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Shaft Power
Shaft Power & Specific Speed
Shaft Power
P = ρ·g·Q·H / (3.6×10⁶·η)
Density
kg/m³
Flow
m³/h
Head
m
Efficiency
%
Calculate
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Effective power
—
kW
Shaft power
—
kW
Motor
—
~
—
kW
Specific Speed & NPSH C
Flow Q
m³/h
Head (per stage)
m
Stages
Inlet
Speed n
r/min
Required NPSH
m
Calculate
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Specific speed ns
—
Suction C
—
Engineering estimate. Verify with manufacturer.