Heat to electricity - DIY experiments #9 - Seebeck and Peltier effects
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- เผยแพร่เมื่อ 19 มิ.ย. 2019
- • Our Facebook page: / diy.experiments.youtube
• Extracts of the video: Hi everyone, today, we are going to conduct some experiments related to thermo-electricity.
It's not a well known phenomenon but it will enable us to create an electric current with a temperature difference. It is called the Seebeck effect. And, reciprocally, we'll be able to create a change of temperature with an electric current, which is called the Peltier effect.
We'll join two metals and bring that junction to a certain temperature, then put a second junction, identical, but at a different temperature. It's very simple, but it should create an electric current.
It should be pointed out that each metal has a precise Seebeck coefficient, and that the iron-aluminium couple is, by far, the most efficient one, regarding common metals.
Okay, it hardly produces 3 mV for a 20 µA current only, but at least we've observed/confirmed the effect we were looking for.
You may always have a little more fun and put a couple of junctions in series, placed alternately at hot or cold sources level. But the production stays at about ten mV tops, making the power ridiculously low.
Fortunately, we can do much better than that, thanks to manufactured goods which gather many junctions with specific metals. They are called Peltier modules.
They can almost only be found in car electric coolers. They are used to produce cold from an electric current. But, of course, they're reversible.
I put my hand on one side of the Peltier module. The other one stays cold as it's pressed against the stone and we can already observe that more than one-tenth of a volt is produced with that temperature difference. We even managed to run an engine with four modules in series.
We just saw that there needs to be some heat transferred from one side to another to produce something. But, after a while, the cold side becomes as warm as the hot one. From there, the production doesn't get any higher. We can clearly see that the voltage reaches a maximum point before decreasing gradually.
To remedy this situation (ou « to solve this problem »), we are going to use a big computer cooling radiator (ou « a computer cooler ») which should prevent the cold side from warming up. But, as the radiator ended up getting hot himself, we've added a little fan.
We are also going tu use a little radiator on the hot side, so that the flame's high temperature equally spreads on all the junctions. It may look insignificant, but it considerably increases the performances and prevents that kind of things from happening.
Contrary to what one might think, to produce as much voltage as possible with a single flame, it is much better to use a single Peltier module, which can easily be heated very strongly. If you put several modules, the power spreads and it produces less.
Let's go a little further and see what we can get from the power of the sun (sun's power). To do that, we cover the side to be heated in black, and put a radiator on the other side, to disperse the heat. Some thermal paste to join the two sides and we're ready to go for the outside test !
In order to concentrate the sunlight (ou « the rays of the sun » pour vraiment faire ressortir l'idée de rayons, de faisceaux) on the module, we use a parabolic mirror.
But the solar panels have nothing to envy Peltier modules (ou « are far from being a poor second to Peltier modules ») as a solar panel produces 18 times the power of a Peltier module of the same size, in the same conditions. Yeah, that's right.
We are then going to use a digital thermometer. By the way, the top of the range thermometers work with metal couples. They are then referred to as thermocouples.
The more the junction warms up, the more voltage is produced. It's the Seebeck effect we talked about at the beginning of the video. We're going to use it to mesure temperature.
In fact, that limit corresponds with the moment when the heat, constantly transferred from the cold side to the hot side, is caught up by the heat going, through conduction, from the hot side to the cold side.
It is interesting to know that these Peltier modules efficiency is very poor. We've measured that the ones we used only get near a 1% efficiency.
Generally speaking, getting a good efficiency to transform heat in another energy is always going to be complicated.
We have the same problem with heat engines, like the Stirling engine, which can be compared to the Peltier module as we heat it on one side and cool it down on the other.
Even an idealized heat engine could not convert all the heat going through him...unless his hot source gets to an infinite temperature or his cold source is at absolute zero.
Still, heat engines are way more profitable than Peltier modules as their efficiency can reach 40%. - วิทยาศาสตร์และเทคโนโลยี
thats what my life has been missing.... alcohol powered speakers XD
Hi
th-cam.com/video/fOacM-syXGI/w-d-xo.html
He said its fake
What you say
Lol
@Aries Yael lol not really bud
thanks for the knowledge I always wonder if my gas water heater exhaust could be converted into some kind of energy just saying
pretty good! well-done brother!
Nice video. I actually have a mini fridge powered by one of those
He's back again.😊😊😊
You’re back!
Where did you purchases the fan - did you have any further info. or link pls. ?
is it okay if we use all-aluminum with some wires? plz reply i'm not a big brain electrical minded person. i need help!
