Spay, paint, rise, or dunk a heavy material on the backside of the mirror and let gravity form the parabolic shape. The material on the back could be clay, cement, epoxy or some glue. If the backside coating is not enough to form the shape, you could temporarily fill the front with water or push it with a temporary shape while the back is drying.
That's a really nice system and the way it was done for real work looks excellent! Beautiful how something so useful doesn't have to be complicated. Even the motionless mirrors to catch the moving sunlight is really smart.
I think that some kind of glue or resin between the reflective film and the cheap strong film could increase it's lifespan significantly. It might be less reflective, by having lots of cracks and small tears, but it would still reflect light as intended, just less of it. One example would be using diluted resin, another would be using a boiled-flour paste diluted in hot water (since at lower temperatures it becomes more like a glue). I'm looking forward to see if you used glue like that, and how much longer-lasting (how much more long-lasting) the reflective panels have become.
Sergiy, you need a big piece of plastic like a circle, heat it up and press it into the parabolic mirror shape, spray glue on it, and vacuum your mirror surface down onto it, then, mount the whole thing in a wood frame.
Creating a deeper mirror frame and adding a back would allow you to create a parabolic mirror just by reducing the pressure inside the frame. Also you could make a simpler frame by cutting some thin plywood into 6" strips and bending them in a circle.
@@iainsear7830 I think the spray-on reflective coating would cost more, but it depends on how cheap you can get the spray-on mirror, compared to using reflective films already existing on the market. You could even use that strong reflective coating with mixture of epoxy which is slightly flexible when fully cured, so you can curve the panels on a form/mold with that cheap strong film on their back, and then use a metal or even wood frame to hold them in place. You might need to drill small holes in the material, to make it more resistant against strong winds (by not acting like a sail), but you won't need so enough holes to significantly lower the effectiveness of the panels. Also, for storage, there are sand-and-soil mixtures which together have a low-enough thermal expansion that they would be preferred instead of normal sand, for storage. Even just using terracotta or compressed dirt (aka. "rammed earth", or "rammed dirt") would be an improvement over not having any way to store the excess heat, for solar through concentrator power-plants, because many don't have thermal storage for the middle of the day, when they produce the most energy and when the least energy is needed. Sure, setting up the plumbing with all the right loops might be more expensive for power-plants than not having them, but it would allow them to generate power from the stored heat, especially on cloudy weeks.
It might be reasonable to make an inexpensive solar tracking system. I have some similar ideas, but weather is a killer. A mirror that could automatically fold up if weather reports are unfavorable, but then deploy again once conditions improve. A remote program would send appropriate commands.
Very thought provoking: remembering that cooking oil generally boils at about 300 degC; but could be circulated through an insulated tank (with a safety valve or safe weak spot pointed at dirt) perhaps some cooking could be done in a pot of water, neatly fitted in the top of the oil tub; with the insulated lid over both; including at night? For me generating electricity would be a low priority - I'm happy with a solar PV panel for that purpose. But your reflector construction ideas set me thinking of crude small animal houses which I have made in the past, for dragging around on grass (to spread the manure, and minimise wreckage of grass, and compaction of soil (particularly with goats, but chickens too). Now I imagine someone making such easily shifted huts with one adjustable sloping wall, featuring a reflector like one of your prototypes. A little more expense could justified if it houses chickens - just thinking; would share some photos if I setup some chickens again! Thanks for sharing! Respect - for your experiments with such economical techniques. I'm Australian, and I'm guessing those prices are US $, But very interesting. Thanks
Sergiy Could you use many small flat mirrors that you could pivot to focus like the alignment in the James web space telescope? Your sections would be flat and without wrinkles. They could be mounted on a flat surface with a single ball and socket clamp in the center of each cell and gaps between would not cause much loss of efficiency. You could remove and maintain individual cells without loosing the panel production.
Серж, это ахуенно! Надо собирать секции таких нагревателей. По идее можно собрать несложные сервоприводы которые будут исходя из координат местности направлять панели в сторону солнца... А еще твой подход удобен тем что можно периодически прокручивать зеркало через чистящий раствор.
