Hydraulic Efficiency

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Hydraulic efficiency, abbreviated as \(n_h\), a dimensionless number, is the ratio of hydrodynamic energy in the form of fluid to the amount of mechanical energy delivered to the rotor.

 

Hydraulic Efficiency Formula

\(\large{ n_h = \frac{ Q_a \; 100 }{ Q_t }  }\)   

Where:

 Units English Metric
\(\large{ n_h }\) = hydraulic efficiency \(\large{dimensionless}\)
\(\large{ Q_a } \) = actual flow rate output \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\)
\(\large{ Q_t }\) = theoretical flow rate \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\)

 

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Tags: Hydraulic Equations Efficiency Equations