Question: Air at 1(aim) and 35C is compressed in a staged reciprocating compressor (with inter cooling) to a final pressure of 50(atm). For each stage, the

Air at 1(aim) and 35°C is compressed in a staged reciprocating compressor (with inter cooling) to a final pressure of 50(atm). For each stage, the inlet gas temperature is 35oC and the maximum allowable outlet temperature is 200oG. Mechanical power is the same for all stages, and isentropic efficiency is 65% for each stage. The volumetric flow rate of air is 0.5 m3 s-1 at the inlet to the first stage.
(а) How many stages are required?
(b) What is the mechanical-power requirement per stage?
(c) What is the heat duty for each intercooler?
(d) Water i$ the coolant for the intercoolers. It enters at 25oC and leaves at 45oC, What is the cooling-water rare per intercooler?
Assume air is an ideal gas with Cp = (7/2) R?.

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P 1 1atm T 1 35 27315K T 1 30815K P 2 50atm T 2 200 27315K T 2 47315K With compression from the same ... View full answer

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