Transform each column of the pump performance data of Prob. 1431E to metric units: V into Lpm

Question:

Transform each column of the pump performance data of Prob. 14–31E to metric units: V̇ into Lpm (liters per minute), H into m, and bhp into W. Calculate the pump efficiency (percent) using these metric values, and compare to that of Prob. 14–31E.


Data from problem 14–31E

The performance data for a centrifugal water pump are shown in Table P14–31E for water at 77°F (gpm = gallons per minute). 

For each row of data, calculate the pump efficiency (percent). Show all units and unit conversions for full credit. 

Estimate the volume flow rate (gpm) and net head (ft) at the BEP of the pump.

TABLE P14-31E V, gpm 0.0 4.0 8.0 12.0 16.0 20.0 24.0 H, ft 19.0 18.5 17.0 14.5 10.5 6.0 0.0 bhp, hp 0.06

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