Passive Annual Heat Storage...
There has been quite a bit of work already done on this and it's called Passive Annual Heat Storage, or PAHS for short.
There is information about it:
Some people are having success making this thing work.
-AC
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I'm not an HVAC technician. In fact, I'm barely even a hacker...
Last edited by AC_Hacker; 04-27-14 at 09:58 AM..
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