This Cooler DRAWS 545W!!? Bad Cooling Ideas #2

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We got a 545W Peltier cooler... sketchiness ensues.
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[@MiniArts159]

Alex: pays thousands of dollars towards an engineering degree Also Alex: Chop chop the bottom bit

[@desekrt0r]

Gotta use laymans terms for non-tech

[@Trancelebration]

To be honest - everything he does (at least what we can see in the videos) is very sketchy engineering-wise :D Degree wont help at all if somebody cant think like an engineer...

[@yuriibondar3757]

@@Trancelebration dude built buggies and stuff, the point of this videos is to do something sketchy, not a new super product

[@Trancelebration]

@@yuriibondar3757 Using AC SSR for DC and pretending its funny isnt sketchy, its straight stupid :)

[@Trancelebration]

@@emmaisalone yet they have time to play with cfd module inside solidworks premium package which takes a lot of time. I know I know... it has to be just "good enough".

[@jd_27]

Everything goes right - Linus: "See I told you!" Everything goes wrong - Linus: "See I told you!"

[@titaniumwo1f390]

Everything goes left - Linus: "See I told you!"

[@6slimying4]

WHAT!? 24:00

[@azureknight777]

aka "how to act like a boss"

[@idk-iu8vn]

Everything goes up - Linus “See I told you!” Everything goes down - Linus “See I told you!”

[@DaimyoD0]

Linus would make a really shitty Mythbuster

[@fluffyjello]

I love Alex's face when Linus is speaking to the camera. The face of a kid who's waiting for their parent to finish talking with their friend.

[@frivolity4614]

The face of someone who has witnessed many many horrors.

[@AdrianStaicu82]

Your peltie uses 900W to transfer heat. That means you have to be able to cool at least that amount with the water block. If you don't, both side start to heat.

[@anubhavmuku96]

@@xsjado_anon TEC Coolers have extremely poor thermal conductivity. They also have extremely poor efficiency. They have efficiency that put solar panels to shame, so what that means is - A 545W TEC can only move 5.45W ( ~10% like ultra super max level stuff), and to do that, it generates 539.5W of heat. Now coming back to thermal conductivity, that measly 5.45W of heat to be moved is limited by its thermal resistance, so what it means is it takes way longer to move that measly 5.45W of heat compared to a block of damn iron, much less a proper copper heat block. So, bottom line: you wanna freeze a few ml of water into ice spending hundreds of watts? Be my guest, and I assure it will work as long as you can dissipate those hundreds of watts. But Peltiers can never move enough thermal power from a strong af dynamic heat(one that continuously converts energy into heat, in contrast ambient temperature water that we were making ice out of before does not continuously compensate temperature since its heat energy is gone once it cools) source like a CPU. (And if you really wanna do it, like reaallllly badly wanna do it, for every 100W(around that for a TDP?) of cooling on the cpu you need around 100W/0.05(eff) = 2000W of peltier units, and heat dissipation capacity of 1900W and your peltier should would prolly still not be able to work out due to problems in thermal conductivity. LOL, this was a long rant, but will prolly save some idiot his money. PS - Imma just post it in main thread too, just in case so people can see it..

[@AryaFairywren]

@@anubhavmuku96 wait, 5.45W ain't 10% of 545W, that'd be 54.5W.

[@anubhavmuku96]

@@AryaFairywren Ah yes, right. My bad. Well, the bottom line still stays the same tho.

[@1992jamo]

@@anubhavmuku96 While their efficiency isn't as good as a gas transition heat pump, it's a bit unfair to to compare performance if you're running the TEC at 545W because that displays a complete lack of understanding of how to utilize them. The coefficient of performance of a TEC scales badly. For example I'll use the TE-127-2.0-1.15 module. If you run the TEC at 3v, you can pump ~25W of heat, with around 35W of waste heat with a temp difference of 10 degrees each side. If you run the TEC at 15v, you can pump ~110W of heat, without around 350W of waste heat with a temp difference of 10 degrees each side. That's 10x the wattage, for only 4x the amount of heat it can move from the cold side. That's why it's insane to run a TEC at 545W, it's much more efficient to run many of them at low wattage.

