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Consider an air-cooled condenser in which a stream of R-134a enters at 12 bar and 60degC,...

Consider an air-cooled condenser in which a stream of R-134a enters at 12 bar and 60degC, and leaves as a saturated liquid at 12 bar, and air enters as a separate stream at 1 bar, 35degC and leaves at 1 bar, 45degC. The two streams do not mix but heat transfer from one stream to the other stream occurs at the rate of 6.94 kW.

Determine

(a) the mass flow rates for the R-134a and the air (kg/s), and

(b) the entropy generation rate in the condenser (kW/K).

Engineering   Mechanical-Engineering   
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