Refrigerant Gas (r-134) at 500k and 70 degrees C enters an air-cooled condenser (heat exchanger) and leaves the condenser as saturated liquid at 500 kPa. The cooling enters the heat the heat exchanger at 100 kPa and 18 Degrees C with a volumetric flow of 450 (m^3/min.). after the heat exchange , the warm air leaves the condenser at 110 kPA and 65 degrees C. Using an average value of 1.005 kJ/kg.K as the specific heat at constant pressure of air, calculate the
A) Amount of heat lost by the refrigerant gas in the condenser
B) Mass flow rate of refrigerant gas