Sergio Excellent examples of what can be done. Like another said: green power science, Mike Rojas I think is his name. He made a stand up frame 4 by 4 with clear plastic. If you make that and put your perobolic mirror at an angle below that it will bounce the light to your "reciver heating unit". Advantages are: 1. It will collect more light per square foot. 2. The above unit of clear plastic and water to make a perobolic dish is stationary but collects light from all directions. 3. You bounce the light from 2. To your reflector to the collector. Results are more BTU to collector cheap.
What if you combined it with a sand battery. You could use it during the summer to head a sand battery big enough to heat your house during the winter.
I'm looking to build something like this to heat steel box fitted with a cpu radiator inside. 4" duct fittings on both sides to heat air. My passive solar furnace heats up nice, but not as hot as I want it to. Currently pumping in 140f heat on a sunny day all on solar power
If you take a steel threaded pipe and cap one end and put three cups of water into it then put at threaded cap on the Open end very loosely and heat till steam blows out for a minute then screw it close tight you have a heat diode !.just heat one end into the solar hot point then tilt the other end up it will move hot heat at 99deg Celsius to the other end up to 60 ft just insolate the pipe to not loose heat then make a hole in house and put it into house .if your solar focused pipe end is south it can follow the sun . Cheap simple .safe house heater and .....cooker.... 😃!!!
Thks but maybe a little better: Rigid chicken wire pressed into the parabolic shape with a thicker perimeter/circumference wire Make a pair & just sandwich the reflective film between them
I was gonna use a car radiator and make a box that is insulated to hold it and paint it with the worlds blackest paint and see what temps I can get. They throw radiators away quite a bit at body shops. Just haven’t been able to do it yet
Hello Sergiy. Keep learning. While I din´t know much about solar heat, and I dont know, what Your goals are, I can tell, that I have heard also wind energy. If You need water to been pumped, that is viable solution. Also by combining sun and wind, one might be able to make heatpump
Sergiy are you in the Ukraine and if so how are you doing? Are you and your family safe? Hopefully, you will answer No and Yes / Doing just fine thanks. Thanks for sharing the the fab videos, full of very useful info.
What are your clear plastic sheet material? Like Turkey or Oven Bag? I was thinking for your metal fence material.... modeling the squares so the focal point is in the pattern you desire. Then, design that in wood or ideally metal if you can find in a tool and die so you can more mass produce to stamp multiple times the fence material pattern. Try cheap oven bags maybe for the temp resistance maybe? I know that is what is used with other solar oven designs... not certain about at a focal point. Really nice design and thoughts! Thanks for sharing.
Sergiy, Very interesting video. Thank you! May I ask a novice’s question? If a curved mirror was focused onto a solar panel that creates electricity (not to heat air, water or oil), would the ‘standard’ solar panel be more efficient? Or would it make no difference - would we simply need more solar panels or better solar panels? Thank you 🙏🏼
solar panels get less efficient at higher temp; they work best at low temp. Only a small part of the sunlight is converted into electricity and the rest goes into heating the solar panel.
I have read that mylar becomes brittle in cold weather. I'm not sure that it is economical to apply mirroring spray compounds or sealants to plastic media. A viable, high-temperature powder coat would likely possess high silicone content, or be mineral based. We'd probably need to go by the mineral streak color for the powder, and the temperature for melting or bonding to the substrate, or perhaps it would need a weather resistant binding agent anyhow. Magnetite is usually used for black oxide coatings via anodizing. Perhaps sacrificial metal wool would work for long enough to be economical.
How did you get the wires at the right shape? does it seem to protect the film from the wind better? I search for this type of information every few months. This is one of the simplest design I have seen in a while.
Hi Sir! What if you bent the wire or made the battens, so the Mylar formed a Fresnel lens, would that help? Did your receiver have baffles inside, and what metal is it made of and what gauge? I hope to experiment following your lead. Is copper tube ok for a receiver? is a plate-copper, soldered-receiver similar in shape to yours there a good way to go? Thank you for helping mankind! If you could do some sharing on your results and designs on receivers, and tempered glass tips, or PC or other glazing tips, all that would save so much time! Thank you!
