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Thermosiphon question
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4
comments (4 topical)
Re: Thermosiphon question
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3.00 / 0
) (
#4
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by
hydrosun
on Fri Oct 23, 2009 at 09:41:23 AM MST
Thermosyphon works by the water heating up and becoming lighter and being pushed up by the water that is heavier in the return pipe. As long as the water is drawn from the bottom of the tank the water in the return pipe will continue to be heavier than the water in the solar water heater. That will push the water through any small obstructions like a 90 elbow. Just keep the downward flow of heated water at the tank to a minimum.
The problem with the connections you are using is when water is used from the hot water tank. Cold water being pushed into the cold water supply pipe can just as easily go through the pipes to the solar water heater as through the hot water tank. So half of the flow will bypass the tank and put cold water into the hot water outlet. This may make the water temperature too low and need to be heated by the backup heater. To avoid this problem I put a tee before the pressure relief valve for the hot side of the solar water heater and use the drain for the cold side. That takes the solar water heater out of the loop for using hot water.
Chris
Thermosiphon question
|
4
comments (4 topical)
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