FORCED AIR HEATER part 4

[rupert1124]

Thanks this is a great series of videos with lots of information , absolutely inspiring.

[pdrolami]

Where's video number 5? the one that shows how it works and hot air y provided to the house? thanks pedro

[davidvwilliamson]

how long will those motors last?

[lolley1100]

The blue fan looks like an electric supercharger for a car.

[52memor]

I can't find any other videos on how he completed his forced air heater.

It obviously didn't work.

[bornkool]

KooL

[boogiemanmt]

Hi, I second that, you should always tell what brand your supplys are and where you got them so people like me out in the sticks without a store nearby can find this stuff. Ive been looking at bilge fans online for two hours and cant find anything remotely similar to yours. Great videos keep up the good work bud!!

[Rgtz79]

Hi,

hey can you let me know where I can buy one a those fans please?

[Rotorzilla]

This has got to be one of the only videos where I have not seen Dan burning something.

[cableairman]

How about using a squirrel cage fan, you can even get on that runs off of dc on a blower for your car heater. I'm pretty sure Squirrel Cages are far more efficient and also have high flow rates. Just a thought.

[gilbet]

I would use a much smaller fan to save electricity, or even no fan at all.

Mounting the solar panel (in a clear shell) on the roof puts it at an angle, which would actually cause the hot air in the shell to rise on it's own.

You just need to make sure the top duct enters the house at a higher point than the bottom duct does, to keep the air moving fast. Otherwise the hot air might drag its feet a little, not wanting to go back down to the cold end because it's still hot. :-)

[gilbet]

That's an excellent idea- utilizing the electricity AND the heat from a solar panel.

That basically triples the energy output of the solar panel and takes the total energy conversion of absorbed sunlight up to 100%

You just eliminated the # excuse people used to use for not using a solar panel who used to say "It doesn't do enough to warrant the cost."

[tewster]

i feel like the blow drier was talking to me......no im not, but i wish i was high ;) nice video guys

[migxp1]

You want heat in winter and cooling in summer - you need a temp control to adjust the speed of that fan.

[ryobie1]

Do you live in a junk yard?

[MandalayWind]

Using a solar panel under water would act to keep the panel cool and efficient and also double as a solar water heater as well.

[DJRockinRob]

@MandalayWind its an interesting idea .. putting them under water but my question is how much water? inches? Then how would you combat the angle needed to achieve max output. I mean, would laying the pannels flat (to accomodate the water) impede the efficiantcy of the pannels. or are pannels angled only because the roofs the live on are angled. IDK ahh and what about standing water going stale or growing algea? sorry for all the questions ... they just come at me left and right :)

[MandalayWind]

@DJRockinRob Yes a solar panel does need a specific angle to the sun for efficiency. A recirculating system would be needed to combat the negative effects of standing water. Keeping a solar panel cool is a tremendous improvement to it's efficiency.

[DJRockinRob]

@MandalayWind Thanks for the info! :)

[lostburro]

That's one big arsed dish you've got there in the yard! Trying to commune with ET?

[GREENPOWERSCIENCE]

@lostburro THEY ARE HERE! LOL It is a solar collector. I have a company making me panels, ordered 12 months ago, company stinks.

[kdknitro]

fan isnt designed to run all time, just putting that out there

[samdekok72]

What if you put a pipe in the ground below the panels, and used the rising hot air from the panels to pull cold air up out of the ground exchanger?

[sonyxploder]

Do the amorphous cells come in black Dan? Im not talking about the cell itself, more like the border surrounding it. Like in your video it's silver in color. Wouldn't it be best if everything in the box was black to attract more sunlight?

[sonyxploder]

Do the amorphous cells come in black Dan? Im not talking about the cell itself, more like the border surrounding it. Like in your video it's silver in color. Wouldn't it be best if everything in the box was black to attract for sunlight?

[TaylorHolmes]

That's an impressive fan for 12 volts and 2.25 amps!

[martenfisher1]

The more powerful fan looks to me like it may pull so much air that the cell would cool down to fast and produce less heat than a more gentle fan.

[IdahoViewing]

@martenfisher1 I was thinking that too but then I realized it would still pull the same BTU's from the collector. The high volume fans would just pull them faster and at a lower exit temperature. The fan could be put on a thermostat so it would only come on at a certain temp if you wanted.

I am more concerned with the VOLUME (dB's) of both of those fan options. There are probably much quieter muffin fans that run on 12 volts and even less current draw.

