Draw a head-discharge curve for the pump described in Problem 4-22 operating at 1700 rpm...

Draw a head-discharge curve for the pump described in Problem 4-22 operating at 1700 rpm. Locate points along the curve at 60 percent bep, and 120 percent bep, and sketch the pump operating envelope as shown in Figure 4-12. (Answer bep: 1700 gpm, 33 ft)

Problem 4-22:

The discharge, head, and efficiency data of a centrifugal pump follow. The best efficiency point (bep) is at 2500 gpm. The impeller diameter is 15 in., and the operating speed is 2500 rpm. Plot the characteristic curves of head discharge and efficiency as diagramed in Figure 4-11, and locate the bep and the recommended pump operating range. Calculate the power input at the bep.