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Compressor temperature elevation


Section summary
1. Formula
2. Usual values

1. Formula

For 1 compressor stage

Calculation Temperarure Elevation in Compressor

Note : in case of multi staged compressor, if the compression ratio of each stage is unknown, it can be assumed at 1st approximation that τone stage=τ1/n

T1=Temperature entry compressor (K)
p1=Initial pressure (bar abs)

T2=Temperature outlet compressor (K)
p2=Final pressure (bar abs)

τ=p2/p1
n=number of compression stages

Cp=Specific Heat at Constant Pressure (kJ/kg.K)
Cv=Specific Heat at Constant Volume (kJ/kg.K)

2. Usual values

For air Cp/Cv=1.4


Source

Pneumatic Conveying Design Guide, David Mills, Elsevier Butterworth-Heinemann, 2004