Equations · equation
Hydraulic Power
Fluid Dynamics
- Equation
- P = ρ g Q h
- Field
- Fluid Dynamics
- Symbols
- P power available · ρ water density · g gravitational acceleration · Q volume flow rate · h head: the height the water falls
Significance
Head times flow times the weight of water — the power a hydro site can give before turbine and generator losses take their share. A hundred metres of head and a cubic metre a second is about a megawatt. It is potential energy per second, and every dam, mill race and micro-hydro scheme is designed on it.
Referenced by
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Open on the Equations shelf — the interactive card, the filters, and everything alongside it.