Has anyone tryed to seal the mylar like polyurethane or clear acrylic? Or perhaps rubber coat the back, something to hold its shape better, use the frame as a mold to make many of them.
Hello from Sweden! How did you manage to shape the net into a parabola ? Have thought of this since I saw your video but cant really think of a good way to do it... Thanks for sharing 👍 Very appreciated!
If you cut the mesh slightly larger than the frame it will naturally create a parabolic shape when you push it inside the frame. Make sure you have a good amount of wire extending from the mesh which will make it easier to fit inside your frame. You'll probably need to stand on it. Hope that helps. Good luck
Great idea! Maybe you could try glueing the mylar blanket to an old parabolic dish. Another idea is to build a custom parabolic with fiberglass for example. Check out this process: ua-cam.com/video/8CLRTa_ocmo/v-deo.html
I think fiberglass would be too expensive. Maybe a few metal wires and a slightly-flexible resin mixture (so it flexes a bit, instead of cracking) in-between the cheap strong film and the reflective film, as well as letting that cure in a mold, then drilling (and sealing with resin) a few holes so the panel doesn't act like a sail, and using a cheaper frame, would lower the price even more, by increasing the life-time of the reflective film to offset the cost of materials and work needed to process the materials (the gluing and molding, for the most part).
Spay, paint, rise, or dunk a heavy material on the backside of the mirror and let gravity form the parabolic shape. The material on the back could be clay, cement, epoxy or some glue. If the backside coating is not enough to form the shape, you could temporarily fill the front with water or push it with a temporary shape while the back is drying.
I might try the water idea and use fiberglass to form it! thanks
That's the first thing I thought!
This is not a parabola, it's a catenary, though a mighty good approximation.
yes! Like Epoxy!
@@kayakMike1000 It would be smoother though, so even if the shape isn't perfect it would still scatter less light than this one
Good idea to reduce cost to below natural gas. Looking forward to a video describing the design of the receiver and the source of the components.
That's a really nice system and the way it was done for real work looks excellent! Beautiful how something so useful doesn't have to be complicated. Even the motionless mirrors to catch the moving sunlight is really smart.
Keep this stuff coming. I enjoy ideas like this
I think that some kind of glue or resin between the reflective film and the cheap strong film could increase it's lifespan significantly. It might be less reflective, by having lots of cracks and small tears, but it would still reflect light as intended, just less of it. One example would be using diluted resin, another would be using a boiled-flour paste diluted in hot water (since at lower temperatures it becomes more like a glue). I'm looking forward to see if you used glue like that, and how much longer-lasting (how much more long-lasting) the reflective panels have become.
Very interesting
Same design in a trough my be a GREAT primary heat system for a second tracker system
Love 💘 the results
Keep on GOING 🌄🗽🌅🎇
Built a parabola out of cardboard and aluminum foil on 1968. Cooked hamburgers on a steel pan.
Sergiy, you need a big piece of plastic like a circle, heat it up and press it into the parabolic mirror shape, spray glue on it, and vacuum your mirror surface down onto it, then, mount the whole thing in a wood frame.
Creating a deeper mirror frame and adding a back would allow you to create a parabolic mirror just by reducing the pressure inside the frame. Also you could make a simpler frame by cutting some thin plywood into 6" strips and bending them in a circle.
@@iainsear7830 I think the spray-on reflective coating would cost more, but it depends on how cheap you can get the spray-on mirror, compared to using reflective films already existing on the market. You could even use that strong reflective coating with mixture of epoxy which is slightly flexible when fully cured, so you can curve the panels on a form/mold with that cheap strong film on their back, and then use a metal or even wood frame to hold them in place. You might need to drill small holes in the material, to make it more resistant against strong winds (by not acting like a sail), but you won't need so enough holes to significantly lower the effectiveness of the panels.
