Ideal Vapor Compression Refrig example PDF

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The Ideal Vapor-compression Refrigeration Cycle: Example A refrigerator operates steadily on the ideal vaporcompression refrigeration cycle with refrigerant-134a as the working fluid. The mass flow rate of the refrigerant is 0.05 kg/s. The refrigerant absorbs heat from a space at -10°C and rejects heat to ambient air at 30°C. For each state, the required properties are given in the table below. Determine: (a)the power input to the compressor; (b)the cooling load (i.e. the heat transfer rate from the refrigerated space); (c)the COP of the refrigerator; (d)the entropy generation rate of the refrigerator; (e)if the refrigerator violates the second law of thermodynamics. Explain. State

h(kJ/kg)

1

239.16

2

275.39

3

95.47

4

95.47 9

10

11

12...