Analyzing Internally Reversible ProcessesFigure P6.35

Chapter 6, Problem 35P

(choose chapter or problem)

Figure P6.35 shows a Carnot heat pump cycle operating at steady state with ammonia as the working fluid. The condenser temperature is \(120^{\circ} \mathrm{F}\), with saturated vapor entering and saturated liquid exiting. The evaporator temperature is \(10^{\circ} \mathrm{F}\).

(a) Determine the heat transfer and work for each process, in Btu per lb of ammonia flowing.

(b) Evaluate the coefficient of performance for the heat pump.

(c) Evaluate the coefficient of performance for a Carnot refrigeration cycle operating as shown in the figure.

                           

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