Engineering, 05.05.2020 05:13 MathChic68

In a vapor-compression refrigeration cycle, ammonia exits the evaporator as saturated vapor at -22°C. The refrigerant enters the condenser at 16 bar and 160°C, and saturated liquid exits at 16 bar. There is no significant heat transfer between the compressor and its surroundings, and the refrigerant passes through the evaporator with a negligible change in pressure. If the refrigerating capacity is 150 kW, determine: (a) the mass flow rate of the refrigerant, in kg/s. (b) the power input to the compressor, in kW. (c) the coefficient of performance. (d) the isentropic compressor efficiency, in percent. (e) the rate of entropy production, in kW/K, for the compressor.

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In a vapor-compression refrigeration cycle, ammonia exits the evaporator as saturated vapor at -22°C...

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