At steady state, 5 kg/s of saturated water vapor atp1 = 1 bar enters a Direct Contact Heat Exchanger andmixes with 3kg/s of liquid water entering at T2 = 25°C,p2 = 1 bar. A two-phase liquid–vapor mixture exits atp3 = 1 bar. Neglect heat transfer with the surroundingsand the effects of motion and gravity. Let To = 20°C,po = 1 bar.
a) The rate of exergy destruction, in kW
.b) The exergetic efficiency given by equation: ? = (?2 (e3 – e2))/ (?1 (e1?e3))
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