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Consider the vapor-compression refrigeration cycle with HFC-134a as refrigerant. If the evaporation temperature is -8 °C,...

Consider the vapor-compression refrigeration cycle with HFC-134a as refrigerant. If the evaporation temperature is -8 °C, show the effect of condensation temperature on the coefficient of performance by making calculations for condensation temperatures of 30 °C and 25 °C. (a) Assume isentropic compression of the vapor. (b) Assume compressor efficiency of 85%.

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Answer #1

Given Problem is based on vapour compression refrigeration cycle.

Coefficient of performance of refrigeration cycle is depends on evaporating and condensing temprature.

thus COP at T= 25 degree celcius is higher than COP at T= 30 Degree Celcius.

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