Thermoelectric Cooling is a Bad Idea

  • Published: 11 August 2019
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    People keep emailing us saying “Hey Linus, you should look at Peltier Coolers!” – and I’ve finally given in, so here is a video about why it’s a bad idea.

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  • Science and Technology Science and Technology

Comments • 3 636

    FORDGTFANATIC  2 hours back

    I was thinking about a thermoelectric cooled water reservoir to use for spraying chilled water on the intercooler on my car. It would only mist when a certain boost level was achieved.

    • thefluff
      thefluff  3 days back

      Why did he grab a physical calculator when he had the numbers in a spreadsheet already????

      • jul059
        jul059  4 days back

        Heating water with a Peltier may be a bad financial idea, but it certainly is not a bad thermodynamic idea. Go back to school!

          HAEAEAEAEAEX  4 days back

          best intro

          • Paul Gray
            Paul Gray  5 days back

            Why take a large power hungry peltier to the CPU, when you could use a lesser one to cool the water reservoir of a water cooled system. Also easier to test. Or, use them to generate power from waste heat and power moar RGB - bwahahahaha.

            • Miki Cerise
              Miki Cerise  1 weeks back

              It's MAGIC. It was invented by someone in Florida who wanted to bring cheap, free CPU cooling to the masses, and who was of course assassinated by Big Air and Big Water. Stop pandering to the man, Linus.

              • Clinton Cook
                Clinton Cook  1 weeks back

                I was researching peltier chips on CPUs and stumbled across an interesting comment (not sure if it was this video or another). Someone suggested using a peltier chip in conjunction with a water cooling system. Instead of applying the peltier to the CPU, you put it on the water reservoir to keep that cool. However, hearing about how peltiers use a lot of energy, I decided to look up ways to control the voltage to a peltier. Apparently, you can't regulate the voltage. But, you could turn it on and off with a PID controller. The PID would monitor the water in the reservoir to make sure it maintained a constant degree. If it went too high, the peltier would kick in and cool the water back down to the optimum temperature before getting turned off again.

                • Clinton Cook
                  Clinton Cook  1 weeks back

                  "Ya, Andy just left his water bottle here." Turns it around and a big, tape "A" is on the other side.

                  • Kasnfk Aosodndo
                    Kasnfk Aosodndo  1 weeks back

                    Fairly amateur soldering techniques from pretty tech savvy dudes haha

                    • Gaming History Source
                      Gaming History Source  1 weeks back

                      I wonder if you could use 2 of these peltier coolers in series & direct all the heat to one & all the cool to another ?

                      • Nathaniel Mikkola
                        Nathaniel Mikkola  2 weeks back

                        Would the results be different with a lower wattage cpu? Like would this cool a 65 watt cpu better than the traditional radiator would?

                        • Thibaud Persyn
                          Thibaud Persyn  2 weeks back

                          Old tech, remember the Titan Amanda TEC cooler for lga 775, it had it's own PCI port to power the hungry beast !

                          • NANOMITE RC
                            NANOMITE RC  3 weeks back

                            It's too expensive in your country .

                            • HaydenX
                              HaydenX  3 weeks back

                              You should build an excessively ridiculous liquid hydrogen cooling loop to see some truly insane OC numbers. Since liquid hydrogen has a specific heat that is like 3x that of water, on top of being quite chilly to begin with. It would fall under "Bad Cooling Ideas" not because of poor performance, but really low performance/watt. I'd really like to see all of those extreme results.

                            • dfalconerio
                              dfalconerio  3 weeks back

                              you can judge a bad solder by the amount of electrical tape haha

                              • John Johnsen
                                John Johnsen  3 weeks back

                                Nice Vincero watches!
                                Great for using in a blender or shredder.

                                Btw, the Germans used peltier elements on their u-boats to produce electricity from heat difference between the water and the u-boat itself.
                                That way it's thermal footprint was lower/smaller, making it harder to detect by enemies and it didn't need to go to surface for replacing batteries.

                                • Vilo Shmillo
                                  Vilo Shmillo  3 weeks back

                                  Can’t decide which one of you is a bigger moron.

