Complete Steps for Building A Solar Thermal Soda/Beer Can Heater for A Greenhouse - MFG 2013
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- Опубліковано 20 лис 2013
- This is a 20 minute video that shows you the supplies, cost and every step to build your own solar thermal soda/beer can heater for a greenhouse. This is a small scale design. You can build them as large as you want. Every step is clearly explained in this video. Enjoy!
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At 12 minute mark I used a steel can that I cut in half & used it to hand "drill" through the foam holder to get a prefect no gap cut.
Many people drink using a foam can cozy.....you might be able to place the empty in that and help hold it while drilling...Great Video, Thank You!!!
For the paint, you can get higher yield using Thermolux "Selective Solar Coating" paint - it collects solar energy much more efficiently than matte black, and also has an extremely high temperature tolerance. It also won't bleach over time from UV exposure, which regular paints eventually will, thus losing effectiveness.
I've heard folks suggest Lexan for the front pane as well, but I think plexi is the best bet, as is used in this video...
For anyone interested - Plexi has about 4 percent better light transfer than Lexan and lasts much longer under UV exposure. Lexan will typically degrade after about 5-7 years of UV exposure.
While it's true that plexi glass has lower continuous heat tolerance (180 degrees, versus Lexan at 275), that will be less of a factor if your box has styrofoam lining. Styrofoam melts at 240F, but will begin to decompose at a much lower temperature similar to the tolerance of plexiglass.
+Chris McKay Thanks for the technical info. It really helps. I plan one day to make it on a larger scale.
What is the Selective Solar Coating , Where ı can get it
Selective kaplamayı nereden bulabilirim link varmı acaba yardımcı olursanız memnun kalırım 🤝🤝
Thanks for the advice...where would I get solar paint?
@@fdort3971 I can't post a link here, I think, but if you just google Thermolux "Selective Solar Coating" you should quickly find the company that makes it, which is Dampney Engineered Coatings.
I bet you thought I wouldn't reply 7 years later :)
I've watched several videos about this topic over the past year and yours is by far the best. Thanks for doing this and sharing it with us.
Great video! I got all the info I need and your video made it so much easier for me to do. Thank you so much
I just used your video tom make one of these yesterday. It working well so far! Thanks!
thank you very much, you will be a very good teacher , you explained very well
Two videos that might help others: 1) How to join cans without caulk for solar furnance explains how to join cans without glue. I tried it once and found it surprisingly easy! I used a razor blade to cut off the bottom of the can and unlike the video, I just twisted off the tab on top of the can and used the original hole. Using this method, you eliminate having to use silicone and you don't have as many holes to drill/punch. (You still need to somehow make a hole in the bottom of the 'intake cans' and a can opener to open the topmost cans for exhaust.)
Bill Johnson
(scroll down) asked about using 3" rigid aluminum duct instead of aluminum cans. 2) Soda Can energy transfer converted shows that a straight-thru design is not the way to go.
Big difference in pricing, most of the pricing is double here in Canada.
Great video
Dude... i love u... your amazing.
I ve watched all your videos and you ve tought me so much.
Thank u for your knowledge and your awesome work. God bless!!
- Steve from Montreal
stavros19743 I am glad it helped. Let me know if you have questions.
Next time cut a can down to 1/3 height with tin snips and use the can itself to cut the styrofoam...
mjkulikow Ah Genuis! That is a great idea. Like a cookie cutter. I love when something is just sitting there in front of you but you cant see it. Great tip. Thanks.
Great idea!!
Thank you for this video it's super awesome!!
Good video.
A neater way to apply the liquid nails is to squeeze it into the little well around the inside of the lid tops instead of the bottoms.
Liked your video, simple and looks easy. Thanks
That's my goal for my videos.
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thank you so much for sharing this.. this is very helpful.. great video..
Glad to help.
To cool..got to try this
good and complete tutorial...
+Rumah Rekayasa Appreciated!
Awesome man! You’re a Coors lite drinker! 👍🏻
Thanks for uploading this. Out of all the solar pop can heater info I have found, yours is the easiest to understand. For newbies like me this is awesome! Very detailed.
A lot of the other solar pop can heaters use wood. Do you think placing the styrofoam box in a wooden box would help the life of the heater?
Thanks
That would be a great idea using a wood box. If I make a bigger production version, I would do that.
