Question: A compressor is operating at compression ratio Rc of 3.0 (the pressure of the gas at the outlet is three times greater than the pressure

A compressor is operating at compression ratio Rc of 3.0 (the pressure of the gas at the outlet is three times greater than the pressure of the gas at the inlet). The power requirements of the compressor Hp can be determined from the equation below. Assuming that the power requirements of the compressor are exactly equal to zRT1/MW, find the polytropic efficiency n of the compressor. The parameter z is compressibility of the gas under operating conditions of the compressor, R is the gas constant, T1 is the temperature of the gas at the compressor inlet, and MW is the molecular weight of thegas.

RT, n (R-1/" - 1) MW n -

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