Water flow in a pipe

[Rpsfinest]

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?

 

[LHA]

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

 

[Rpsfinest]

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?

 

[JStephen]

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.

 

[Artisi]

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

 

[iainuts]

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

 

[Rpsfinest]

was just looking for something quick and dirty...

 

[Artisi]

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

 

[kenvlach]

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.

 

[Rpsfinest]

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