.703 548.701 548.699 - 1 1
1 + 0 0 0 0 0 0 0 0 0 0 0 - 1 1
26.00 26.01 26.01 26.01 26.01 26.01 26.01 26.01 26.01 26.01
101.313 101.313 101.313 101.313 101.313 101.313 101.313 101.313 101.313 101.313
1 1 1 1 1 1 1 1 1 1
2 - 30.00 30.51 31.08 31.72 32.44 33.26 34.17 35.21 36.39 37.71 39.21 + 2 1
2 - 548.679 548.681 548.683 548.685 548.687 548.689 548.691 548.693 548.695 548.697 548.699 + 2 1
2 - 0 0 0 0 0 0 0 0 0 0 0 + 2 1
26.00 26.00 26.00 26.00 26.00 26.00 26.00 26.00 26.00 26.00
101.334 101.334 101.334 101.334 101.334 101.334 101.334 101.334 101.334 101.334
1 1 1 1 1 1 1 1 1 1
 Pressure Drop Monitor Page 11

Xace E Ver. 6.00 15/10/2020 11:26 SN: Vals100+ SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Four values printed in pressure drop monitor per data point:
Top value - Temperature (Deg C)
Second value - Weight fraction vapor
Third value - Flow rate (kg/s)
Bottom value - Pressure drop (kPa)
Monitor Pass Arrangement Diagram

Section 1
Row
1 39.21 1
1 0 1
1 8.3260e-5 1
1 0.020 1

2 30.00 2
2 0 2
2 8.3260e-5 2
2 0.020 2
 API 661 Air-Cooled Heat Exchanger - Specification Sheet
Job No. Item No.
Page Page 12 By
Date 15/10/2020 Revision
Proposal No. Contract No.
Inquiry No. Order No.

Manufacturer Heat exchanged (Watts) 47667.6

Model no. Surface/Item-Finned tube (m2) 742.204
Customer Bare tube (m2) 742.204
Plant location MTD, Eff. (Deg. C) 16.7
Service Transfer rate-Finned (W/m2-K) 3.434
Type draft FORCED Bare tube, service (W/m2-K) 3.43
Bay size (WxL) (m) 1.915 x 1.400 Bare tube, clean (W/m2-K) 3.45
No. of bays/Items 103

Basic design data

Pressure design code Structural code
Tube bundle code stamped Flammable service
Heating coil code stamped Lethal/toxic service
Performance Data - Tube Side
Fluid name Agua Desmineralizada In Out
Total fluid entering (kg/s) 0.28300 Total flow rate (Liq/Vap) (kg/s) 0.28300 / 0.00000 0.28300 / 0.00000
Dew/bubble point (Deg. C) / Water/Steam (kg/s) 0.00000 / 0.00000 0.00000 / 0.00000
(Deg. C) Noncondensables (kg/s) 0.00000 0.00000
Latent heat (kJ/kg) Molecular Wt. (Vap/Non-cond) / /
Inlet pressure (kPa) 548.719 Density (Liq/Vap) (kg/m3) 976.360 / 1003.67 /
Pressure drop (All/Calc) (kPa) 25.007 / 0.040 Specific heat (Liq/Vap) (kJ/kg-C) 4.2001 / 4.2231 /
Velocity (Allow/Calc) (m/s) / 2.193e-4 Thermal conductivity (Liq/Vap) (W/m-C) 0.6618 / 0.6184 /
Inside fouling resistance (m2-K/W) 0.000859 Viscosity (Liq/Vap) (mN-s/m2) 973.361 / 1003.67 /
In Out
Temperature (Deg. C) 70.00 30.00

Performance Data - Air Side

Air inlet temperature (Deg. C) 26.00 Face velocity (m/s) 5.11
Air flow rate/item (m3/s) 1400.36 Minimum design ambient temp. (Deg. C) -17.78
Mass velocity (kg/s-m2) Altitude (m) 0.000
Air outlet temperature (Deg. C) 26.03 Static pressure (Pa) 40.95
Air flow rate/fan (m3/s) 13.841

Design, Material, and Construction

Design pressure (kPaG) Heating Coil
Test pressure (kPaG) No. of tubes
Design temperature (Deg. C) Tube outside diameter (mm)
Min. design metal temp. (Deg. C) Tube material
Tube bundle Fin material and type
Size (WxL) (m) 1.902 X 1.400 Fin thickness (mm)
No./Bay 1 ASME Code, Sec. VIII, Div. 1
Number of tube rows 2 Heating fluid
Bundles in parallel 103 Heating fluid flowrate (kg/s)
Bundles in series Temperature (In/Out) (Deg. C) /
Structure mounting Inlet pressure (kPa)
Pipe rack beams Pressure drop (All/Calc) (kPa) /
Ladders, walkways, platforms Design temperature (Deg. C)
Structure surface prep. Design pressure (kPa)
Header surface prep. Inlet/Outlet nozzle /
Louver Header
Material Type
Action control Material
Action type Corrosion Allowance (mm)
No. of passes 2
 API 661 Air-Cooled Heat Exchanger - Specification Sheet
Job No. Item No.
Page Page 13 By
Date Revision
Proposal No. Contract No.
Inquiry No. Order No.

