Inputs
Hydraulic power ÷ efficiency = shaft power.
Results
Hydraulic power
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Required shaft power
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Equivalent head
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Equivalent pressure rise
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Equations
Pₕ = ρgQH = QΔP
Pshaft = Pₕ / η
Pshaft = Pₕ / η
Hydraulic power is the rate of energy added to the liquid. Required shaft power is higher by the inverse of pump efficiency. This calculator does not include motor or drive efficiency unless you include those losses in the efficiency value yourself.