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Thread: home made solar panel

  1. #9
    cp-connection's Avatar
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    I just watched some you tube videos and cruised http://www.builditsolar.com/index.htm . It is loaded with DIY projects. Then I did my own thing.

    The you tube guys are making these with lots of glue, pop cans and tiny DC fans with preset thermostats. I think there isn't enough air moving through to adequately vent the heat. Any heat that builds up in the box will radiate back through the face. There are almost certainly hot spots if you make manifolds and vertical tubes like those guys do. Also, if your thermostat cuts on at 120F you're missing out on 2 hours of morning heat.

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    Quote Originally Posted by cp-connection View Post
    I need to figure a way to have less bends in the ducting to increase air flow. This will increase heat transfer and lower radiant heat loss out of the face of the panel.
    I would consider placing the ducting long ways rather than from side to side, that way you would minimize the bends. Just an idea...

  3. #11
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    Quote Originally Posted by F R e N c H 3 z View Post
    I would consider placing the ducting long ways rather than from side to side, that way you would minimize the bends. Just an idea...
    If the panel was positioned horizontally rather than vertically I could run the ducting long ways but still have the hot air flowing upwards. It would be almost 1/3 the amount of bends as the original. Nice!

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    Just realized Andy had posted the same idea before me -.- I really shouldn't post late at night.
    Great minds think alike though right

  5. #13

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    not a bad idea at all
    L'imagination est la clé de la logique de la pensée, une plus grande vérité éternelle.
    Me

    Formerly Plantea

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