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Old 04-29-16, 07:25 AM   #25
Steve Hull
Join Date: Dec 2012
Location: hilly, tree covered Arcadia, OK USA
Posts: 829
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"If you feel the need to maximize contact area on the outside wall, and don't want to solder the tubing to the pipe, toothpaste or zinc oxide ointment are nearly as good at conducting heat."

Jeff, with heat do these two materials get runny? I guess I could do the experiment and put some toothpaste in the microwave . . . .

This is a great suggestion as the standard heat conducting gells are expensive.

Thank you for this quick, easy and inexpensive hack.

consulting on geothermal heating/cooling & rational energy use since 1990
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