A Carnot vapor refrigeration cycle is used to maintain a cold region at 0°F where the ambient temperature is 75 °F. Refrigerant R-134a enters the condenser as saturated vapor at 100 psi and leaves as saturated liquid at the same pressure. The evaporator pressure is 20 psi. The mass flow rate of refrigerant is 12 lbm/s. Calculate (a) the compressor work Btu/min (b) turbine power, in Btu/min and (b) the coefficient of performance.

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