😯😲👍 interesting presentation of peltierc cells !

Very cool! I know you selected two different models of module, but the lettering on the two showed that one could handle 15 amps maximum and the other could handle 6. This is something to keep in mind when dealing with activities including a higher number of amps. I really enjoyed the video!

Best Tutorial .. continue and Keep it up your teaching Technic.. Thanks for make it very easy..

Someone thought that connecting one peltier to 12V and one to 5V was wrong and that peltiers did not work at lower voltage. Well, they work just as well at lower voltage, but of course the power gets lower. A peltier is a resistive load, so lowering the voltage to 50 % will decrease the power to 1/4. In this case, going from 12 to 5 V reduces the power (and heat) to about 17.4 %. And doing this to the upper (colder) peltier is necessary to acheive the low temperature. The lower one, the one connected to the heat sink, must move both modules´ dissipating power to the heat sink. So, if both have the same electric power the lower one will have to move both its own total power PLUS the same power generated in the upper one. This makes it much warmer on its "cold" side. The result would be about the same as with only one peltier unless you add some water cooling or so, which is very unpractical if you plan on building your own wine cooler, camping cooler or freezer. However, when having just 5V applied to a 12V peltier the power is only 17.4%. So the lower peltier will only have to transport 1.174 times its own power. This makes the cold side a little bit warmer than normal, but not much. And then the upper (low power) peltier will have a fairly cold hot side, much colder than room temperature. And that means its cold side will get pretty cold, like in this video. However the cooling POWER will be rather low because the low power of the upper peltier. Let´s say you build a cooler in which you place a sixpack of beers and you want to cool them from 25 C to 10 C. With the stacked peltiers it will take much longer (because of lower cooling power) than with a single peltier unit at 12V. However, with a single unit the temperature will not go much lower than 15 - 20 C below room temperature at all (using normal isolation material), while the temperature will continue to get lower with the stacked peltiers, way below the freezing point but very slowly. In the video only the surface of the peltier is cooled, which is very different from cooling several liters of beer, wine, milk or food. So, with one peltier you get a decent efficiency cooler for food and drink if you only need cooling, not freezing. With stacked peltiers like in the video you get a low efficiency freezer. So, a coolbox with stacked peltiers will take longer to reach 15 C below room temperature, however it will keep getting colder until far below the freezing point if the isolation of the box is efficient. So, if you want a freezer to keep one package of ice cream frozen, this might be a way to do it. However, if you want to cool down a lot of beer cans 10 - 15 C below room temperature in a reasonable time, a single unit (or more in parallell) is a better choice. About the parallell setup, there is a theoretical discussion using an interesting software here: kzfaq.info/get/bejne/ebujoK5z0NfXiok.html , about ten minutes into the video. The calculations indicate that putting more peltiers in parallell while lowering the voltage / power will increase their efficiency. A simple way to check this without having a multiple voltage source would be to use four of them, two in series and two such pairs in parallell. Then they all get 6V and the total power will be the same as with one peltier at 12V. Then build a cooler where you can use either setup. Cool down a certain amount of room temperature water (a liter or so) to 10 C below its initial temperature. Check how much time it takes. Then do the same with the other setup. Will it be quicker with the four in parallel than with just one peltier? It would be an interesting experiment to check if his theoretical results are correct.

Impressionante! Eu não consegui baixar a menos de 0°C. Parabéns!

Peltier is a genius

more effectively you can cool the hot side of a peltier the cooler the cold side will get, so stacking is an incredible way of making one of the peltiers super cool, well done, think i could actually make a Mini AC using that sort of temperature and super hydrophobic sprays to prevent condensation build up and frost on the pipes / peltier

Good idea 👍👍👍

Thanks for sharing this. This totaly works just with two different peltiers. Same peltiers wont make much difference

Super! Thank you very much!

Nice demo, thanks.

I didn't expect it to drop temp so quickly. That's awesome! I guess that cheap dozen pack of Peltier modules I have in the "Save for later" section of my eBay shopping cart should be moved back into cart.

Awesome bro😍😍😍🤩🤩🤩

This is a good way to make a cloud chamber.

Good job ;-) But if you stack a smaller element on a bigger one which is able to remove more of the waste heat you wil get much deeper temps.

Thanks man for this video it's really awesome! to reach this level of temp in cold side! but could you tell us what was the room Temp and Humidity ? I am asking this because I tried it with room temp =27 RH=40% and the result in cold side was -4 C. I used the lowest with 12 Volt and the upper with 5 Volt..but I could not achieve ur result! Any recommendation please?