Very nice solar heater I do some similar very nice video keep up the good work!
goforgreenliving Thanks I am try to figure out how to adapt it for summer and use it with an outdoor dehydrator.
Hi Gary- nice video- I want to build a Thermosiphoning Air Panel (TAP) like yours, except bigger to heat a room on the south side of my house.
First, gotta build the raised beds and get the garden going... Silicone... with ending sounding like 'cone'... :D
Very Nice Gary, now i just need a house...hahahaha...joking....very nice video...will watch all other videos that you post.
Excellent video Gary!! I was just thinking about making a solar heater yesterday. (Not sure why, considering I live in So. California and it has been in the 100's all summer.) Your explanation of the steps was superb. I did have one hint for anyone trying this for the first time. Restaurants that serve a lot of fresh fish, throw out Styrofoam boxes that are perfect for a test project. I just picked up my 'test box' today behind a Japanese restaurant. It is formed Styrofoam box, and the inside dimensions are: 8" deep, 15" wide and 33'' long. [Just an idea for someone wanting to give it a shot.] Thanks again Gary, your insights were just what I was looking for. (especially the paint/Styrofoam/tinfoil hint.)
Thats a great idea for a box. And the reason you are building one in SoCa is because it is just cool to build.
Actually, I do why I am building a beer can solar collector. I am trying to see if can use the heat collected to run a Stirling engine.
Actually, I do know why I am building.......
Kevin Thomas Very interesting. If you have a chance I would like to know the outcome.
Awesome tutorial, Gary! I'm looking for a cheap solution for a heating pad for plants. Do you think this method could be tweaked for that purpose?
Have you tried hooking two up in series? Would the heat distribute to the 2nd box, make it warmer than the 1st box then pass it into the green house?
Man how well did it work
Very nice design, looking forward to seeing the test. Hey I bet we are neighbors, I'm MD zone 7a. Thanks for sharing.
Gideon Gardens Thanks. Full sun today lots of tests. Im out by Baltimore.
Gary Pilarchik I'm just across the bay:) I've met several gardening people on youtube in the area.
Great video Gary! Best explanation I've seen in a video or read on any blog posts. I'm curious to know how this worked out for you? I live in southern NJ and am interested in making one of these for a greenhouse as well.
Just found the output test video! I'm excited to try this out. Thanks again for the video!!
+iFollowDesiree It really works on output. I havent made a bigger model but I put it could warm a south facing room or work shed in scale.
What about at night? If not very insulated, isn't that harder to have such a drop at night?
I did something similar with one glass on it and then i installed second glass thus creating double layer, that increases the heat inside the box a lot
+skamravec Very good idea.
You don't need a drill bit for the cans use your razor knife you score aluminum around inside edge like three or four times the perimeter of the inside of the lip of the bottom of the can and the same for the top with a night with a knife and you go around you can cut aluminum sheeting or aluminum with a razor knife it's scratches and cuts wide open I know this cuz I used to install aluminum trim around windows and this is how we used to cut it in the field after we got it measured.
Thanks so much
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As a horticulturist of over fifty years and a glasshouse grower in the UK, I am a little puzzled how this could be a useful heater for a greenhouse. Even in our northern latitudes, when the sun shines in winter, greenhouse temperatures can reach up to 15 degrees centigrade plus. Since this contraption only produces heat when the sun shines and only a very small amount when it doesn't, I can't really see the point. Heat is really needed at night when this, obviously is unable to work.
Excellent video. You said you were gonna be doing a video on showing the temperature outside and inside. I can’t find it
Get the Milwaukee ShokWave hole saws. Available in in all sizes. Cut through thin stuff easy. Let the hole saw do it’s work, don’t pressure it so that you mash the can.
Hi Gary great video, I will be building this with high school students for our greenhouse. I'm just wondering if we should build 2 or 1? Our greenhouse is 8 x 12 ft. What are your thoughts?
It best to make this over 2 days. The first day spent drinking and emptying the cans !!!!
It's a great video Gary! And looks cool! I wanna build one also. One question: you kept an about 0,5-1 cm gap between every single column in the housing, is it necessary or can I place my can-columns as close to each other as possible?
Thanks!
***** I think you could lean them on each other and close the gap. The more metal you can get in the better.
Thanks a lot!
