Translate

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



22 comments:

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

    ReplyDelete
  2. This comment has been removed by the author.

    ReplyDelete
  3. This comment has been removed by a blog administrator.

    ReplyDelete
  4. This comment has been removed by the author.

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

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

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

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

    ReplyDelete
  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 ?

    ReplyDelete
  10. For a vacuum in*

    It wouldn't transfer cold well*

    Sorry 36 hours up and a phone that hates me.

    ReplyDelete
  11. very good this is useful for poor villegers

    ReplyDelete
  12. This comment has been removed by a blog administrator.

    ReplyDelete
  13. This comment has been removed by a blog administrator.

    ReplyDelete
  14. This comment has been removed by a blog administrator.

    ReplyDelete
  15. You know that instead of getting rich off the people why people with information could not just help his fellow man or women to get ahead in life with there families you received the info free I understand you may have put this all together but maybe there some thing I myself or others maybe able to help you or others

    ReplyDelete
  16. Hi. How do you manage this during the summer?

    ReplyDelete
    Replies
    1. Apertura y cierre de los conductos que acceden a la vivienda

      Delete
  17. Превосходный нагреватель. Летом можно воду нагревать, зимой теплоаккумулятор с наполнителем (углерод с шамотом; парафин с водой). Спасибо за полезные знания!

    ReplyDelete
  18. Hi... Just a test to see if this still working... If it does, i'll leave an other comment...

    ReplyDelete
  19. Well ... I tried something similar many years ago ... Not with a stone warehouse, but with asbestos sheets as solar panels, when I thought it was smart to heat heavy material to keep the heat for a long time ... The idea was not optimal !! ... I did not benefit from the early sun in the morning ... it took too long to warm up .. I think the same problem applies to this system ...
    However, I have a few suggestions ... It will be a bit more advanced, but more efficient ...
    The solar collector itself makes sense! ... The problem lies in the stone storage ..
    I suggest adding a thermostat that ensures that the hot air is led directly to the house if the temperature is below a preset limit .. When the temperature is reached, switch to the stone storage to heat up .. This can probably not be done with natural circulation, but a solar powered fan (with battery) can be added ..
    The system may require a difference thermostat, but this can be found cheaply on ebay with sensors ..
    I hope my feature can be helpful ..
    Regards Brian.

    ReplyDelete
  20. This is highly interesting. I love the idea of the corrugated sheet metal as a collector, but wondering about possible improving efficiency by using a heat-conductive bond where the 2 sheets adjoin, and what about doing a couple of layers of this, almost creating a honeycomb type structure (looking like an over-sized version of a vehicle radiator....coincidence? )and also doubling the amount of air channels?
    I live in Montana and will soon have a 400 square foot garage that will have a 9 foot ceiling. It can get well below zero for extended periods in winter but my main goal is to provide a comfortable working temperature (40-65 F) inside while outside ambient temps run from mid-teens above zero F up to mid 30s above zero F. The building would have full-sun on the south wall on sunny days. Would a solar heat collector accomplish this and if so what size and design might I need? Thanks for any help.

    ReplyDelete