GREAT DEPRESSION 2 CORRUGATED SOLAR FORCED AIR PASSIVE HEATER FIGHT HIGH HEATING OIL
GREAT DEPRESSION 2 CORRUGATED SOLAR FORCED AIR PASSIVE HEATER FIGHT HIGH HEATING OIL
CORRUGATED SOLAR FORCED AIR PASSIVE HEATER FIGHT HIGH HEATING OIL GREAT DEPRESSION 2
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August 13th, 2009 at 2:21 am
what type of flat black paint that you use to absorb maximum amount of solar radiation?
Thanks
August 13th, 2009 at 9:12 am
Hi,
The best paint is a $1 a can enamel from LOWES hardware store.
It comes in a white tapered can. Walmart Flat black is horrible. Does not cover, but their Gloss black is excellent.
So Gloss black, walmart or Lowes
Flat Black Lowes
Other countries, try the lease expensive first.
Thicker coats reduce efficiency transfer.
August 13th, 2009 at 9:14 am
The vacuum was only for testing. A solar blower fan would do the trick.
August 13th, 2009 at 7:45 pm
My parents lived in Denver & had a south facing front door that was painted black on the outside. My mom, in the middle of winter, could heat their entire livingroom & kitchen with that black door! She opened it about 1/2 was and blew a small fan that direction. On a sunny day you would literally cook if sat anywhere near that door! She could shut off the furnace on a sunny day. Of course the bathroom was a little chilly but they didnt bathe until night & furnace was kicked back on. CHEAP
August 15th, 2009 at 1:33 pm
You know, vacuum exhaust is hot.
September 3rd, 2009 at 12:00 am
The moron seems to be you. CO2 is needed by plants, yes. But plants can only absorb so much of the excess that we are giving off. The excess is not by our breathing, which is part of a natural cycle, you moron, but by burning fossil fuels and by by-products of industries, which is not a natural process. It’s more than the earth’s oceans and plants can absorb, especially since we have a fraction of the forests (natural CO2 scrubbers) that we had a century ago. Get an education, you need it.
September 5th, 2009 at 7:51 pm
does this panel will be enough to heat one 12×12 room?
for at least 5 hour a day ?
how much cost a 4×8 sheet of COROPLAST.
September 6th, 2009 at 10:05 am
HI,
A BLACK SHEET 8FT X 4 FT COSTS $20. Spray the black sheet with flat black spray on the sunny side up. This acts as a UV barrier and extends the life of the sheet by 1-2 years.
Yes, this will heat a room + 20 f that size depending on insulation, ceiling height and outside temp. For very cold climates, add a glass buffer. Make 2 or 3 smaller units as 4ft x 8ft glass is expensive and impossible to work with.
Smaller units can be chained together.
Dan
September 7th, 2009 at 10:23 pm
if you setup pvc or abs plastic frame it can be sealed to the plastic cloraplast with its own glue. one of them should stick to the signs. weather proof to boot.
September 13th, 2009 at 10:27 pm
Ya the vacuum blower air would be warm from the motor and get warmer as the test went on but still a great idea. It’d be nice to see what it would produce in cold clims. It would be sucking cold air in and may cool the unit too much. I would be tempted to put a dimmer on the vacuum to slow it down to a low purr.
September 13th, 2009 at 10:32 pm
Did it solve anything by name calling?
September 20th, 2009 at 5:14 pm
1. Air blowers can use a lot of electricity, a sculpted inlet/outlet approach will be needed, or at least the multiple port design mentioned, to minimize air flow resistance & blower size.
2. The channel material is a good conductor of heat, so there will also be heat loss on the far side, so insulation with a radiation barrier/reflector (aluminum usually) should be applied, with the reflector directly against the channel material.
October 24th, 2009 at 2:55 am
hey Dan , this is a good idea. the narrow passageways of the cardboard makes it a fast heat drain seeing as it is easier to heat small volume large volume. the large surface area denotes larger wattage. so in my analysis of this, it should keep the temperature flowing quite constant.
try spray foam on the back for thermal retention , and a thin non shiny plastic film for endurance on the front surface . and then a layer of plexiglass over the unit for weatherproofing and heat losses.
MUDDy
October 28th, 2009 at 9:45 am
If you try something like this, you probably want to try a solar powered fan to eliminate the electric use (and to cut off air circulation during night) If your air inlet to heater is from lowest part of room, it will be most efficent as you will heat the coldest air in the room, it will pull heat from the top of the room down that way. (Keep inlet and outlet some distance from one another in the room.)
November 2nd, 2009 at 5:30 am
haven’t read all 191 comments, so I don’t know if this has been mentioned yet or not. If you have the inlet at (let’s say) the top left corner and the outlet at the bottom right corner (kinda like an automotive radiator) it should equalize the airflow through the pannel quite a bit. Thanks Dan, good stuff! Keep it up!
November 21st, 2009 at 4:57 am
Very cool vid .I can take this to so many higher levels.
November 21st, 2009 at 4:59 am
lol Yea I’ll be sending a upgrade vid based on all the info you gave
December 6th, 2009 at 11:56 pm
Would a computer fan hooked to a cheap solar panel do the job?
Would simple convection current be sufficient as cool air drawn in as air heated?
December 9th, 2009 at 4:51 pm
Yes, the cardboard chambers are too small but coroplast will work perfect.
December 20th, 2009 at 1:11 am
your testing the heat out in the heat
that thin piece of cardboard would NOT work out on a cold wintry day and you have no insulation and the air flow threw it would freeze up, and there is no air volume this means the air goes in one end and out the other end and has no real time to let the heat build up. with thin plastic you said at the end of your video and cardboard theses are 2 items that can’t handle heat and would not last
December 20th, 2009 at 9:35 am
@TheEZhexagon coroplst lasts 5-8 years for a $17 sheet. Also has 3 x the volume of 200c cardboard. Coroplast reaches 137 F in direct sunlight 25 F outside temp, on glass insulation, with glass it goes up to 167 F. The small channels transfer 80% of the heat at 30 Cubic Feet Per Minute. Coroplast is rated at 250 F. Also additional black spray paint extends UV to 7+ years.
December 25th, 2009 at 5:33 pm
instead of using wood how about pvp pipe with caps on the ends then you can paint it black so it can also help heat up the air
January 5th, 2010 at 1:51 pm
Thanks man , you are a smart guy ., amazing stuff
March 14th, 2010 at 3:08 pm
how do you know it’s not the vacuum motor that’s raising up the temperature…
March 16th, 2010 at 7:50 pm
Because a vacuum only adds 1-3 f at most. Place your hand next to a shop vac exhaust.