10.12 A pump (Peerless 8AE20G, Appendix C) with the 20-in impeller operates at 1775 rpm at maximum efficiency. It supplies the pipe-line shown in the figure. Determine the pipeline loss coefficient K in the equation hL = KQ2, with Q in gpm. Determine the flow rate between the two reservoirs if two of these pumps operate in parallel, assuming the pipeline K value remains unchanged

10.13 Data from tests of a pump with a 12.3-in.-diameter impeller operated at 1450 rpm are

Develop and plot a curve-fit equation for NPSHR versus volume flow rate in the form NPSHR=a+bQ2, where a and b are constants.
If the NPSHA =20 ft, estimate the maximum allowable flow rate of this pump.

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El. 400 ft El. 100 ft P10.12