Engineering, 21.07.2020 14:01 10040813

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and 258C at a rate of 0.07 kg/s, and it leaves at 1.2 MPa and 708C. The refrigerant is cooled in the condenser to 448C and 1.15 MPa, and it is throttled to 0.21 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor, (b) the isentropic efficiency of the compressor, and (c) the COP of the refrigerator.

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Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and 258C a...

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