216. An ammonia simple saturation cycle operates with a suction pressure of 291.6 kPa and a

condenser pressure of 1204 kPa develops 15 tons of refrigeration. Determine the theoretical

horsepower of the compressor. The following enthalpies have been found: condenser entrance

\= 1653 kJ/kg, exit = 346.6 kJ/kg; compressor entrance = 1450.2 kJ/kg, exit = 1653 kJ/kg.

A. 7.23 hp B. 13 hp C. 15 hp D. 8.23 hp