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Old 12-03-12, 02:51 PM   #1361
charlesfl
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Join Date: Dec 2009
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I found a masters thesis on Coaxial Borehole Heat Exchanger which comes up with interesting conclusions about earth coupled heat exchangers comparing the two pipe system we use. It is very detailed with lots of testing. It can be found at

http://www.kth.se/polopoly_fs/1.2039...0Guillaume.pdf

Analysis of a Novel Pipe in Pipe Coaxial Borehole
Heat Exchanger

Hope this helps . Charlesfl

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