Design, Material, and Construction (continued)

Header (continued) No./Bundle 66
Slope Length (m) 1.400
Plug material Pitch (mm) 57.150
Gasket material Layout Triangular
Nozzle No. Size; (mm) Rating/Facing Fin
Inlet 1 25.400 Type None
Outlet 1 25.400 Material Aluminum 1060 - H14
Vent Thickness (mm)
Drain Selection temp. (C)
Chemical Cleaning Outside diameter (mm)
Min. Wall Thk. Fin density (fin/meter)
Tube ASME Code, Sec. VIII, Div. 1
Material 316 Stainless steel (17 Cr, 12 Ni) Customer Specifications
Tube outside diameter (mm) 25.400
Average wall thickness (mm) 1.651

Mechanical Equipment
Fan RPM
Manufacturer Unknown Manufacturer Service factor
No./Bay 1 Enclosure
RPM (Revs/min.) 0 Voltage
Diameter (m) 1.200 Phase
No. of blades Cycle
Angle (degrees) Fan noise level (dB)
Pitch adjustment Speed Reducer
Blade material Type
Hub material Manufacturer
@design temp No./Bay
@min. ambient temp Service factor
Tip speed Speed ratio
Driver Support
Type Vib. switch
Manufacturer Enclosure
No./Bay
Driver 2.87
Controls - Air Side
Air recirculation Louvers
Degree control of outlet process temp. Positioner
(Max. Cooling),+/- / Signal air pressure (kPa)
Action on control signal failure From To
Fan pitch From To
Louvers Supply air pressure (kPa)
Actuator air supply From To
Fan From To

Shipping
Plot area (WxL) (m) 1.915 x 1.400 Total (kg) 201260
Bundle weight (kg) 342.99 Shipping (kg)
Bay (kg)
 Properties Profile Monitor Page 14

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Physical Properties Profile: Hot Tubeside (Agua Desmineralizada)
Reference pressure; (kPa) (P1= 548.719)
(P) 1 2 3 4 5 6 7 8 9 10
Temperature; (C) 1 70.00 68.62 67.24 65.86 64.48 63.10 61.73 60.35 58.97 57.59
Heat duty/flow rate; (kJ/kg) 1 0.0000 5.7975 11.5960 17.3956 23.1964 28.9982 34.8011 40.6052 46.4103 52.2165
Weight fraction vapor 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Liquid Properties
Density; (kg/m3) 1 976.360 977.302 978.243 979.185 980.127 981.068 982.010 982.952 983.894 984.835
Viscosity; (mN-s/m2) 1 973.360 974.274 975.195 976.125 977.063 978.011 978.967 979.931 980.905 981.888
Thermal conductivity; (W/m-C) 1 0.6618 0.6603 0.6588 0.6573 0.6558 0.6543 0.6528 0.6513 0.6498 0.6483
Enthalpy; (kJ/kg) 1 0.0000 -5.7975 -11.596 -17.396 -23.196 -28.998 -34.801 -40.605 -46.410 -52.217
Specific heat; (kJ/kg-C) 1 4.2001 4.2009 4.2017 4.2025 4.2032 4.2040 4.2048 4.2056 4.2064 4.2072
Surface tension; (mN/m) 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Critical pressure; (kPa) 1 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Latent heat; (kJ/kg) 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
 Properties Profile Monitor Page 15

