DIY Air Conditioner with Peltier modules
ฝัง
- เผยแพร่เมื่อ 10 ส.ค. 2023
- Hello guys!
Can we build an Air conditioner unit with Peltier modules? Yes, but is it any good? Today we will find out.
A big THANK YOU to all my patrons, especially to: Max Rice and Anthony Ortenzi.
If you are a nice lad and want to donate to me on Paypal, here you go: melcumlk@gmail.com
My Patreon campaign: / sorindiy
My Facebook page: / sorindiy
My Instagram: / sorin.diy
12703 peltier module: s.click.aliexpress.com/e/_9xMJvx
If you enjoy my videos, hit the Subscribe button! - วิทยาศาสตร์และเทคโนโลยี
![ตั๋วเมีย( ຕົວະເມຍ) - SOMBATH.97 Ft. YOUD SALAVAN [ Official music video ]](http://i.ytimg.com/vi/GV6qHagpp50/mqdefault.jpg)
The cutting precision of your construction is impressive. I wish my projects looked as nice.
It is cnc cut
I cant even get my 3d prints this nice >_>
Thank you for being honest about your results.
Your cat is also a welcome addition.
I love your helper. I had one for 14 years that was involved in every project I did, he just had to be with me when I was working on my hobbies. Alas, time took him away and I miss the heck out of him. I like the way you explained the "real world" effects of your experiment. Too many people would do the same experiment and claim it cooled the whole room by 20 degrees. Great job.
The most honest video about peltier conditioners I've ever seen.
Excellent job!
Even after doing the work to select the best peltier TEC, you still prove that peltier devices are not very good for cooling unless you have free electricity.
I watched the whole video, didn't think I would but impressive, fair and lots of detail.
"cardboard is a *sheet* insulator"
Well done Sorin! 🥁
Finally a honest Peltier AC video! I feel if you got more airflow on the outdoor heatsinks there may be better results
I like how you keep the thermometer at the place where the cold air comes out. Other youtubers put it inside the heatsink and trick us.
As always i absolutely enjoy watching ur videos brother 🎉😊 keep up the good work
planned for this project but dropped it after seeing your video. Thanks
10:45
Sorin: I turn the PC and lights off because I don't want a heat source in this room
Also Sorin: switches on a 200 W power supply to "cool his room" 🤪😂
If his power supply is extremely efficient, the heat generated would be nearly negligible, it would be better than a 12v wall socket adapter or other common power supplies.
Yeah takes heaps of power.. better put the power source outside the room you want to cool!
200 watt power supplies won't normally significantly affect room temperature.
Neither a 4W LED light bulb
I'm just discovering your channel ( thank you, youtube algorythm ! ) and I really enjoyed this video, you just got a new subscriber, congratulations !
Great project to cool an outdoor cabinet with electronics.
I always enjoy your videos and learn alot. Please make more videos for us
I loved this video! Thank you so much!!
Very helpful explanation .
Sir , thank you so much for sharing your technical knowledge .
I am from Sri Lanka .
Very funny & honest report of your project!
planned for this project but dropped it after seeing your video 👍
Excellent experiment, i appreciate your interest and patience, you are really great 👍❤
Thank you for an honest and really enjoyable video
From one electronics dork to another - Thanks! I have a design to make one of these for my sailboat - very informative - you have a new subscriber
If you build get good peltiers with a propper datasheet. Those modules move heat depending on voltage or current, but as any component it produces heat with the square of the current.
Some even work in both direction so you could build a closed loop AC control like in your car.
this
th-cam.com/video/xF113aUlZgo/w-d-xo.htmlsi=JkJaNttzaZXlGb-O
is a better idea for a yacht a/c, I've built one for mine, it's really effective.
Tot corect si drept.
Multumesc pentru dimostratia.
Salut
V.
This would definitely save hours, efforts and power for anyone thinking of making ab air conditioner out of peltier modules. Its enticing, but impractical.
Thanks for sharing!
