dolphindream
Passive Solar Heater on a Sunny Day
This heater is my sunny summer window and has been in service for three years with only minor adjustments.
See more details at solarevolution.net
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Comment by Jill Karlin Butler on February 23, 2008 at 10:32am - Thanks for the video.... I understood that although it is 27 degrees outdoors, with a simple piece of plastic and a metal frame taped over a window you are able to insulate to temperature of 82 degrees? I 'm not sure I understood.
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