Question: Refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at 120 kPa with a quality of 20

Refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at 120 kPa with a quality of 20 percent and leaves at 120 kPa and 20°C. If the compressor consumes 450 W of power and the COP the refrigerator is 1.2, determine
(a) The mass flow rate of the refrigerant and
(b) The rate of heat rejected to the kitchen air.

Refrigerant-134a enters the evaporator

QH Condenser Expansion Compressor E- valve in Evaporator 120 kPa x= 0.2 120 kPa -20C er

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