The pump having the characteristics shown in Problem 14.14 was used as a model for a proto...

The pump having the characteristics shown in Problem 14.14 was used as a model for a prototype that is to be six times larger. If this prototype operates at 400 rpm, what (a) power; (b) head; and (c) discharge flow rate should be expected at maximum efficiency?

Problem 14.14

Performance curves for an operating centrifugal pump are shown below in both conventional units and in dimension-less form. The pump is used to pump water at maximum efficiency at a head of 90 m. Determine, at these new conditions, (a) the pump speed required and (b) the rate of discharge.