11-22 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. Answers:
a) 0.00727 kg/s,
b) 672 kPa,
c) 2.43 Selecting the Right Refrigerant
 
 
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