I'm not so sure that this can be deemed impractical yet. There are many ways to improve this. And he didn't do it at the same power scale as a typical window AC unit. I'd like to see this done with 900w-1,000w worth of peltier modules, intake from the inside instead of from the outside, the power supply outside, and possibly more insulation.
@@bubbleboy821 Yes, it's enticing, but, the wow factor ends there. The returns are unremarkable.
@@bubbleboy821Se vai usar tanta potência assim 900w a 1000w é praticamente o consumo de um ar condicionado, até mais na verdade, um ar condicionado split é por volta de 750 a 900w
I had the Cardboard all years to output my non-stationary AC. As outside protection i used the Gold/Silver emergencycover to reflect the IR-radiation. With Ductape it was realy strong :)
Interesting video and I think the idea behind your prototype is good. What I can think of so quickly after seeing your video is that the exhaust fan has too little capacity, also the fan on the cooling side.
I would also recommend making a double separation between the hot and cold side in this DIY box. Try that first before purchasing more peltier. Let us know if the difference has increased.
Succes, greetings from a 28 degrees C. Rotterdam.
I enjoyed your video and I subscribed. I believe there are other diy projects or builds that can cool a room for less energy/watts. I like how you make your videos. Very interesting.
ah, i found this channel again when i needed it the most
The cool side should have one air input, one air output. Creating the airflow in one direction, also have the car type vent on the exit side. Use a better insulation in between the cool side and the hot side. One peltier module will drop the temp with about 17degrees in a 25 liter coolerbox. Wich is an enclosed space. How many liters does a room have? :) nice thinking though.
Great video. They work, but they require many design considerations since they are so close to each other.
They technically work, but not well. As he showed, an amount of modules to actually cool well would be closer to 20, and that would use over 2000W. Further, Peltier (Seebeck) modules put the cold and hot so damnably close to each other that the insulation of these disparate areas is very difficult -- perhaps that's what you meant? Better design will not make a solid-state aircon work any better or more efficient. That's why there aren't any commercial units of that type.
@@babylonfive Better design would make a solid state aircon work better though. It's the whole point of engineering to play with he variables to make things more efficient.
Looks effective, I wonder if running the chambers with a low pressure fan configuration would help achieve better thermal efficiency?
One easy way to make the carboard a better insulator would be to glue aluminum foil onto the outside surface so it reflects more sunlight instead of soaking up the sun. If you also add a layer of styrofoam between the cardboard and the aluminum it should be pretty effective.
Great project! I do think, you can improve temps on cold side by installing more and better fans on the hot side, more airflow is better. So is with the cold side too.
That video was informative and entertaining. Thanks.
Thank you for speaking true!
Really interesting and informative videos and thanks for making this video ``````❤❤❤❤❤
Amazing project, I'm impressed! You may also want to put the heat radiator end on the outside of the cardboard? The line of the peltier modules should be the divider at the window cardboard itself so that no heat from the heating end escape into the room.
Would be good if you do another video with this configuration? Thanks!
Very helpful explanation. thank you.
This is a great video to teach people about how a peltier can work.
I don't know if it's been mentioned but if you moved the fan you had cooling the hot side to pull cooler air from inside it will make the cold side colder, the info I found is if you want the cold side to be cooler put a bigger heat sink on the hot side as the more heat you can pull away the cooler the cold side gets. This could be a mk2 version where you put a water cooler on the hot side, if you put a water block on the cold side I would make sure the coolent has antifreeze.
your all projects are great, but, mostly i like it when your all time available supervisor comes in picture with your company :)
Fun project.
If use air for cooling the hot side maybe you extend the intake using flexi hose and position in lower and shaded area. Then extend also the exhaust using tube away from the intake. Thanks for making this project I learned a lot.
Impressive, maybe an improvement if interested window panel painted white on both sides with spacer 3rd layer to create a place for reflectix between. Would help in absorbed thermal from outside, oil base white paint is water proof
Clever stuff!!
Fun video, and honest about the results. I'm guessing there is no way to make an airconditioner better than a commercial one or someone would already have developed it as a commercial product. But who knows?
