Question: In an actual refrigeration cycle using R-12 as the working fluid, the refrigerant flow rate is 0.05 kg/s. Vapor enters the compressor at 150 kPa,

In an actual refrigeration cycle using R-12 as the working fluid, the refrigerant flow rate is 0.05 kg/s. Vapor enters the compressor at 150 kPa, 10C, and leaves at 1.2 MPa, 75C. The power input to the compressor is measured and found be 2.4 kW. The refrigerant enters the expansion valve at 1.15 MPa, 40C, and leaves the evaporator at 175 kPa, 15C. Determine the entropy generation in the compression process, the refrigeration capacity and the coefficient of performance for this cycle.

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Actual ref cycle P 015 MPa P 12 MPa 1 comp inlet T 10 C T75 C P3 115 MPa P 0175 MPa c ... View full answer

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