Data for steady-state operation of a vapor- compression refrigeration cycle with Refrigerant 22 as the working fluid are given in the table below. The states are numbered as in the figure below. The mass flow rate of refrigerant is 8.42 lb/min. Heat transfer from the compressor to its surroundings occurs at a rate of 3.5 Btu per lb of refrigerant passing through the compressor. The condenser is water-cooled, with water entering at 65°F and leaving at 80°F with negligible change in pressure. Determine: min Aube State 1 2 www Colver 3 4 Compr Exper ww 20 be Sala sported spor h T (bt/in) (F) (Btu/b) 31.23 -10 103.5 274.7 120 124.1 2747 300 39.39 31.23 -10 39.39 (a) the refrigeration capacity, in tons. (b) the compressor power, in horsepower. (c) the mass flow rate of the condenser cooling water, in lb/min. (d) the coefficient of performance.

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