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Upgrading My Peltier Mini Fridge (part 3/3)
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- Опубликовано: 1 окт 2021
- Hello, hello! Long time, no see…
My Peltier mini fridge was not very efficient, so I made some modifications to improve it. It took a long time to make this video, especially the testing part. But the mini fridge it’s much more efficient now.
I'm pretty sure you will learn something from my mistakes :)
A big THANK YOU to all my patrons, especially to: Richard Fjellvang, Max Rice, Jacek, techge, Anthony Ortenzi, John.
If you are a nice lad and want to donate to me on Paypal, here you go: melcumlk@gmail.com
If you try to build devices similar to mine and need help, I will answer your questions on Patreon.
My Patreon campaign: / sorindiy
My Facebook page: / sorindiy
My Instagram: / sorin.diy
My friend Cristian just started his RUclips channel - Cristian DIY. If you enjoy building stuff or you just like to watch DIY videos, take a look at his channel: • DIY:Plywood Speaker -U...
Schematic: imgur.com/RlTD72K
Components list:
12703 peltier module: s.click.aliexp...
Digital Thermostat: s.click.aliexp...
15A fuse holder: s.click.aliexp...
5A fuse holder: s.click.aliexp...
14cm fan, 12V, dual ball bearing: s.click.aliexp...
14cm fan grill: s.click.aliexp...
M3 standoffs kit 300pcs: s.click.aliexp...
MT60 connectors: s.click.aliexp...
Double switch 21x15mm: s.click.aliexp...
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I love how he doesn't want to say beer but swears in the same video 😂
Yes an amusing detail. A little disappointed actually, but I suppose it's a cultural thing.
Most languages don't have the idea of cuss words so it really does not occur to everyone.
Excellent upgrade, very well done. And I’m pleased to see your furry assistant was also working hard 😀👍
1. Great ideas
2. Good examples of learning from mistakes & troubleshooting
3. Some of us like to use this in classroom or with our children, please omit profanity
Thx! 🙂
Brilliant video, thank you. I have already built a peltier fridge but was never able to get it to work properly. Your video answered many questions which I did not even think about. One small tip from my experience after observing how refrigerators cool stuff, they use fans to circulate the cold air inside. If you add two 40-60mm fans inside the lid on spacers then you can achieve even better and faster cooling. Try it and let me know your thoughts 😊
Good job Sorin! Your upgrade is really impressive. Thanks for this video.
I plan to build something similar, but to increase efficiency, I will primarily use vacuum insulated panels as the insulation, just use one peltier (to limit thermal exchange), and will be using specialized/unique heat pipe type heat exchanger-no electricity or fans.
Sometimes it will be hooked up to a car, other times to a Solar panel. I plan to make it so that I can also passively cool with it via IR sky window.
Hello Brother. I wanted to thank you for all your hard work. You spend time, money and other things in life so that people can learn new things or be inspired. All the beautiful work you have done is appreciated. Especially in the third part of the refrigerator construction, you honestly showed all the construction issues and its problems, and it was very valuable for me. Many words can be expressed in gratitude to you. But you shouldn't spend your precious time reading comments because you have a lot of work to do. I wish I could reach you in person and hug you with all my heart and thank you..... I hope you will always be healthy and happy and successful. I hope to meet you soon. Yours: AkhavanRad
Arata super! Esti foarte creativ, Sorin! Tine-o tot asa.
Super🎉🎉. I'm from sri lanka🇱🇰🇱🇰
how did i miss this till now....
another great video Sorin, keep up the good work !
Hey, good job! I recently modified a wine cooler, with a water cooling and more powerful peltier modules. It works like a charm now 😃
I liked the upgrade idea of using 12 and 5 volts, and I think if you want to use such a system in a car, adding a cheap 5 volts buck convertor will do.
Yes. Or connect two peltier in series will drop the voltage to half.
New intro is very nice.
Love this build. Been thinking about taking an old bottle chill pad and putting it in a old cooler. This project gave me alot of good ideas.
I hope you build a freezer next and it'll be cool if you can add watercooling to the peltier!
Amazing. I wish you get millions likes and subscribers ❤❤❤
Please dont stop making videos.
Liked and subscribed 👍
I love your finishing and packaging
Your assistant sure helped out! Look how much better the fridge works now...
Would it not been easier to turn the fridge around to mount that last standoff/foot than turning just the foot? :-D
I'm glad you averted the issue of having to remake the fridge all over again with that awesome move... :-P
Great upgrades! Thanks for the video!
