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In: Mechanical Engineering

Refrigerant 134a is the working fluid in a vapor-compression heat pump system with a heating capacity...

Refrigerant 134a is the working fluid in a vapor-compression heat pump system with a heating capacity of 60,000 Btu/h. The condenser operates at 180 lbf/in.2, and the evaporator temperature is 0°F. The refrigerant is a saturated vapor at the evaporator exit and a liquid at 110°F at the condenser exit. Pressure drops in the flows through the evaporator and condenser are negligible. The compression process is adiabatic, and the temperature at the compressor exit is 180°F. Determine

(a) the mass flow rate of refrigerant, in lb/min
(b) the compressor power input, in horsepower
(c) the isentropic compressor efficiency
(d) the coefficient of performance


Round answers to 3 significant digits.

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Expert Solution

samet mamat answered 1 year ago
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