3. A vapor-compression refrigeration cycle operates with 10C saturated vapor leaving the evaporator, a pressure ratio of 2 across the compressor, and a cooling capacity of 2.5 tons.If the working fluid is ammonia and the compressor has an isentropic conversion efficiency of 100% then find the following a)(10 points Find the coefficient of performance of the cycle,. b)5 points Find the power required to drive the compressor in (kW