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Water flow in a pipe

Water flow in a pipe

Water flow in a pipe

(OP)
Here at the plant on our Circulator Pumps we have booster pumps that use circ water for cooling and lubrication.  Unfortunetly the booster pumps fail often due to the low pH of our Circ Water.  New pumps have been order to correct issues we have had with old pumps.  My question is I am trying to calculate the amount of City Water we use (back up cooling and Lube for Circ Pumps) on a given day.  City water is 90 psi and the feed line is 1" ID.  Any ideas?

RE: Water flow in a pipe

Use Bernoulli's Equation to get flow rate.  Log the injector pumps' run time on Avg and Max days, that will give flow.

Engineering is the practice of the art of science - Steve

RE: Water flow in a pipe

(OP)
how do I use this equation?  the only variables I know are that the city water pressure is around 90 psi and the pipe ID is 1"...  is this enough info to calculate flow over a 24 hour period?

RE: Water flow in a pipe

No, that is not enough to calculate flow rate.  Cap the line off, and flow is zero, but you'd still have that same pressure and line size.  You could make various assumptions and calculate a maximum flow rate, but that wouldn't necessarily tell you a lot about the actual flow rate.

RE: Water flow in a pipe

Seem the solution is to fit a flow meter - or am I missing something with this posting.

RE: Water flow in a pipe

I'd agree with Artisi.  The cheap, easy solution is to put a rotameter on it.

RE: Water flow in a pipe

(OP)
was just looking for something quick and dirty...  

RE: Water flow in a pipe

well the cheapeast you can get is a bucket and a stop-watch - but not very practical.

RE: Water flow in a pipe

It's also a good idea to do something about the "the low pH of our Circ Water' to avoid corrosion in the piping & whatever you're cooling.

RE: Water flow in a pipe

(OP)
piping is titanium, the low pH is necessary to avoid scaling in condenser due to high calcium levels in grey water.  thanks guys

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