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A centrifugal compressor must compress a perfect gas with a molecular weight of 44. The perfect gas is compressed from 101.3 kPa, 27C to a

A centrifugal compressor must compress a perfect gas with a molecular weight of 44. The perfect gas is compressed from 101.3 kPa, 27C to a pressure of 680 kPa following the law PV1.2 = constant. Take the specific heat at constant pressure of the gas as 0.846 kJ/kg.K. Find the heat transfer and its direction.

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