Feb
23
GREENPOWERSCIENCE asked:
This is a prototype easy to build rooftop forced air heater that produces 45 degree increases at a high CFM CFPM rate. This one is made out of cardboard. A real one can be made out of weather proof material.
http://www.greenpowerscience.com/
Tags: Depression, depression
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Tags: Cfm, Corrugated Cardboard, Forced Air Heater, Great Depression, Heating Oil, Prototype, Solar Heater, Weather Proof
GPS, thanks for getting back to me, I think I’ll give it a try. I’ll let you know what I come up with.
I think it is 210 to 250.
Dan have you or anyone else had any issues with melting the Coroplast inside the sealed solar panel? Seems like the temp would get pretty hot during the summer months. Does anyone know what the critical temp would be? Hate to invest the time and money into something that’s gonna melt down.
Thanks for the great ideas.
well if u do a biger hole u can use it to put 2 or 3 pieces of card board but the under leyers might not get as much heat
Dan the Man! Thanks for all the sweat you put into your ideas. You are doing some great things. I’m going to try a lot of your things - especially this. Again, thanks!
Glad you caught that:-)
Youtube crunched that part of the video, digital glitch. That is why the sound gets goofy too. By the time I caught it, Youtube had Spotlighted tis video so I did not want to re post it. In the original version it is about 3 seconds long vs. the subliminal commercial flash:-)
Hahahaha lol VOTE FOR DAN! at 15:43
:D 
Check 15.42
Dan & Denise…I’m sure enjoying your solar energy projects. This video w/ the corrigated cardboard…reminds me of when I had this house (built in 1920) re-roofed over the old embossed designed metal roof that was leaking. The contractor/friend used a corrigated white fiberglass roofing material called ‘ODULINE it lower my un-air conditiond significantly.
A book named “Low-Cost, Energy Efficient Shelter” was inspirational too.
Great Video. I just added to Open Source Energy site. Thanks
Acrylic cover,
Styrofoam back.
Input to one corner,
output from the opposite (diagonal) corner.
So all the air paths are the same length.
Acrylic cover,
Styrofoam back.
Input to one corner,
output from the opposite (diagonal) corner.
So all the air paths are the same length.
We are due for a cold night here, If it is cold during the day, I will get some temps on the Coroplast. The ideal concept would have an Acrylic cover. Snow can be lessened by angling it directly at the sun. This will help but deep snow, shovel:-)
A vacuum seal would make the temperatures go way up in cold but the unit would need to be smaller cells and would take some fine workmanship. Thee good thing about this idea, you can shut it off when there is no sun.
i was wondering the same, there are some down sides to it. the idea is ingenious.
great idea but, when its 10 degrees out how warm is that cardboard? also, if its outside, wont snow build up on it, blocking it from what little sun us northerners get to begin with. i would like to see this tested in freezing temps, of course its gonna get hot when its 88 degrees out and the sun is beating on it 10 hours a day…still this is a neat idea
keep it up thout provocking
Another great video thx
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I am going to have to build one of these. I am curious to see if the surface actually heats up enough in this cold Connecticut winter air.
Hey got a problem i built it tested it it was 54 outside and was only getting max 36 out of it turns out i made an airconditioner help would be nice thanx
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Simple but nice. You did a great job showing how to make one. Good work. Thanks.
Dan do you plan on using some type of corrugated polycarbonate sheet… like green house, signage etc? well this could be the answer to getting it free…”A slip-sheet is a thick corrugated, solid fibre or plastic sheet that sits underneath stacks of shrink wrapped product.” So go to a factory/trucking outfit/shipping etc and see if they have any in the dumpster or ask… they throw these things away… later
love your videos