A Carnot vapor refrigeration cycle is used to maintain a cold region at 0oF where the ambient

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A Carnot vapor refrigeration cycle is used to maintain a cold region at 0oF where the ambient temperature is 75oF. Refrigerant R-134a enters the condenser as saturated vapor at 100 lbf/in2 and leaves as saturated liquid at the same pressure. The evaporator pressure is 20 lbf/in2. The mass flow rate of refrigerant is 12 lbm/s. Calculate
(a) The compressor and turbine power, in Btu/min and
(b) The coefficient of performance.
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