Draw the cycles on p-h and t-s diagrams

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Reference no: EM131090906

An R-12 vapour compression plant producing 10 tonnes of refrigeration operates with condensing and evaporating temperatures of 35ºC and -10ºC respectively. A suction line heat exchanger is used to sub-cool the saturated liquid leaving the condenser. Saturated vapour leaving the evaporator is superheated in the suction line heat exchanger to the extent that a discharge temperature of 60ºC is obtained after isentropic compression. Calculate

(i) The sub-cooling achieved in the heat exchanger

(ii) The refrigerant flow rate in kg/s

(iii) The cylinder dimensions of the two cylinder compressor, if the speed is 900 rpm, stroke-to-bore ratio is 1:1 and the volumetric efficiency is 80%.

(iv) The COP of the plant and

(v) The power required to drive the compressor in kW. Draw the cycles on P-h and T-s diagrams

Reference no: EM131090906

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