Great video Gary Pilarchik ! Well done and informative. I've never seen anybody make these out of Styrofoam! :-)
***** Thanks. It is sturdy and light weight for my need with a greenhouse. If I were mounting it on a house for room heating... maybe not Styrofoam.
Sure, but either way, it's a great proof of concept and still functions well. I look forward to a video that shows the heating capabilities!
***** Yep the concept is sound. And I am going to see if the thermal siphon that starts is strong enough to move the air out. I did order a small solar fan but Id like a design that just moves heat with out any moving parts. The fan is another video. It was just a hat clip solar fan for $4 from China.
Gary Pilarchik you could even wrap it with a thin masonite that is primed and painted, or ply.. ply would be cheaper.. or hell OSB is like $7.50 for a 4x8 sheet.. prime and paint it and it is all good :) Thanks for the video Gary!
I'm in lil rhody and good video but what about circulating the air in the box so the air has more time to heat
I think you would address that by making a bigger unit.
i built one of these, and here are my thoughts. its a fun project. I've only used it for a couple weeks. i am getting between 130 and 150 coming out of the solar heater and into my house. here is the downside, there is not enough volume of air coming out to add any real heat to a room. i put a fan and the bottom to force more air up and out the top. that did help, but im afraid it is still not enough volume of air to make any meaningful difference in the feel of the room. any ideas from anyone?
also, if you lay your glued-up cans in an angle-iron channel, they will dry perfectly straight.
Bill Johnson When I make a production model, Ill use that idea. And you other ideas are good too. That was more of a model to see if it was viable. I might even and a fan of some sort to slowly draw air through it.
my only question is how well did this mini build work? The holes both in the cans and the elbows you are using seem too small to work well...I would like to know your temperature output on a decent day.
(Hope you don't mind the multiple comments. Thoughts just come as I watch...) I wonder about the need to balance the intake and outflow. Have you found that they need to be appx the same size? Would there be a benefit to an adjustable baffle in the outflow duct? Did you consider using foil-faced duct board or radiant barrier panels, rather than lining with foil? The duct-board is cheap and light, and most home centers have it. Also, I wonder about using 3" rigid aluminum duct rather than messing with the cans. I might also suggest engine paint as it is both flat and highly heat resistant. Great build! Thanx for posting.
Bill Johnson No data on the flow. I went with equal size on the model. I think the duct board is a good idea. As for the cans I have seen variations using rain gutters, they are cheap. I would suspect you could use replacements for the cans. I would thing you would just want to make sure air doesnt flow through the systems so fast it doesnt absorb maximium heat.
@myfirstvegetablegarden thanks for the clear explanation. Shiny side of tinfoil reflects heat...so should I leave it shiny and only paint the cans? I see it's been 10 years since you made this...how has it worked for you? If you made another did you make any improvements?
This was a small scale version but it was effective when I used it.
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Hi man... Were is th test... I cant find it...? Tanks for the Great video. 👍
You build the box yourself but it might be practical to look for existing boxes as there is less concern about hot air going out and less glue etc. to be used. At the market I saw people who are selling fish using boxes that have about the required size. Actually I got them for free after they sold the fish. It just took a few days to remove the smell of the fish.
That's a great idea.
Hi Gary, This is nice project, I watched this video couple of times but missing one information, does all cans required to be drilled or not. In your video some of the cans placed down weren't drilled down? Can you provide the project details such as measurements. Thanks for this project and this is good video
Krishna Narravula The holes are all drilled out. The cans should make a tube where air can flow from bottom out the top. The exact measurements aren't so much needed as that was a small scale model. The side should come up about 1/2 inch over cans so plexi glass has room to sit but not to much. The frame should be similar to the picture. I can measure the size if you want but you may want something big most likely.
Very interesting video Gary. Would this be called a "passive" solar heater? Do you know how this differs from those containing water or the commercial ones, just a basic answer
eveny119 Yes and no. It is passive in the sense that it does not have any moving parts.It sits there and generates heats. Passive systems are often look at giving back heat. Like water, concrete or thermal mass systems that hold the days heat and radiate it back. The system only creates heat if it has sun. It doesnt store or hold heat.
Just a thought, run the Drill, in reverse. Cleaner drilled holes, without, the Drill Bit, grabbing the can. Nice design.
