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P.Nithin Kumar
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India - Member - New Member

Join Date: Dec 2010
Location: Hyderabad,Telangana , India
Posts: 80
Good Answers: 1

Pump

12/16/2013 1:51 PM

I want to know the relation between Discharge , Head,Power of the centrifugal pump

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: pump

12/16/2013 1:57 PM

Well, pump performance curves show that sort of thing. They are provided by the manufacturer with the sales information for the pump.

In its absence, multiply the volumetric flowrate by the pressure rise through the pump and divide it by, oh, say 85%. That will give the power needed in round terms.

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lyn
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Join Date: Oct 2008
Posts: 42355
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#2

Re: Pump

12/16/2013 3:48 PM

Discharge = GPM or LPM of output

Head= PSI or feet of head of output

Power of the centrifugal pump See #1.
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varunpassi
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India - Member - Mechanical Engineer Engineering Fields - Petroleum Engineering - Mechanical Engineer

Join Date: Jun 2009
Location: Chennai (India)
Posts: 92
Good Answers: 2
#3

Re: Pump

12/17/2013 5:31 AM

Flow = Head^2 = Power^3

Water HP = (GPM x Head x Sp. Gravity) / 3960

BHP = Water HP / Effi of pump

Motor HP = BHP / Effic of Motor

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