                                  • AME
                                    AME  3 weeks back

                                    Everyone cringing every time they pronounce it "tech"

                                    • Justin Carroll
                                      Justin Carroll  3 weeks back

                                      Ok so now you need to make a block to cool another block to see if two loops combine can be magic, or would it equal two sets of radiators on the same loop?

                                      • Derpin Bird
                                        Derpin Bird  4 weeks back

                                        If power was no object you could end up with a super cool and quiet rig if you added enough of them

                                        • bleckers
                                          bleckers  4 weeks back

                                          Thermoelectric cooling will never be worth it. You have to not only get rid of the heat of the CPU, but you also have to get rid of the heat the Peltier is adding to the system before you see any measurable benefits. If you use a 500W Peltier, then you have to get rid of that 500W too.

                                          • Byke Ryder
                                            Byke Ryder  4 weeks back

                                            Should left the radiator hooked up while doing the peltier loop and seen what the results were.

                                            • Lain Macauley
                                              Lain Macauley  4 weeks back

                                              Tl;Dw buy an air cooler.

                                              • Dr sausage fingers
                                                Dr sausage fingers  4 weeks back

                                                have you tried to slow down the flow rate? maybe giving the chillers more time to cool the water may help? i understand it will also give the CPU more time to heat the water up but maybe it will make a difference over all..

                                                • Daniel .Power
                                                  Daniel .Power  4 weeks back

                                                  Is there any benefit of cooling a cpu and gpu below ambient say maybe 10 degrees celsius under overclocked load instead of 30 to 80 or whatever above ambient degrees celsius?

                                                  Maybe longer life or better efficiency? I also don’t see the tec’s as stand alone coolers, they are more inefficient than radiators above room temperature, yes, but because radiators cannot cool to or below room temperature, tec’s are therefore more efficient there.

                                                  Just not sure if there is a benefit. Also not sure if a better build with tec’s is to use the water cooling blocks on top of the tec’s and cpu to water cool the peltier, keep the size and noise down, as well as get the cpu below room temperature or to put the tec at the end of a radiator loop with some 6 heat pipe tower heat sinks where the tec chills room temp water from the radiator below ambient before it passes through the cpu and gpu and even to cram a peltier and water block inbetween the gpu and cpu to flash chill the water between the systems and to make use of the small size of the modules. Another system is to carry a double stack radiator with one water loop for cooling peltiers and another loop for bringing water to room temp with maybe an electric valve switch to either go below ambient or turn off the peltier and route water from the peltier cooling loop to the central loop when overclocking. Long story short, anyone investing in water cooling isn’t exactly a budget builder and will pay a few extra buckaroos for space saving, lower noise, and looking for whatever air cooling cannot deliver

                                                  Also, get yourself a krimping kit, like cheap dupont 2.54mm connectors if soldering is not your thing :p

                                                  • tchouzebra
                                                    tchouzebra  4 weeks back

                                                    If one tower is the hot side and the other one is the cold size then the fan must be put in place so it pulls from the cold side and pushes to the hot side

                                                    • Cody Gilliland
                                                      Cody Gilliland  4 weeks back

                                                      seen your video on concrete cooling just an idea concrete cooling block maybe????

                                                      • John van de Ven
                                                        John van de Ven  4 weeks back

                                                        I am absolutely certain that the thermoelectric cooler will run perfectly on AMD processors. After all, they consume a great deal less power and run much cooler than comparable Intel parts. If I had to live and work in Antarctica, I would use only Intel. They are very efficient room heaters, especially the i9 9900K.

                                                        • Taut Tech / Minus Managed Music

                                                          Next Bad Idea: Put a Bluetooth speaker in a CPU cooler!

                                                          • u666sa
                                                            u666sa  4 weeks back

                                                            What kind of thermal camera is he using??

                                                            • Jason Norman
                                                              Jason Norman  4 weeks back

                                                              Ultra Chilltec thermal electric cpu cooler came out in 2007, had a 5.25 bay to control the TEC, while using air cooling.
                                                              I am still using this on my older P4 dual core.. Old School. Runs at 32 F.

