Solar Thermal Heat panel 210 degrees of free heat!
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- Опубліковано 6 сер 2024
- Just a quick video showing a 1st generation prototype for building thermal heating panels from recycled materials. not to shabby for under $150 bucks! Thanks for watching
Next time insulate the back and sides with foam board insulation then some foil faced foam board. Spray the interior black before installing downspout pipes, then seal it. Use a smaller fan. Like a PC fan at the bottom and the top. Higher heat production and more efficient air flow. Also, you can get a small solar panel to directly power the fans. That's real savings.
Increase air flow limit temperature gain to about 80 degree f. Highest home heating efficiency is obtained this way. You reradiate to much heat from the collector. Stripping the heat from the collector quickly means more heat in the home.
Nice build and video.
too
@@kronk358 magnificent comment . Grammar Nazi will sign their own death warrant asking as the grammar and spelling were up to snuff.
Would it equal a 1500watt heater?
13 years on and still helping people! I bet you'd forgotten you'd done this! Have you refined it since? Good job and thanks very much 🙂
Yup, I mastered the heat panel and sold my company to a large manufacturer, doing well. Trial and error and persistent attitude pays off!
Where can I buy a ready unit. Need one in Kenya
do that thermal colector when is cold outside and winter to see if is functioning
I did a similar thing to get AC in the winter. Works great, I get about -10F out of the system, it's very efficient.
I see what you did 😁
😂😂😂
If only u could of got -20F damn be safe
Turn the wood blade around ( backwards) on the saw. It works well to cut thin sheet metal.
Nice job ! We have to teach the next generation what we know- great video!
Well I like it. Perfect for a 3 season cabin set up in the MN north woods.
this is awesome video, very interesting and this will be an awesome project for this summer..
we have over 20 videos on here showing these heat panels in all types of weather, take a few minutes to watch those as well. We have several models that put out 150-180 degrees all day on 10 degree days.
I was thinking the same thing about using downspout and forget about the beer or soda can. But instead of wood blocks to seal the end, using two downspout 90 connectors or a gutter. Thanks. Excellent video
Have you tried 2" foam insulation panels to make your end plugs? Inexpensive and you could make a "cookie" cutter out of a scrap of your downspout. Might want to use your hand held grinder to sharpen the edges up a bit, should work a treat though.
awesome... i'm going to try this one too.. cant wait... thanks so much for sharing this video..
I've seen several of these from colder climates (in the 40-50 degree range) that will put out quite a bit of heat. However, I would want to use larger tubes for better air flow and a diverter to not overheat the house in the summer. Cool step by step though.
Hey guys if you want something that works better in the winter time for air circulation consider this. Try placing your unit near a window and then take a 2x6 or a little thicker and add insulation around it to aid in prevention of heat loss and add 2-3 small lines that run into the box at the bottom and from the top a larger one that goes into the house through the wood board in the window have the fan blow air from inside the house so you are taking warmer air than outside temps to circulate in your house
Which is also the principle of a heat pump, except that it gets air from under ground which usually is lots warmer than outside air.
this is an excellent idea i am going to test the project for myself thank you
I love what Rich does, he is an inspiration. I must stay more main streamed though and stick with what will pass UL and other testing as I am looking to mass produce this year. His ideas are coupled with mine in all the same aspects, its almost spooky how great minds think alike! Lets keep up the great research guys, we are the ones changing the world and shaping what happens next!!
Um. This comment was posted 10 years ago. Are you mass producing them? Can I buy one from you?
@@TheKSProduction at the end of the video he has a number to call; the price was $900 (a decade ago)
More air flow may lower the exhaust temperature, but it is thermally more efficient at capturing solar energy as it heats more air. High temperatures with slower moving air are neat, but you loose more energy to the outside air through radiation and convention loses that essentially increase exponentially as temperatures increase above ambient.
You did Good!!! Good luck on your business, Peace and Blessings, Yvoone
Windandsun.com
This is awesome.. great heating panels..
Exactly the same thing I was thinking, awesome!
well done we need more of this
It's AIR you're heating guys!. Your metal downspouts, conduit nipples and similar hardware are way stronger (read expensive) than needed to channel the flow of warm air. Laminar flow off the front surface of black painted corrugated paper would work better. Also absolute temperature matters less than BTUs. The volume of air X temperature increase yields a more meaningful number, that's a measure of how much ENERGY is being colected. And your arduous overbuilt construction causes you ask 900.00 a pop for this baby bottle warmer?
