How can we produce electricity by pressure of pipelines?

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Thread Starter

Maryam

As we know when the water is coming to city from other cities has a lot of pressure.by using pressure valve we decrease the pressure. Is there any better way to break pressure and earn electricity power?
Thank you
 
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Bruce Durdle

Power available in watts is the product of pressure drop in Pa and the volumetric flow in m^3/s. 10 m head is a pressure of about 1 atm or 10^5 Pa. So a flow of 10 m^3/s and an elevation drop of 10 m will give you 1 MW.

If the pressure you are dropping through a valve is developed by a pump in the first place, it makes more sense to reduce the pumping power by using a variable-speed drive.
 
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