Solar Water Heater from Brazil “Soda bottle solar water heater” -Panasonic ecoideasnet

For more eco ideas follow us on: This self-built solar water heater is made of plastic bottles, black painted milk cartons and PVC pipes. It is popular in southern Brazil. The water is heated passively by solar energy. As the hot water rises, it is naturally replaced by cold water, so no pump is needed. Construction reference:


Be Sociable, Share!

Post to Twitter

This entry was posted in Guest articles on Self build solar water heaters and tagged Tags: brazil bottle solar water heater, solar water heater from plastic bottles, pet solar water heater brazil plan, diy solar bottles, panasonic, soda, how to make solar water heater from soda bottles, solar water bottle heater o. Bookmark the permalink.

25 Responses to Solar Water Heater from Brazil “Soda bottle solar water heater” -Panasonic ecoideasnet

  1. nishhalwa says:

    can i get more information , i live in kenya and pleanty of plastic bottles every where killng the enviroment , please send me details a plan to make there and support our local people

  2. jobney76 says:

    @charizgr Did you notice that the water never touches the plastic bottles?

  3. bulletproof2353 says:

    id like to see some plans of how it actually works and is plumed and put together, also i would think it would be more efficient if the bottle arrays were housed in a box with a glass or poly top or sides too

  4. bulletproof2353 says:

    @mygabrielhernandez 1st of all you cant escape BPA its everywhere but who says the water would need to be drank or to come in contact with you at alll? it wouldnt it could be used to run a forced hot water heating system or as a closed loop to heat water for the tap or the shower, i resovoir tank heavily insulates with 2 coils,1 to the solar heater and 1 to the water line ,like a heat exchanger

  5. MyGabrielHernandez says:

    BISPHENOL A could be in the heated water. This substace raised concerns on human health, from fetuses to grown human beings. Please, do a water chemical analysis.

  6. MyGabrielHernandez says:

    Recomendo urgentemente fazer análise química da água armazenada. As garrafas plásticas quando aquecidas liberam Bisfenol A que é substância usada para fabricá-las. O bisfenol traz gravíssimos riscos a saúde humana (cérebro, tireóide, sistema nervoso, próstata, câncer de mama, etc). Uma pesquisa rápida na Wikipéia pode esclarecer um pouco mais. Mesmo usando a tecnologia PET ainda há risco para a saúde.

  7. jackhammer8981 says:

    just came from a japaneese technology video to this?.

  8. cyanscourt says:

    please upload a video on how to build this!

  9. chrischris180 says:

    what about winter

  10. jhonnholiday says:

    You can botles painted in black.. 

  11. Candoract says:

    tried this, except I painted the backs of the bottles with flat black, went in for lunch, came back out to a wrinkled mess, next one will be black painted copper through pop bottles lined with reflective Mylar, gonna try a slight vacuum in the bottles as well

  12. charizgr says:

    …for your information, heat could polymerize the plastic and releases toxins in the water!
    Not sure how serious can be, but certainly reaches our system also through the skin!
    Maybe some doctor knows more about?

  13. mcapps1 says:

    @mikelynch28strong U MAD BRO?

  14. mikelynch28strong says:

    God!  Stupid

  15. tigra says:

    @davidsj5566 One approach to avoid freezing is to have not water circulating inside the solar collector but some kind of antifreeze and let the antifreeze heat the water using heat exchanger.

  16. NancyToday says:

    That’s AMAZING!  I didn’t quite catch how to do it, but it sure looks cheaper than a solar panel!

  17. Robots4Sale says:

    @axelwchrist et??

  18. agauerm says:

    @davidsj5566 In Brazil we don’t have water freezing temperatures. Maybe enough to freeze water poodles or droplets of water, but not water inside tanks or pipes.

  19. ecowarrior576 says:


  20. davidsj5566 says:

    hi there very nice job, what would you do to provent the pips from freezing in winter time just asking. i like you idea and would love to put it to work in my home but i live in ireland, and it gets a bit cold in winter.
    nice job

  21. WikiLeaksTUBE says:


  22. Kanoee64 says:

    Good idea.

  23. axelwchrist says:

    change et to english 

  24. onablueplanet says:

    Well as you can see without metal it wont go above 45c even on a hot day. Which is fine and jolly good given that they used what was available and its a warm climate. But in the uk blackened stainless steel with one side weighing 9 kilos and one kilo of water traveling through the panel and then being stored in an insulated tank and fed back round is best. and will work even on a cold day the tank contains enough water for the house hold. The maths is basic physics.

  25. watsonpho1 says:

    @onablueplanet — Are you absolutely looney? 10 Kilos of copper? Today, the price of copper is US$7.58 per kilo. So you are suggesting that someone pay US$76 to heat one kilo of water? Of course you will be able to heat much more than one kilo of water, but according to your idea, you would only be able to heat 1 liter of water to the external equilibrium temperature at a time… for US$76. Bottles are usually free and pipe is cheap. brilliant idea.

Leave a Reply

Your email address will not be published. Required fields are marked *