[PostToastie]

Where I live it gets colder at night, so how do you make it work at night?

[gilyardk]

Cool stuff as usual!

[callmeshane303]

Hmmm Hello Danny! XOX - your so clever - so creative...

Actually those 27W fan motors ARE cheap units... 2 weeks is not a sign of durability.

Remember that is made to vent the petrol fumes and bad air, from the lowest parts of a small ship / boat.

Like if it's been moored for a while and people want to clean the air out prior to starting the engine.

Small cheap motors with unsealed sintered bronze bearings are not made to run for years on end,

[cdltpx]

Dan I use a coupon out popular science to get a set of those HF solar panels for $150 decided to get a 1K inverter there too to power a microwave oven that way I will have a 24/7 solar oven :-) Plan to get them out the box and tinker with them this week the panels are to supplement a camper I have plan is to make it an off grid project. Really need some serious juice to power an ac unit but It would be worth it the camper is well insulated.

[scotchrks]

How many heat boxes are you planning to hook up in series with this blower? I would think a lower air volume fan would be needed (or better) so the air inside the heat box would have some time to heat up as you are heating up the incoming air

[JimboJitsu]

another great video Dan! Looking forward to the next!

[learning41230]

I really appreciate your videos. You and your wife are sort of running a short-session school; and I am learning. Thanks.

[mrbunnylamakins]

Dan you Rawk and thanks for your videos!!!

[Supralobe]

Hrm cool fan but very loud - what about using a centrifugal/squirrel cage fan? I thought they were more efficient.

[TheLonelyImmortal]

That fan is amazing. I wish I had one, actually. I wouldn't use it much, but if I wanted to get dirt off of something and I was tired or hot or something, I'd use it. And it beats using a brush.

[lvecsey]

how many cfm does that 27w fan put out, just for comparison to a conventional computer fan which I see are rated at ~80 to ~100 cfm. there are powerful ones that help move heat from processors and hard drives inside servers, to larger ones exchanging air from an entire rack cabinet.

[GREENPOWERSCIENCE]

@lvecsey 175 - 190 cfm for this one.

[steadfast1984]

awsome

[homertalk]

Unique Idea. kudos.

[astrialkil]

Ive read that PV panels produce less power the hotter they get so cooling them might get you more power. What is the temp difference between the panels on the roof and in the box?

[GREENPOWERSCIENCE]

@astrialkil optimal sun at 75˚ f - 80 watt panels will produce 80 watts. In reality an 80 watt panel produces about 63 watts due to atmosphere debris and heat buildup. Underwater is the best results so far with amorphous cells.

watch?v=rGi0Mf3cl1E

The fan idea might work for a panel array. Not sure if the power draw for CFM will economically offset the wattage gain from a temperature drop.

[astrialkil]

@GREENPOWERSCIENCE no I'm sure it wouldn't but i was wondering if you could get the heat for free with out having to reduce your load in the house. Loosing nearly 20 watts is a lot tho. Some of that ford motor corp "windshield film" that cools with the help of the sun might be worth your time.

[DJRockinRob]

@GREENPOWERSCIENCE its an interesting idea .. putting them under water but my question is how much water? inches? Then how would you combat the angle needed to achieve max output. I mean, would laying the pannels flat (to accomodate the water) impede the efficiantcy of the pannels. or are pannels angled only because the roofs the live on are angled. IDK ahh and what about standing water going stale or growing algea? sorry for all the questions ... they just come at me left and right :)

[Probewitch]

You should team up with the local high school, you get helpers and they get educational experience. Extra credit in a science class I'm sure.

[chop98]

Dan, do you think it would be possible to hook a somehow reversed photocell up to this system to have it (12v) kick on when the sun came up? Sort of an auto heater throughout the day and auto shut off at night? Just curious.

[GREENPOWERSCIENCE]

@chop98 The solar panel will do that. Low sun output (clouds) the blower slows down and shuts off at night with a direct panel power setup.

[chop98]

@GREENPOWERSCIENCE Put a big DUH on my forehead, man. I don't know what I was thinking. Of course when the sun hits the panel the show starts. hehe Maybe in the future I'll have a better question for you. :) I was trying to make it more complicated than it is. Thanks for your time.

[social3ngin33rin]

Maybe a computer fan would use less power with more efficiency?

I don't own a hair dryer : /

[dzgfdg]

1st yes i have made it