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Physical Properties Profile: Hot Tubeside (Agua Desmineralizada)
Reference pressure; (kPa) (P1= 548.719)
(P) 11 12 13 14 15 16 17 18 19 20
Temperature; (C) 1 56.21 54.83 53.45 52.07 50.69 49.31 47.93 46.55 45.17 43.79
Heat duty/flow rate; (kJ/kg) 1 58.0238 63.8322 69.6417 75.4523 81.2640 87.0767 92.8906 98.7056 104.522 110.339
Weight fraction vapor 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Liquid Properties
Density; (kg/m3) 1 985.777 986.719 987.661 988.602 989.544 990.486 991.428 992.369 993.311 994.253
Viscosity; (mN-s/m2) 1 982.880 983.881 984.892 985.913 986.943 987.983 989.033 990.094 991.164 992.246
Thermal conductivity; (W/m-C) 1 0.6468 0.6453 0.6438 0.6423 0.6408 0.6393 0.6378 0.6363 0.6348 0.6333
Enthalpy; (kJ/kg) 1 -58.024 -63.832 -69.642 -75.452 -81.264 -87.077 -92.891 -98.706 -104.52 -110.34
Specific heat; (kJ/kg-C) 1 4.2080 4.2088 4.2096 4.2104 4.2112 4.2120 4.2128 4.2136 4.2144 4.2151
Surface tension; (mN/m) 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Critical pressure; (kPa) 1 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Latent heat; (kJ/kg) 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
 Properties Profile Monitor Page 16

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Physical Properties Profile: Hot Tubeside (Agua Desmineralizada)
Reference pressure; (kPa) (P1= 548.719)
(P) 21 22 23 24 25 26 27 28 29 30
Temperature; (C) 1 42.41 41.04 39.66 38.28 36.90 35.52 34.14 32.76 31.38 30.00
Heat duty/flow rate; (kJ/kg) 1 116.157 121.976 127.797 133.618 139.441 145.265 151.089 156.915 162.743 168.569
Weight fraction vapor 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Liquid Properties
Density; (kg/m3) 1 995.194 996.136 997.078 998.020 998.962 999.903 1000.84 1001.79 1002.73 1003.67
Viscosity; (mN-s/m2) 1 993.337 994.440 995.554 996.679 997.814 998.962 1000.12 1001.29 1002.48 1003.67
Thermal conductivity; (W/m-C) 1 0.6318 0.6303 0.6288 0.6273 0.6258 0.6243 0.6228 0.6213 0.6199 0.6184
Enthalpy; (kJ/kg) 1 -116.16 -121.98 -127.80 -133.62 -139.44 -145.26 -151.09 -156.92 -162.74 -168.57
Specific heat; (kJ/kg-C) 1 4.2159 4.2167 4.2175 4.2183 4.2191 4.2199 4.2207 4.2215 4.2223 4.2231
Surface tension; (mN/m) 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Critical pressure; (kPa) 1 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Latent heat; (kJ/kg) 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
 Properties Profile Monitor Page 17

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Physical Properties Profile: Cold Outside
Reference pressure; (kPa) (P1= 101.334)
(P) 1 2 3 4 5 6 7 8 9 10
Temperature; (C) 1 31.56 31.37 31.17 30.98 30.79 30.60 30.41 30.22 30.02 29.83
Heat duty/flow rate; (kJ/kg) 1 5.5899 5.3971 5.2043 5.0115 4.8188 4.6260 4.4332 4.2405 4.0477 3.8549
Weight fraction vapor 1 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
Vapor Properties
Density; (kg/m3) 1 1.1585 1.1593 1.1600 1.1607 1.1615 1.1622 1.1629 1.1637 1.1644 1.1651
Viscosity; (mN-s/m2) 1 0.0187 0.0187 0.0186 0.0186 0.0186 0.0186 0.0186 0.0186 0.0186 0.0186
Thermal conductivity; (W/m-C) 1 0.0267 0.0266 0.0266 0.0266 0.0266 0.0266 0.0266 0.0266 0.0265 0.0265
Enthalpy; (kJ/kg) 1 0.0000 -0.1928 -0.3855 -0.5783 -0.7711 -0.9639 -1.1566 -1.3494 -1.5422 -1.7349
Specific heat; (kJ/kg-C) 1 1.0057 1.0056 1.0056 1.0056 1.0056 1.0056 1.0056 1.0056 1.0056 1.0056
 Properties Profile Monitor Page 18

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Physical Properties Profile: Cold Outside
Reference pressure; (kPa) (P1= 101.334)
(P) 11 12 13 14 15 16 17 18 19 20
Temperature; (C) 1 29.64 29.45 29.26 29.07 28.87 28.68 28.49 28.30 28.11 27.92
Heat duty/flow rate; (kJ/kg) 1 3.6622 3.4694 3.2767 3.0839 2.8912 2.6984 2.5056 2.3129 2.1201 1.9274
Weight fraction vapor 1 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
Vapor Properties
Density; (kg/m3) 1 1.1659 1.1666 1.1674 1.1681 1.1688 1.1696 1.1703 1.1711 1.1718 1.1726
Viscosity; (mN-s/m2) 1 0.0186 0.0186 0.0186 0.0185 0.0185 0.0185 0.0185 0.0185 0.0185 0.0185
Thermal conductivity; (W/m-C) 1 0.0265 0.0265 0.0265 0.0265 0.0265 0.0264 0.0264 0.0264 0.0264 0.0264
Enthalpy; (kJ/kg) 1 -1.9277 -2.1204 -2.3132 -2.5060 -2.6987 -2.8915 -3.0842 -3.2770 -3.4697 -3.6625
Specific heat; (kJ/kg-C) 1 1.0056 1.0056 1.0056 1.0056 1.0055 1.0055 1.0055 1.0055 1.0055 1.0055
 Properties Profile Monitor Page 19

