The manufacturer of an air conditioner claims a seasonal energy efficiency ratio (SEER) of 16 (Btu/h)/W for one of its units. This unit operates on the normal vapor compression refrigeration cycle and uses refrigerant-22 as the working fluid. This SEER is for the operating conditions when the evaporator saturation temperature is 25oC and the condenser saturation temperature is 45oC. Selected data for refrigerant-22 are provided in the table below.

(a) Sketch the hardware and the T-s diagram for this air conditioner.
(b) Determine the heat absorbed by the refrigerant in the evaporator per unit mass of refrigerant-22, in kJ/kg.
(c) Determine the work input to the compressor and the heat rejected in the condenser per unit mass of refrigerant-22, in kJ/kg.

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T, °С Psat, kPa hf, kJ/kg hg, kJ/kg srkJ/kg-K 5 421.2 38.76 248.1 0.9344 45 1728 101 261.9 0.8682