"better" is subjective. The high pressure pumps and gases are certainly the easiest. But another channel has done experiments to find effective cooling using a chemical liquid based system. It's quite large but very efficient.
It depends. Industry uses peltiers in combination with compressors. The compressor get's you roughly down, the peltier keeps your room inside 1 degree.
But you need more modules and get the current per module down as P=R*I^2 creates a lot of heat inside the module.
You can always turn it into a clean drinking water machine !
Ca sa aveti rezultate bune la climatizare trebuie neaparat sa izolati termic pe interior 1 peretele exterior 2 geamul .Dupa care faceti iar test+grafic+vedeti cu termoviziunea situatia si mai izolati soprafete ce radiaza caldura.Elementele Peltier au randament f mic=energofage.
Multumim pentru calitatea prezentarii❤
I also do some DIY with Peltier elements. For sure I will watch your other videos about this.
I would like to build a fermentation box for sourdough. This is to be kept at a constant 28°C. The Peltier element must therefore be used as a heater for most of the year. I hope to be able to heat a small box with two elements.
To reduce the current, connected the elements in series and double the voltage. First experiments suggest that I can run the elements at about half the rated voltage, which should boost the efficiency.
Brilliant. Thank you
Very nice Omule!
thanks for straigt up honesty, a relief from all the BS youtube pushes
Dude! It's all about temperature differentials. You must "pre-cool" the hot side first in order to let the peltier device to work more efficiently. Things you can do, for example, keep the hot side away from the sun, use water cooling, etc. Also, calculate the BTU. Your room might have bad insulation so your west facing wall can be very hot to begin with. You didn't make a good air conditioner doesn't mean the theory is bunk.
If you run the vents through the floor it will work a lot better, I have seen a unit like yours used with pipe running three foot under the ground and it worked fantastically
Best build i did see for a long Time... Also try to get an old used aio pc cooler for cheap. Make those tubes longer and its working a lot better. Also try to use an better 15A (12715) ore 20A (12720) peltier module, rather than more cheap ones. Its more efficient that way. I use an 20A one, the biggest that fits on the aio pump unit, and an 200mm x 300mm Aluminium heatsink on the cold Side freezes without an fan. With one it gets my room about 4°C colder in one hour when im in my room. Also my powesupply is Inside. But i have an small room that is also very good insulated. Maybe that helps also.
I think also your heatsinks are way to small on the hot Side. Peltierelelments can only cool effective about 10-15°C below the Temperatur of the hot side.
a fun & informative project as always, Sorin.
I'm curious if using a radiator would help with the efficiency of your build... so the peltier modules heat liquid inside a tank/reservoir instead of air, then the liquid would be pumped out to a radiator which will transfer the cold to the air & the warmer liquid returns to the top of the reservoir to close the loop.
> Also, instead of venting the hot air horizontally, it would be better if the pipes were right over the heat sinks pointed upward with the fan repositioned to the bottom so natural air convection can pull more heat off the hot side.
> Of course, the power used by the additional fan that pulls air through the radiator may offset the cooling gains with even more power consumption... but I'd be curious to see if this is a viable alternative.
cheers & looking forward to your next adventure with your assistant Chichi!
Hi. With water cooling it will probably be a bit more efficient. But it will become more expensive. In the end it still needs more than 4 Peltier modules. So the water cooling needs to dissipate 200W of heat or more.
@@Sorin_DIY right... good point.
:D I wish I had enough of a handle on fluid dynamics & heat transfer to make the calculations but in the end it would end up costing a lot more than traditional cooling systems or heat pumps.
> btw, perhaps an idea for a future project: a DiY heat pump cooler using hobbyist parts & household chemicals (so no industrial refrigerants)...
cheers & thanks for the insightful response!
PS: say "meow!" to Chichi for me :D
You should make a swamp/water cooler tutorial. These things actually cool air and they don't consume as much energy.
