Water Power
Water Power : This is the power required to deliver a given quantity of water against a given head or pressure in a given time. The water power can be determined by multiplying the flow in litres per second (L/60), the heat in metres (pump pressure in bars X 10. 19) and the force required to raise the water (9. 81 newtons per litre) to give the answer in watts. Thus WP = 9. 81 X L/60 X 10. 19 x P, WP = 100 X L X P / 60. Pump efficiency is the ratio of the water power output to the brake power input. BP = WP/ Efficiency
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