
09/23/07, 03:29 PM
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Singletree Moderator
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Join Date: Apr 2002
Location: North Alabama
Posts: 8,848
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Antifreeze in a sealed line totally free of any air with one way pressure valves routed through a heat collector is one design of solar water heaters. As the antifreeze in the tubing in the collector heats up it passes through the oneway valve going to the coils of the water heater. At the same time the cooler antifreeze is drawn up into the solar collector using the same principle that makes sterling engines function. Of course it only works when the sun is shining.
A standard small scale storage battery solar electric application coupled with heated containers would probably be more viable.
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