Sounds right to me: you could build it with corrugated cardboard at the rear, corrugated translucent paneling in front to collect and hold the heat in, and just simple piping at one end of the thing, pushed by a pump. There is even a design on UA-cam where the airflow on a similar device is created just by the fact that hot air rises. (convection) It could flow out the top into the room to be heated, and circulate while cool air from below would come back into the heater.
how long is paper going to last when exposed to oxygen and high heat? 100 years? Tell me how long your materials last, please.
When I build it, I'll tell you. With minimal prep, paper will outlive the house that the panel would be attached to.
bodryn I'm thinking the cardboard would be enclosed in a box that's insulated on the back and sides. I would also think that clear glazing vs translucent would make the cardboard hotter because of the scattering effect of the translucent material. Of course cost/performance should rule here but there is some very clear corrugated stuff at the home depot. A heat loss path through the glazing would be minimized by encouraging non-turbulent laminar flow over the cardboard. That would be done by carefully introducing the cool air into the bottom of the panel. With laminar flow, the hot air rising from the cardboard would be not have time to reach the glazing before the air gets ducted out at the top of the panel. That would eliminate the need for double/triple glazing by minimizing the heat loss through the front. The laminar flow characteristic will be a function of the slope and height of the panel. Some "cut and try" builds and performance measurements would be needed to optimize the design.
***** That all sounds good to me.
I built a similar device abut 6 years ago using tempered glass (too expensive). I was able to get 235f, but at a lower volume of air. I also use a 155f thermal switch, solar panel and fan.
I first tried the soda can design and was not happy with the build process. Rain gutter is the way to go. Wish I had seen this video first as I would have saved a ton by using the shower door.
Good video heres a tip if you will turn that wood blade over backwards to where its running backwards it will cut that thin metal and won't leave those bers like the metal blade did .the kit is a little pricey though most people looking to install something like that probably can't afford it. I would seriously consider looking at different materials that downspout material has got to be expensive. Great idea though I wouldn't have thought you would have gotten that kind of temp. Off of a unit like that.
cool, love the def ... also!
Easy answer to the blank ends, is to cut alternative slots in the end of the tubes and make them flush to the frame, maybe a little filler of some kind just to make a seal. The air will flow up the tube, across to the adjacent tube and down again to the next adjacent tube bottom. A solar powered computer fan win blow the air into the house. Any savings are lost when you add a non solar powered fan.
I am now starting to build a solar heater, and I cant wait to enjoy hot water in winter...
@321ozzy
thank you. solar heat panels are some of the most efficent uses of solar there is.
Great video and the music rocks! Ignore the haters. Thanks for sharing.
Cool video. The sun bring lower in the sky in the first part was actually beneficial to higher temps. You want to be as close to perpendicular to the sun as possible!
thank you for your comments. It is just a side hobby and able to be built for pennys. Please keep watching and thanks for the support.
what was outside temps for each test, im curious to know what 30/40s outside temps could get a solar heater like this to achieve.
South side of my two story is going to get the side covered like this. Was wondering what material to use. Had thought about the wavy shingle board stuff at Menards but that could smell. Won't need plywood backer. Maybe foil wrap to reflect summer heat. I have shade for summer on west and east ends of house.
We are presently testing various metals and materials in similar designs, but our location is Canada, so variables in outside input air temps vary greatly on end results. Our design idea is to take consistent indoor air flowing through. Your video shows outside air, but at what temperature? That will change you results. Would be interesting to see a string of various air temps going in with a data list of resulting outlet temperatures with your system.
you can tell his in a warm/hot climate wearing shorts and a thin T-shirt, so no wonder he got that kind of Temp from it. This is a joke to me.
That's great in the summer how does it work when it's 20 degrees out
Thanks for the vid! Awesome work! Does it need direct sunlight to work?
Great video. Thank you.
Cool video, the only thing I can suggest is for the people swapping the blades out on the saws. PLEASE MAKE SURE you get the right disc rated at the right RPM for your saw. Not all discs are the same. Everyone have a good one.
Lol I was thinking the same thing
You could use polystyrene (heat rated) for the end caps. You could use CPVC for the connecting tube instead of expensive and heavy steel. I just wonder if airflow across the membrane would allow for a significant temperature rise?
this was just a test panel, but the units we sell and install have a snap disc in line on the power wire that will only allow connection (blower to spin) when the panel temp reaches 90 degrees. It also shuts off the blower at 90 degrees as the sun goes down
Fascinating idea although I would not use glue as once that unit got hot enough the
Glue may melt then you would be breathing glue fumes...
