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Friday, June 19, 2009

Thermosiphon Solar Air Heater with heat storage


This is a solar air heater that uses the sun's heat to pump air into the house. It also stores heat into a bed of rock. Even after the sun sets, the heat from the rocks will still cause the thermosiphon effect to continue to work. After the sun sets, an insulated cover should be placed over the solar collector. Cheap double pane tempered safety glass can be found for free or really cheap at a glass shop. Just ask for used sliding glass doors. If they have moisture between the layers then that is easily fixed. When the glass heats up in the sun, it will steam the moisture out. You can then re silicone the edges between the glass sheets. I can pick these doors up for $20 each from the local glass shop. They told me any glass sitting outside is there to be thrown out so I can have that stuff for free.

For the inside of the solar collector, just use corrugated sheet metal roofing. Just sandwich two pieces and screw together. This forms chanels and gives more surface area for heat transfer. Paint the side facing the sun with high temp flat black spray paint. They sell that paint for barbeques.

Richard



12 comments:

  1. I love your ideas! Each day I can't wait to see what else you will come up with. :)

    Wretha

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  2. Wretha,

    Thanks, sometimes it's hard to think of things. But on those days when I'm extra creative, I'll come up with 4 or 5 things and put them on the list. I keep a running list for about 2 weeks. (I bet you'd love to see it, wouldn't you?)

    Oh, and feel free to make suggestions like you did with the worm composter. I like bouncing ideas back and forth and watching them grow.

    Your blog is great as well. Keep up the good work!

    Richard

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  3. Here's another one for you to improve upon
    http://www.off-grid.net/2009/06/20/how-to-harvest-rainwater/

    Wretha

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  4. cool, I'll have to look at that.

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  5. just love how basic heatings systems can be....great idea, will surely implement it somewhere.

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  6. Silicone sealer is not compatible with the butyl sealer used on double glazed units.

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  7. Has anyone actually built this yet? I like this design and plan on building something similar soon.

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  8. This comment has been removed by a blog administrator.

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  9. If u used black thin aluminum pipe with a reflector behind them built into a box u could for a vacuum in. It transfer cold well but u would still get the heat from the sunshine. Like an evacuated tube but bigger and low teck. .. maybe ?

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  10. For a vacuum in*

    It wouldn't transfer cold well*

    Sorry 36 hours up and a phone that hates me.

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  11. I think your blog is very powerfull to me. We have hope that u can keep up the good job. Will u please take a look at our page also?Solar water heater

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  12. very good this is useful for poor villegers

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