Engineering, 13.04.2021 02:00 wellllm

A gas initially at 1.5 bar pressure, 0.15m 3

volume and 300 K was compressed

polytropically (pv 1.25 = constant) to 15 bar pressure. Determine the change

in entropy. Also work out the approximate entropy change obtained by

dividing the heat transferred by the mean absolute temperature during compression.

Take cp = 1.04 kJ / kg K and cv = 0.745 kJ / kg K.

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A gas initially at 1.5 bar pressure, 0.15m 3

volume and 300 K was compressed