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Post by The witch on Mar 30, 2007 12:15:18 GMT 1
This week the Strawbridges erected a greenhouse and installed a heat sink  The idea of the heat sink is to heat the greenhouse at night. |
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Post by sweetleaf on Mar 30, 2007 13:09:49 GMT 1
I missed that! :-/How is a heat sink constructed then? :  I still have one more greenhouse to build... |
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Post by The witch on Mar 30, 2007 14:08:56 GMT 1
On this site www.itsnoteasybeinggreen.org/inebg_faq.htm it says - How does the greenhouse heat sink work?
Some details are in the book, but half the adventure is working out for yourself and thereby customising you solution. All you need is:
The heat sink is imploded glass - we used bottles from various parties and the local pub - imploded courtesy of Krysteline www.krysteline.net
Big hole - we lined it with polystyrene that came as packaging
Pipes were standard waste pipes for under sinks etc
Fan was a small 12V computer fan from a market £1.20 - in a box made of scrap wood
A 12V deep cycle leisure battery
Small 11w solar panel and charge controller
Old chimney cowl for the air to be pushed out the glass
Air sucked down from the apex heats the broken glass under the floor. Fan runs 24 hours a day. As the greenhouse cools the cooler air is still pumped through the glass, but when it comes out through the cowl, at floor level, the glass has warmed it so a constant supply of warm air is now being pumped through. |
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Post by madonplants on Mar 30, 2007 14:20:01 GMT 1
I recorded it to see it again, so I can fully inderstand it, so when we do get a greenhouse, I can install one. If you want me to, I could put it onto a dvd and send it to you, Sweetie?
Keith
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Post by sweetleaf on Mar 30, 2007 14:37:34 GMT 1
wicked idea, keith! ;D Thank you.......
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Post by 4pygmies on Mar 31, 2007 7:38:37 GMT 1
Is it me being thick here but I can't quite see the point of this unless you are growing huge quantities of tender fruits and trying to extent the season for a few weeks........it seems like an enormous amount of effort for not that much reward. There are other ways to collect heat in that's what is required......Some one please explain it to me?  (I'm not just being mardy - I love this family and applaud their efforts...wish I'd met a Mr Strawbridge 20 years ago...) |
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