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jkace (Mechanical)
27 Jun 07 15:29
Hi,
I'm looking to quantify the cost savings of a decreased ECWT in a standard compression chiller, in hopes of showing the importance of an effective chilling tower. I'd like to put together an example of the effect on efficiency of a 5 degree increase in ECWT, say 90 degrees versus 85, and translate that into cost savings. Does anyone know of a reference which relates ECWT to COP or efficiency in kW/Ton, either as a graph or table?
Thank you very much for any help.
imok2 (Mechanical)
29 Jun 07 20:35
THIS MAY HELP: http://www.efficiencyvermont.com/pages/BBBD2005/docs/Chiller%20Efficiency%20Optimization%20at%20Part%20Load/York-%20Chiller%20Efficiency%20Optimization%20at%20Part%20Load.pdf
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jkace (Mechanical)
2 Jul 07 9:20
That is very close to what I need. I'm actually looking for the difference when the tower is working inefficiently, so a comparison that relates to higher temperatures (<85 degrees F). Thanks for the reference, its already getting me on the right path.
marcoh (Mechanical)
2 Jul 07 18:28
If you have access to energy simulation software and chiller data it should be relatively straight forward to compare the two scenarios.
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