An air conditioner using refrigerant 134a as work fluid It is used to keep the temperature of a room at 23 ° C by giving heat to the environment. The house from the walls and heat gain from windows is 250 kJ / min ; 900 W of heat from computer, TV and lamps to the room spreads. The refrigerant is 100 L / min in the form of saturated vapor at 400 kPa pressure to the compressor entering with flow and it left from the compressor 1200 kPa pressure and 70 ° C. a) real COP value b) max COP value c) Calculate the min volumetric flow rate for the refrigerant can have for the same compressor inlet and outlet conditions

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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An air conditioner using refrigerant 134a as work fluid It is used to keep the temperature of a room at 23 ° C by giving heat to the environment. The house from the walls and heat gain from windows is 250 kJ / min ; 900 W of heat from computer, TV and lamps to the room spreads. The refrigerant is 100 L / min in the form of saturated vapor at 400 kPa pressure to the compressor entering with flow and it left from the compressor 1200 kPa pressure and 70 ° C.

a) real COP value

b) max COP value

c) Calculate the min volumetric flow rate for the refrigerant can have for the same compressor inlet and outlet conditions

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