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How to calculate required HP for a water supply pump ,booster pump , sump pump in a residential building (3B+G+13+R)?

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تم إضافة السؤال من قبل Rizwan muhammad
تاريخ النشر: 2016/06/14
SAAD AHMED
من قبل SAAD AHMED , HVAC Engineer , Ali Muhammad Al Qahtani Contracting Company

The general formula to find the required hp for pump is as follows.

Bhp = (USGPM X Head) / (3960 x Motor Efficiency x Pump Efficiency)

When you get the answer by above formula, multiply the result by 1.2 to convert the bhp to hp.

Ramy Zidan
من قبل Ramy Zidan , MEP BIM Corrdinator , Reliance Contracting Company

Energy imparted to water by the pump is called water horsepower - and can be calculated as

Pwhp = q h SG / (3960 μ)    (1)

where

Pwhp = water horsepower (hp)

q = flow (gal/min)

h = head (ft)

SG = 1 for water Specific Gravity

μ = pump efficiency (decimal value)

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