Energy Analysis of Control Volumes at Steady

Chapter 4, Problem 80P

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A feedwater heater in a vapor power plant operates at steady state with liquid entering at inlet 1 with \(T_1=45^{\circ} \mathrm{C}\) and \(p_1=3.0\) bar. Water vapor at \(T_2=320^{\circ} \mathrm{C}\) and \(p_2=3.0 \mathrm{bar}\) enters at inlet 2. Saturated liquid water exits with a pressure of \(p_3=3.0\) bar. Ignore heat transfer with the surroundings and all kinetic and potential energy effects. If the mass flow rate of the liquid entering at inlet 1 is \(\dot{m}_1=3.2 \times 10^5 \mathrm{~kg} / \mathrm{h}\), determine the mass flow rate at inlet \(2, \dot{m}_2\), in \(\mathrm{kg} / \mathrm{h}\).

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