Water at 40 C is pumped from an open tank through 200 m of

Chapter 12, Problem 12.22

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Water at \(40~^\circ \mathrm{C}\) is pumped from an open tank through 200 m of 50-mm-diameter smooth horizontal pipe as shown in Fig. P12.22 and discharges into the atmosphere with a velocity of 3 m/s. Minor losses are negligible. (a) If the efficiency of the pump is 70%, how much power is being supplied to the pump? (b) What is the \(\mathrm{NPSH_A}\) at the pump inlet? Neglect losses in the short section of pipe connecting the pump to the tank. Assume standard atmospheric pressure.

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