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8. A single-acting reciprocating air compressor has a clearance volume
of 10%. Air is received at 90 KPa and 29.3 °C and is discharged at 600
Kpa. The compression and expansion are polytrophic with n = 1.28. The
pressure drop is 5 Kpa at the suction port and 10 KPa at the discharged
port. The compressor piston displacement is 500 cm3 when operating at
900 rpm. Determine the mass of compressed air in kg/hr.

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