Also, for storage, there are sand-and-soil mixtures which together have a low-enough thermal expansion that they would be preferred instead of normal sand, for storage. Even just using terracotta or compressed dirt (aka. "rammed earth", or "rammed dirt") would be an improvement over not having any way to store the excess heat, for solar through concentrator power-plants, because many don't have thermal storage for the middle of the day, when they produce the most energy and when the least energy is needed. Sure, setting up the plumbing with all the right loops might be more expensive for power-plants than not having them, but it would allow them to generate power from the stored heat, especially on cloudy weeks.
It might be reasonable to make an inexpensive solar tracking system. I have some similar ideas, but weather is a killer. A mirror that could automatically fold up if weather reports are unfavorable, but then deploy again once conditions improve. A remote program would send appropriate commands.
I was thinking a trough type, where the mylar could be rolled up like a sail, when inclement weather is immminent...
Such technology has already been used before in Morocco solar projects . Noor 1,2,3
I recommend you to use a Fresnel lents the are cheap and focalice the light, and great vídeo :D
Would it stand the heat?
A Fresnel Lens would cost far more than a mylar and wire Parabolic curve
You have re-invented the wheel!
great cannel, thanks for your developments from austria
Very thought provoking: remembering that cooking oil generally boils at about 300 degC; but could be circulated through an insulated tank (with a safety valve or safe weak spot pointed at dirt) perhaps some cooking could be done in a pot of water, neatly fitted in the top of the oil tub; with the insulated lid over both; including at night? For me generating electricity would be a low priority - I'm happy with a solar PV panel for that purpose. But your reflector construction ideas set me thinking of crude small animal houses which I have made in the past, for dragging around on grass (to spread the manure, and minimise wreckage of grass, and compaction of soil (particularly with goats, but chickens too). Now I imagine someone making such easily shifted huts with one adjustable sloping wall, featuring a reflector like one of your prototypes. A little more expense could justified if it houses chickens - just thinking; would share some photos if I setup some chickens again! Thanks for sharing!
Respect - for your experiments with such economical techniques. I'm Australian, and I'm guessing those prices are US $, But very interesting. Thanks
О, давненько не було нових відео на Вашому каналі, шановний! Подякував. 👍
I hope you’re safe!
an old larges sattelite dish works very well, silvered up
Sergiy
Could you use many small flat mirrors that you could pivot to focus like the alignment in the James web space telescope? Your sections would be flat and without wrinkles. They could be mounted on a flat surface with a single ball and socket clamp in the center of each cell and gaps between would not cause much loss of efficiency. You could remove and maintain individual cells without loosing the panel production.
Wery Nice, how about 3d printed mirrors?
Nice good job, continue the good work, from Morocco, we have plenty of cheap solar here .
ingenious
Серж, это ахуенно! Надо собирать секции таких нагревателей. По идее можно собрать несложные сервоприводы которые будут исходя из координат местности направлять панели в сторону солнца... А еще твой подход удобен тем что можно периодически прокручивать зеркало через чистящий раствор.
Good working .. I wish to meet you in ukrania in near future ... best wishes from Egypt
You could use a Sterling engine as a receiver, they are quite cheap and of low maintenance, but perfect for electricity generation.
Sergio
Excellent examples of what can be done.
Like another said: green power science, Mike Rojas I think is his name.
He made a stand up frame 4 by 4 with clear plastic.
If you make that and put your perobolic mirror at an angle below that it will bounce the light to your "reciver heating unit".
Advantages are:
1. It will collect more light per square foot.
2. The above unit of clear plastic and water to make a perobolic dish is stationary but collects light from all directions.
3. You bounce the light from 2. To your reflector to the collector.
Results are more BTU to collector cheap.
Great! How did you make parabolic mesh? Thanks!
You could use multiple light sensors and a 8266 or esp32 or even an arduino or attiny chips to activate motors to move it at whatever you set it for.
What if you combined it with a sand battery. You could use it during the summer to head a sand battery big enough to heat your house during the winter.
