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RE: Head Formula
where does frequency come into it?
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RE: Head Formula
I am asking that anybody knows like this formula;
Head* (1,1)^2 = max head
RE: Head Formula
I think you're looking at affinity law here relating to the speed of a centrifugal pump.
This law states that the head varies as a square of the speed. Therefore for a pump with a head h1 at 50 htz, all other things being the same, the head at 55 htz is h1 x (55/50)^2 or h1 x (1.1)^2.
Flow is proportional to speed and power proportional to speed^3.
Just search "affinity law pumps".
You use it to calculate the change in head when you change speed, e.g. on when using a VFD.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Head Formula