An 18-in-diameter centrifugal pump, running at 880 r/min with water at 208C, generates

Chapter 11, Problem p11.35

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An 18-in-diameter centrifugal pump, running at 880 r/min with water at 208C, generates the following performance data: Q, gal/min 0.0 2000 4000 6000 8000 10,000 H, ft 92 89 84 78 68 50 P, hp 100 112 130 143 156 163 Determine (a) the BEP, (b) the maximum effi ciency, and (c) the specifi c speed. (d ) Plot the required input power versus the fl ow rate.

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