Making Cooler/Generator with Thermoelectric Device

Thermoelectric Devices are fascinating! LET’S MAKE SOMETHING!

Below are my Super Patrons with support to the extreme!

Mark W. Bennett
Andy Rod
San
Alex B.
LordPi
Sam Lutfi

By: Mehdi Sadaghdar
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[applemachome]

He can talk about the benefits of the sponsors products/services as much as he wants but what sells me is the falling confetti

[MarioStoilov]

Linus tech tips posts a video "Bad cooling ideas" and features peltier devices. I watch the video and go "huh, wonder how these things work". Literally 5 seconds after that - notification from electroBOOM, new video :D

[FordFlatSix]

On an atomic level, temperature is created by the atomic structure vibrating. This vibration is caused by all particles in the material vibrating with electromagnetic and nuclear forces. This phenomenon is most visible when atoms slow down their "spin", or internal energy, the closer they reach absolute zero.

Since there are two materials with different thermodynamic properties but similar electromagnetic properties, the electrons can be shared easily between the two materials while still maintaining two different specific heat capacities. Once an voltage is applied to the two materials the electrons can flow to the material that they are attracted to. This will cause the vibrating electrons to leave one material the void of the electrons while the other material gains the vibrating electrons. This lack of vibrating electrons is what causes the electron deficient material to drop in temperature while the electron rich material has many vibrating electrons on it increasing its temperature.
This is why changing the voltage will cause the electrons to travel to the opposite material but having the same phenomenon.
The difference in voltage between the two materials creates a difference between the electron density between the two materials which then causes a difference in the thermal reservoirs between the two materials. This temperature drop is what allows heat to travel across the materials and electrons do not carry any of the heat themselves.

[instazx]

Mehdi: clumsily spends half a day cutting holes into wood to mount heatsinks into.
Also Mehdi: has 3d printer on back shelf.

[Caprum]

Someone needs to give him a noble award for the invention of the wife unit

[mikstr]

In all my years of carpentry I have NEVER seen anyone using a jigsaw while sitting

[charleslinlinker]

*Med holding any sharp devices*

Me: This can't be good.

[pietrococconi]

My axiety goes through the roof whenever i see him handling cutting tools in an uncomfortable way. I’m about to have a heart attack

[TheBrigadierPepis]

Your "Wife unit" explanation was amazing dude! hahahaha! <3

[mirokefurt]

WOW cutting and drilling like that !? - amazing you still have all your fingers !!!

[tommygarson]

He actually has a surprisingly accurate idea of what minecraft is

[bradfader]

I did the crash course in peltier units too haha. I had a small water cooled compressor and used a 8 peltier blocks with individual fans an a aluminium block milled to carry the water through an chill it. Turned out pretty neat. I used a 15 am buck down for my supply and found the most efficient supply an it worked fabulous.

[crjlife_]

The fact he still has all of his fingers always amazes me.

[BBROPHOTO]

I just thought I’d mention, TEC coolers are widely used within astrophotography for cooling camera sensors down to reduce thermal noise. It’s really common and they’re great. The main issue that’s showcased here, is the fact they cool *really* quickly, which can be a problem with icing over a sensor window.

[wheredidileavemycell]

my wife: her body is 1 million degrees and her heart freezes electrons

[uzairshah]

A Peltier module consists of two unique semiconductors, one n-type and one p-type, which are used
because they need to have different electron densities. The alternating p and n-type semiconductor pillars
are placed thermally in parallel to each other and electrically in series and then joined with a thermally
conducting plate on each side, usually ceramic removing the need for a separate insulator (Jamakandi et
al., 2020), when a voltage is applied to the free ends of the two semiconductors there is a flow of DC
current across the junction of the semiconductors causing a temperature difference. As the electrons
travels from P type material to N type material, the electrons hop to the higher energy state hence
absorbing thermal energy (cold side). Then as the electrons travel from N type material to P type material,
the electrons drop to the lower energy state and hence, dissipating thermal energy (hot side)to the
surrounding environment. The higher is the rate of dissipation of heat, the cooler it gets inside the
chamber (cold side of Peltier module) and increasing the efficiency of the cooling module proportionally
(Badgujar et al., 2015).

[diamondsnake]

11:37 - Grinder next to the balls looks scary. Fortunately this is not liveleak

[kale]

“it works like my wife. While her rest of her body is at boiling temperature, her feet are at absolute zero.”
that made me laugh hard

[abdoabdo]

the explanation of (how moving electrons through a thermocouple pumps heat) is:
in order to have thermocouple u should have two different material wires and they should have different numbers of electrons orbiting the nucleus at different orbits (say 3rd for wire 1 and 6th for wire 2)..and the wires are jointed at their ends
when u apply heat to the junction u r actually releases different amount of electrons from both wires and due to that difference u get the voltage difference and that is what we r using to measure temperature..
But.... when u apply voltage u r forcing the electrons to flow through the thermocouple and that is causing electrons from lower energy levels orbit to oscillate at higher energy orbits and vice versa. then an electron with its own energy is now orbiting at (Say) 3rd orbit and u put him to orbit at 6th orbit with its same amount of energy, it will oscillate much slower and the opposite will happen if an electron came from 6th orbit to 3rd... now we knew that due to applying voltage we ill make some electrons oscillate faster and the other oscillate slower and that movement is what we are sensing or detecting as heat ( higher oscillation means high temp. and vice versa).. i hope that could clarify something

[mattsmith]

That "wife unit" diagram at 0:54 had me laughing hysterically. 😂
Body >100° C
Feet absolute zero.