Great vid going to use this to heat my home hope it works in the winter lol
I've been working in solar thermal, and related thermodynamics and heat transfer since engineering school (1980). Though one can build very simple solar thermal collectors with Home Depot materials, they won't perform nearly as well as a well designed and properly fabricated one. Though the data presented in the video doesn't really give us much of an idea of the performance of the collector (we don't know the outside air temperature, the solar insolation level, the sun angle vs the collector orientation, or the air flow rate, so we have no idea of how much energy is actually being collected) we can very roughly guess that the max temperature differential for this collector (the maximum difference between the collector temp and outside air temp, where heat production is zero) is about 90degrees F or about 50 C. A decent commercial flat plate collector, made with proper materials (able to withstand maximum temps, years of UV light exposure, selective emissivity coating on absorber etc) will reach 100 Celsius over ambient at zero output. In the case of this video we would expect to see a max temp of 330F not 210F.
While a max temp of 210 may seem impressive and useful you need to keep in mind that this was only 90f hotter than the outside temp. Consider what would happen on a zero degree day in winter, where you need a minimum of about 90f temp above ambient to provide useful heat to the home. (you can't heat your home with air that is at the same temperature as inside the home, it must be somewhat hotter, which is why the air coming out of your heating ducts is substantially warmer than your home). The system presented would provide roughly zero heat on a zero degree day, at solar noon, if it was properly oriented at latitude +15 from horizontal. If the orientation was less than this, or there was any clouds or haze, or if it was earlier or later than noon, the collector would actually pull heat out of the house.
A good quality, properly insulated collector, with a selective emissivity coated absorber and low iron glass cover (better still double glazed with a layer of fep inside) would provide significant heat on a 0f day, in winter sun, even with some haze.
+strato man yeah, but it only cost him 150 bucks... I've watched a lot of videos on these... and although they might not perform as well as a commercial unit... they perform pretty damn well and can be a pretty good and cheap way of adding heat to your home... especially if you use recycled materials and a cheap temp controller device to cut the fan on and off. I live in the south... and our average low is only 32 degrees.... For a small well insulated home like mine this type of thing could be a great DIY supplemental tie in to my central air.
+Jared Cox You can purchase a decent selective coated, low iron glass, 2 sq meter panel from China for about $120. Such a panel will be rated to take water or propylene glycol at 8bar 120psi, and will heat that liquid to 90c over ambient and will last a couple of decades.
Well, that's true.. but that would require a water heat tank, heat exchanger, pressure relief tank, pump, lot's of piping, valves, and expensive controllers vs a 10 dollar one I could use for this system. I could take this type of system and pull air from my central air return in the winter... blow it through a solar air heater like this using a cheap low watt fan (using recycled materials) and feed my central air duct on the other side of the heating element to deliver heat to my small home... if it didn't provide enough heat the existing HVAC system would supplement it. And it would last decades as well as long as the box was built out of good material and sealed well.
you do seem to have a good bit of knowledge in the area... so i am interested in hearing what your best cheapest solution is for solar heating air and water for your home.. that also integrates with an existing normal unit (HVAC or typical hot water heater)
+strato man
couple decades cuckhold shmecklegaze.
if it doesn't last 150 years with minimal DIY maintenance, then it isn't worth building.
Obviously you're knowledgeable. Tell us about a GOOD system, please :)
if you were to permanently mount this to a roof would you have to worry about overheating in the summer when you are not running the fan?
very cool i found downspouts and pop cans work good im sending you my video
great Video , Its almost actually what I had planned. Huh rah .. The down spouts was the same idea I have..
I would appreciate if you would tell us the CFM rating of the blower, and also what the ambient air temperature was. That would give a mass flow rate - more or less - and a delta T so we could determine exactly how many BTU the collector delivered.
I'll not worry about de-rating the blower because of the collector's static resistance; you mentioned you were overdriving it at 18v, which I think should be sufficient to approximate the actual rated output at the downstream end of the collector, in spite of the resistance.
thank you for posting this video.
i always think things like this should also be done in winter, true cold winter clime to see what heat can be generated
Hi, I'm looking at making a solar hot air box and I need your expertise advice, would using onduline bitumen corrugated sheeting be OK to use?
Ad block is blocking 196 things on your page. I think that's a new record for me!
awesome video
all of these look really cool but for those of us in places like central Calif .I don't see them working here. Don't need heat in the summer high 90's mid 60s and in the winter was can go 4 or 5 with out any sun (fog)
I'm just guessing but I suspect from your year round temperature average, you could probably tap decent heat from underground. (heat pump) You should inquire locally about heat pumps and see what percentage of heating fuel could be saved there.
