A refrigerator uses refrigerant-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle. The refrigerant enters the evaporator at 120 kPa with a quality of 30 percent and leaves the compressor at 60°C. If the compressor consumes 450 W of power, determine
(a) The mass flow rate of the refrigerant,
(b) The condenser pressure, and
(c) The COP of the refrigerator.

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60°C Condenser Expansion valve Compressor! Evaporator 0 120 kPa x=0.3