Swamp coolers are good for certain areas, and don't work in others. When humidity is low, the evaporative cooling works well. However, if you live in a humid region, the evaporation of the water is low, and you don't get much cooling.
With this smallish cooler... It's better to cool a smaller area like under a blanket rather than the whole room.
The only youtuber that i blindly push like before watching video and never had disappointed me, Great job master Sorin.
finally i can make my own ac for my sciece project
oh wait i had a fight with my firend about making a fridge not an ac because it is less efficient seeing your test videos i noticed that 12703 peltier module gives highest coolness even makes ice if i had used these peltier module in my fridge i could even make a freezer or make it water cooled i gotta send this video to my friend now
They need to invent new things as its silly how much power they take. Ur video was the first and it was a great experiment xx
One thing that will help is have a more powerful fan for the outdoor and variable speedfan for the indoor with a much powerful power supply that is capable of giving enough power to it
Liked the video, love the cat. Also, I bet I have more of those CPU coolers than you do!! LOL I scrap old computers for parts like those, the fans, CD/DVD drives, and all sorts of other stuff. I like building things just like you do.
Great video. Water to air is definitely better on power. Especially with usb powered fan and water pump.
What if you made a big water-cooled peltor air conditioner ? Putting the heat part outdoors.
I've read of high efficiency peltier modules but I don't think their commercially available and I bet still less efficient than a compressor. Commercial peltier AC units are/were sold for industrial applications were they can be installed in any orientation (upside down on a ceiling).
Instead of using heat sinks for the hot side of peltier module, you can use liquid cooling techniques!, It will be more effective than your current made prototype.
Thank me if I am right 👍🏻
I will use those peliter to make a cooler for a laptop. A stand that makes cold enough air to be sucked in be the laptop fan this way increasing the laptop cooling. Especially gaming laptops that reach 90 degrees or more.
I loved your cat's action supplementing your project as a partner.❤
Nice! I am wondering if there is some mini compressor w evaporator etc on Alliexpres for making something more efficient
I think using peltier modules as dehumidifiers might be more efficient...esp in tropical climate...or directly as a wrist cooler
The hot side ventilation is super restrictive. Remove all the case around those hot side heatsink's an use 3 fans. Also reduce the voltage to about 6 maybe 7V to the peltier for increased efficiency total power consumption will be around 30W including all the fans. Then all you need to do is multiply this by around 10x and you will have a decent enough room air conditioning. So 40 peltier modules each around 6 to 7W with a COP of around 1 thus about 280W of cooling power likely just good enough for that one room.
The hot side of the box should be well insulated, ideally it should be entirely outside. The best heat sinks would be from early BTX style desktop PCs. They often had a kilogram or more of metal in them.
Great Video!
i deffinetley watched those videos, i decided to make my own cooler with peltier but more of a personal cooler instead of a room cooler
Try water cooling the hot side.. also .. try using the fan at the end instead of in the middle. (push or pull style)
a 90w peltier has a btu of just 100, a 200 ltr fridge of 150w gives a cooling of 450w & is 1800 btu , the efficiency of refrigerant based heat pumps is more than 100, probably this is the reason no one is ready to make a ac based on peltiers.
Check the
ThermoTEC™ 170 Series - 5500 BTU Solid State Thermoelectric Air Conditioner
That is so cool 😎
Great video. With no (bass) compressor noise pumping away, you would think a company would make this for people who want a silent AC.
thanx for testing it out.. I see fake videos and it looks nice, but in your video, i can see the actual results.. Thanx
A slight variation on you air-con, could you use the Peltiers mods to recover water from humid air?
I haven't tried it, but probably yes.
Nice job, Sorin! I would give a try to those 12 Volts compressors fridges, modifying them for air cooling. What do you think? It would worth the try?
Definitely be interested in the results ... fridges with failed door seals are easy to come across these days. 😀👍
No, the 12v compressor is very weak. It will get damaged quickly due to continuous operation.
Hi. A small fridge compressor will be very weak. because it's designed to cool down a small enclosure (mini fridge) in a few hours. It will probably work a little better than Peltier modules.