[@Trancelebration]

True. And there is no way that this little block can cool 500W.

[@pufthemajicdragon]

+2 points for the solidworks flow demo and real engineering talk. More of that please tyvm.

[@trif55]

if only they tried with a more serious cooling solution on the TEC

[@jzxynow2a8gs21]

-10 for the TEC on CPU, and crippling the heat transfer with an Insulator.

[@yoyodavid]

i'm taking classes on Solid works and simulation rn

[@hansdietrich83]

@@yoyodavid ok, but who cares?

[@yoyodavid]

@@hansdietrich83 nice way to be a dick

[@GTFODeathknight]

"There's no way we can just finish like this" [HARD CUT TO SPONSORS]

[@peeperization]

It was perfect. ^^

[@lees0049]

I like to think that Linus knows all of his sponsors off by heart and all he needs is someone to tell him what the sponsors is.

[@vodozhaba]

16:10 their funnel has a label saying "FUNNEL"

[@MrRedinator_]

They also have a hammer labeled "HAMMER"

[@zurbruggg]

Well what would _you_ do to remember what it is?

[@itsomegali5342]

its for people who dont know this stuff better to just label everything.

[@fur_avery]

@@itsomegali5342 who tf doesnt know what a funnel or a hammer looks like

[@dmmikerpg]

When you have a label maker, everything gets labeled. Everything.

[@Sizukun1]

You'd be better off putting the TEC cooling on the radiator to get lower than ambient, then you'd need another water cooler just to cool the TEC plate. You could get the water as cold as you want and not even worry about condensation.

[@DancingCorpse]

We're getting into Nuclear Reactor type cooling setups now. This is the LTT experiment that needs to happen.

[@aDifferentJT]

That’d be cool

[@j4nn1k_51]

Same idea man xD

[@chieftron]

This is EXACTLY what I was going to say, this is how the Coolit tec coolers work. I still use a Coolit Freezone Elite and it works amazing after 12 years. I did have to replace the pump once but the peltiers are still working great. And that cooler can easily take up to 350w of cooling and it's in a small form factor. If they adapted that method with those radiators, it would be able to easily cool 1800w. Hell those radiators ALONE should be able to take 1200-1500w with just fans. If implemented properly that setup should be able to keep that whole system including sli gpus in the water loop around ambient temps on load.

[@TheVenerableMrKrieg]

Yeah, but... What if you get condensation in your water?

[@TugAndThugComputing]

I dunno but linus is addicted to pc cooling

[@TugAndThugComputing]

💯%

[@the_guy_with_yeeyee_a_haircut]

@@TugAndThugComputing Johnny Johnny did you forget to change your account ?

[@Agant.]

You mean he's addicited to making PC.. cooler? :DDDDDD

[@TugAndThugComputing]

@@the_guy_with_yeeyee_a_haircut uh

[@TugAndThugComputing]

@@Agant. mostly yess :D

[@huntersuper98]

"So the block design is working as intended- OH MY GOD WHAT IS GOING ON HERE!"-Linus in a nutshell

[@PhaseFalcon]

I only hit the left arrow key to rewatch that about 20 times, ya know. the usual.

[@hammyboigaming904]

@@PhaseFalcon same lol

[@guscichoski]

I think it's hilarious that linus doesn't know who the sponsor is and then someone tells him and he always immediately knows what to say about about it.

[@MaxIronsThird]

ad read was off-screen, as in he didn't do it on the spot.

[@StingerGTA]

"There's no way we can just finish like this" *Finishes just like this

[@SM121982]

womp womp

[@TheDjPezzz]

i thought it you said it...

[@LaFaJe]

...waiting for a #3.

[@ipo65]

Linus: "It was a learning experience" Alex: "Yeah" Linus: "About listening to your boss next time" . . . . . . Alex: "WHAT?"

