Author Topic: solar thermos  (Read 1283 times)

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Offline zeker

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solar thermos
« on: August 20, 2014, 12:32:01 PM »
of all the things I,ve lost.. I miss my mind, the most

Offline Greenguy

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Re: solar thermos
« Reply #1 on: August 20, 2014, 05:41:54 PM »
Vacuum tube solar collectors work very well at heating liquids.  It wouldn't surprise me a bit if this thing not only worked, but could actually boil the coffee right out of the tube if left in the sun too long.