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 70°C. 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.

Transcribed Image Text:

Warm environment (2) 70°C Condenser Expansion in valve Evaporator Compressor 120 kPa x = 0.34 Cold environment (3)