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Centrifugal Pump Shaft Calculation
Jan 04, 2017

Fluid density S=0.163x x flow x efficiency of remote/pump
Out s shaft
Shaft power 1-1. twice is the pump motor power
According to the principle of conservation of energy, technology of electric pump formulas are derived.
Water pump to do effective work W=Mgh (certain certain weight of medium to high h,h is the head)
--M water quality v m = ρ (ρ is the density of the medium, v medium volume)
V=Qt (Q represents the pump flow, t pump working time)
So the water pump do effective work W= Rho QtgH
Water pump power P=W/t= ρ QgH
Water pump shaft power (the actual power output) for QgH/P1= ρ η
--ETA said the pump efficiency
Actual P2= γ motor power P1
--Gamma motor safety margin (γ-value range of 1.1-1.3,-1.2)
If we play the medium is water motor power is calculated as P2= (1.2QgH)/(3600* η)
One unit of flow rate Q is: m3/h
Lift h units: m

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