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Physical Properties Profile: Cold Outside
Reference pressure; (kPa) (P1= 101.334)
(P) 21 22 23 24 25 26 27 28 29 30
Temperature; (C) 1 27.73 27.53 27.34 27.15 26.96 26.77 26.58 26.38 26.19 26.00
Heat duty/flow rate; (kJ/kg) 1 1.7347 1.5419 1.3492 1.1564 0.9637 0.7709 0.5782 0.3855 0.1927 0.0000
Weight fraction vapor 1 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
Vapor Properties
Density; (kg/m3) 1 1.1733 1.1740 1.1748 1.1755 1.1763 1.1770 1.1778 1.1786 1.1793 1.1801
Viscosity; (mN-s/m2) 1 0.0185 0.0185 0.0185 0.0185 0.0184 0.0184 0.0184 0.0184 0.0184 0.0184
Thermal conductivity; (W/m-C) 1 0.0264 0.0264 0.0263 0.0263 0.0263 0.0263 0.0263 0.0263 0.0263 0.0262
Enthalpy; (kJ/kg) 1 -3.8552 -4.0480 -4.2407 -4.4334 -4.6262 -4.8189 -5.0117 -5.2044 -5.3971 -5.5899
Specific heat; (kJ/kg-C) 1 1.0055 1.0055 1.0055 1.0055 1.0055 1.0055 1.0055 1.0055 1.0054 1.0054
 Stream Properties Page 20

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Hot Tubeside Fluid Inlet Outlet
Fluid name Agua Desmineralizada
Temperature (C) 70.00 30.00
Pressure (kPa) 548.719 548.679
Weight fraction vapor (--) 0.0000 0.0000
Vapor Properties
Density (kg/m3) -- --
Viscosity (mN-s/m2) -- --
Conductivity (W/m-C) -- --
Heat capacity (kJ/kg-C) -- --
Molecular weight (--) -- --
Liquid Properties
Density (kg/m3) 976.360 1003.67
Viscosity (mN-s/m2) 973.361 1003.67
Conductivity (W/m-C) 0.6618 0.6184
Heat capacity (kJ/kg-C) 4.2001 4.2231
Molecular weight (--) 0 0
Latent heat (kJ/kg) -- --
Surface tension (mN/m) 0.0000 0.0000
Molar Composition Vapor Liquid K-Value Vapor Liquid K-Value
1 Agua Desmineralizada -- -- -- -- -- --
 Stream Properties Page 21

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Cold Outside Fluid Inlet Outlet
Fluid name
Temperature (C) 26.00 26.03
Pressure (kPa) 101.334 101.287
Weight fraction vapor (--) 1.0000 1.0000
Vapor Properties
Density (kg/m3) 1.1801 1.1800
Viscosity (mN-s/m2) 0.0184 0.0184
Conductivity (W/m-C) 0.0263 0.0263
Heat capacity (kJ/kg-C) 1.0054 1.0054
Molecular weight (--) 28.96 28.96
Liquid Properties
Density (kg/m3) -- --
Viscosity (mN-s/m2) -- --
Conductivity (W/m-C) -- --
Heat capacity (kJ/kg-C) -- --
Molecular weight (--) -- --
Latent heat (kJ/kg) -- --
Surface tension (mN/m) -- --
Molar Composition Vapor Liquid K-Value Vapor Liquid K-Value
 Input Reprint Page 22

