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Some Impact Man #15: Green houses for cold climates - 4 different ideas

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Blog entry by daltxguy posted 02-22-2013 02:10 PM 3291 reads 0 times favorited 5 comments Add to Favorites Watch
« Part 14: Peak Phosphorus, Peak Potassium: Peak Fertilizer- Learn to compost or perish Part 15 of Some Impact Man series Part 16: Tree Crops »



-- Disobedience is the true foundation of liberty. The obedient must be slaves. - Thoreau



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daltxguy

882 posts in 1732 days
hardiness zone 4a

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5 comments so far

View justjoel's profile

justjoel

1063 posts in 2015 days
hardiness zone 7a

posted 02-22-2013 07:57 PM

Very cool (warm) greenhouses. Love the geo-thermal one especially.

-- "We are stardust. We are golden. And we've got to get ourselves back to the garden." Joni Mitchell

View Radicalfarmergal's profile

Radicalfarmergal

4300 posts in 1898 days
hardiness zone 5b

posted 02-23-2013 08:06 PM

Thanks for the link, Daltxguy! All four greenhouse ideas are so interesting. The pit greenhouse design appealed to me the most. I like the idea of using the earth to insulate any walls that are not efficiently collecting sunlight. Having the structure partially in the earth also lowers its profile, potentially making it easier to blend into the landscape.

Using row covers inside of greenhouses is a technique that Eliot Coleman uses and describes in detail in his Four Season Harvest book.

-- "...I have nothing against authorities as such; I am only in favor of putting a question mark after just about everything they say." Ruth Stout

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daltxguy

882 posts in 1732 days
hardiness zone 4a

posted 02-23-2013 09:51 PM

RFG – I think the pit greenhouse would work well on your site – you have a good south facing view and the yard slopes downwards.

I agree with you Joel – the geo-thermal one appealed to me as well, mainly because I have large trees all around in my current location, therefore get very little sun here in the winter, but the ground is still warm if you dig deep enough.

175ft is quite a bit of pipe to lay, but they had a large greenhouse. I don’t know how they came up with the length, but I’d like to know how to scale that idea.

-- Disobedience is the true foundation of liberty. The obedient must be slaves. - Thoreau

View justjoel's profile

justjoel

1063 posts in 2015 days
hardiness zone 7a

posted 02-24-2013 01:43 AM

I can see where the length might have more to do with the temperature of the inflowing air than it does with square footage of the space being heated, though a smaller space would take less time to heat than a smaller one, etc…, and so they are related that way. I can see where there’s a whole lot of math involved, and I try to avoid that if I can. ;-)

-- "We are stardust. We are golden. And we've got to get ourselves back to the garden." Joni Mitchell

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daltxguy

882 posts in 1732 days
hardiness zone 4a

posted 02-24-2013 06:08 PM

”I can see where there‚Äôs a whole lot of math involved”
No doubt something involving triple integrals, markov chains, taking into account the Kondratiev long wave theory and keeping in mind the meissner effect.

-- Disobedience is the true foundation of liberty. The obedient must be slaves. - Thoreau

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