Refrigerant R-12 enters the compressor of a refrigerator as superheated vapor at 0.14 MPa, -20oC at a

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Refrigerant R-12 enters the compressor of a refrigerator as superheated vapor at 0.14 MPa, -20oC at a rate of 0.04 kg/s, and leaves at 0.7 MPa, 50oC. The refrigerant is cooled in the condenser to 24oC, 0.65 MPa and is throttled to 0.15 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components,
(a) Show the cycle on a T-s diagram with respect to saturation lines, determine
(b) The rate of heat removal from the refrigerated space,
(c) The power input to the compressor,
(d) The COP of the refrigerator.
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