Chilled water system bypass
Chilled water system bypass
(OP)
In order to keep the minimum flow through a chiller (or a boiler), where is a good location to put a bypass in a variable primary pump system?
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Chilled water system bypass
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RE: Chilled water system bypass
RE: Chilled water system bypass
Listen to Kiwi, good answer.
Also, please avoid posting the same thing in more than one forum. Multiple threads on the same topic makes for a confusing situation.
This is the most appropriate place for your question, I think.
Take a read through the forum policies when you have a chance, the link is below my signature.
Best to you,
Goober Dave
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RE: Chilled water system bypass
RE: Chilled water system bypass
This might or not matter depending on your application. If you have one relatively small 24hr critical load then the cycling of temp might be detrimental to control. If you have a few zones of comfort cooling on night setback then no one may care.
The buffer tank adds capacity to the hydronic loop which stores and releases energy, evens out the temp variation and reduces the cycling on the compressor.
RE: Chilled water system bypass
Another option to a buffer tank is:
Oversize your air seperator
OR
Oversize your mains
to meet the minimum volume requirement needed
knowledge is power
RE: Chilled water system bypass
RE: Chilled water system bypass
The best place to have the minimum chiller bypass valve is the plant room itself between the supply and return headers.I have not seen it being located anywhere in VPF systems.This valve operates with a high differential pressure and therefore can be noisy.The buffer tank is provided for an entirely different reason and is no substitute for the bypass valve in VPF systems.
RE: Chilled water system bypass