LLAP
He could have avoided both solutions by using it on another location. :o)
I enjoyed the video, and liked your sense of humor new subscriber!
Enjoyed the mods you came up with.
Maybe rig a 5V buck converter so you can still use it in a car? Also, you can probably reduce fan noise by mounting it with rubber grommets.
Excellent project 👍
Nice I love your videos so much.❤
Bro please make a video on ZB2L3 battery capacity tester.
Great to see you again
love your videos!
Hello. It would be interesting to see if sucking the hot air from the heatsink instead of blowing on it would change something.
Thank you.
It would that's how its supposed to be
Esti forte bravo, un lucru bun si qualitativ
Salut!
need something like this for me camper van, to keep me food and a few cans cold, the one I brought is poo, its only 48ws, it cool, but not cold, so was thinking off just cutting hole in side, and putting an extra Peltier in hole, good vid by the way, love the way you done it,
Well without your assistant you can't make this project 😂
I love your idea sooo much :D and what a cute cat
Sorin,
Use LM317 to make a variable fan speed controller. Can use 5K poteniometer and 1K ntc thermocouple (and a 1K ohm and 100ohm resistor) 😁
They will waste power in the form of heat
@@MrIC01 who cares, the fridge is a power hog anyways. The LM317 heat generated is minimal for the power that the fan actually draws. I use these in a bunch of applications, the hotter it gets the more efficient the "fan controller" becomes.
@@jamess1787 😅😅 i am guy who wants to break the law of physics and have a 100% efficiency .😅😂😂😂
@@MrIC01 I was thinking of adding a fan inside. It would walk the cold air if you have several doses of "juice".
In case of connecting the two fans (necessarily identical) in series, you would practically reduce the voltage on them and therefore their speed.
Sorin, iti meriti oricum o pauza pentru dozele de la final !!!!
@@markf1441 yes you can.. Its your choice 😁
It is nice upgrade. However, would like know can't aluminium substitute with copper one way or other?
Every new video is a very good video!
The modern version of Shrodinger's cat. Both cool and warm at the same time
Which means there'd be a hole for the fan to get air to blow on the fence but the air would have to go out the side holes and couldn't come back around
Yes, that will probably help in some cases.
nice
Oh hi Sorin I'm a big fan
12706 10v, 12cm FAN 10v = Silent + 7'c inside 27liters. ROOM + 26'c (2 X DC-DC XL4015)
If you used a 12715 rather than a 12703 it would cool down way faster, but you would have more issues with overheating wires.
Laminar flow over your heat sink 😉. Dare you to try closing the back in and putting in / out fans on opposite sides.
My dude dropped me when he said, WHAT DEE FUK APPEN ERE! 😅😂
could even use some heatpipes on the hot side of the peltier module
Foarte interesant upgradul, ți-a ieşit foarte bine felicitãri
It would be nice to see some transparent mesh over the fans and vent holes
Maybe you need to add step-down board from 12V to 5V in order to use it in the car again :)
Anyway - I like your spirit and outcome of your ideas - great job!
"What the fuck happened here?" LOL
Yea. Sounds like my projects
Nice video again. Best wishes!
You could add extra fans in some of the venting holes smaller fans the size of the holes you cut
Bravo,supere tare!
What if you put a cardboard cover on the back so that the hot air can't get back inside the fan and blow on the fence
Nice biggest fan of yours
are you a 140mm fan ?
@@Pyanthar nice joke
@@Pyanthar hahaha
@@MuhammadShafiq-fh8dp @ Matt Bigger is better...oh little perverts :(
Cover the back and add some thin metal mesh to avoid insects from going in, or it will become a bug graveyard. Also try water cooling someday, it will make cooling much much better.
Why do you have aluminum sheets inside the box. And is a water pump heat sink better than a fan based system?
Aluminum is a good and cheap metal to transfer the cold temperature from the Peltier modules to the air and products inside the cooler box. water cooling is better than fan cooling, but it's more expensive.
@@Sorin_DIY Thanks for the reply Sorin. I have seen some people use a radiator with a mini 6 volt fan, instead of aluminum inside the box. Using that many aluminum sheets is difficult.
16:50 this happend to me before 😂
Great project man.👍👍
If the MDF is not waterproof, it will lose structural integrity and fall apart when if gets wet from condensation or spillage. Probable ABS would be a good replacement material.
