Take Nothing for Granted

Mazzoni, Steve
August 2008
Heating/Piping/Air Conditioning Engineering;Aug2008, Vol. 80 Issue 8, p15
The article presents an investigation on why the supply water is warmer than the return in a certain chilled-water plant. It reviews the design of the primary and secondary flows of the plant and provides four assumptions that explain the possible causes of the problem. The supply water delivers to the loads 8 to 10 degrees Fahrenheit warmer than the return water.


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