solution


An ideal vapor-compression refrigeration system operates at steady state with Refrigerant 134a as the working fluid. Superheated vapor enters the compressor at 30 lbf/in.2 , 20F, and saturated liquid leaves the condenser at 140 lbf/in.2 The refrigeration capacity is 5 tons. Determine

(a) the compressor power, in horsepower.

(b) the rate of heat transfer from the working fluid passing through the condenser, in Btu/min.

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(c) the coefficient of performance.

Refrigerant 134a enters the compressor of an ideal vaporcompression refrigeration system as saturated vapor at 16C with a volumetric flow rate of 1 m3 /min. The refrigerant leaves the condenser at 36C, 10 bar. Determine

(a) the compressor power, in kW.

(b) the refrigerating capacity, in tons.

(c) the coefficient of performance.

 
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