A refrigerator uses a R-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.7 MPa. The mass flow rate of the refrigerant is 0.05 kg/s.
H2 =273.54 kj/kg
Determine:
a. the rate of heart removal, Q_c, from the refrigerated space and the power input to the compressor
b. the rate of heat rejection to the environment, Q_H and
c. the coefficient of performance, COP.