Very well explained
How do you do the wirings on this contraption?
THANK YOU FOR KNOWLEDGE VERY GOOD IDEA I LIKE IT THANK AGAIN
How did you make that TEG flexible?
Very Nice experiments to understand
This could be use in a sterling engine for extra axillary power. Use it to power the displacer. I would think adding this would give a sterling engine some speed control .
How to buy tht white part can u drop the link
What is output current and voltage?
With 5 Peltier modules like yours connected in serie I can only reach 2.45 Volts which are not enough to move the fan (12V) any advice ? Thanx !
What happens when you try to use 10 Peltier modules? Would you get 24.50 volts?
If we storage it in battery we will get more volt or no?
Your use of a parabolic mirror to focus sunlight as a heat source reminded me of a thermionic sandwich that has a layer of ceramic material between two metal plates, one wire touches one plate and the ceramic and the other connector touches the other metal plate. Sunlight foucused on to one metal plate using a lens produces an electrical current.
I understood all of this perfectly, try using more professional language next time noob. gitgud
Free enegery. Look we are only bound by what we know.
Imagine if you get a magnified 🔎 glass. - a big one to capture the engery. And then you get loads of little ones to focus the light down to a very small beam.
You then focus that enegery, Heat onto a piece of given metal. Then boom you have free eletric. You would also add additional wind generator with water generator to pump to the plants to let them grow, and then you capture then gases to use as enegry and you could capture the heat from the actual plants themselves, moss, micro greens.
I am sure if you was to grow them in some type of vacuum chamber then it would produce pressure, which pressure is therefore enegery.
Same as heat from the micro greens or the moss which can be captured.
Have you ever felt the heat come from a layer of plant matter?
Jesus brothers once you see this.
Then you realise what is going on.
@@ricardocolon3674 What? What I said is perfectly true and is very similar to the experiment in the video. You're the noob.
Nice video
Savez vous que je peut finder des bonnes peltier generators dans Europe? Online etc. Je veux les essayer avec mon "camping stove" - minimum 2000 watt energy.
im very skeptical about this
however if this is true that it can run a computer fan, then my idea for a very small waste oil heater for a green house that gets very little sun in the in winter (poor planning on my part and moving it will be a giant pain in the ass) is more viable than I thought since getting power to it is difficult.
Thank you Very much for the knowledge video you made, have a nice day 🤗🤗🤗
Good try bro👍👍👍..thanks so much.. some advance entity said try magnetics or earth natural thermal we could get some free energy..💕
At what temperature peltier works
Hey some random dude here.. i'm wondering if i can make a heat with 12 volts or lower that can boil water in small container with less than 1/4 cup of water? Is is possible? And if not.. what alternative liquids with lower boiling point can i use?
I'm trying to make a small boiler engine in which the heat source comes from the energy generated by the boiler itself..
These types of machines have been proven to not work I'm sorry that boiler would just run out of heat it's not possible to make a machine that powers itself
Those are called "perpetual motion machines" and they are impossible. You'll find many scams online claiming that it's possible to make one, but it's not
It maybe possible, I might try and build something to produces enegery. Look we are only bound by what we know.
Imagine if you get a magnified 🔎 glass. - a big one to capture the engery. And then you get loads of little ones to focus the light down to a very small beam.
You then focus that enegery, Heat onto a piece of given metal. Then boom you have free eletric. You would also add additional wind generator with water generator to pump to the plants to let them grow, and then you capture then gases to use as enegry and you could capture the heat from the actual plants themselves, moss, micro greens.
I am sure if you was to grow them in some type of vacuum chamber then it would produce pressure, which pressure is therefore enegery.
Same as heat from the micro greens or the moss which can be captured.
Have you ever felt the heat come from a layer of plant matter?
Jesus brothers once you see this.
Then you realise what is going on.
@@killuminatikilla3235 Can never get more energy then the energy provided to it.
Nice
If I strike something like this can it generate electricity?
Merci 🎉😊
I guess evaluating TEC by their efficiency is not giving them due credit. However, their main advantage lies in the fact they are solid state heat transporter with decent dynamics (although they behave very badly through current inversion). It's a very important feature for high precision temp control or compact cooling solutions.
Yeah, clearly! But this video is not about TECs, the demo is about direct heat to electricity conversion. In some conditions TECs can have an interesting CoP, especially for their simplicity and reliability.
can u guide me in the way to produce 25 kw at home boss
Good
how do we consume electric energy from fusion & fission prosses
is this method applicable ?
