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: ruclips.net/video/CUsmKBkqsZU/видео.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.
It could be said simpler. 1. Power proportion of stacked Peltier elements depends on temperature difference symmetry regarding "room" temperature - if cold side difference needs to prevail, then respective cold-side element should be less powered than hot side one, but as temperature difference get closer to symmetric, so does power of elements. 2. Preference of stacked ("in-series") versus standalone or "in-parallel" design depends on required temperature difference - generally, up to about 30 kelvin standalone/parallel is preferred, above that value - stacked one.
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
Stacking peltiers does make the final temperature colder, however, stacking greatly reduces the heat transfer speed. Let's say you could transfer 40W of heat with one peltier, with two stacked that would fall to 5-10W.
Exactly, but I guess the cooling power is a bit low to make alcohol super saturated clouds, ( I mean it needs to first cool down the vapors -which needs energy- to then be able to show the particles.
@@amirreza6526gd ruclips.net/user/shortsUjf6JYdU0Nk ruclips.net/video/LwN-asR4km8/видео.html I didnt get that electromagnetic field around to make it more visible but it works so it went good i think
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?
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!
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?
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 !
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?
because phase change heat pumping is MUCH more efficient than peltier heat pumping (300% electrical efficiency vs 5% electrical efficiency) Peltiers have a lot going for them but overall efficiency isn't one of their advantages and whilst they work ok in small sizes, this means they don't scale up very well
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
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.
@xcubetech2782 I have a question,ima be making a phone cooler fan(ima get heatsink(copper),peltier(12703 or 04,fan(8600rpm),I was wondering it says Qcmax 12volt/18 watts and the other 12 volts/36watts,what would that be? I currently have a 25watts phone charger,would a 60watts help make it colder
The lowest attainable temperature depends on many things. From the room temperature, the cooler design, the heat conducting paste. It is important that the lower module has a higher cooling power. The lower module operates from 12 volts, the top 5 volts.
Hi Ernő, I have a 1000 watt psu, and run a 220 watt 9590 amd setup and a rx 580 (cannot remember what watt it uses) I also run a water loop and have a peltier kit in, but the peltier doesn't get very cold, so I don't know what to do next, would it be worth getting a second one so that the bottom one gets sufficiently freezing? I wanna super cool the cpu via the loop, the peltier coupling block is a Liquid pass thru piece Any ideas I can do that may help improve things?
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 :)
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.
The cooler covers the entire surface of the lower module. The hot air leaving the cooler must not return to the modules. Check the correct connection of the modules. After applying the coolant grease, the modules must be strongly pressed.
The pictures show the type of modules, cheap chinese modules. The lowest attainable temperature depends on many things. From the room temperature, the cooler design, the heat conducting paste etc.
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...??
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
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?
The degree of icing depends on the air humidity. The video was made in a dry and cool room with low humidity. The amount of icing you see at the end of the video should take a longer time.
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.
Try using two stacks of two modules. Wire the two lower modules in parallel, and the upper two in series. That way the lower two will have 12v across them and the upper two will have the potential divided to 6v each.
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?
The dissipated heat of thermoelectric module from the hot side is the summation of the input electric power and the absorbed heat from the cold side. The dissipated heat is always large and around 3 times the absorbed heat. When stacking Peltier modules on top of another, you have to make sure that the dissipated heat of the top one is less than or equal to the cooling power of the lower one.
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.
Purnima Dasgupta , reasonable question. I have the same thinking as I would like to build peltier-based aircon for very small room. My guess is: as long as the HOT side is being cooled enough (probably by watercooling block with circulated water using mini submersible pump plus radiator and fan) - the system could works for long enough time to cool down the small closes space.
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...
Mostafa Mohamed Peltier modules are solid state heat transfer devices, typically used to cool CPUs in gaming machines. They could be used to make fridge/freezers without bulky compressors.
It is important that the lower module has a higher cooling power. Module 12706 can also be used, but then the attainable temperature will not be this low.
the Lower Module has to cool all the heat the higher module has transported PLUS the heat the higher module produces itself(waste heat) then the used cpu cooler has to cool the originally transported heat plus the waste heat of the first module plus the waste heat of the second module.
whatever the power supply current, the load will only use the max current design.. even your psu gives 30 amps, the peltier will pull only the needed amps..