Thanks
Great video. I was thinking about this design as compared to some others I've seen. I'm wondering about the insulation. Would polyiso (polyisocynurate) would be a better insulation. That stuff is rated for temperatures of somewhere in the 300 degree area, so you don't have issues with the insulation melting. What is the melting point for the insulation you use? Thanks!
I never got the melting point and the packaging is gone. I was standard foam you can get at home depot. Nothing fancy.
Hi Gary, I liked the idea and your design so much that I am in the process of making one of these for myself. I noticed you put aluminum foil on the inside of the housing and then painted it. Did you adhere the foil directly to the poly panel? If so, what did you use as an adhesive? (I am at the point with assembly that I am ready to paint the interior.)
Diana Reiss I used the caulk tube liquid nails and some silicon the was left over.
Thanks Gary! I kind of thought that was what you did. I am excited to continue on now.
I wonder if a blow torch could make holes in the bottoms easier, map gas or propane should melt a larger hole easier.
+piecartbox Oh yeah that would work quickly.
awesome video, but wont Styrofoam get burn? wont it best to use wood or just glue them together?
I found a detailed and accurate project on the Avasva website.
Do you have a video of how you attached it to your greenhouse?
+Diana Bickford I never made one. I found though the greenhouse didnt need the extra heat as it held the days sun fine.
Can you show us how to attach it to a greenhouse. I want it to be nice and toast (sauna-like) mid january in MN!
+emily tweten Its not set up anymore but you angle toward the sun and just use a tube to the greenhouse. That model is small though. Might need something bigger.
Loved the video. Let me know if you'd like to put Spanish subtitles on to this. Would love to help out on that, if so. Regards from Chile!
K Katz I appreciate that. I have a friend that said he could do that with some videos. I was kicking the idea around a while back. It might be something I do on the off gardening season.
Great to hear you're considering it. The videos really help get people thinking about new techniques/strategies (esp. at this latitude) and we'd love to help get the word out.
From a design perspective, addition of "tubes" by any form is unnecessary to collect sun's energy. The unreflective black spray paint is all that's necessary to collect and transfer the heated air from outside to inside. You can simply test this by doing away with black spray painting as compared to painting the interior of the box with black non-reflective paint.
This is based on the principle of energy transfer.
Energy absorbed is proportional to the mass of the object that is heated, minus the amount of heat lost during transfer.
Cool thanks. If I build one again, Ill try it.
ua-cam.com/users/pilarchik
Q#2- Would this work for a south facing window inside your home...like in an unheated attic?
Perhaps I'm being lazy, but could you please type a list of the materials, in the Video Description, +Gary Pilarchik ?
If I want to make it bigger, using aproximately 100 or more soda cans, do you think I will need the same materials?
I would want a stronger case. Aside from that, i would build it the same way.
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Helpful video. FYI the adhesive polymer you are using is called Silicone NOT Silicon.
Robert Fili Ive been told. Next use will have the correction.
@Gary can this be used for water heater?
what size greenhouse are you trying to heat?
"Honey, I have to drink this beer to lower our heating bill!!"
Would metal cans heat up more than aluminum?
Do ya think it would heat up faster if the glass was painted black it was just a thought
The plexiglass? Nope that needs to be clear.
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Did you ever make the a video testing the actual amount of heat generated by your unit?
+Samantha Marshall-Hughes ua-cam.com/video/ud2i0yAkuks/v-deo.html On my main channel. Keyword search heat. There are a couple.
Did you ever connect this to your greenhouse? I'm curious because I have a Dad who has a small shop and I'm always worried he uses propane and firewood to heat his shop
Muhammad Awais Thanks for sharing the video
Were the holes in the bottom of the cans staggered?
Not with a plan. I just put them in the center and they varied naturally but I didn't plan a stagger.
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What would really be cool with this whole process if it could be done in reverse somehow and allow for cooler air to flow in on hot days.
+TekApprentice 261 I agree.
Supper great video Gary :)
10x
I Hope you or your family have not been drinking them. Here a lot of people are very concern about aspartame it is also very addictive I have seen that also some university in your country in nutrition area was also making awareness about this.
Gary, what was the temperature difference after using the solar furnace? Are you still using it?