Nice

hey i like your videos very much..i have 2 tec1-12706 peltier and a 12v 10a supply power..how to connect peltier in series of parallel? and in which condition i will get maximum cooling?

Great video The full power consumption shows 91.4 watts My qustion is, what is the time running to consume 91.4 watt? In other words , what is the power consumption in watts per huore for this system?

what you do is mount the peltier on a piece of insultaion...put heat sinks fans on each side... duct the unwanted air from the outside of your cooling zone...then recirculate the inside-an open air of sorts. the quesiton is how strong is your fan ? how much air do you wish to circulate ? a standard room is 800 cubic feet. these little cooling fans on pc's circulate 42 feet per minute at max power.so a rig would require 15-16 peltier systems to effectively cool a room ....you get the idea

Eszembe sem jutott volna termálisan sorbakötni két elemet. Tudom, ha jelentősebb felület van a hideg oldalon, már nem is lessz olyan hideg, de legalább ki van használva a +5 és a 12V is a tápnak. Szép ! A fékelők meg a büdös életben sem építettek ilyet, látszik hogy sem tapasztalatuk sem műszaki vénájuk nincs, mindenesetre köszönöm a tippet, én még csak thermál-párhuzamosan kötöttem két 12706-ost, teljes cpu-terhelésen sem fő szét egy deka core tablet - ezért készült az enyém. A hatásfoktól mindenesetre nem vagyok elragadtatva, ha lakást hűtenénk vele ingünk gatyánk rámenne a vellanyszámlára sajnos . . . Fene egye meg, csak nem sikerül a kompresszoros légkondikat überelni !

Can we use a separate peltier module out of main peltier module system to cool the main system's peltier by adding some water, water pump and metal pipes running at hotter side of peltier of main module...??

Plz tell how do i lost heat If like whole system placed in a packed bow and fan facing outside

-40°C that's deep freeze. Nice job it gives me bigger ideas.

please i need to know how much heat removed from the cold side in KW

how many peltiers does it take to cool 100 litre deep freezer to -25 deg.and what will be the power consumption?

I have tec1 12710 and 12706. What can i do to make it colder

can u make air cooler out of it with 1ft exhaust fan which can be use practical

How much temperature that this machine can reach if we use it in 3x3 room, does this machine can lower the temperature of the room to 18°C ??

Hello What about connecting peltier directly to solar panel How many panel of 250w i need?

Can i connect 2 modules ( 12706 ) in one 12v 5A smps..? It ill work properly..?

dimana kamu bisa mendapatkan headsink seperti itu? i mean your old CPU cooler

Can i use the model sp1848 peltier for this or not?

What happens if I run 12706 peltier for 20hours

Which type of heat sink did you use

In the electric wiring diagram, you did not mention how many volts did you apply to each module (like you did in your part 2 video). Can you kindly confirm if it was 12v and 5v respectively? Thank you :)

How long we can run this thing

Why are the 5v and GND soldered together?

How much rpm to cold the hot side of peltier?

Sir ye itam kaha milenge mujhe project bana na hai ic nhi mil rahi

Can we use powerbank instead of 300w dc power supply

Wow, I did not expect -40 C. That's really awesome! Was using 2 different models of modules on purpose? Is it advantageous to mismatch?

This is very intriguing and I am going to experiment myself. Though it begs the question - if you can achieve such extreme, low temperatures easily with inexpensive, off the shelf hardware, drawing just a couple hundred watts, then why do the refrigeration and A/C industries continue to use big, inefficient oil compressors?

How much power you give to the peltier?

how do you remove the heat? i'm looking for something that's cheap and powerful enough to cool my apartment which is in Malaysia.

I don't see where you stacked the peltier?

Sir isko kitni der tk chala skte h lagatar...

Word of advice yellow front on a white background was a horrible idea its hard to read

Actually your dont need different peltier module to stacking it,all your need is different power supply,your can run the 12706 peltier on 5v

You need to put a heat source on the peltier, like a cpu, and compare cpu temps. A peltier often can't transfer enough power to the other side...

PLEASE SHARE WHEE CAN I GET THAT COOLER?

I bought 5 and i cooler them with water but i only got 3 grades min. with 27 grades in the room. How do you get the peltier so cold??

Wouldn't you want to put heat syncs on the hot side to dissipate faster? Would that reduce current draw?

Bro can u plZ give me one piltier module air conditioner diagram or procedure ?

Amazing, i wanna try with 12715 + 12708. I'm trying to sub zero my CPU has fast as possible.

Hello, I have a question. Why must the lower module have higher cooling power than the upper module? Is it used to keep the upper module cold so that it wont overheat and burnt?