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
Each degree that one side downs, the other increasses the heat those degrees and a bit more. (Sorry if i didn't explained it very well, i'm not english)
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?
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.
It's hard to say. Decreasing temperature dramatically changes effectiveness of the elements. There is no definite theoretical limit, but the practical limit is about -100°C.
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What the fuck!! Seriously??? Two peltiers in this order: Hot face to disipator and cold face Peltier 1 in hot face of Peltier 2,results in cold face Peltier 2 out -40°!!!!???
![The best (cheap) Peltier module [test 2]](http://i.ytimg.com/vi/WIf339WNyOo/mqdefault.jpg)
![The best (cheap) Peltier module [test 2]](/img/tr.png)
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:
ruclips.net/video/CUsmKBkqsZU/видео.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.
It could be said simpler.
1. Power proportion of stacked Peltier elements depends on temperature difference symmetry regarding "room" temperature - if cold side difference needs to prevail, then respective cold-side element should be less powered than hot side one, but as temperature difference get closer to symmetric, so does power of elements.
2. Preference of stacked ("in-series") versus standalone or "in-parallel" design depends on required temperature difference - generally, up to about 30 kelvin standalone/parallel is preferred, above that value - stacked one.
@@rvrss7192 That is not simpler.
@@dozog HAHAHAHAHAHAHA =))
wooh jesus wall of text. Please learn how to use paragraphs.
Fantastic breakdown. Clarified my understanding of what I was I was trying to achieve. Thanks
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
Stacking peltiers does make the final temperature colder, however, stacking greatly reduces the heat transfer speed. Let's say you could transfer 40W of heat with one peltier, with two stacked that would fall to 5-10W.
Peltier is a genius
😯😲👍 interesting presentation of peltierc cells !
This is a good way to make a cloud chamber.
And thats why im watching it
Exactly, but I guess the cooling power is a bit low to make alcohol super saturated clouds, ( I mean it needs to first cool down the vapors -which needs energy- to then be able to show the particles.
@@Psychonauta how did it go?
@@amirreza6526gd ruclips.net/user/shortsUjf6JYdU0Nk
ruclips.net/video/LwN-asR4km8/видео.html
I didnt get that electromagnetic field around to make it more visible but it works so it went good i think
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?
Best Tutorial .. continue and Keep it up your teaching Technic.. Thanks for make it very easy..
Thanks
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!
Thanks for watching.
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?
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 !
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?
Low temperatures are not equal to high cooling performance.
temperature difference is the thing that decide it's cooling performance. 12715 is around ∆65degree Celsius maximum
because phase change heat pumping is MUCH more efficient than peltier heat pumping (300% electrical efficiency vs 5% electrical efficiency)
Peltiers have a lot going for them but overall efficiency isn't one of their advantages and whilst they work ok in small sizes, this means they don't scale up very well
Thanks for sharing this. This totaly works just with two different peltiers. Same peltiers wont make much difference
Yes, if the lower module can conduct all the heat generated by the top module then the type is not important.
Super! Thank you very much!
How much rpm to cold the hot side of peltier?
Wouldn't you want to put heat syncs on the hot side to dissipate faster? Would that reduce current draw?
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
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.
Matthew Wilson banggood is maybe cheaper
The real question for how long can it sustain these temperatures.
it depends on voltage that u r giving
Impressionante!
Eu não consegui baixar a menos de 0°C.
Parabéns!
Word of advice yellow front on a white background was a horrible idea its hard to read
How much power you give to the peltier?
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
entre peltier y peltier pasta termica?
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 !!!
18w of power won't run smtg like that lul at least 60w for 12706 and 120w for 12715
@xcubetech2782 I have a question,ima be making a phone cooler fan(ima get heatsink(copper),peltier(12703 or 04,fan(8600rpm),I was wondering it says Qcmax 12volt/18 watts and the other 12 volts/36watts,what would that be? I currently have a 25watts phone charger,would a 60watts help make it colder
Is the air moisture free ?
Use a thermocouple. The IR thermometer is not accurate if you don't know the emissivity of the surface you are measuring.
Very good point. Those IR thermometers are frequently used by people who have no idea. "What the display says must be the actual temperature"
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?
