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HVAC Designs 03-20-2013 06:06 PM

Feed Experimental chambers cold water
 
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A lab is looking to remove the current two large chillers they are using to feed cold to there experimental chambers. These machines only recirculate the water as a cooling mechanism. The have installed air cooled room on the back side of the lab constant temp of 4c. They have tried placing a 300L tank in the room to keep the water cold and have a continuous 1/2" pex loop feeding the machines. The machines require a constant water temp between 5-12c. When all four chambers are runing the water temp in the tank reaches 21c. Is there a way to reduce the water temp with out useing lage chillers ? Attached is a sketch.


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