Estimating water flow/usage with pump curves
Estimating water flow/usage with pump curves
(OP)
Hello,
I am very new/know nothing at all about pumps, so I sincerely apologize for the stupidity that is about to be spread all over this page. I currently have pump curves showing head (ft) and Eff (%) vs. flow rate (gpm). As well as a power line (hp) at the bottom. I know time and several other parameters of the pumps themselves, such as pipe diameters, pipe length, total head, discharge pressure.
So I guess my questions is, what other information do i need in order to estimate monthly water use from a pump that say I know runs 20 hours a day. Amps, hp, voltage? I have no idea. And no, I don't have a flow meter available. Sorry. Any information would be appreciated, thanks.
I am very new/know nothing at all about pumps, so I sincerely apologize for the stupidity that is about to be spread all over this page. I currently have pump curves showing head (ft) and Eff (%) vs. flow rate (gpm). As well as a power line (hp) at the bottom. I know time and several other parameters of the pumps themselves, such as pipe diameters, pipe length, total head, discharge pressure.
So I guess my questions is, what other information do i need in order to estimate monthly water use from a pump that say I know runs 20 hours a day. Amps, hp, voltage? I have no idea. And no, I don't have a flow meter available. Sorry. Any information would be appreciated, thanks.





RE: Estimating water flow/usage with pump curves
"I think it would be a good idea."
- Mahatma Gandhi (1869-1948),
when asked about Western civilization
RE: Estimating water flow/usage with pump curves
RE: Estimating water flow/usage with pump curves
"I think it would be a good idea."
- Mahatma Gandhi (1869-1948),
when asked about Western civilization
RE: Estimating water flow/usage with pump curves
RE: Estimating water flow/usage with pump curves
This should give you a reasonable answer for the pump output, as a further check follow BigInch's suggestion by calculating a head / system curve for the pipeline and compare the two results.
RE: Estimating water flow/usage with pump curves
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RE: Estimating water flow/usage with pump curves
"I think it would be a good idea."
- Mahatma Gandhi (1869-1948),
when asked about Western civilization
RE: Estimating water flow/usage with pump curves
RE: Estimating water flow/usage with pump curves
If it's a slurry duty it is extremenly difficult to give an accurate flow rate without some means of measurement as the solids load and density is very changeable, this has a major effect on the pump performance - unless of course you have a tightly controled feed system into the pump.
For a slurry pumping application, the performance should be a measure of the amount of solids pumped over a given period - a minute by minute pump performance is really a bit meaningless unless you are measuring solids and density at exactly the same time.