It is required to pump water at 1.25 m3 /s from a lower to an upper reservoir. The water surface in the lower reservoir is at an elevation of 20 m, and the upper reservoir elevation is 23 m. The length of the 750-mm-diameter pipe is 60 m. The friction factor can be assumed constant, f = 0.02, and the entrance and exit loss coefficients are 0.5 and 1.0, respectively.
(a) What type of pump is best suited for this system if the impeller speed is to be 600 rpm?
(b) Assuming a reasonable efficiency from an appropriate pump curve, estimate the power in kilowatts required to operate the pump.