Yes, used in space : Radioisotope Thermoelectric Generator, RTG.
Bro can you tell me where you get parabolic mirror?
It's a magnifying mirror (x5), probably for womans to make up (to be found in such aisle)
Hello team
May I know the device name which has been used to convert heat to electricity ..
TEC module
@@DIYExperiments thanks a lot for the feedback
How long does the electric last for before everything heats up to same temperature and stops making electric?
With the fan it's constant, so as long as there is alcool
GG le vocabulaire englais.
J'espère que la chaîne principale retrouveras beaucoup d'activité comme au passé.
😊👍
bonjour croisant baggete
In a hybrid car design, maybe a constant temperature is possible from friction component stoked further by wind drag...but another idea is just powering the right spectrum led, uv light, to power solar panels in a closed system with mirrors...maybe energy is amplified and it's possible to get more energy out than is put in, or at least it's converted to domino effect idea.
Fixing hot plate at 50 degrees and the heat sink, which thermoelectric module would produce more power: TEC1-12702, TEC1-12706 or TEC1-12710?
TEG would be better
@@DIYExperiments teg means?
How it is possible and please send
How to make
Would a higher temperature mean more energy output?
Yes, but shorter lifespan (this module isn't designed for sush temperature)
@@DIYExperiments Very interesting. Thank you for replying to my question.
So why not have the steam engine and pass the exhaust heat though Peltier modules?
2 in 1 👍
Mec j'ai perdu ta vieille chaîne 😭
Tes vieilles vidéos me manque
Incroyables Expériences :)
@@DIYExperiments MERCI
What happens if you stack these units on top of each other? Put heat on the bottom and haven't worked its way up to the top. Where you would cool that make any sense at all?
Less efficient!
Fbi:so you're choosen DEATH
Wouldn't a teg be better then a tec peltier to make energy?
Probably, to be tested!
@@DIYExperiments awesome looking forward to the video. I only asked because I have been watching and learning a lot of videos on peltier coolers. And I saw another video of a guy that mentioned the teg cooler 😉👍
You made much better than electroboom, nice video! I've made one too.
Yeah, and the 100k RPM isn't a fake ^^
@@DIYExperiments ok i removed the Fake word but in my opinion you never gone over 20k :D nice channel anyway, why aren't you posting nothing lately?
We reached 1600Hz you can check with the spectroid app ;)
It's from our french channel, we will translate vids gradually
@@DIYExperiments 1,6 khz in input but mechanical and magnetic losses aren't calculated, you have to check directly the speed on the motor, i have to try with a laser printer motor, they are very precise.
It's a sycronous motor, not an induction motor there is no difference... Please consider science before pretending to correct me :)
can this single peltier achieve 9-12 volts output if put on top of woodstove ?
Hi Dave, if this will help at all. Remember the Peltier effect ( difference in temperature between the two sides is what generate electricity ) wil be nullified as the two opposing sides moves towards the same temperature. Putting it on a stove will have that effect on the module. The challenge is to have as big a temperature difference between the two sides as is possible to generate electricity. It's a nice toy to play and experiment with but it's not an efficient generator.
COOOL!
Merci pour le texte écrit. C'est un bel effort en anglais mais notre accent français est toujours lourd. :)
Did you know this multiplies with the degree of atmospheric vacuum?
PS. In a vacuum, Water boils at freezing temperatures and can be at all three stages at the same time, liquid, gas, and solid.
can this pelter work for 1year without rest .. need answer
At this temperature gradient, definitely not! It's just for an experimental purpose, it withtands minutes.
@@DIYExperiments it will be 70 degree
Give me the order link
Had you purchased teg tiles instead of tec tiles you would have had a better result in your experiment.
TEC stands for: thermo electric cooler
TEG stands for : thermo electric generator
What if we stack teg and tac multiple time. Can we make a cooler and generator at the same time?
Anyone hear the 12 bar blues in the background ?
bang kayakmana caranya biar suhu nya ndak susah
I wonder how this can be applicable to a CPU self-cooling system.
Why did you stop uploading videos
I made it by myself. I used Avasva solutions for that.
How would this work with an electric stove I wonder 🤔
Do it without the peltier. Finally you are back i lov ur videos keep up
Or make you`re own peltier
@@Electroneer0 the first thing he did was make his own, and it was shitty
👌🖖
when you are breaking the speed barrier?
Next step!