The MDF is covered with vinyl and foam insulation, it's protected.
You placed on cold plate so the temp lowers much faster, now you can mount a fan inside so to make more circulation and finish the job faster , because the more time you operate this the more power you burn
Your expired thermal glue reminds me of the video by Tech Ingredients about DIY thermal adhesive. If you haven't seen it, check it out!
That recipe presented is not good.
Do not put copper in contact with aluminum, especially in humid spaces.
Excellent work.. good job brother
I wonder do you have a data sheet about how to operate the 5 and 12v? I bought the same thermostat and I’m about to build the same system but in different shape and cooling system..
I appreciate it if you guide me..
Best
Hello. I don't have a data sheet, the 5V input needs to be connected to the unused relay pin on the board. you can check the schematic in the video description.
@@Sorin_DIY Ive done it. thanks bro
Is it possible to do it with other kinds of thermostat? It has only -9 and I want less..
Good content very useful and detailedful
Is stacking the peltier module can make it more cooler?
I haven't tried it yet, but I don't think so. I will test this in a future video.
Good question!!
If you have more Peltier modules running at lower voltage it will be more efficient
(to double the cooling, you need quadruple the power)
Next upgrade is water coolant.. use water block n add 2 pilter more.. that will make fast cool..
⚡+🐈=love it
Nice Job Sorin,,,
what happens if you submerge the heat sinks in mineral oil while still using the fan? Wait before you say it is impossible since the heatsinks are at the back you can use copper heat pipes to transfer the heat to the heatsinks which will be inside a oil tight enclosure. the oil should dissipate heat more efficiently without increasing power consumption.
it could cool down the heatsink more efficiently. also water cooling will work fine. but the mini fridge will be bigger and the cost will increase.
un racitor de aer ar fi frumos daca ai putea sa faci in viitor
Mmmm carls-soda! And carls-water!
Hi this is really great series, I want try to make it. But wondering if using only 1 peltier is enough for small fridge like this? I am wondering whether to make a low watt (like 36watt or so) fridge possible?
Hi. You can use one peltier module, it will need a good heatsink and good insulation, but it will not get very cold.
@@Sorin_DIY thank you for the insights ☺️
How lo g its the live ok these peltier working permanent in 5. Volts?
nice nice nice sorin
Hii bro I'm your biggest fan
You should put a soft starter
I hope I will be able to do some mods to my car fridge and get it down to that temp that would be wonderful ICE COLD Drinks
Bro I'm using 3 tec-12706 with a 12 volt 20 amps smps and using 2.5mm wires to carry the dc voltage to peltier but the wires are getting very hot , don't know what to do
Hi. 12706 modules draw a lot of current. I suggest you replace them with 12703 modules.
Please post more often
I wanna do one refrigerator very similar but with one or two batterys , to be "Mobile" just Let me one mounth, saludos desde México!!!
I love you cat 😘😘🥰🥰
Hello Sorin!
I have a question:
Is your mini fridge after this upgrade can be feeded by 12V car battery and how muh power it will consume?
If you make simple calculation for me I will be very happy
Thank you!
hi. the car electrical system has 13.8 - 14V. the mini fridge will work, it will use around 7.5A. but the fan it's designed for 12V, it will not last long. you need to decrease de fan voltage.
I think you only need is inverter because the pc power supply is 220V or 110V AC
@@KUyangTVTMBETAversion he use PC power as 12V to power the fridge.
My question was how to or is it possible to be connected in car cigarette lighter.
I love it but can u share the new wiring diagram
imgur.com/RlTD72K
How do I make the unit switch automatically between 12v and 5v based on the set thermostat temperature
You need to connect the 5V and 12V wires to the relay, as shown in the diagram.
@@Sorin_DIY Thank you for that. I did not realize you were cool enough to leave us a diagram 😄 Sweet!
I would want to see this setup with a thermal imager. See if there is massive cold leak and insulate it better. It could be useful for picnics or illegal organ trafficking.
I would like that too. (the thermal image, not the traffic thing)
@@Sorin_DIY I’m thinking of getting one from China. Not the organ. UNI-T imager, there is a cheapo version.
Hi
Just want to ask since you make mini fridge. Is this possible to make the peltier for display glass cabinet a decent small display cabinet, like display chiller for donuts.
hi. it's doable, but you will need more peltier modules.
