Engineering Board Exam Reviewer · Thermodynamics · easy

Intercooling between stages of a multistage air compressor:

1. Reduces the total compression work
2. Increases the total compression work
3. Increases the discharge temperature
4. Has no effect on the compression work

Answer

A. Reduces the total compression work

Solution

Cooling the air between stages brings compression closer to isothermal, which requires the least work.

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