The lowest attainable temperature depends on many things. From the room temperature, the cooler design, the heat conducting paste. It is important that the lower module has a higher cooling power. The lower module operates from 12 volts, the top 5 volts.
Ernő Némethy They both operate at 12V DC, but the 12715 one draws an amperage of 15 whereas the 12706 only uses 6 amps
In this circuit the lower module operates from 12 volts, the top 5 volts.
Oliver Thorèn Because it's the way he connected the peltiers..
I guess that sata connector can supply 12v and 5v from the PSU.
Hi Ernő, I have a 1000 watt psu, and run a 220 watt 9590 amd setup and a rx 580 (cannot remember what watt it uses)
I also run a water loop and have a peltier kit in, but the peltier doesn't get very cold, so I don't know what to do next, would it be worth getting a second one so that the bottom one gets sufficiently freezing?
I wanna super cool the cpu via the loop, the peltier coupling block is a Liquid pass thru piece
Any ideas I can do that may help improve things?
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 :)
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.
The cooler covers the entire surface of the lower module. The hot air leaving the cooler must not return to the modules. Check the correct connection of the modules. After applying the coolant grease, the modules must be strongly pressed.
Ernő Némethy i decided to buy quality expensive peltier modules. Because i couldnt reach nore than -14 celsius. Are you using chinese cheap peltiers?
The pictures show the type of modules, cheap chinese modules. The lowest attainable temperature depends on many things. From the room temperature, the cooler design, the heat conducting paste etc.
PLEASE SHARE WHEE CAN I GET THAT COOLER?
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...
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...??
Good idea 👍👍👍
Amazing, i wanna try with 12715 + 12708. I'm trying to sub zero my CPU has fast as possible.
Please God watch out for condensation
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
-40°C that's deep freeze. Nice job it gives me bigger ideas.
it's a fake ..... no way u can reach -40
@@kalaithebat Did you try it ?
yes ... it's a total crap .. fake
Depends on your room temperature and design
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?
What happens if I run 12706 peltier for 20hours
Two pelter valo and how it construct
How many dc volt given
I have tec1 12710 and 12706. What can i do to make it colder
dimana kamu bisa mendapatkan headsink seperti itu? i mean your old CPU cooler
how many peltiers does it take to cool 100 litre deep freezer to -25 deg.and what will be the power consumption?
Awesome bro😍😍😍🤩🤩🤩
Sir ye itam kaha milenge mujhe project bana na hai ic nhi mil rahi
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.
Just not going to cut it as peltier are notoriously NOT efficient in terms of power consumption
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??
The lowest attainable temperature depends on many things. From the room temperature, the cooler design, the heat conducting paste etc.
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.
Sir isko kitni der tk chala skte h lagatar...
Hello
What about connecting peltier directly to solar panel
How many panel of 250w i need?
I don't see where you stacked the peltier?
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 ??
Were you getting frosting? I would've expected to already have started (in the demonstration's time duration).
The degree of icing depends on the air humidity. The video was made in a dry and cool room with low humidity. The amount of icing you see at the end of the video should take a longer time.
I dont understand what is happening?
Sir ye peltier kidar Si miltay ha
Can i connect 2 modules ( 12706 ) in one 12v 5A smps..? It ill work properly..?
Which type of heat sink did you use
Is this reading for real, how come i can’t even get 0• C on my reading.?.
Nice demo, thanks.
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.
If two identical modules are placed on the top of each other, the upper module must be connected to a lower voltage.
Try using two stacks of two modules. Wire the two lower modules in parallel, and the upper two in series. That way the lower two will have 12v across them and the upper two will have the potential divided to 6v each.
@daffygrey I have a 25watts charging box with usb,would a 60watt charger increase irs coldness?
What is this video about?
Can i use the model sp1848 peltier for this or not?
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?
The dissipated heat of thermoelectric module from the hot side is the summation of the input electric power and the absorbed heat from the cold side. The dissipated heat is always large and around 3 times the absorbed heat. When stacking Peltier modules on top of another, you have to make sure that the dissipated heat of the top one is less than or equal to the cooling power of the lower one.
What are the amparage of tec1 12706& tec1 12715
the last two numbers. 6 and 15 respectively. first three numbers are the amount of connection points between the different alloys.
Why are the 5v and GND soldered together?
Piz tell me the temperature of hot side
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.
