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Unformatted text preview: The system operates using R-134a. (a) Determine the coefficient of performance for this refrigeration system. (b) What is the isentropic efficiency (%) of the compressor? (c) Show all the processes in this refrigeration cycle on T-s diagram. SP38: An ideal vapor-compression heat pump operates between an evaporator temperature of C and condenser pressure of 9 bar. Refrigerant 134a leaves the evaporator as saturated vapor and enters the expansion valve as saturated liquid. The heat pump is used to supply 1000 kJ/min of heat to a high-temperature region. (a) What is the coefficient of performance of this heat pump cycle? (b) Determine the temperature ( C) at the exit of the compressor. (c) How much power input (kW) is required to drive the compressor?...
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- Spring '08