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Creating a solar heating unit on the cheap | 23 comments (23 topical, editorial)

Re: Creating a solar heating unit on the cheap (3.00 / 0) (#7)
by ZooT on Thu Apr 3rd, 2008 at 11:41:03 PM MST
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I wonder how long a few painted flat black plastic 5 gallon pails full of water would stay warm after the sun went down?

[ Parent ]

Re: Creating a solar heating unit on the cheap (3.00 / 0) (#11)
by freeEnergy4me on Fri Apr 4th, 2008 at 10:38:59 AM MST
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I thought about this as well. I figure that most plastics that hold liquids have some decent thermal transfer conductivity. You'd think?

But aluminum is by far one of the best options. It is a great conductor.

I've seen those indoor columns of water that heat up thru direct sunlight then radiate heat at night.

[ Parent ]

Creating a solar heating unit on the cheap | 23 comments (23 topical, 0 editorial)

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