The dissipated heat of the upper module will be too much. The lowest attainable temperature will not be less than -20°C.
please i need to know how much heat removed from the cold side in KW
Can it run 24 hours? What is advantage and disadvantage like over use or over heat?
I did not use it for a long time. During the one hour use, it did not overheat.
How long we can run this thing
200,000 hours operation
hey!! can you tell me that how long can this system work continuously without any breakdown
Purnima Dasgupta , reasonable question. I have the same thinking as I would like to build peltier-based aircon for very small room.
My guess is: as long as the HOT side is being cooled enough (probably by watercooling block with circulated water using mini submersible pump plus radiator and fan) - the system could works for long enough time to cool down the small closes space.
Wait where is the hotter side plz do tell
The one that stick to the heatsink
you are supposed to connect both cells to 12v, not one 12v and other 5v
The top one will heat the bottom one and u can't get that low temperature
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...
So can anybody explain what is this ??
Mostafa Mohamed Peltier modules are solid state heat transfer devices, typically used to cool CPUs in gaming machines. They could be used to make fridge/freezers without bulky compressors.
That's a Molex connector not a SATA connector.
Plz tell how do i lost heat
If like whole system placed in a packed bow and fan facing outside
Actually it is an inverse Peltier effect. Isn't it?
Man what's your room temperature?
esto funcionaria si tengo los dos módulos iguales ?
Yes, it works.
So what was the temp? C isn't a standard measurement most people use F
°C is standard unit for most people.
Most people are outside the US, and use Celsius.
At -40 degrees, the Celsius and Fahrenheit values coincide. -40C = -40F
Awesome! Does the lower module need to be higher current? or can they be the same (12706)?
It is important that the lower module has a higher cooling power. Module 12706 can also be used, but then the attainable temperature will not be this low.
the Lower Module has to cool all the heat the higher module has transported PLUS the heat the higher module produces itself(waste heat) then the used cpu cooler has to cool the originally transported heat plus the waste heat of the first module plus the waste heat of the second module.
Okay, I understand, thank you. Very nice.
Just asking..ya...if i use power supply 12v 30 amp for peltier 12706??can it boom??
whatever the power supply current, the load will only use the max current design.. even your psu gives 30 amps, the peltier will pull only the needed amps..
Bro can u plZ give me one piltier module air conditioner diagram or procedure ?
Where to buy
Amazon
What about 10 of these stacked together?
It does not work because the upper module has to be less power than the underside.
Or else too much heat is generated inside each module, right?
That's correct.
That is why the upper module is powered by 5 volts instead of 12 volts DC.
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
One module runs 5 volts. the other runs 12 volts...
How hot did the other side get?
Each degree that one side downs, the other increasses the heat those degrees and a bit more. (Sorry if i didn't explained it very well, i'm not english)
So if you run one module by itself, you would still have the writing facing up for the cold?
Yes
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?
yuta yano yes bro.. it's safe.. you can use.
I can use it overnight? Because i will use it for daily purpose 😅
Yes you can use over night....
But careful after few hours ice will block your heatsink. Because you are using 20 amp or full power.
How can i resist the ice? Even i use a high powered fan direct to the heatsink to spread cold air?
And can i use the model sp1848 peltier for this?
Magyarul nincs videód?
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.
I need to get -180 °C. Its possible?
It's hard to say. Decreasing temperature dramatically changes effectiveness of the elements. There is no definite theoretical limit, but the practical limit is about -100°C.
You need better module...
Nice
Thanks
How 's long time it will keep his temperature .. and if it will produce 4v electric then please reveal me duration of current flow
The circuit stays stable for a longer period of time.
I do not understand the second part of the question.
Longer period of time mean to say .. how's long
I wanna know how many days it will produce electric
During the test it was stable for 1-2 hours.
This is a cooler. It's purpose is low temperature, not energy production.
Aonde compro está pastila
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 😳😳
Aditya Mhatre I think one is about 70 wats 5amp,12 volt
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How about I stack 12708 module on a 12712 module on a 12715 module? Any way to get a little colder? Lol
James Andonian yes
It can work, watch part 2!
What the fuck!! Seriously???
Two peltiers in this order:
Hot face to disipator and cold face Peltier 1 in hot face of Peltier 2,results in cold face Peltier 2 out -40°!!!!???