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The "raw" idea of ​​a solar water heater))))

I read on the "alternative." Water heaters from which just do not. But everything is divided into types, each of which has disadvantages:
1. With a parabolic mirror. (It requires particularly accurate pointing to the sun, which greatly complicates the design. Accordingly, it reduces reliability.)
2. With a cylindrical reflector (A little easier, but still difficult to position)
3. Ordinary, flat. (Simple. Reliable. But low efficiency)
And yet, as a "supporter of the advantages of cast-iron pans over Teflon and ceramic", I came to the conclusion that "the smaller the mechanism, the longer it will last." Therefore - flat, ordinary.
In his spare time, he was considering the option of increasing efficiency. A burnt quartz lamp caught my eye. (In shape - like an ordinary luminescent, only transparent, without a phosphor).
And if you cut the cap. (I think it’s not difficult to make an engraver with a diamond disk. At least all the “beer glasses” I have in the garage and in the basement are former wine bottles.)))))). So, verified. It works))))) Get a long glass tube. If you place inside the copper (normal, for heating) previously blackened, and seal the ends. We get a “greenhouse” that does not lose transparency over time. If there are a lot of such tubes in a row, with an interval of ... 1 cm (between the walls), parallelized, and put the entire structure in a box insulated with, say, glass wool under the foil, then such a battery can be aimed at an angle of 45 degrees to the south, and the efficiency will be the same throughout the daylight hours, because each tube will be illuminated in any position of the sun. And you can also place below this next, second, "in a checkerboard pattern." Increase the efficiency of a unit of area ....
The tube can be cut from fluorescent lamps, washing the kercher with a phosphor then. (I know, I know about the harmfulness)))))
Wat, what do you think? Are there any pitfalls in this design? And then I have not done this yet, we can not know what ....
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While he refused this season - he muddied the next construction site, there will be no time ... But another idea came up: to build a gazebo with a domed hexagonal roof. Make the roof of the collectors, and place a reservoir of water in the "dome" (there a couple of cubes will fit). Make a mixing unit for irrigation of the greenhouse, and additionally use hot water for a summer shower and sink in the gazebo ....
But this is in the next, God forbid, year ....
Valery! If you decide to realize your idea, try to make it not flat, but cylindrical. From the north-east to the north-west side, you can cover it with a material that: either reflects light or vice versa, so that it gives off heat when heated. And do all this in the form of a flask.
It will be of course, but not by much. Modern absorbers use special coatings that improve the absorption and transfer of heat to the inside. This is due to the creation of turbulent eddies near the tubes, due to which better convection and heat transfer are achieved.
Author
So I also meant it !!! "Cool" I called the idea in general "alternative." Because I didn’t pick up my idea of ​​a “3D greenhouse,” which you don’t have to turn over the sun, on the very site where you got homemade goods for your work!))))) Only there it was made of plastic bottles, respectively, did not meet my requirements (durability and "no maintenance requirement")
I thought that it was my question about the solar battery that "drove" you to this site, and you found a wide field for activity there!))))))) That's why I say: "And where is it thanks ??")))) )))
Just in case: All this is a JOKE of HUMOR! No more...
All people are different ... You are a journalist, you need to write articles. I’m a practical master and I don’t like writing articles, but I earn in a different way ... (Otherwise, I would have described dozens of my home-made products. But I didn’t take pictures of them, didn’t prepare, and therefore I won’t do this anymore, because I don’t want to )))). As for the new ones that I will be working on, I’ll click on the camera in the process and post it. Suddenly someone will like my idea and he will use it. )
However, I got distracted .... I want to start this homemade product in the spring when I finish the current one (crossbow toy for entertaining shooting). Therefore, I ask experienced advice:
HOW DO YOU SUCH A SUNNY HEATER WILL BE EFFECTIVE SIMPLE PAINTED IN A BLACK FLAT BATTERY? Or is it not worth messing around?
Well, maybe cool for you, it didn’t seem interesting to me, sorry) Yes, and I don’t have any such lamps. If you have a lot, then go for it.
In principle, a “greenhouse” can be made from anything, even from a three-liter can. Insert the absorber (coil) and woo-a-la into it)

(judging by the site that I read before, and the set of your new homemade products.)


These homemade products are not mine, I am only a journalist. At the bottom of the articles there is a link to the source.
Author
But in practice? .... Do you have enough space near the house to place such a structure? I do not have! Yes, and you, I think, too. Again, relying on practicality, you need to create such crap so that:
1. To make of "garbage", residues and other things. (Otherwise, if you buy a lot of things ... it’s easier to continue to use an electric heater + a dual-circuit gas boiler, as I have now. It’s not so expensive .... Therefore, if the design will self-sustain for at least five years - she IMHO, nafig is not needed! To do for the sake of "do" I will not ..)
2. She must not bother me! (It is necessary to arrange it so that it does not spoil the aesthetic appearance of the site, and does not take up space.And did not catch the eye !!! I have no purpose to show how well done I am and how cool I did! I need cheap hot water!)))))
3. The design must be reliable and NO MAINTENANCE! "Set and forget!". Otherwise, if from time to time I have to set up something, change something, keep track of something ... I’ll just throw it away! It’s easier for me to pay a bit, without leaving my home, with a mouse click in Internet banking, and get hot water just by opening the tap!)))) Moreover, I live from time to time in both of my houses (city and country). In winter, I prefer an apartment.
So, the idea is certainly a good one! ..... But .... not for a personal plot ....))))))

Dmitrij, and where thanks? )))))))))). I threw you such a cool topic)))). (judging by the site that I read before, and by the set of your new homemade products.))))))))))))))))))))))))))))))))))) )))))))))
and I have a very simple idea how to greatly increase the efficiency of any solar heating system.

I saw in a movie a steam-powered power plant. The idea is that there is a tower of water in the desert, it is painted black and many mirrors project light onto this tower. Of course, heat is generated in it and the power plant is operating.

So, such a joke can be done with any solar collector, stove, etc. That is, to obtain additional sources of light (heat) by directing them through the mirrors.

You can even arrange the mirrors so that you do not have to rotate them. That is, each row at a certain angle, when the sun sets, just new rows of mirrors will come into effect. Well, or make them turn around.
As an option, you can also come up with a long collector so that the solar bunny, even with the movement of the sun, remains on the collector for as long as possible. Well, this is another problem) the main idea is cool.

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