[@Desser57]

"does not compute"

[@karikrummi4222]

@@Desser57sléttu sléttu

[@bhew7409]

I'm with Alex in that one

[@ImMonoToast]

@@karikrummi4222 why is it flat

[@karikrummi4222]

@@ImMonoToast song

[@TheBauwssss]

May I suggest you try using a logic level mosfet next time instead of a solid state relay, Alex? Because as you probably found out during the making of this video, you cannot use a solid state relay to switch DC 🙄🤣 They can only be used to switch AC waveforms that cross through zero. A solid state relay (henceforth SSR) is nothing more than a triac with an additional zero crossing detection circuit. Although they are very different, the triac component in a SSR performs a function similar to that of a mosfet; where, for example, an active logic signal causes a current to flow. A very important difference between a mosfet and a triac is that once latched (and conductive) the triac cannot unlatch (and return to a state of isolation) unless the AC waveform crosses through zero, where as a mosfet can unlatch at will. This is the function of the zero crossing detection circuit; all it does is ensure that if the triacs logic signal becomes active somewhere halfway through the AC waveform, the actual latching of the triac is delayed until the waveform once again crosses through zero. Latching at any other point during the AC waveform has the serious potential of resulting in an enormous (potentially triac destroying) current surge immediately upon latching. Unless you're lucky, and the triac happens to latch precisely at the zero crossing point of the AC waveform, after which the current is allowed to rise gradually with the voltage. _[Important note: just as a triac is unsuitable for switching DC, a mosfet is unsuitable for switching AC!]_ I hope this clears things up a bit 😁 I know the chance you'll read this is so low I might as well be talking to a wall, but perhaps there is a slight chance another soul will come and stumble across this information and find it useful somehow. Who knows, they might potentially even learn something 😊 (If I made a mistake please correct me in a reply to this comment _in a friendly manner please_ and I'll happily modify this comment!)

[@jakublulek3261]

It seems that Alex, just like me, is a mechanical engineer. We know very little about electricity (I've had like 2 classes in university for one semester). I learned everything what I know when I was working in electronic retail shop as my first job. I did my master's degree on Meredith's effect and pressure carburetors!

[@capn_shawn]

SSR's work just fine with DC signals and do not require any zero crossing. There are IGBT, Mosfet and Bipolar versions from different manufacturers. You are thinking of an AC-only Solid State Relay... basically an optically isolated triac. Crydom D2D40 is a perfect example.

[@BalintNandori]

They could have just avoided the high current switching by using the enable pin on the power supply

[@hdeloya]

18:42 My favorite part of the video, it was totally necessary!

[@AndrewMeyer]

Forget the thermoelectric effect. Hook that sucker up to the compressor on an actual AC unit.

[@harambeexpress]

Linus has an AC unit based system (that does work).

[@asm_nop]

It's been done and it's very effective. Only problem is size of the machine.. it's about as big as the system it's cooling.

[@SGIMartin]

didn't asetek do double phase pc coolers at one point? I have a single phase built in a case, that runs on 12v - very effective on the Athlon 64 x2 it cooled at the time!

[@dacid44]

See, the thing is, they’re not doing this because its a good idea. They do it because they can.

[@ThePizzaDevourer]

@@harambeexpress (barely)

[@matthewto9726]

I did my HS physics project on TECs and I found that one of the biggest problems with them is that their faces are not flat at all and since they are ceramic they are difficult to flatten so I had to compensate with globs of thermal paste and even then it was bad plus hot side temps matter almost as much as cold side since a high delta caused by insufficient cooling leads to heat leaking to the cold side lowering efficiency. Future improvement could be done by flattening the TEC with an end-mill or facing on a lathe, stacking TECs, and direct contact vs an additional copper plate(that slot for the thermal-couple wasn't helping anything.

[@MegaSchoolman]

It'd probably be better to lap the surfaces with a diamond cutting compound.

[@impuls60]

So.. liquid metal^^

[@eklhaft4531]

About the piece of copper in between: I thought that too but then there would be no way to regulate the temperature.

