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A DC driven double-suction, single stage, centrifugal pump running at 1800 rpm delivers 3.5 gallons per ton (SC 1.02) from

A DC driven double-suction, single stage, centrifugal pump running at 1800 rpm delivers 3.5 gallons per ton (SC 1.02) from

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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1. A DC driven double-suction, single stage, centrifugal pump running at 1800 rpm delivers 3.5 gallons per hr. of seawater (S.G. = 1.03) from a source where the water level varies 2 m from high tide to low tide level. The pump centerline is located 3 m above the surface of the water at high tide level. The pump discharges into a surface condenser, 3 m above the pump centerline. Loss of head due to friction in suction pipe is 0.80 m and that in the discharge side is 3 m. The mechanical efficiency of the pump is 70%. Determine the following: a) Pump power in Hp b) Specific speed of pump in rpm c) If the centrifugal pump is modified to operate 1500 rpm, what will be the power input to the pump in Hp?
Transcribed Image Text:1. A DC driven double-suction, single stage, centrifugal pump running at 1800 rpm delivers 3.5 gallons per hr. of seawater (S.G. = 1.03) from a source where the water level varies 2 m from high tide to low tide level. The pump centerline is located 3 m above the surface of the water at high tide level. The pump discharges into a surface condenser, 3 m above the pump centerline. Loss of head due to friction in suction pipe is 0.80 m and that in the discharge side is 3 m. The mechanical efficiency of the pump is 70%. Determine the following: a) Pump power in Hp b) Specific speed of pump in rpm c) If the centrifugal pump is modified to operate 1500 rpm, what will be the power input to the pump in Hp?
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