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A Carnot refrigeration cycle is operating between the minimum and maximum temperatures of - 8 ° C and 20 ° C respectively. The refrigerant used in the cycle is R - 134a and the cycle is operating in the saturated liquid - vapore region. The mass of the refrigerant is 0. 8 kg and the refrigerant is saturated liquid at the end of heat rejection process. The net work input to the cycle is 15 kJ. Determine the fraction of the mass of the refrigerant that vaporizes during the heat addition process. Given hra at - 8 ° C = 204. 59 kJ / kg hg at 20 ° C = 180 - 33 kJ / kg 10. Solution please