Have you considered placing empty soda cans in the drain spout upside down to help capture and hold heat? Also, do you think all outlets can be placed at the bottom of your panel to allow the heat to build up until it is forced to vent out the bottom at floor level? Just some thoughts.
This looks like a neat idea, but I wonder what the heat you would achieve would be (compared to 210 deg) on a winter day when you really need that heat. seems like the idea has potential, but just wondering what kind of heat you got out of it from a weaker winter sun and how much space you've been able to heat with it?
What happens in say Feb when its 10 degrees and you want your house set at 70?? kinda confused, all these videos are in the heart of summer with no mention of how it works in cold....like when you need it.
I made one of these using a simple plastic vapour barrier over the front of a 4 foot by 6 foot wood box. The back was insulated the sides were not. On a cold -20 Celsius , or -4 Fahrenheit day in northern Ontario, as long as it WAS sunny the thing made heat!! Passive room temperature air 22 Celsius air moved into the box and a cpu fan moved air back into a small duct into the house at 80 Celsius. One issue was dwell time, air moved into the box needed time to warm up, the faster you moved the air the less time it had to heat.
jay herne yes I want to make one and rig the fan to a timer allowing it to run for ten minutes and off for 40 I think it would be more efficieint with a slow running computer fan
yeah ,allows time for the air to heat up, best setup would be a thermostat in the heater box itself.
Good, fair question. I agree that many of these units are very small compared to the need. You can light a candle in a room, and it is hot, but there is no way it will raise the temp in the room. These solar units may produce heat, and may only produce heat when the sun is shining...but using more and larger collection units should make a huge difference, even if it only works for part of the time (when the sun shines). Hypothetically, a few days of heat per week for maybe 10 hours a day is much better than nothing and should be worth it.
@@westwindsailer Best method with the fan is to make it driven by solar with a thermal minimum switch
i think if you reverse that rough cut saw blade it works just as well. when cutting pvc siding thats what we did and it worked fine but the teeth on the blade we used were a little smaller.
I understand this gets really hot which is great, nice video by the way. But my question is about the duration, how long will it hold hot air such as like during winter night does it still have some heat left in there or does it run out fairly quick?
There's not much thermal mass involved. It might take about 20 minutes to reach ambient temp.
Is the two end tubes have plugs in them or is it for the air flow?
Any chance chemicals from the paint or glue is going to slowly leech into your house due to the heat its exposed to daily (and then have long term health effects)?
Can you leave this panel inside patio door of house? where it gets lots of sunlights too
OK, so are your gutters connected on both ends of the spout or offset every other end with the connectors?
what kind of fan would you reccomend to put in the hole, and is there any wiring needed or does the heat blow the fan..
it easily heats a 300-400 sf area to 85 degrees in under 30 minutes on a sunny day. As far as storage, we are tinkering with running the hot air through a heat exchanger that heats up glycol that is them piped down to a basement room filled with sand and other heat trapping materials. the room then stores the heat at a constant temp and can be slow vented for dispursion through a home or office. the idea and appliction has been around for a long time, we just made it for less expense
did you use steel downspouts?
I've cut plenty of aluminum in a chop saw with a 60 tooth carbide blade...
Yeah and a cheap plywood blade put into the saw backwards will work pretty slick if you cannot get a carbide tipped one......
also turn it backwards
Can anyone quantify what you might push when the outside ambient is freezing or below. Does the temp diff stay the same so that at freezing would you push near 140? Somehow, I think not, but I would love to know???
i see that you were wearing shorts so I take it is summer time?? so have you tested this in the winter time or out side temp say 32F/ 0C what was your output temp then. so far I like this design the best
This be great for green houses. Doing winter stuff. Gave me an idea for water aswell. Wish ther was a way to store the heat to last the cold nights. Maby useing water as a heat sink.
That looks amazing!
I have a technical question.... how does de air circulate... Because it looks like you made a serpent from all those metalic pieces, but in one end instead of having one open you have 4 open...
i hope you undesrtand my low level english!
cheers
It looks like air comes into one of the downspouts, how does the air exit that downspout? Does it just leak out the end?
I would use aluminized mylar spray painted black as a backing to reduce heat loss. An emergency blanket from Wally World can be had for less than 2 bucks.
I am not against making money but there are dozens of video's like this on youtube he doesn't fully explain it. A man is worth his pay but this is fairly simple although I am grateful for this video. Just build a box use clear glass,black paint,foam board on the back shiny side up,connect them, have one in and one out,instead of using the sealant use that expandable foam on most of it, use a small fan that one is way to big for the construction to use in the winter. Don't sell your stove lol.
also wondering the dynamic of cooler winter air on cooling the core on a winter day and how that would affect (lower) the continuous temperature you'd be able to extract from the core.