I'm looking to build something like this to heat steel box fitted with a cpu radiator inside. 4" duct fittings on both sides to heat air. My passive solar furnace heats up nice, but not as hot as I want it to. Currently pumping in 140f heat on a sunny day all on solar power
Nice information solar energy
If you take a steel threaded pipe and cap one end and put three cups of water into it then put at threaded cap on the Open end very loosely and heat till steam blows out for a minute then screw it close tight you have a heat diode !.just heat one end into the solar hot point then tilt the other end up it will move hot heat at 99deg Celsius to the other end up to 60 ft just insolate the pipe to not loose heat then make a hole in house and put it into house .if your solar focused pipe end is south it can follow the sun . Cheap simple .safe house heater and .....cooker.... 😃!!!
Mylar one side rigid panel back side, slight vacuum, real parabolic arc.
Damn I love science.
You Sir are a legend...
Great stuff. Be safe over there))
Very cool and informative video !
Круто.
Продовжуйте.
Успіхів вам.
good job and thank you
Most of the cost of producing electricity comes from the generator, not the water boiling but still very impressive.
Great work!
Thks but maybe a little better:
Rigid chicken wire pressed into the parabolic shape with a thicker perimeter/circumference wire
Make a pair & just sandwich the reflective film between them
Красавчик, ещё и англоязычный канал сделал.
Nice nice good Work very Good
Experiment with mylar thermal Space Blankets, several have mirror finishes and offer a thicker material
I was gonna use a car radiator and make a box that is insulated to hold it and paint it with the worlds blackest paint and see what temps I can get. They throw radiators away quite a bit at body shops. Just haven’t been able to do it yet
Martian Entreprenuer need to wrap his head around this
Add tesla turbine to the steam output and produce electricity;)
Hello Sergiy. Keep learning. While I din´t know much about solar heat, and I dont know, what Your goals are, I can tell, that I have heard also wind energy. If You need water to been pumped, that is viable solution. Also by combining sun and wind, one might be able to make heatpump
I am going to build your design thanks for the input
Subscribed keep up the good work
Excellently effort ...iam beginer solar power electric.....your thoughts and voice majestic .......
What if you it inside a greenhouse to increase the water temperature and protect it from wind, hail and snow?
I woder if the system can produce any energy in a cloudy weather
Inteligent....
If aluminum foil is used as a mirror to reflect sunlight onto traditional photovoltaic panels, will those panels increase their power output?
Sergiy are you in the Ukraine and if so how are you doing? Are you and your family safe? Hopefully, you will answer No and Yes / Doing just fine thanks. Thanks for sharing the the fab videos, full of very useful info.
What are your clear plastic sheet material? Like Turkey or Oven Bag? I was thinking for your metal fence material.... modeling the squares so the focal point is in the pattern you desire. Then, design that in wood or ideally metal if you can find in a tool and die so you can more mass produce to stamp multiple times the fence material pattern. Try cheap oven bags maybe for the temp resistance maybe? I know that is what is used with other solar oven designs... not certain about at a focal point. Really nice design and thoughts! Thanks for sharing.
Hello ,
Can you review the calculated cost?
For me it gives me 0.005$/KWh
Or am I doing something wrong?
Thank's
Brillant. Where does one get the foil so cheap ?
You can make a million of this and create your free energy to the world 🌏🕊️ 🤓
Thus they will cost 500usd each :))))
I think you have a great System, but how about my house, where like many others is not sunny half of the year? I will try it out however!
Light has some wavelengths which help us see things and some wavelengths you can't see (IR) which bring heat.
Great discovery. Start marketing
Top👌
How thin can stainless steel get? Maybe it would last several years and still be better than 1.25USD/year of replacement.
I wold polish aluminum
durability? tracking system is anyway required, or by hand, or it will only work minutes per day
Sergiy,
Very interesting video. Thank you!
May I ask a novice’s question? If a curved mirror was focused onto a solar panel that creates electricity (not to heat air, water or oil), would the ‘standard’ solar panel be more efficient?
Or would it make no difference - would we simply need more solar panels or better solar panels?
Thank you 🙏🏼
solar panel captures %8 mirror is 100% then yes
solar panels get less efficient at higher temp; they work best at low temp. Only a small part of the sunlight is converted into electricity and the rest goes into heating the solar panel.
