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

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A refrigerant 22 , four-cylinder, 85 mm x 70 mm compressor operating at 28 rev/sec, condensing temp of 38OC and an evaporating temp of-2OC carries a refrigerating load of 112 kW. The motor driving the compressor has an efficiency of 92% and draws 32.5 kW. There is a 5OC subcooling and 7OC superheating of the suction gas entering the compressor. Compute (a) the actual volumetric efficiency (b) the compression efficiency.
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