A refrigerator uses refrigerant-134a as the working fluid and operates on the vapor-
compression refrigeration cycle. The evaporator and condenser pressures are 200 kPa and 1400
kPa, respectively. The refrigerant enters the compressor at a rate of 0.025 kg/s. (a) If the cycle is
operated on the ideal vapor-compression retrigeration cycle, determine the rate of cooling
provided by the evaporator, the power input, and the COP. (b) For the same pressure limits, if the
isentropic efficiency of the compressor is 88 percent, and the refrigerant enters the compressor at
0°C and leaves the condenser at 48°C, determine the rate of cooling provided by the evaporator,
the power input, and the COP.
- A Refrigerator Uses Refrigerant 134a As The Working Fluid And Operates On The Vapor Compression Refrigeration Cycle Th 1 (22.65 KiB) Viewed 17 times
1. (35 %) A refrigerator uses refrigerant-134a as the working fluid and operates on the vapor- compression refrigeration cycle. The evaporator and condenser pressures are 200 kPa and 1400 kPa, respectively. The refrigerant enters the compressor at a rate of 0.025 kg/s. (a) If the cycle is operated on the ideal vapor-compression refrigeration cycle, determine the rate of cooling provided by the evaporator, the power input, and the COP. (b) For the same pressure limits, if the isentropic efficiency of the compressor is 88 percent, and the refrigerant enters the compressor at 0°C and leaves the condenser at 48°C, determine the rate of cooling provided by the evaporator, the power input, and the COP.