A split type air conditioner is designed to cool down an entire apartment in 30 minutes, so it has a large compressor, large radiator and a large evaporator.
As always came to see your Kitty Sorin :)
wow this is cool I was always curious how it will turn out if i make something like this.. the question is how about the humidity absorb from the room? I would love to see an upgraded version of this. Huge Thumbs up
I wonder if attaching a Stirling engine on the hot side would help recover some of the electricity and, maybe, improve efficiency
good explanation. thx
amazing craation bro.
Im just happy the quality controlled passed. was a bit nerve wrecking for a few seconds! 👍
Peltiers have a datasheet which tells you how you get a low temperature vs how to move heat most effectively.
At 12V your cold side most likely suffers from the heat generated in the module. Somewhere around 5-7V should be more efficient. Then you can scale up the numbers of elements, probably 6-10x.
And that's why they are never used for air conditioning. A compressor or an condensor move much more heat in a much cheaper package.
Peltiers are cool if you need precise temperature control, extremely cold temperatures or you can afford the huge ones with proper Isolation between hot and cold terminal.
You could also test it by installing it into a smaller air volume like a washing machine cardboard box,
Why? They use a shitload of electricity so aren't worth the time or effort unless he gets a lot youtube revenue from it or something.
I'm curious how the humidity is affected too. If the cold side gets cold enough to condense the moisture then perhaps it will have an additional cooling effect of dehumidifying the room too.
In a few hours it made just a little condensation. for longer use it will need something to drain the condensation. dehumidification probably helps, but very little.
13:01 I don't like going to work and if I can build anything to reduce the amount of time that I piss away on someone else's errands... the happier I am.
Anything I learn is specifically for that purpose. This, for example, shows me exactly how NOT to make air conditioning. Useful.
its been a long time sir sorin..can you do a video about 3d printing.
Honest video about peltier
I remember being fascinated with these after getting my first mini fridge. Really cool physics but they drew a ton of power and were easily heat saturated. At best they had a temperature gradient between the sides of 40 degrees. Hopefully the technology has progressed but compressor systems are simply more efficient
The fact that Peltier modules are constructed so close together makes it almost impossible to get their individual effects separated from each other. And therein lies the hard problem. If you can make some type separator to keep one side from influencing the other, than you may have a successful build. JMHO But nice project all the same...
Heating or cooling anything aren't cheap, I respect this guy's honesty (at 12:59 mark). One can play around this all you want, but if you need real cooling, get a proper air conditioner.
Couple of thoughts, would it not work better to have the intake on the hot side from inside the room? As you say, it's less efficient with it being hotter outside. As long as you're not in a sealed room, it should be OK, or you can make an intake (to compensate for air blown out of the room) in a shady spot which should cooler.
Also, I think the thermometer was showing hot when on top of the unit not because of the cardboard, but because it was sitting above the hot side of the unit, the place you moved it to is ideal, as its by the intake
Hi. yes the back side of the unit is warm and it has affected the room temperature measurement. but it still needs a better insulating panel, the cardboard was also warm.
Cooling the heatsink with room air is not a good idea. firstly because you use energy to cool the room air and then waste that cold air and vent it outside the room. and secondly because, as you said, the room is not sealed, so any air getting out of the room will be replaced with other air from outside, through the house vents. so cold air is getting out and it's replaced with warm air from outside.
In addition to cooling the hot side with water, how about connecting the Peltier devices in series rather than parallel? You'll have to supply more voltage but the current draw and associated heat will be reduced.
If connected in series the Peltier modules will draw the same amount of current, only the voltage will be divided between the modules. the total power consumption and heat dissipation will be the same.
am going to try watercooling with raw sea water for my boat with a car radiator when summer comes
Think you need to make the airflow on the cold side better, have it run thru more cold copper instead of ust 5cm of aluminium.
Having a pv panel charge a battery at day and then turn on the peltier using battery at night would not make any extra heat. Just need a lvd.