[@trob_12]

:)

[@loudaagoo]

I was going to say, what if they removed the bottom plate and liquid metaled it the bottom of the ceramic direct to the cpu ? They never checked if the bottom plate was getting cold only the hot side

[@connerkubitz7208]

"award winning templates" I 100% want to go to the awards ceremony for best web developing templates.

[@ninja_hamster]

Linus TEC Tips

[@c0ldw1nd27]

Why not cool the water instead of the processor with a bunch of peltiers?

[@mrrooter601]

though the same thing, if this isnt the next thing they try it will probably be forgotten. cooling water would definitely work tho.

[@H3nryum]

Build a buffer of cold water and in normal use it would work great, gaming for 24 hours or even 8 hours would probably overwhelm it

[@mohawkade]

I second this!

[@4.0.4]

@@H3nryum not if you cool it with normal radiators before going extra with peltiers after those.

[@smalltime0]

I was just about to say this, you can run it at full power even. Just do a thermal coil of some sort into the radiator

[@alibizzle2010]

Who buys an expensive tap then doesn't use a vice?

[@NicoIsntHere]

alisdair butler it wouldn’t be LTT without some jenk

[@lukewhite9237]

The funny thing is they have a vice

[@Krydolph]

Linus - because what you fail to understand is, it only has to be "straight enough" - stop fussing over doing it right when you can do it janky.

[@AugmentedKing]

My guess is people who are better at using software than tools? I am hoping to meet me someone who is good at everything, let me know if you find them.

[@Darknes2DWC]

@@AugmentedKing They're called engineers

[@sharktooth31]

*Linus* - "tech cooling is and was a bad idea" *Intel / cooler master* - "Hold our beers"

[@phillstevenson4931]

Linus - "were gonna use tec, in the worst possible way you can"

[@hosseinhoveysi745]

@@phillstevenson4931 they really did the worst possible design they could. The copper part on top of the tec for water cooling it -that was actually obvious its not gonna dump the heat- was a beautiful, neat, amazing mess 😂

[@SlayerBG93]

Instead of trying to cool with the peltier directly you should try to use a standard water cooled loop setup but after the water has cooled in the radiator it should pass true the peltier then and get cooled to ambient or even sub ambient.

[@DutchHollandLowz]

DO THIS

[@JoshuaBurgess]

For future reference, get a CO2 extinguisher. It will still put out the fire, but wont hose your expensive GPU.

[@Danielsvensson37]

and maybe remove the safty pin too..... ;)

[@Z3DT]

CO2 extinguishers don't work for electrical fires. For those, you need to get a powder extinguisher. Which would, by the way, still hose your expensive GPU.

[@christopherkidwell9817]

@@Z3DT Maybe not... as long as the powder is not thermal conductive, a quick clean and the GPU should still work.

[@Chickenchaser32]

@@Z3DT just grabbed one of my extinguishers. An FE36 will work. Rated B,C so it will work on electrical fires. So no nuking components =D

[@JoshuaBurgess]

@@Z3DT Read the label. CO2 extinguishers were designed for electrical fires. They do not work on grease fires.

[@svk1324]

"There is no way we can just finish like this" DO YOU NEED A BEAUTIFUL WEBSITE WITHOUT ALL THAT HASSLE?

[@DJP4Liberty]

Have you never heard of the 437w Arctic Web TEC? I ran one for years on my C2Q9300 (and still have it). Used a heater core for a radiator with an electric car radiator fan running on 5v to cool it. Fed the 24v peltier with ~15v and got a below-freezing idle temp, with about 15C full-load temp with a 1Ghz overclock. Insulated the motherboard around the CPU (both front and back) as well as coating it with dielectric grease to protect the board from condensation.

[@meadmaker4525]

Interesting. I'd often wondered about using a Peltier for PC cooling, but not directly on the CPU. My thought was to use it more passively, in conjunction with a fan at the front or rear of the case to cool the air flowing into the case by 5 or 10 degrees while drawing only minimal power. The idea being that if the air being supplied to your standard air- or water-based CPU cooling rig is slightly cooler than ambient, you would see some increase in the performance of your cooling rig overall. Kind of like keeping servers in an air conditioned room, but in this case using a little modular box on the back of the case to create the AC effect. It would be interesting to hear your thoughts on this, Linus.

