Question

Problem 4

The 32-in-diameter pump in Figure 2 (above) at 1170 r/min is used to pump water at 20 degrees C through a piping system at 14,000 gal/min. (a) Determine the required brake horsepower. The average friction factor is 0.018. (b) If there is 65 ft of 12-in-diameter pipe upstream of the pump, how far below the surface should the pump inlet be placed to avoid cavitation?

Question image 1