Applying the Exergy Balance: Closed Systems
Liquid water at 20 lbf/in.2, 50oF enters a mixing chamber operating at steady state with a mass flow rate of 5 lb/s and mixes with a separate stream of steam entering at 20 lbf/in.2, 250oF with a mass flow rate of 0.38 lb/s. A single mixed stream exits at 20 lbf/in.2, 130oF. Heat transfer from the mixing chamber occurs to its surroundings. Neglect the effects of motion and gravity and let T0 = 70oF, p0 = 1 atm. Determine the rate of exergy destruction, in Btu/s, for a control volume including the mixing chamber and enough of its immediate surroundings that heat transfer occurs at 70oF.
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