Refrigerant-134a enters the condenser of a residentialheat pump at 800 kPa and 50C at a rate of 0.022 kg/s and leavesat 750 kPa subcooled by 3C. The refrigerant enters the compressorat 200 kPa superheated by 4C. Determine (a) the isentropicefficiency of the compressor, (b) the rate of heat supplied to theheated room, and (c) the COP of the heat pump. Also, determine(d ) the COP and the rate of heat supplied to the heated roomif this heat pump operated on the ideal vapor- compression cyclebetween the pressure limits of 200 and 800 kPa.

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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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Refrigerant-134a enters the condenser of a residential
heat pump at 800 kPa and 50C at a rate of 0.022 kg/s and leaves
at 750 kPa subcooled by 3C. The refrigerant enters the compressor
at 200 kPa superheated by 4C. Determine (a) the isentropic
efficiency of the compressor, (b) the rate of heat supplied to the
heated room, and (c) the COP of the heat pump. Also, determine
(d ) the COP and the rate of heat supplied to the heated room
if this heat pump operated on the ideal vapor- compression cycle
between the pressure limits of 200 and 800 kPa.

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