                                                              * Socket Types: Intel Socket 775, AMD Socket AM2 / 754 / 939 / 940

                                                              * Cooler Dimensions: 128 x 104 x 147
                                                              * Thermoelectric Chip: 40 x 40 / 12V DC
                                                              * Total Power Dissipation:
                                                              0% Load = 5 W
                                                              50% Load = 28 W
                                                              100% Load = 50 W
                                                              * Heatsink Material: 4 Heat Pipes, Aluminum Fins, Copper Base
                                                              * Heatsink Dimensions: 90 x 90 x 160 mm
                                                              * Fan Dimensions: 92 x 92 x 25 mm
                                                              * Fan Voltage Rating: 12V DC

                                                              * Fan Speed and Noise Levels:
                                                              Low 2000rpm / 20 dB(A)
                                                              Medium 2400 rpm / 24 dB(A)
                                                              High 2800 rpm / 28 dB(A)
                                                              * Thermal Resistance: 0.12-0.15(ºC/W)
                                                              * Weight: 985g (With Fan)
                                                              * Temperature Monitor Range: 0ºF~99ºF / 32ºF ~ 210.2ºF
                                                              * TEC Temperature Response Time to Control Unit: < 1 Second
                                                              * Controller Dimensions: 150 x 147 x 43 mm
                                                              * Controller Weight: 508 g


                                                              • Moritz Fl
                                                                Moritz Fl  4 weeks back

                                                                Linus appears to be wearing different clothes after every cut to show off the merch :)

                                                                • wisdomelf
                                                                  wisdomelf  4 weeks back

                                                                  we just need a miniature black hole to suck all the excess heat.

                                                                  • FpsFate
                                                                    FpsFate  4 weeks back

                                                                    Vincero? What is this lovelliveserve?

                                                                    • CupcakeLove
                                                                      CupcakeLove  4 weeks back

                                                                      2 questions. Does anyone know what type of laptop Alex is using, and does anyone know the specs of the rig they are testing the cooler on?

                                                                      • Joseph DESTAUBIN
                                                                        Joseph DESTAUBIN  4 weeks back

                                                                        Perhaps it's not mature technology? WTF, it was invented in 1838!

                                                                        • Eric Huang
                                                                          Eric Huang  4 weeks back

                                                                          Have a try to put the peltier after a radiator. That must work better. (Since that means we simply have extra cooling)

                                                                          • ʜ̲̅ᴀ̲̅ɴ̲̅ᴋ̲̅ ʙ̲̅ɪ̲̅ᴢ̲̅ᴢ̲̅ᴏ̲̅5̲̅

                                                                            Wouldn't you get the most out of this by cooling the radiator?? You know so the heat goes into the air not back into the system..

                                                                            • pikachu 922
                                                                              pikachu 922  4 weeks back

                                                                              try cascade phase change next.

                                                                              • Aleksandras Fedotovas
                                                                                Aleksandras Fedotovas  4 weeks back

                                                                                because its too expensive to run..if you can manage to run it at all XD its still not mature enough XD

                                                                                • Cameron Walker
                                                                                  Cameron Walker  4 weeks back

                                                                                  Oof that soldering at 11:13 hurt my soul boys. Get some flux on those joints!

                                                                                  • Rdoug
                                                                                    Rdoug  4 weeks back

                                                                                    "oh pinch it pinch it.. wait wait don't lift that up" - Linus

                                                                                    • Edrich van der Bergh
                                                                                      Edrich van der Bergh  4 weeks back

                                                                                      What if you use the 2 aquarium coolers in line with a radiator to cool the water coming out the cold side of the radiator then run it to the cold side of the cpu block and so on

                                                                                      • Daniel Shaver
                                                                                        Daniel Shaver  4 weeks back

                                                                                        Use Hailea HC-500A or higher and get rid of the rad and fans?.

                                                                                      • Silver
                                                                                        Silver  1 months back

                                                                                        Wonder if you could use this system to push OC scores. Worth a video IMO.

                                                                                        • Aaron Richards
                                                                                          Aaron Richards  1 months back

                                                                                          I had a Titan Amanda TEC cooler back in the Core 2 Duo days and it worked pretty well, was just quite power hungry.

                                                                                          • John
                                                                                            John  1 months back

                                                                                            the peltier waterblock is very inefficient. it is exchanging heat in a very small area. this test was very bad done.

                                                                                            • Billy Wang
                                                                                              Billy Wang  1 months back

                                                                                              Better to overheat the CPU and generate some electricity back from the temp difference lol