A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.8 MPa. The mass flow rate of the refrigerant is 0.05 kg/s. Show the cycle on a T-s diagram with respect to saturation lines and determine the following:
(a) rate of heat removal from the refrigerated space and the power input to the compressor.
(b) rate of heat rejection to the environment, in kW.
(c) coefficient of performance (COP) of the refrigerator.