Campfire & Wood Stove Thermoelectric Generator - Phone Battery Charging (Waste Heat)
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- เผยแพร่เมื่อ 16 พ.ค. 2024
- Portable charging options for electronics, phones, and battery banks are becoming more and more useful, as more devices permeate our lives even out in the rural backcountry wilderness. In this video, I take a look at thermoelectric generators specifically--using TEG chips combined with water and air cooling to charge electronics with your campfire, wood stove, twig stove, or other heat source, using waste heat!
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If you want to charge something with a higher voltage than your charger's output, you'll need a boost-style charge controller:
Boost Converter Solar Charge Controller: MPT-7210A
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Thermoelectric Generator (TEG) chips with max 4.8v at 0.669A with a 100 degree temperature difference
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DC USB Buck Voltage Converter - 6.5-35V to 5V 2A with USB port
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100mm x 40mm aluminum heatsink used for two-chip air-cooled design
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Cheap heatsink I used for aircooling - Gammaxx 300
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The multimeter I use (AstroAI Digital Multimeter)
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Thermal adhesive
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BioLite Wood Stove, pre-existing twig stove with a built-in 3W TEG charger & incorporated 2600 mAH battery
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Can you please to a how to do part ?
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.
This is so freaking awesome GJ!
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.
Really really cool
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.
really interesting man. nice.
Would love a build video!
u inspire me to make yt channel I name it after u
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.
New sub
Sure, a how to build video could be informative and entertaining.
i would love to build one for my rv so i dont need a gen anymore
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 ?
About half voltage if I remember correctly
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.
150c. If you need hotter, hi-z brand can do 350c
what if you put two on the bottom of the ash pan of a wood stove, with the heat sincs in a small container of water?
Nah, I don't think that would work
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.
Can you please tell me , minimum teg required to charge the phone.
Most standard USB phone charger bricks charge at about 2A; and USB voltage is 5V. So that works out to 10 watts (5v x 2a).
I imagine when these get more advanced, putting them in your clothing tonight only cool you down, but also charge your devices especially while hiking
How to build please
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.
From the magnets? No, I don't think it works that way, sadly
@@MikeInTheWoods Have you tried it before?
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?
What if you made a water cooled one that uses a bump pump. That way all you need is stationary water to get it working.
bump pump?
@@MikeInTheWoods sorry I meant ram bump
for anyone else who reads this and is still confused, he means a ram pump
And despite his inability to say "ram pump" - it is actually a brilliant idea.
What are the names of the chips please
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
Now just use an Einstein Refrifgerator, heat powered evaporative cooling, to create ice to do this 😂
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.
Ok so hear me out, what if you take a lot of those things(and I mean a *lot*) and use it to recycle the heat used by a PC?
Eh, it wouldn't be as efficient/effective as you think
@@MikeInTheWoods What's the main problem? Lack in temperature difference?
@@crazzy88ss precisely
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.
The way I've seen it done is by using bark for the paddle wheels. Xander Budnick did a video where he made one to cook a chicken rotisserie style
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.
Quintillion and quintillion dollars business
Use a PC fan
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
It's all fun and games if you have sh*t load of money