Evaluate the performance of an ideal, single-stage, vapor compression refrigeration cycle using refrigerant R-134a and operating...

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Evaluate the performance of an ideal, single-stage, vapor compression refrigeration cycle using refrigerant R-134a and operating with an evaporating temperature of 20F and a condensing temperature of 100F. Assume 1 ton of refrigeration occurring in the evaporator. a. Draw the cycle on an R-134a P-h diagram. Label point 1 as exit of evaporator, point 2 as exit of compressor, point 3 as exit of condenser, and point 4 as exit of expansion valve. b. In a table, clearly provide the temperature (F), pressure (psia), specific enthalpy (BTU/lb) and phase at each of the four points. C. Determine the mass flow (lb/hr) of refrigerant. d. Determine the heat of compression (compressor work) (BTU/hr). Determine the heat rejection in the condenser (BTU/hr). Determine the COP. g. Determine the refrigerating efficiency. e. f. Repeat Problem 1 but with 10F of superheat leaving the evaporator. The evaporating temperature stays at 20F and the condensing temperature stays at 100F. Assume superheating occurs outside of the refrigerated space. Assume no subcooling in the condenser. Assume isentropic efficiency assumption remains. Compare answers c-g with Problem 1 and comment on the impact of superheating on the system performance. Evaluate the performance of an ideal, single-stage, vapor compression refrigeration cycle using refrigerant R-134a and operating with an evaporating temperature of 20F and a condensing temperature of 100F. Assume 1 ton of refrigeration occurring in the evaporator. a. Draw the cycle on an R-134a P-h diagram. Label point 1 as exit of evaporator, point 2 as exit of compressor, point 3 as exit of condenser, and point 4 as exit of expansion valve. b. In a table, clearly provide the temperature (F), pressure (psia), specific enthalpy (BTU/lb) and phase at each of the four points. C. Determine the mass flow (lb/hr) of refrigerant. d. Determine the heat of compression (compressor work) (BTU/hr). Determine the heat rejection in the condenser (BTU/hr). Determine the COP. g. Determine the refrigerating efficiency. e. f. Repeat Problem 1 but with 10F of superheat leaving the evaporator. The evaporating temperature stays at 20F and the condensing temperature stays at 100F. Assume superheating occurs outside of the refrigerated space. Assume no subcooling in the condenser. Assume isentropic efficiency assumption remains. Compare answers c-g with Problem 1 and comment on the impact of superheating on the system performance.