# 1. The pump in Example VIc.3.1 is used to deliver water to a height of 110 ft above the source…

1. The pump in Example VIc.3.1 is used to deliver water to a

height of 110 ft above the source reservoir. Total pipe length is 600 ft and

the pipe diameter is 14 in. The pipe run includes a fully open gate valve and 2

threaded 90 elbows.

a) Find the flow rate, b) How do you maximize efficiency?

Example VIc.3.1. A performance curve of a typical

centrifugal pump having an impeller diameter of 41.5 inches at 710 rpm (pump A)

is shown in the figure. Find the performance curve of the homologous pump (pump

B) having a head and flow rate of 325 ft and 3000 GPM at the point of best

efficiency.

2

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1. The pump in Example VIc.3.1 is used to deliver water to a

height of 110 ft above the source reservoir. Total pipe length is 600 ft and

the pipe diameter is 14 in. The pipe run includes a fully open gate valve and 2

threaded 90 elbows.

a) Find the flow rate, b) How do you maximize efficiency?

Example VIc.3.1. A performance curve of a typical

centrifugal pump having an impeller diameter of 41.5 inches at 710 rpm (pump A)

is shown in the figure. Find the performance curve of the homologous pump (pump

B) having a head and flow rate of 325 ft and 3000 GPM at the point of best

efficiency.

2. A pump delivering water at a rate of 100,000 GPM. The

maximum available NPSH is 50 ft. Find the maximum speed to avoid cavitation.

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