Sandra James In the greenhouse? I havent run it since I am just growing cool weather vegetables. It is something I would use in the spring when I have peppers and tomatoes in there that would need more heat. My greenhouse is a bit shabby so I really want a more permanent structure with the solar heater.
Okay. I really want to know if it helps heat your greenhouse at all, will you do another video later as you promised in this video?
Sandra James I might have accidentally lied because there is a problem with the greenhouse I didnt see which is the bottom gap. Without a sealed greenhouse the wind sucks out the heat. It is hard to measure. I will be attempting to get the heater going come spring so I can warm it for tomatoes and peppers. Hopefully it works and I will post it.
Okay
The problem is that the temperature will be emitted from styrene foam. And styrene as the gas will enter the premises.
Did it work? Would love to hear about results. Scoured your channel, but didn't find anything.
I did heating tests as it was a prototype and it put out heat.
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Heat my chicken coop for long winters? What do you think?
+Stephanie H It will help definately but I dont know what size you would have to make.
What is the purpose of the cans? Could you not use PVC pipes instead?
Xtant Audio Nope. The aluminum really absorbs the sun's energy and creates the heat.
Where would the energy go if there were no cans?
do you have a video with the pannel in the greenhouse
I dont. I am going to be hooking it up to a outdoor dehydrator once I get it built. And that is a big once. Working on it.
I have a question for anyone who wants to answer it.
Would this work in the winter? If so, is the panel placed outside? Is the sunlight enough to heat the air inside the cans even if the unit is outside? If not, then I assume I would place it inside my house in front of our sunroom window?
It works in winter. The sun will generate heat in the unit even with cold. Now if you get in to the teens... I dont know. But putting it inside would generate heat too if you were trying to heat a work space or something like that. As long as you window lets in 100% of light and isnt coated with something.
What kine of black paint ?
I'm a physicist. You DO NOT NEED pop cans!! They DON'T DO ANYTHING!!! Just make an insulated box, with one side glass or polycarbonate, and suspend in the middle depth of it a piece of flat black painted steel window screen! Then add your holes top and bottom with fans at top. It can be built ON an exterior sun-facing wall, and drill holes through the wall top and bottom, or it can free-stand if you put insulated duct hose on it. Line the inside of the box with high-temp foam insulation with an aluminum foil backing facing inward. In summer cover with a cardboard & aluminum foil batten shiny side out.
paper layer that lines the paper bin is what?
Plain old aluminum foil, if that is what you meant.
You need to use high temp paint!
What about night time
Pssst!! I'm a physicist. You don't need pop cans, downspout, or tubes to direct the air. Convection works fine, or a fan makes them even MORE unnecessary!! All you need is an aluminized insulated box and a piece of black aluminum screen suspended inside it. None of the professionally installed units have ducting inside!!
Thanks. Even simpler.
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Isn’t the challenge is night time temps?
You could have used a tapered bit it would have been much easier
Nice video... but, unprotected poly panels are sensitive to UV radiation
Hello Gary Pilarchik , many thanks for the video! and you have the skill how you explain i do appreciate that.. I'am keen to know more bout the building solar , are you available ? for questions do you have a weeb? or others ? look forward hearing from you
akim salvatore Thats the extent of my solar expertise for now. Feel free to send me question. I will answer what I can.
Gary Pilarchik Many thanks i apreciated
Why you put ordinary silicon? It's not heat resistant...
Did this not meet your expectations? There was no follow up video showing the results.
Yes it generates plenty of heat, even on the small scale.
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Can you use a cardboard box?
Styrofoam is a better insulator but I don't know
Pssst! I'm a physicist. You do NOT need beer cans AT ALL. Any insulated box with the inside wood painted black and covered with transparent plastic will work fine.
That sounds easier. Thanks.
By heating those cans you are breathing bpa
Good thinking!!
I’d mention that the cans should be rinsed out, especially if using beer cans. That air going into the greenhouse is fine, but not into your house. Ever smell a tavern in the morning? That stale smell is disgusting.
Great Point.
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Very true.
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[sil-i-kohn]
greenhouse heater? rubbish, I need something to heat my house. could this heater be used for heating a home, or 1 room in a home?
+Jack Rainbow Larger scales are used to heat work shops, sheds and garages.
20 minutes... could have been covered in 2 minutes.
peggyt1243 For the idea maybe but not if youre a first time builder.
Peggy make your own 2 min video