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Pls Help - Entropy production in compressors

Pls Help - Entropy production in compressors

Pls Help - Entropy production in compressors

(OP)
Typically, the exit pressure from a stage is ~ 2 times the entering pressure. A mol of hydrogen at 1 bar and 300 K is to be compressed to 300 bar and 300 K. We can cool the hydrogen to 300 K between stages using heat exchange with ambient air.

My question is How do we calculate the entropy production per mole of gas compressed in a continuous process as a function of the number of compression stages employed for the whole range, 1 stage to an infinite number of stages, using enthalpy pressure diagram.

We can assume a stage efficiency of 0.5 and ignore entropy recovery during heat exchange. Hydrogen can be assumed to be an ideal gas.

Many thanks,
Alise

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