Engineering, 22.02.2020 01:43 Nov25

Air enters the evaporator section of a window air conditioner at 100 kPa and 27 C with a volume flow rate of 6 m^3/min. Refrigerant-134a at 120 kPa with a quality of 0.3 enters the evaporator at the rate of 2 kg/min and leaves as a saturated vapor at the same pressure. Determine the exit temperature of the air and the energy destruction for this process assuming heat is transferred to the evaporator of the air conditioner from the surrounding medium at 32 C at a rate of 30 kJ/min.

Please show how to obtain the answer with all formulas and tables used, especially how to get the enthalpy of air at 100 kPa at 27 C and the enthalpy and entropy of R-134 at 120 kPa where x=.3 and x=1.

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Air enters the evaporator section of a window air conditioner at 100 kPa and 27 C with a volume flow...

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