A laboratory has installed a double-suction, three-stage, centrifugal pump with a discharge of 330 gpm under 200 ft head and running at 1200 rpm. It is proposed to install another pump with double suction and six stages, but of the same characteristics, to operate at 98 ft head and deliver 430 gpm. Calculate a) the speed of the proposed pump; b) the impeller diameter of the proposed pump if the diameter of the existing pump is 6 inches; and c) the type of the existing and the proposed pump.
A laboratory has installed a double-suction, three-stage, centrifugal pump with a discharge of 330 gpm under 200 ft head and running at 1200 rpm. It is proposed to install another pump with double suction and six stages, but of the same characteristics, to operate at 98 ft head and deliver 430 gpm. Calculate a) the speed of the proposed pump; b) the impeller diameter of the proposed pump if the diameter of the existing pump is 6 inches; and c) the type of the existing and the proposed pump.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A laboratory has installed a double-suction, three-stage, centrifugal
pump with a discharge of 330 gpm under 200 ft head and running at 1200 rpm. It is
proposed to install another pump with double suction and six stages, but of the same
characteristics, to operate at 98 ft head and deliver 430 gpm. Calculate a) the speed of
the proposed pump; b) the impeller diameter of the proposed pump if the diameter of the
existing pump is 6 inches; and c) the type of the existing and the proposed pump.
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