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Centrifugal pump calculation
Can anyone help me to explain how to calculate the size of motor needed for pumping? We will pump about 150 liters of water per minute from one pond to a tank roughly 40 meters away.
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3 Replies
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Sadly, no.
I cannot help with this.
Good luck!
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Hi Marika,
There are some information missing to determine the power requirement for your pump. You will need to know the static lift = elevation from the pond water surface to the tank water surface and you will need to know the pipe/hose friction loss. In addition you will need to know the efficiency of the pump. If you get that information the calculation is pretty straight forward Pm = Head (m) x Flow (m3/s) x density (kg/m3) x g (9,81) – you can read more in the Pumpbook https://pumpfocus.com/pumpbook/centrifugal-pump-losses-and-efficiency/
Hope this help!
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Right Etis, well explained! But don’t forget to take pump efficiency into account – as you mentioned in your answer but forgot in the equation- when calculating motor power. 🙂
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