Solar hot water - Hot water system

If we create the bottom half of a thermosiphon by putting a black hose into a foam box and cover it with a sheet of glass, we will see the beginnings of a (hopefully) slightly efficient (albeit temporary and largely useless) solar collector.

If we use a large insulated drink bottle to concentrate collected hot water as the top half of the thermosiphon, we will see the beginnings of a temporary and largely useless solar hot water system.

Its night time.

Its not collecting much heat.

It's not very well designed. There are bits where the tubes form loops, and all tubes go down in through the top. My head says it should work a bit. The rest of me is not so sure.

We shall see when the sun next shines.


  1. Solar hot water systems are environmentally friendly and can now be installed on your roof to blend with the architecture of your house. More than 1.5 million homes and businesses in the United States have invested in solar heating systems, and surveys indicate that over 94% of these customers consider the systems a good investment.

  2. If my business had a 94% customer satisfaction statistic, I'd be disappointed, and I'd do something about it.
    Perhaps you could just leave that number out of your promo posts.
    It doesn't look so good.

  3. we are happy to read your post , its a very nice and more informative...
    Exert Realty provides all energy


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