An R12 plant has a cooling load of 10kW when the evaporator and condenser temperatures are -10°C and 30°C respectively. The vapour leaving the evaporator is at -5°C and the liquid leaving the condenser is at 25°C. Assume the compression to be isentropic. Neglecting all losses and using the P-h chart, calculate:

Elements Of Electromagnetics
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10.
An R12 plant has a cooling load of 10kW when the evaporator and
condenser temperatures are -10°C and 30°C respectively. The vapour
leaving the evaporator is at -5°C and the liquid leaving the condenser is at
25°C. Assume the compression to be isentropic. Neglecting all losses and
using the P-h chart, calculate:
(a). R12 mass flowrate
(b). coefficient of performance
(c). volumetric flowrate at the compressor suction
Transcribed Image Text:10. An R12 plant has a cooling load of 10kW when the evaporator and condenser temperatures are -10°C and 30°C respectively. The vapour leaving the evaporator is at -5°C and the liquid leaving the condenser is at 25°C. Assume the compression to be isentropic. Neglecting all losses and using the P-h chart, calculate: (a). R12 mass flowrate (b). coefficient of performance (c). volumetric flowrate at the compressor suction
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