Tuesday, May 1, 2012

Theoretical Hydropower Output

“Work volume per 1 second (J/s)” when the water of discharge Q (m3 /sec) drops from
the height of H(m) is shown as the following equation.


The above-mentioned equation shows that the lager “Q” (discharge) and the higher “H” (head)
is, the bigger “P” (power output) is. “Q” (discharge) mainly depends on catchment area at intake
point and an amount of rainfall in the catchment, while “H” (head) depends on topographical
conditions such as riverbed slope.

Practical Hydropower Output
No power conversion system can deliver as much useful power as it absorbs –some power is
lost by the system itself in the form of friction, heating, noise, etc.




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