A commercial refrigerator using R-134a as a refrigerant is used to keep the cooled environment at -35 ° C. The refrigerator gives the waste heat to the cooling water, which enters the condenser at a...

Thermodynamics

Extracted text: A commercial refrigerator using R-134a as a refrigerant is used to keep the cooled environment at -35 ° C. The refrigerator gives the waste heat to the cooling water, which enters the condenser at a flow rate of 0.25 kg / s at 18° C and leaves the condenser at 26° C. The refrigerant enters the condenser at a pressure of 1.2 MPa and a temperature of 50°c, and exits the condenser at the same pressure and supercooled at 5 .C. Since the compressor consumes 3.3 kw of power, a)mass flow of refrigerant, b)cooling load and COP value c)Calculate the minimum power consumed by the compressor for the same cooling load.