Come find me on Twitter! twitter.com/MichelSeguin2 Or Facebook facebook.com/MikeInTheWoodsYT Or Instagram instagram.com/mikeinthewoodsyt/ And one last reminder to subscribe!
Yes, a build video would be great! I would rather you go through some of the design decisions you learned if more than covered in this video. I have some surplus heat sinks around so will probably use those to lower cost. Another big question I have is how to select between the different modules out there.
I'd like to set up a wood stove application/accessory/design. For in-home, you could keep a pretty constant/safe, hot water convection pump for your hot side, and for your cold side, port the air intake for the stove over the cold side of the TEG. You could get hot and cold pretty close together with zero moving parts. The water sleeve side would get and stay hot/warm, and the cold side would stay cool, with outside air being drawn over it at the rate the fire eats air. Only thing that could hurt it would be the wafers wearing out or the apparatus rusting out. Well, there is a moving part: you feeding wood to the fire.
Just use one fan for both heatsinks, also insulate the hot side better from the cold side etc. there is lots of little improvements you can make. Peltier has an efficiency of about 1% in your case even less than that. You should probbaly try a stirling engine instead, with say 2-4 zylinders for example and a gearing ratio you will blow away the peltier stuff performance wise.
Haven't used it much, but I really like my Biolite stove with it's built-in thermo-electric voodoo awesomeness. I would like to see your building vids.
Out of the box thinking is good. If you can generate electricity with a wood fire out in the middle of nowhere, you're actually more reliably mobile than someone who just ran out of gas. Of course, you can run a carbureted vehicle directly off wood-gas with a good down-draft gasifier strapped to its back that you port directly into the intake manifold. It's not as good as using the fuel it was made for, but if you drive it more like a tractor than like a sports car, you're good.
I've watched several videos on these hho generators that claim that they supplement fuel in the combustion chamber. They claim that they use electricity from tge alternator & battery to generate the energy needed for the hho generator. Most scientists say that by using the cars battery it wouldn't work because of the first law of thermodynamics or something (I'm not a scientist) I was thinking that a contraption could be built that would utilize these peltier devices located close to the exhaust pipe under the car. While driving, the hot side would face the pipe and the cool side would be cooled by the air traveling underneath the car. On most cars, you could probably use 50 of those devices. The trick would be to have them just close enough to the pipe so they don't get damaged while producing optimum electricity. Idk. I'm too poor to buy the parts needled for it but its a fun idea. As far as a campfire generator, I wonder if a Sterling Engine might be a better candidate for that type of operation?
With hydro-electric you need fast moving water OR a bigger wheel. Not easy but not the hardest thing in the world to make a spoked wooden wheel with a hatchet.
Why not use pc fan and use Neodymium magbets to power them to make a on demand electrical source to charge batteries? you could get 140 mm 24volt 2.3Amp pc case fan for 30.00 and use magnets to generate 55 watts constant.
Not "waste heat". If you are specifically using the fire to power the charger then it is not waste heat...it just HEAT. Heat produced specifically with the intention of producing electricity. Waste heat is what escapes that process. Now... If you had a wood stove, who's primary purpose was to use fire to produce heat for warmth or cooking... WASTE Heat would be that lost through the chimney.
Curious what the max Voltage and Amperage you got out of these chips in your design were? I know they are rated to reach 4.8v and 669mA under optimal conditions. ... But what did you get ?
They're just called 'TEG' chips or 'thermoelectric generator chips'. I can't link you, but you can find them on AliExpress. Should have 'SP1848' written on them
What is the highest temperature that the plates can handle? I am planning a sand thermal battery that will boil stream water to give me clean water and electricity.
I'm surprised you aren't using evaporative cooling. I would think it would maximize your cooling, though it would require adding water from time to time.
I had a few builds where I tried, but I couldn't get enough juice going to power the fan (higher voltage). I'm thinking I'll do a build where the fan is jump-started by a rechargeable battery to solve this problem
