ake a look at the back of a fridge or AC unit. You will see a 'radiator' that is used to remove heat from the R134a fluid that circulates within the refrigeration system. Using this heat exchanger, the refrigerant-134a at 1 MPa and 90oC is to be cooled to 1 MPa and 30oC by air. The air enters at 100 kPa and 27oC with a volume flow rate of 600 m3/min and leaves at 95 kPa and 60oC. Determine the mass flow rate of the refrigerant.[20]
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