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Engineering, 28.09.2019 01:10 Frankie103947

Liquid water enters a heat exchanger operating at steady state at t1 = 60°f, p1 = 1 atm and exits at t2 = 160°f with a negligible change in pressure. in a separate stream, steam enters at t3 = 20 lbf/in^2, x^3 = 92% and exits at t = 140°f, p4 = 18 ibf/in^2. stray heat transfer and the effects of motion and gravity are negligible. let to = 60°f, po = 1 atm. determine (a) the ratio of the mass flow rates of the two streams and (b) the rate of exergy destruction, in btu per lb. of steam entering the heat exchanger.

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