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Multiple Cooling Towers equalizer piping

Multiple Cooling Towers equalizer piping

Multiple Cooling Towers equalizer piping

(OP)
What is the correct way to size an equalizer pipe for 5 cooling towers working in parallel?
I am not able to find this anywhere.
Thanks

RE: Multiple Cooling Towers equalizer piping

Check with BAC or Bell and Gossett's "Cooling Tower Pumping and Piping" tech manual.

RE: Multiple Cooling Towers equalizer piping

What kind of tolerance are you looking for equal flows?

Effectively you will be trying to equalize the pressure in each of the branches. If you have a fixed flow you can introduce orifices to reduce flow in the higher flow branches. If it is more variable you may want to explore using a flow control valve and a flow meter on each branch.

RE: Multiple Cooling Towers equalizer piping

The bigger the better. Running towers in parallel will prevent problems with shrink and swell with starting and stopping of condenser water pumps. Keep velocity below 3 fps, max conditions. It's not like piping that gets distributed throughout a building; you might be talking about a 30' run. Go for the 14" vs. the 10" (as an example) to avoid problems.

RE: Multiple Cooling Towers equalizer piping

Just to clarify, is this equalizer connecting sumps together or supply lines? If sumps, the "bigger is better" theory is definitely the way to go.

RE: Multiple Cooling Towers equalizer piping

You can use GESTRA sizing of header in a specific pipe branches

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