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Condenser Design

This document provides specifications for an air cooled condenser, including: - The condenser load is 4.7 kW (1.3 TR) and requires a heat transfer area of 0.7025007 sq. m. - The condenser uses 125.5 tubes that are 8.006 mm in diameter arranged over 8 passes in 15.68 rows. - Each tube is 0.666666667 feet in length for a total tube length of 25.50323848 meters. - The fins are 0.2 mm thick, 4.765 mm high, spaced 2.5 mm apart, with 394 fins per meter along each tube.

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Naqqash Sajid
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495 views1 page

Condenser Design

This document provides specifications for an air cooled condenser, including: - The condenser load is 4.7 kW (1.3 TR) and requires a heat transfer area of 0.7025007 sq. m. - The condenser uses 125.5 tubes that are 8.006 mm in diameter arranged over 8 passes in 15.68 rows. - Each tube is 0.666666667 feet in length for a total tube length of 25.50323848 meters. - The fins are 0.2 mm thick, 4.765 mm high, spaced 2.5 mm apart, with 394 fins per meter along each tube.

Uploaded by

Naqqash Sajid
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Sheet1

Air cooled Condenser:

Condenser load: Design Conditions

Refrigerant flow rate 38.92 kg/hr


Volumetric flow rate inlet conditon 0.142564103 m3/hr
Volumetric flow rate outlet conditon 0.377095243 m3/hr
Condenser load evaporator load + Compressor shaft power inlet air temperature(WB) 26 degree C
evaporator load 1.6 kW condensing temperature 37 degree C
Compressor shaft power 0.606 kW
Condenser load 2.206 kW Inlet Air Conditions
ten percent margin 2.4266 kW Assume conditions:
Correction factor 1.93 inlet air temperature(WB) 26 degree C
Net Load 4.7 kW Relative humidity 60 %
Net Load 1.3 TR Other properties found:
Dry bulb temperature 35 degree C
Heat transfer area 0.15 sq. m/kW Dew-point temperature 23 degree C
0.7025007 sq. m Humidity ratio 0.025 kg moisture/kg dry air
Specific volume of moist air 0.926 m3/ kg dry air
Volumetric flow rate of air 0.05 cub.m/skW Specific enthalpy of moist air 101 KJ/Kg dry air
0.2341669 cub.m/s Density 1.12 Kg/m3
843.00084 cub.m/hr
496.1902944 cfm Outlet Air Conditions
Dry bulb temperature 40 degree C
Outside dia of one tube 9.53 mm Relative humidity 73 %
Thickness 0.762 mm Other properties found:
Nominal tube size 8.006 mm Wet bulb temperature 35.2 degree C
Outside area per unit length 0.029939448 m2/m Dew-point temperature 34.2 degree C
Inside area per unit length 0.02515165 m2/m Humidity ratio 0.0385 kg moisture/kg dry air
Mean area per unit pipe length 0.027545549 m2/m Specific volume of moist air 0.942 m3/ kg dry air
Pitch 16.6775 mm Specific enthalpy of moist air 137 KJ/Kg dry air
total length of pipe required 25.50323848 m Density 1.1 Kg/m3
84 ft

Each tube length 0.666666667 feet


Total no of tubes 125.5
No of passes 8
No of rows 15.68449166

Fins
thickness of one fin 0.2 mm
height of one fin 4.765 mm
fin spacing 2.5 mm
no. of fins per meter 394
Total dia of pipe with fin 19.06 mm
0.01906 m

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