The cheapest solar concentrator in the world (Parabolic trough, etc.)
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- Опубликовано: 2 окт 2024
- Its total construction costs are several dollars per square meter
My 3rd RUclips channel: / @cheapsolarheat3630
Now I will show the cause why this solar receiver can produce high temperature heat.
Here we see very cheap primitive mirrors which focus solar radiation on the receiver. Now I show those mirrors, and we see that it is a cheap reflective polymer film. This is the spot of solar radiation from the mirror in the winter, when the sun is low above the horizon. Of course, the focusing has poor quality, but this is not a big problem if we use a wide receiver as on my solar station. Obviously in the spring, the sun height increases, and therefore the spot is located in a different place if we refuse to change the vertical angle of the mirrors.
Here we can observe how the wind worsens the focusing. In addition, we understand that wind can be a problem for the lifespan of our cheap mirrors, and I will describe the solutions to this problem in a few minutes.
So, I made these mirrors from this reflective mylar film which was bought at a price of 20 American cents per square meter from one of the Ukrainian manufacturers. It is about 1000 times cheaper than these mirrors of modern solar power plants.
My idea is to build such long rows of such cheap mirrors. Of course, we need a cheap receiver which will be located in the focus of our mirrors, and I plan to test 2 versions of the receiver. This is the first version, and I described it in one of my old videos about a month ago. The second version of the receiver was described by my 3rd RUclips channel, and its link is below. I remind you that my mirror systems do not need to change their position from morning to evening, and I described their capabilities and features in some of my old videos.
In addition, I plan to explore the second variant of cheap mirror which has this additional cheap polymer film. It is obvious that the additional film helps the mirror withstand strong winds.
However let's look at the first variant of my mirror, without that additional film. We see that the bottom edge of the mirror is not fixed, and the weight of this structure can make the mirror have a minimum of wrinkles.
Now we can understand that the mirror can be easily and quickly removed or installed, and this is important if we plan to use our mirrors for several weeks or months per year, for example, for heating a greenhouse only during March, or for space heating of a house from November to February. In other words, we can remove our mirrors at the end of the heating season, and therefore the lifespan of our short-lived mirrors can reach several seasons.
We understand that these wires provide our mirror the desired shape. Now I show that I used different types of the wires to find the difference between them. But we see that any difference is missing.
I have to do long term research, during which I will wait for the mirror to be destroyed by a strong wind to find its "weak point". For example, this incident helped me find another “weak point” here. This is a new mirror, where that "weak point" is reinforced.
It is obvious that winds must destroy some more of my mirrors so that I can find some more "weak points" and strengthen them. After finishing the research, my third RUclips channel will describe the final version of this type of cheap mirrors which will be able to withstand strong winds.
Of course, we have the opportunity to temporarily remove the mirrors before hurricane, and I remind you that my second version of the mirror has more ability to withstand strong winds.
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Decades ago, all innovation came out of large companies. Now, you are doing things no one has ever done, on your own and in your backyard!
Increasing the number of wires will also increase the strength of the Mylar. Such is shown with rebar in concrete foundations. Your video on using a mesh for a parabolic dish proves this.
It's unfortunate that mylar isn't at all hardwearing, as it is highly reflective and cheap.
Another option may be aluminium roofing tape, which is almost as reflective, self adhesive, and much longer lasting.
But your approach to make the reflectors essentially disposable, given their ease and low cost, isn't unreasonable.
Maybe clad them behind a screen of clear PVC film or similar, in order to protect them from wind and environmental wear and tear?
Don't use greenhouse plastic as it's not completely clear, or kitchen film as it won't survive the UV in sunlight for long.
Could you put something behind the mylar? Then it wouldn't need to b3 uv resistant
You have the best videos!
Hi Sergiy.
is there an online source for the cheap reflective film? cannot find it. keep up the good work. very inspiring. greetings from the Netherlands.
Your work is fantastic. Please keep us all updated.
I just use prepackaged mylar survival blankets. They can be purchased on amazon for around fifty cents each.
link?
Thermal blankets are unfortunately not nearly as reflective as proper hydroponics mylar sheet. They're only a little better than something like aluminium kitchen foil, tho are a bit cheaper and easier to work with.
@@OpenSourceLowTech Would you say it's "good enough" though?
@@williamblair1123 If the person using it says it's good enough, then it's good enough.
Do look into getting some proper hydroponics flat mylar if you can get it tho, it's about the same price and twice as effective. Also doesn't really hold up against an outdoor environment tho unfortunately.
Boa noite sou do Brasil gostei da sua ideia tenho a mesma ideia estou na luta tentando meu sistema solar abraço
Hi, if using fensel linear lens can be last longing.
Mate, where did you get this mylar foil for the price you've mentioned????
i am a big fan of all your videos .. did u try making electricity with all this?
If he want, he can ! But the problem will be the efficiency : less than 5% for a steamengine ...
zeeshan ahmed: First of all, I want to get cheap heat 0.2-0.5 cents / kWh with a temperature of 80-200 degrees Celsius (This goal has not yet been achieved).
@@sergiyyurko8668 This is fantastic work that you have been doing. If the mylar is only lasting a few weeks does stainless steel end up being cheaper?
Can you get a much higher heat with a larger Parabolic trough?
I'm envisioning a bigger mirror heating oil filled pipes and driving peltiers for electricity.
Thanks for doing the video in english
Would be interesting to see how much food could be grown in the equevalent space this takes up.
How big would it need to be in order to heat an aqauponics system in a cold climate (tilapia) nice video brilliant
Very cool!
But i think is not long lasting. You can make a coating layer with Nickel Anode this shines like mirror or this is mirror
Nickel reflect less than 60% of visible light !
www.quora.com/Which-materials-reflects-the-widest-spectrum-of-light-can-be-coated-to-a-curved-surface-and-is-also-easily-available
This is a reflective film am a right
Mylar.
jak się nazywa ta folia?
I like it when the preview pic is censored 😳