=+v15-2 cycle. The condensing temperature is 48 C, and the evaporating temperature is -18 C. The power input to the cycle is 2.5 kW, and the mass flow rate of refrigerant is 0.05 kg/s. Deter-

mine

(a) the heat rejected from the condenser,

(b) the coefficient of performance,

(c) the enthalpy at the compressor exit, and

(d) the refrigerating efficiency, An R-134a system is arranged as shown in Fig. 15-34, Compression is isentropic. Assume fric-