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow CONSULTAR A QUE
HACE REFERENCIA
Unit Data
Run mode Design
Unit type Air-cooled heat exchanger
Hot fluid location Tubeside
Tube bundle angle (relative to horizontal) 0.00 deg
Tubeside flow type Countercurrent to crossflow
Number of bays in parallel per unit 1 CUAL ES LA
Number of bundles in parallel per bay 1 DIFERENCIA ENTRE
Number of services 1 AMBOS
Number of tubepasses per bundle 2
Tubeside nozzle distribution Radial
Tubeside nozzle distribution Perpendicular
Tubeside nozzle impingement device None
Number of inlet nozzles per bundle 1
Inlet inside diameter 25.400 mm Ver nota 1.
Number of outlet nozzles per bundle 1
Outlet inside diameter 25.400 mm La eficiencia indicada
por Repsol ED-E-04.00
Fans Data es de al menos 80%,
favor aclarar si el valor
Number of fans per bay 1
considerado se debe a
Fan arrangement Forced draft
un sobrediseño
Fan diameter 1.200 m
utilizado solo para fines
Total combined fan and drive efficiency 65 %
de cálculo.
Fan manufacturer Unspecified
Fan ring type (inlet) 30 Degree Cone
Ver nota 1.
Optional Data
Steam coil present No
Louvers present No
Header box depth 101.600 mm Ver nota 1.
Plenum chamber type Box Ver nota 1.
Number of intermediate tube supports Program set
Ver nota 1.
Use stream analysis No
Que significa?
Bundle Data
Number of tubepasses 2
Number of tuberows 2
Number of tubes in odd numbered row 33
Number of tubes in even numbered row 33
Tube layout Staggered
Tube form Straight
Ver nota 1.
Clearance, wall to first tube 9.525 mm
Bypass seal half tubes Yes Que significa?
Default bundle type Rows
Tube length 1.400 m
 Input Reprint Page 23

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Tubes Data
TubeType1 Data
Tube type Plain
Tube material 316 Stainless steel (17 Cr, 12 Ni)
Tube material thermal conductivity 0.0066 W/m-C
Tube outside diameter 25.400 mm
Tube wall thickness 1.651 mm
Tube longitudinal pitch 57.150 mm
Tube pitch 57.150 mm

Process Conditions Data Tubeside (Hot) Airside

Flow measure Sensible liquid Mass flow rate
Mass flow rate 0.2830 16.3339 kg/s Como se llega al flujo?
Inlet vapor fraction 0
Outlet vapor fraction 0
Inlet temperature 70.00 26.00 C Verificar valor de altitud
Outlet temperature 30.00 -- C utilizado en el cálculo.
Inlet pressure 548.711 kPa ¿Es este el valor mas
Altitude 0.000 m conservador?
Allowable pressure drop 25.007 kPa
Fouling resistance 8.598e-4 -- m2-K/W Verificar dato o indicar
Exchanger duty 0.0467 MegaWatts fuente.
Duty multiplier 1
¿Esto no debería ser
calculado por el
Hot Fluid Property Data software?
Fluid name Agua Desmineralizada
Physical property method Component by component properties
Heat release method User specified via TP grid
Flash type Integral Favor explicar los datos
Quantity units Weight ingresados en esta
Temperature interpolation option Program sección.
Heat release type Specific enthalpy
Number of components 1
Property package HTRI

Hot Fluid Component Data

Component number 1
Component name Agua Desmineralizada
Comp. bank name <User-Defined>
Component bank HTRI
Component code -1
Component phase Liquid
Liquid Properties
Reference temperature, C 70.00 30.00 Confirmar el valor indicado como
Density, kg/m3 976.360 1003.67 viscocidad.
Viscosity, mN-s/m2 973.360 1003.67
Thermal conductivity, W/m-C 0.6616 0.6182
Heat capacity, kJ/kg-C 4.2000 4.2230
 Input Reprint Page 24

SI Units

Design-Horizontal air-cooled heat exchanger forced draft countercurrent to crossflow

Design Geometry Data
Run mode Design

Design Constraints Data Airside Fluid

Control Methods Data

Shellside friction factor method Commercial
Tubeside friction factor method Commercial
Pure component condensation No
Condensing correlation HTRI Proration
Mole fraction inerts 0
Momentum exclusion 0 %
Pure component boiling No
Check film boiling Yes Favor explicar los datos
Nucleate boiling method Physical property/theoretical boiling range ingresados en esta
Component boiling method Nucleate and convective sección.
High-fin heat transfer method HTRI
High-fin pressure drop method HTRI
Single increment method No
Force phase separation in tube headers No

NOTA:
1. Emitir planos y maqueta en 3D actualizados donde se representen características geométricas del
equipo correspondientes de este cálculo.
 Input Reprint Page 25

Diseño de haz de tubos

Vista 2D de aeroenfriador

EN EL MODELO PRESENTANDO EN LA MAQUETA EN

3D, NO LLEVA EL PLENUM INDICADO EN LA IMAGEN
PROPUESTA DEL CÁLCULO TÉRMICO.
Vista 3D de aeroenfriador