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Question 6.CSGP.57: A compressor in an air-conditioner receives saturated vapor ......

A compressor in an air-conditioner receives saturated vapor R-410a at 400 kPa and brings it to 1.8 MPa, 60°C in an adiabatic compression. Find the flow rate for a compressor work of 2 kW?

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C.V. Compressor. Assume adiabatic and neglect kinetic energies.

Energy Eq.6.13:        w = h _1- h _2

States: 1: B.4.2        h _1=271.9 \,kJ / kg

2: B.4.2      h _2=323.92 \,kJ / kg

– w _{ C }= h _2- h _1=323.92-271.9=52.02 \,kJ / kg

\dot{ W }=\dot{ m }\,w _{ C } \Rightarrow \dot{ m }=\dot{ W } / w _{ C }=2 \,kW / 52.02\, kJ / kg =0.038\,kg / s

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