[@LetoDeWirre]

Linus: "we need it to spread the cooling" Alex: *silently cringing in the distance*

[@oicfas4523]

Alex looks so cute around that section. At 4:09.

[@jkazos]

It's as bad as when someone explains transistors by saying "the holes move".

[@TheCstokes99]

Linus 2019: 'A PID controller is like an On/Off switch' Linus 2020: 'A computer is like a spinich'

[@user-iq3dh6um2y]

Linus 2021: A spinach is like a rock

[@QPUNeptune]

Linus 2022: A rock is like a stone

[@AaronzDad]

Linus 2023: Weekends are like applesauce

[@HaydenX]

@@AaronzDad "Weekends are like Applesauce" sounds like a Dave Barry book title.

[@hawaiianryan1890]

For those who have not heard of PID controllers, it's more like a smart, variable power supply that goes positive and negative.

[@Marlin101084]

The "Oh my god!" moment of the overflow was the first genuine laugh I have had in days.. wasn't watching LTT for that experience, but thank you, I needed it!

[@jarodstrain8905]

Glad I found this video. I was about to try this. Saves me the trouble.

[@dyslexicsteak897]

Next video: Can you cool a PC with radiators from the ISS?

[@96Assassine]

„After telling you about our sponsor: NASA!“

[@russ18uk]

Overclocking from the dark side of the moon.

[@polygorg]

Well with this we were able to reach temperatures around 10K...

[@stephengeorgejaocb6326]

I know it's a joke, but normal radiators won't work in space

[@RaskaTheFurry]

What about Water cooled Mobo ..... Mobo literally in water... 100% heat transfer, nothing wasted.

[@siggitiggi]

"we have a tap wrench." *Proceeds to use it without a vise.*

[@TAVSWHBIII]

Also doesn't lubricate it...

[@dasKeks28]

Love that discussion about confidence at 16:21 :D

[@PhilipKlippenstein]

I just like that they connected PID to a relay.

[@no1bandfan]

It’s rated at 32 amps, and we’re expecting 32 amps... Yeah, I’m just going to stand back here, behind the plexiglass, with the fire extinguishers. Always use things that are rated for a higher load than what you are expecting. Helps keep things from burning and exploding.

[@MmMerrifield]

yeah, don't you generally only run about 80% of a wire's maximum rating for safety?

[@CodeHerder]

@@MmMerrifield There are rating for continuous use. Using exactly the gauge rating is not it ;)

[@georgibaldjiev4469]

Yeah... a fire extinguisher with the safety pin still in it. Very useful in case of electrical fires, I tell you.

[@Coiltec]

The relay itself is the problem: First, it's for AC power and expects the voltage to turn zero at some point. It turns off in the zero crossing. DC voltage never turns to zero, so the relay will never turn off. Also, it has a 1.6 volt voltage drop, so the peltier gets only 10.4 volts. Please use a MOSFET next time. It will work way better, and we get to see even more sketchy LTT electronics. I love these videos!

[@emperorSbraz]

do you expect LTT to actually know how to wire a mosfet? inb4 they use it in the linear zone and blow it up..

[@DocTime56]

@@emperorSbraz Alex looks like a pretty capable guy, in the case he didn't know, he'd be capable of wiring a MOSFET correctly with a Google search. It's just they don't care of doing this kind of projects more correctly, the concept is pointless to begin with

[@FlameRat_YehLon]

I assume the relay is a dumb component controlled by the thermo controller, which outputs the PID pulse to switch the relay (that switch the power). Therefore I'm not sure if it really matters if it is for controlling AC or DC.

[@TheBozzler]

I assume he used the PID as a modulating ( on/off) controller to drive the relay. Rather than a PI control loop. Doesn't look like it would of mattered tho.

