A Freon 12 vapor compression system operating at a condenser temperature of -345°C and an evaporator temperature of 0°C develops 20 tons of refrigeration. Using the p-h diagram for Freon 12, determine:
a) The mass flow rate of the refrigerant circulated.
b) The heat rejected in the condenser.
c) The Carnot COP and the actual COP of the cycle.
A standard vapor compression cycle using Freon 22 operates on a simple saturation cycle at the following conditions:
Refrigerating capacity: 15 TR
Condensing temperature: 42°C
Evaporating temperature: -2°C.
Calculate:
a) Volume flow rate of refrigerant at compressor suction.
b) Compressor discharge temperature.