You need use TGM-199-2.0-1.2
Imagine if we can eventually get a material efficient enough to get like 60-80% energy on a device like this
The efficient is bad also due to thermodynamics, impossible to beat 1-Tc/Tf
@@DIYExperiments do you have link for where you bought them the little pad like things
@@DIYExperiments Enter the magnesium/ magnesium aluminum alloy Peltier.. GAME CHANGER
the peltier only grabs the infra red heat ... which is why you can combine them with solar to get even more out of the sun beams
Hum, no, it's not a solar cell working with radiation, it works with heat conduction passing through!
The black tape converts the rays into heat.
@@DIYExperiments What do you think heats things up? What part of the spectrum? Why do you think solar cells heat up ? What could you use that heat for?
Because of thermodynamics, it's impossible to convert effcicienlty a low temperature heat into work, so the best we can do with the residual heat of solar cells (85% of the energy), is to use is as... Heat. For instance to heat up a house (there are hybrid panels).
@@DIYExperiments Or you heat a TEG .... which is what they are for. Yes, you need to cool the other part.. but you get the point. There is unharvested energy there. Ofcoz TEGs aint very effective... but still... could run the fan for the system and so on
The efficiency is absolutely awfull with low temperature, I managed to make a demo but output power is 16 times lower than a solar cell. The answer is "no", we will never harvest low temperature heat with TECs! It's 1/100000000 of being cost effective.
Sorry but your voltage does not decrease under load? 🤔🤔
Yes but the phone choses a current that prevents to fall under 4,5V. The charging current is low but it's works.
@@DIYExperiments you can change the fan if solar panels and rechargeable batteries so you will get about 3 hours to change the chance and fan
A candle is enough to to get power to a 1000sq feet house.
Each degree of temperature different generate about .35 voltage
Its not working. I really dont know what im doing bad
my question is, would it be possible to create a large scale model but the heat source is from the scourging heat of the sun?
Done at small scale at the end the the video!
I wonder why cars dont have these attached to the catalytic converter (hottest part in a car) and the ac compressor ( coldest part)
Mái nhà tôn và nền gạch can generate enough refrigerator and lighting on hot sunny day but must had la Phong to keep stable in between
mention the names also
Make new thing that spins faster
Soooo my laptop should be charged if I leave it on the stove for 30 minutes
They should put these in candles
I’m going to set my house on fire with a giant model of this contraption hanging over it, waiting to collect its energy!
There no way you do it lol
it is real or fake video
Hmmmm
I wonder if we can convert CPUs heat into electricity...
Refait des video comme avant
Imagine if something was made out of this technology that sat in a fireplace. How much electricity then?
Sensing is more effective
Sir try to this thing big place
Hot energy from the sun please
It's done in the video...
Use magnifying glass and solar heat
Watch the video ;)
Copper and aluminum
Your focusing on the wrong thing, colder is better and no limit to how cold it can get vs only 500 to 700 F for the hot side. You only need a temp diff of 150 to get the 5 volts 1 amp.
Not clear?
What about converting palm heat into energy while keeping the phone in your hand 🤐
Not enough power and it would require energy to dissipate heat (fan) in order to maintain a temperature gradiant
Nice, creative idea though, maybe someday.
Bro is that true
i don't believe one tec can do all this. it's not even a teg
Anyone you to make the substance ok
Hi
once peltier is worn out its DIY shitey. It's like building a minature generator but it is in permanent magnet.
Don't understand?
If the heat is drained properly in order to maintain a heat flux then it works permanently
@@DIYExperiments You're way of thinking is too simple the cancer of technology progress. Like tesla car and permanent magnet generator. Just stap and stray away from science and give people who really give a damn about it a favor. Do some Monopoly life game or some shit.
...
So I put in car cylinder somehow and charge my battery 😅
Don't waste your money on the 3055 Transistor, witch is the 3rd one it produces 0 voltage don't be fooled 😢
3:16 blahhhh
Press it you wont be disappointed
Autant j'ai le même accent, autant 8 min comme ça deviennent vite pénibles en fait je me rends compte, sincèrement.
La production des phonèmes n'a pas du tout lieu au bon endroit dans la bouche, c'est une grande différence entre le français et beaucoup d'autres langues.
C'est mieux sur les vidéos plus récentes je pense, curieusement ça embête surtout les français (parce qu'on s'imagine faire l'exercice et c'est gênant)
Je détecte un français :)
The voltage producing ok, but what about Watts . The fan consuming less watt, but the music system consuming more watts.so you making fools