[@Electroblud]

@@FlameRat_YehLon Solid state relays are usually just a box with a thyristor inside. Thyristors can turn a current on, but they cannot turn it off. Only useful for AC since the current goes to zero 100 (120) times per second. With DC, the current doesn't go through zery by itself, thus the thyristor doesn't turn off.

[@Illyclone]

Truly hope this series keeps it up

[@davidwhitt5964]

"We need to hit this thing with a Load." -Linus

[@dumpsterdawg]

Thought for sure they would cause a brownout on the west coast.

[@Combatpzman]

From only 900w? A microwave at full power is often over 1200w.

[@ZpeedTube]

@@Combatpzman Not sure if you are being ironic, but the microwave only runs for few minutes (usually), that thing is supposed to be on for hours. ;)

[@dumpsterdawg]

@@Combatpzman Anything is possible when Linus is involved.

[@Combatpzman]

@@ZpeedTube Nothing ironic about it. The point is that in the grand scheme of things 900w is nothing. Is it a lot for a desktop computer meant for home use? Of course. For example A small window AC unit, which people run for hours, typically operates between 900-1200W depending on how hard it needs to work. A large outdoor unit would far exceed that. As would say your household oven, a washing machine, and more.

[@mal2ksc]

@Combatpzman Amplifiers used for concerts are usually 1500 to 3000W, and they are often running ten or more of them at the same time.

[@slt2175]

Also, if you push too much heat into the TEC, it becomes an insulator.

[@Krydolph]

You must have watched the last video they did on them!

[@TheSkepticSkwerl]

@Owl Gaming no, it means they work. You should do it.

[@6ixpool520]

@Owl Gaming *whoosh*

[@Kyle-rb9ei]

Even though it didn't work very well i think this is my favorite episode

[@daydreaminginventor-k8957]

Beautiful design and test great video!!!

[@lynxfluff]

20:52 this whole part seems very similar to the chernobyl accident...

[@AndreiTache]

“We’re at 900 watts on this thing!”

[@zesomeone4078]

@@AndreiTache now add Mega before watts

[@mrroronoa8]

Overpowering peltier module raises its temperature instead of dropping it if heat removal isn't ideal.

[@wobblysauce]

There is a fine line of goodness.

[@bgugi]

Exactly this - at high power a TEC just becomes a resistive heater on both sides.

[@guydevries8197]

The water block is so thin

[@JimBob1937]

You're correct, I'm pretty sure the seebeck effect exists even if overpowered passed it's specifications, but it becomes that much harder to cool (resistive heating increases at a faster rate than the cooling effect) and the delta between the two sides decrease as the hot isn't cooled at a fast enough rate. The resistive heating effects always exist in it, that is why the final cooling solution needs to be able to cool a thermal load that is the peltier + the object being cooled.

[@JimBob1937]

@@guydevries8197, the massive of the water block isn't necessarily that important. The mass just effects the blocks heat capacity, but the main importance is the interface between the fluid and block, which is actually what moves the thermal energy out of the system.

[@colerees8773]

I am designing a cooling system for a giant telescope mirror. I never thought that LTT would be a resource I would use to design the thing. You guys are the best!

[@lw8882]

Watching back these older vids it's interesting to see how your production has improved; use of wide shots for conversations, audio mix with the background music being lower, and less filming of computer monitors to explain concepts all help the videos flow better, and probably make the editors jobs easier. Just goes to show that even the best still have room to improve. These videos are great, but your current stuff is even more refined.

[@Hendy5]

GEOTHERMAL cooled pc. It might be just crazy enough.

[@Nathan-te7qr]

While we're doing that lets put a PC in outer space

[@lonie-andresbalaban4618]

Do you know that that would pretty much mean heating the pc rather than cooling it

[@kot3405]

not really if the water or whatever is like 25* it might actually work

[@SimplyNon_sense]

Microsoft did it off Ireland. Works great.

[@ChaosBW]

Already been done actually.. A few years ago some startup company created a bitcoin mining facility inside a mountain. The mountain already had a building tunneled out inside as it used to be an old Russian military base. The temperature is so low inside that they have no cooling.

