A refrigerant 22, four cylinder, 85 x 70-mm, compressor operating at 28 rev/s, a condensing temperature of 38 degrees Celsius, and an evaporating temperature of -2 degrees Celsius carries a refrigerating load of 112 kW. The motor driving the compressor has an efficiency of 92 percent and draws 32.5 kW. There is a 5 degrees Celsius sub-cooling and 7 degrees Celsius superheating of the suction gas entering the compressor. Compute (a) the actual volumetric efficiency and (b) the compression efficiency
