A vapor-compression refrigeration system operates on the cycle of Fig. 9,1. The refrigerant is water, Given that the evaporation t = 4°C. the condensation t = 34°C, η(compressors 0.76, and the refrigeration rate = 1.200 kJ s-1, determine the circulation rate of the refrigerant, the heat-transfer rate in the condenser, the power requirement, the coefficient of performance of the cycle, and the coefficient of performance of a Carnot refrigeration cycle operating between the same temperature levels.