Posted by VaTom on March 05, 2014 at 15:24:02 from (70.32.203.33):
In Reply to: Solar heating? posted by 55 50 Ron on March 05, 2014 at 09:58:58:
Ron if you are building new, you can build a shop that will never get cold or hot. I have one. The system is called Passive Annual Heat Storage (PAHS). Not my invention, I read the book 30 years ago and decided it was what I needed.
The basic idea is to dump excess summer heat into the building mass for later retrieval as winter heating. Not a few days' heat storage, but six months'.
If you are looking for retrofit heating, PAHS is not it. You will do well with active solar panels, as described here. Lots of variations on that theme. BuildItSolar.com is a large website dedicated to the subject.
PAHS can provide an annual indoor temperature that hovers near 70º F. A little colder in winter, a little warmer in summer. This is independent of latitude. Works in Alaska, works in Texas, with some minor adjustments to the design.
We have had our coldest and snowiest winter ever here, snow on the ground for the past month. Interior temperature has never dropped to 63º F, with no supplemental heating. We are often not home, no problem as this is a totally passive system.
This is not particularly good performance because when I built I didn't understand how PAHS works. Better designs will maintain 68º in January.
Houses are the primary interest of course, but the same principle applies to any use. Cost of construction is favorable compared to stick built, usually cheaper.
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