This is great but how do we produce heat in the night when we really need it.
nice video, dont worry about the nasayers. I have a question how cold can it be out side before it dont work. either way I like to give it a shot to see if I can use it to keep my shed warm in the winter.
How do these work in winter and 8 hours of sun?Winter is when we need heat no when its 80 deg. out side
What was outside ambient temperature? How would it work out in the winter?
What was the ambient temperature that day? What latitude are you in? What time of year?
There is 2 key data point with solar hot air.. Temp, and over 200 degrees is quite good, but also volume of air passed through? I was wondering if you know that, and do the 3/4" plumbing fitting slow it way down..
Thank you for taking the time to make the Video. please can i ask you. is there a limit for the length of the pipe work coming from the unit. and if the unit was large enough could you T-off for two separate room's. Thank you,.
If you insulate the pipe you should be fine though there is always some loss as the length increaes and splitting it will cut the heat in half between rooms might want to go to one room and then a vent from that one room to the other and then the second room into the intake of the heater or build 2 heaters. Also spliting might cause back drafting so you woukd need a piece like the ones in radiators to make it flow only the way you want. There are videos on the radiator thing on youtube that arent hard to find. this old house explains it well. Could also use some heat tape along your venting or wherever except on the intake to the heater keep that towards the outtake side that runs into your home heat tape can easily be ran off regular solar panels well...
The solar heater projects (water and air ) I have seen on yt test their product when sunlight is at maximum and with optimal incidence angle. Fair enough but how good are those devices when the son is partially obscured or when the angle of infalling sunlight is oblique? Are there constructions that otimizes efficiency when conditions are suboptimal as they are most of the time?.
How well does it work during the winter months?
I guessing it won't fully heat a big room without cooling off because of the cooler air that you'd have coming in the inlet side. But I'd be interested on just what temperature it will keep a room and what size the room is.
I am sure that I miss something, as I don't see how is practical to use a solar heater outside! How is this effective or how do you use it for heating the inside of your home?
I assume it was just to show how it was installed (the end caps). All plugged up except the INLET and OUTLET.
But I would also like to know about the threaded pipe. was that done on both ends?
Very nice idea!! I like the idea of lowering our carbon footprint & cost of energy. Can you quantify how much heat you generate from one panel? BTU/hr?
again, guys...i have over 100 videos on here, this is #23. please watch a few, and understand what we are testing. We do have a solar powered air conditioner, so check it out. this is a solar thermal hot air panel! It is used during winter...not summer. i get 50 comments a day, asking or telling me stuff i already know, just subscribe, watch the videos and enjoy. I am doing this to help you. I spend the time and money so you dont have to, i have much to show you.
How well does your design perform in -20 celsius? Does it still produce heat above ambient as those low outside temps?
Thanks for sharing 🤝
Olá.
Eu não entendo.
Qual é a aplicação prática para este aparato?
Vai ser usado em quê e como?
Can I ask what the climate is like where you are located? What was the air temperature when you were taking temps on the downspout?
Nice !! What about using thermosyphon to force the air to go true the house ? And what about doing a whole roofing sheet system more or less like this ? ; )
Yup, turn blade, got it! Music not to your liking?? Got it! This video is 11 years old people! We perfected the design and made tons!
Is there a way to convert this idea into pool heat?. Put tubing inside each down spout or 4" black pvc and bet i could swimm all year in florida! Gotta be 86 for me.
i wondering if some gas eg.argon in the box would not be helpfull with efficient
Ummm. What was temp difference from blue gutter test and the built panel test. Same day? Same time on a comparable day? Also,, I personally prefer to run tne air conditioner when its above 80 degrees outside. Not really looking to make more heat. You would have to show me, before I spent money on this, how well it works on a sunny or partly cloudy 20 degree day. That's when I would want supplemental heat instead of buring natural gas in my furnace.
Downspouts instead of cans. Thank you so much! I am diabetic so I can't drink that much soda.
Hi justin, i have a question. Does this thing need to face the sun to get the heat from the sunlight? what if i make this solar collector in an apartment that does not face the sun? Will it work? thnkyu :)
please check out all my videos of the solar hot air panels on here. our final versions have all tested out at 150-220 degrees max. taking in 8 degree air on one video it still produced 150 degrees. normally you pull inside air into the unit so it will put out 200. our new production units come in 3x4 or 3x8. they easily heat 400-800 sf areas.
Are these safe? Like they won't get too hot and combust? Or combust stuff around them?
What production units?
Will it keep my shed warm here in Ohio when it's 25 degrees outside??