@@Sorin_DIY thats amazing the size of my glass cabinet is L24in x W12in x H24in and planning to put at least 3 peltier and the top before the glass is stainless board 1mm thickness then there is a hole in front and back so the cold air will come out to the inside glass. Is that possible. Then put a meter reading so it will stop on desire temp
this will help more to all small entrepreneurs since chiller is very expensive
I like your cat 🐈😺
Hi Sorin, great videos. I like how you show the mistakes you make, I myself didn’t thought about it, thus new learnings. Horaay
Can you also consider building a DC air conditioning unit project?
P.S I also have my furry assistant who go inside every box/container I have no matter how small it is.
hi. Yes I plan to build an AC unit with peltier modules, but winter is coming... :) I will build it in the spring. in the meantime I will play some more with peltier modules, so I won't make any mistakes in future projects.
@@Sorin_DIY Exciting. I will be waiting for it.
I would also like to see this done. I will be building a very similar fridge for my camper van conversion.
Only thing you could do now is put a fan / radiator on the cold wall.
Awesome!
I wonder, would it make sense/work/be worth it to do all 5 sides in metal?
(Would it be any worse?)
it will be better, but harder to make and more expensive.
Very cool (pun intended)! Try getting a noctua 140mm fan of possible.. Might help with the noise.
*if
very good after your modification your replace your fat car with low energy little kitten it is handy too.
i love your videos!
Ok, but what if I have, say.... 12 Peltier modules. Will this help me for 12v purposes?
(I ask bc I have 12 in my closet and need a use for them)
you can use them but preferably not in a single project, because they need a lot of current and very efficient cooling. you can make a mini freezer, mini fridge, maybe a small air cooling unit.
@@Sorin_DIY hmmmm alright. Thank you for the response!
Hello Sorin, Well done for the video. A quick question if you don't mind. The fan attached to the hot side is to blow air to the heat sink or to extract the heat from the heat sink to the external room?
hi. the fan is blowing air into the radiator.
@@Sorin_DIY thank you for your response
Please share the peliter moduler purchase link
12703 peltier module: s.click.aliexpress.com/e/_9xMJvx
Great improvement!
Before you told us your simple and practical approach of using the 5V as the idle voltage on the peltiers, I was thinking that you would use a PWM board to vary the power to the Peltier modules...a lot harder though as you would also need a PID controller....oh, well, just a thought.
Perhaps you can just use the green wire on an ATX motherboard to turn the power on and off?
Pwm is bad for these modules. Please read datasheet
@@MrIC01 No, I'll leave that data sheet reading to you. How do you think the PC power supply generates its 12V and 5V? A high enough PWM frequency and the Peltiers will just see a DC voltage.
@@BenMitro please go through the basics of low pass filter. Moreover PC power supply uses them in a bulk, did you see those bulky inductors? And yes i do read datasheets😊
@@MrIC01 I'm afraid you are preaching to the converted. 45 years in the game, several degrees in Physics and Electronics. I was just trying to open the possibilities for you.
@@BenMitro well, sorry then, but reality begs to differ with your opinion. PWM generated by a PID controller is about as bad as a driving method for s TEC can be. You NEED a low-pass filter to drive them with smooth DC current. A simple buck/boost VRM can be used for this and hacking it to be controlled by an Arduino is not terribly hard (hint: look at the Voltage control potentiometer).
Dar pisica unde se monteaza?
Can u please give dimensions for this project
Like what is its capacity in litres with considering 6mm MDF board and 12 mm insulation
hi. the interior dimensions are: 22cm * 15cm * 18cm. the interior volume is almost 6l.
Have you tried putting fan inside?
if the internal radiator is large enough, there is no need for a fan.
The upgrade was nice and great, one thing to add as i also worked with the modules and used a fan in parallel with them, which was a mistake as the modules are power hungry so they dont allow fan to get enough amps to run and i have decided to make a seperate power supply for it and now the fan works really good. May be it could help you also.😁😀
if you power them with a transformer, the voltage will drop. but a PC power supply works with a stable voltage. if the voltage drops, the power supply shuts down.
@@Sorin_DIY amm you got wrong brother.. Leave it like this😊😊
@@MrIC01 current consumption of fan negligible
@@sayyidsahal4533 mine was about 600mA.
@@MrIC01 still negligible with 20A or 40A psu
It’s ironic that he labeled the beer (I mean soda) cans as water and cola to avoid getting banned from RUclips
what if you plant the strawberry inside the fridge ?
Cat would eat it