
01/16/13, 10:47 AM
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Moderator
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Join Date: Jul 2004
Location: Mountains of Vermont, Zone 3
Posts: 8,878
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This is quite doable. Our house has a high thermal mass inside an insulating envelope and big windows for solar gain. Most of our heat comes from the sun as passive solar. The large masonry mass (100,000 lbs) of the building soaks up the heat and stores it. We live in the mountains of northern Vermont and burn less than 3/4 cord of wood per year. The house floats as low as the mid-40's F during our cold winters. The little bit of wood brings it up into the 60's. This past week it was warm outside (17°F to 40°F) and we haven't lit a fire all week because the house was staying in the 60's without any extra heat. When it gets cold again we'll light a fire. See:
http://SugarMtnFarm.com/cottage
We also have had greenhouses that are heated by our livestock (rabbits, sheep, pigs, chickens, ducks, geese) and that works very well. I think that the CO2 given off by the animals breathing also enhances the plant growth.
Cheers,
-Walter
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