The events of the Frick, split -stage , low temperature refrigerating cycle are as follows : A Freon-12 vapor compression system operates between O deg F and 90 deg F with saturated liquid on the high side of the expansion valve and saturated vapor entering the compressor whose volumetric efficiency is 88% . An NH3 compression operates between -63.11 deg F and 11.66 deg F with saturated liquid entering the expansion valve and saturated vapor entering the compressor whose volumetric efficiency is 85% .The Freon -12 evaporator serves as the condenser for the NH3 . For the ideal cycle and 1 ton of refrigeration , find the total horsepower required for compression efficiencies of 85% .
The events of the Frick, split -stage , low temperature refrigerating cycle are as follows : A
Freon-12 vapor compression system operates between O deg F and 90 deg F with saturated
liquid on the high side of the expansion valve and saturated vapor entering the compressor
whose volumetric efficiency is 88% . An NH3 compression operates between -63.11 deg F and
11.66 deg F with saturated liquid entering the expansion valve and saturated vapor entering
the compressor whose volumetric efficiency is 85% .The Freon -12 evaporator serves as the
condenser for the NH3 . For the ideal cycle and 1 ton of refrigeration , find the total
horsepower required for compression efficiencies of 85% .
A) 2.187
B) 2.96
C) 3.96
D) 1.6
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