@@janami-dharmam This might be more feasible with a water-cooled panel.
Do you think this could boil water in winter?
He'll yeah, just need insulation
4:45 coating ? Silicon nitride Si3N4 (75nm layer) thermodynamic coating (Anti Reflection Coating) (Light Trapping) ?
maybe store the heat directly to sand based heat storage?
Это твой новый канал. Поздравляю
Hello Sergiy, Would it be possible to meet you sometime? I like in Kyiv.
I have read that mylar becomes brittle in cold weather. I'm not sure that it is economical to apply mirroring spray compounds or sealants to plastic media.
A viable, high-temperature powder coat would likely possess high silicone content, or be mineral based. We'd probably need to go by the mineral streak color for the powder, and the temperature for melting or bonding to the substrate, or perhaps it would need a weather resistant binding agent anyhow. Magnetite is usually used for black oxide coatings via anodizing. Perhaps sacrificial metal wool would work for long enough to be economical.
How did you get the wires at the right shape? does it seem to protect the film from the wind better? I search for this type of information every few months. This is one of the simplest design I have seen in a while.
any plug and play small steam generator available for off grid users?
Hi Sir! What if you bent the wire or made the battens, so the Mylar formed a Fresnel lens, would that help? Did your receiver have baffles inside, and what metal is it made of and what gauge? I hope to experiment following your lead. Is copper tube ok for a receiver? is a plate-copper, soldered-receiver similar in shape to yours there a good way to go? Thank you for helping mankind!
If you could do some sharing on your results and designs on receivers, and tempered glass tips, or PC or other glazing tips, all that would save so much time! Thank you!
But wouldn't s straight parabolic mirror be a better solution ? So instead of only the boiler you can use several U shaped Tube boiler
genius
Even cheaper old big screen tvs see them.out by curb that screen is a giant magnifying lens frame it
I think its possible for a cheap method to follow the sun, check it out
It must tilt up so water can run back down to heat
How it works in night.
don't forget that gas can be made from natural sources
Its look like a cyberpunk: high technology & low life
Has anyone tryed to seal the mylar like polyurethane or clear acrylic? Or perhaps rubber coat the back, something to hold its shape better, use the frame as a mold to make many of them.
Hello from Sweden!
How did you manage to shape the net into a parabola ?
Have thought of this since I saw your video but cant really think of a good way to do it...
Thanks for sharing 👍
Very appreciated!
I believe the "net" is actually coated metal fencing deformed into the desired shape.. He describes this at some point in the video.
If you cut the mesh slightly larger than the frame it will naturally create a parabolic shape when you push it inside the frame. Make sure you have a good amount of wire extending from the mesh which will make it easier to fit inside your frame. You'll probably need to stand on it.
Hope that helps. Good luck
If you build a heat absorber as big as your mirror ?
Est il possible de l avoir en français ?
Can this be used to run a turbine?
How to make it
Класс👍👍👍
👍
How this gonna work at winter?
Sun is out in winter, just need toinsulate
Sry i can’t help but thinking Microsoft Sam actually created something
А если ветер?
☀️👍🥂🎩
Sir which meterial you use for reflection.please mentioned it in Amazon address.it very necessary for me.thank you.
Great idea! Maybe you could try glueing the mylar blanket to an old parabolic dish. Another idea is to build a custom parabolic with fiberglass for example. Check out this process: ua-cam.com/video/8CLRTa_ocmo/v-deo.html
I think fiberglass would be too expensive. Maybe a few metal wires and a slightly-flexible resin mixture (so it flexes a bit, instead of cracking) in-between the cheap strong film and the reflective film, as well as letting that cure in a mold, then drilling (and sealing with resin) a few holes so the panel doesn't act like a sail, and using a cheaper frame, would lower the price even more, by increasing the life-time of the reflective film to offset the cost of materials and work needed to process the materials (the gluing and molding, for the most part).
If you place this mirror on plastic board it's life should be longer thin plastic stick with glue😁
PM me if you need place to stay :(