Question: A refrigerator uses refrigerant-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. The refrigerant enters the

A refrigerator uses refrigerant-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. The refrigerant enters the evaporator at 120 kPa with a quality of 34 percent and leaves the compressor at 70oC. If the compressor consumes 450 W of power, determine
(a) The mass flow rate of the refrigerant.
(b) The condenser pressure.
(c) The COP of the refrigerator.

Warm Q environment 70C Condenser Expansion in valve Evaporator Compressor 120 kPa x = 0.34 Cold environment

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