Problem 2: The refrigerator in the diagram below uses R-134a as its working fluid and operates with $P_1 = 140$ kPa and $x_1 = 1$ at the outlet of the evaporator, and $P_3 = 800$ kPa and $x_3 = 0$ at the outlet of the condenser. Complete a thermodynamic analysis of the system assuming ideal operation of the compressor by finding (A) the pressure, temperature, enthalpy, and entropy at each state, (B) the required power into the compressor and the heat exchanged in the condenser and evaporator, and (C) the coefficient of performance of the system. Compare the coefficient of performance for the vapor compression system with that of the Carnot system where $T_H = 25$ °C and $T_L = -10$ °C.