Piz tell me the temperature of hot side

Aonde compro está pastila

Hey Ernő. Thanks for your amazing kit and sharing with us. Today ı use the same peltier modules and assembly with a huge cooler fan with copper pipes but could not read the minus degree like oyu. Only with 12715 i saw the -16 degree than put the 12706 on it with a thermal grease like you. But i detect -2 dgree which is worse than single peltier. I m using a 300w power supply. What should i check to find the problem? Thanks for all.

Where to buy

Is it best to hook the Peltier devices in series or parallel?

The real question for how long can it sustain these temperatures.

What is this video about?

hey!! can you tell me that how long can this system work continuously without any breakdown

Sir ye peltier kidar Si miltay ha

Man what's your room temperature?

Use a thermocouple. The IR thermometer is not accurate if you don't know the emissivity of the surface you are measuring.

Can it run 24 hours? What is advantage and disadvantage like over use or over heat?

The module that is connected to the red wire from the power supply is only being provided 5 volts. I recommend connecting the red wire of each module to the yellow from the PSU. This should allow for lower temperatures.

buat motor coba bang yg pakai water coolant

Were you getting frosting? I would've expected to already have started (in the demonstration's time duration).

I dont understand what is happening?

Yah continue kitne a ghante on kar sakte hain yah Gajab fridge on rahata hai 24 ghante continue to yah bhi 24 ghante continue on kar sakte hain please tell me

esto funcionaria si tengo los dos módulos iguales ?

That's a Molex connector not a SATA connector.

What are the amparage of tec1 12706& tec1 12715

How hot did the other side get?

I can't achieve even 0 degrees. Iam using 6 volts with 3 Amps. What is my problem ? Ive used cooler and heat sink as you did !!!

Awesome! Does the lower module need to be higher current? or can they be the same (12706)?

What about 10 of these stacked together?

i have only one 12v batery but i have to connect 2 CPU fan and 4 peltier module 12706.but each required 12v power supply.i dont know how to connect it.

One module runs 5 volts. the other runs 12 volts...

that's not how the thermometer is supposed to be used....turn it on for a few seconds then let go...if I hold the trigger on mine the temperature will continue in the same direction...meaning if something is cooler or hotter than the surrounding environment...air...it will continue past its actual temperature after a few seconds even when taking the temperature of the air coming out of the ac vents at a known temperature..I have seen it go 30f past the known temperature of the refrigerant flowing through the ac evaporator coil using gauges as I am a hvac tech..which is impossible because the refrigerant can not get that cold in a properly working ac system in houses because of the condensation that forms on the evaporator coil while blowing hot and humid saturated air over the coil will cause it to freeze and block the air from passing over the evaporator thus preventing it from doing its job and cooling the air...using this is not the same as a hand held thermometer everyone is used to...this is no different than the thermometers used in dr office or hospital in the ear...and they literally have it on for 1 sec to get an accurate reading...you will get false readings if you hold it on for an extended period of time because it senses infrared radiation and not the actual temperature itself like a regular thermometer...take a few short burst readings and then average them for the true temperature if it's a critical measurement...everything in the universe gives off infrared radiation so getting false readings is easier than my ex girlfriend...I swear that bitch had springs on her thighs that prevented them from closing...

Wait where is the hotter side plz do tell

So if you run one module by itself, you would still have the writing facing up for the cold?

Help! Can i use this power supply to run only one peltier? I only have a 12v 20a power supply but on the specs of my peltier says that max amphere that i can use is only 6.1a. is it safe?

Hii bro I have a question why u have used 300w power.supply n how you calculated watts of Pelter module fan and DC motor I have stuck here do help 😳😳

Magyarul nincs videód?

Am i the only one who thinks that the circuit diagram was wrong (molex connector) because one of them is 5v and one of them is 12v & awesome knowledge this things does not work with 5v DC power. I am just saying I don't know exactly how it works

So can anybody explain what is this ??

Two pelter valo and how it construct

Is this reading for real, how come i can’t even get 0• C on my reading.?.

How about I stack 12708 module on a 12712 module on a 12715 module? Any way to get a little colder? Lol

How 's long time it will keep his temperature .. and if it will produce 4v electric then please reveal me duration of current flow

Rapa eu consegui por no máximo -9

You know It won't stay at -41c when actually cooling a CPU. The CPU heat would overwhelm 2 peltiers. 12 pairs of peltiers with an equally wide heatshink might cool it to 0 Degress.

you are supposed to connect both cells to 12v, not one 12v and other 5v

I need to get -180 °C. Its possible?

So what was the temp? C isn't a standard measurement most people use F

Actually it is an inverse Peltier effect. Isn't it?