Question

Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a compressor operating at steady state and exits at 3 bar. During the compressing from inlet to exit, the air experiences a polytropic process as PV^n=constant. m=6, n=1.48.

(1) Determine the power required by the compressor.

(2) Determine the heat transfer between the compressor and the
surrounding.

(s) Determine the rate of exergy destruction. Kinetic and potential
energy effects are negligible. Let T_0 = 300 K ºC, P_0 = 1
bar.

(Please treat the air as ideal gas with cp=1.001 kJ/kg?K and
cv=0.714 kJ/kg?K)

Answer #1

Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a
compressor operating at steady state and exits at 3 bar. During the
compressing from inlet to exit, the air experiences a polytropic
process as PV^n=constant. m=6, n=1.48
(1) Determine the power required by the compressor.
(2) Determine the heat transfer between the compressor and the
surrounding.
(s) Determine the rate of exergy destruction. Kinetic and potential
energy effects are negligible. Let T_0 = 300...

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