[@freespotify4404]

Alex: There’s no way we can just finish like this. Linus: *smiles* *AD STARTS PLAYING*

[@jedjade4002]

I'll be honest, I think Whole Room Water Cooling was one of the best things ever, and I want a new version of it. I don't know what they could do at this point, but I think it was an awesome idea, and could absolutely work. I've seen similar setups work extremely well with only a couple computers, and LTT has the capacity and means to do a "whole room" unlike so many others. Some day I hope they do a 2.0, or have a reason to. Maybe just not the editors den..

[@brianm744]

You're right about thermodynamics is in play here, specifically the latent heat of vaporization of H2O. There's an inherent heat storage capacity to water that isn't there for the Peltier device. There's also the phenomenon of the difference between laminar flow vs. turbulent flow of water in a heat exchanger. If you have laminar flow through your water block, you can generate micro bubbles of steam in the water; that steam infused water can then be pulled away from the water block's heat exchange surfaces. In turn, the micro bubbles of steam infused in the water collapse and spread and disperse the thermal energy in the water downstream from the water block. That's the "inherent" heat storage capacity of water I was referring to earlier. That's what makes water coolers superior to Peltier devices or tech cooler devices, imo.

[@SumitKumar-ce7ov]

There's no way that little water flow can stop it from overhearting

[@GarethPye]

Yeah exactly. That needed serious water flow, the water block heating up that quickly says it and/or the water flow were undersized.

[@richardk2n]

The sad thing is, that they don't understand peltiers apperently. The water was not able to get the heat away. Meaning the peltier cannot cool and will just act as a heater. Linus brilliant idea: Cranck up the heater you put on your cpu even higher.

[@fraguzz]

Thanks!! Yah i would not rull out this before they can keep the hot side alot cooler.. as i recall the delta t will drop when getting hotter.. so a theoretical hot/cold temp of 70c is not at a burning hot side. It is not a good solution power wise! I did an 85w with water on a celeron 300@504 -17c idle 0c load.. Back in the day.

[@anikdey2100]

Peltiers never gonna work on something that is actively producing heat like a CPU ... The actual cooler is the radiator here ... If they directly use it with the CPU and water block it would do better job ...

[@fraguzz]

@@anikdey2100 explain to me why my old cpu was -19c at idle and 0c under load with peltier and water.. with a room temp of 22c

[@robertlinke2666]

im getting whole room flashbacks with those fans and radiator, the cable mess and evrything..

[@KevinMCable]

I loved the ambition of the "wole-room" series. I mean you've come a long way in knowing why that can't work but it was still a brilliantly disastrous test.

[@ygkremer]

Now this are video's that i like to see! You just almost perfectly proofed the working of it and made and designed yourself! Loved it👌🏻👌🏻 We used 4 TECs with a thick copper plate on a oc'd Athlon 1700.. there is now way that one TEC is going to cool a cpu of this time. PS. 15 years ago I used to go to the junkyard, get a piece of copper, made it fit, bore holes and placed plexi with my own soldered leds in to it😁

[@Crashjr86]

You know it's going to be a good video when Alex puts on is engineer uniform...

[@windyshrimp7369]

+10 to intelligence.

[@excitedbox5705]

not a very good engineer obviously.

[@zuminlair92cp]

i think an air cooling will suit for this because TEC is "collect" heat extreme fast, air cooler just fit very well for this. Water cooling transfer heat isn't that fast compare to a huge metal fin heat sink.

[@viemarimyyra]

Alex is a genius! This is exactly what LTT should be all about! MAKE IT WORK!

[@MrAndysalgado]

Linus I love your content it really relaxes me and rest appreciate it a lot

[@bigbrotheriswatching101]

Always a great video Linus. Never give up,and I hope you continue to find great ideas for videos without losing your passion for pcs, and stuff.

[@RolandsSh]

Alex&Linus videos always feel like a what-if articles in a video format. And I absolutely love every second of it.

[@flappyandrew]

Luke was the king of janky projects

[@sirgalahad4861]

Was?

[@BlazeABD]

have you seen floatplane?

[@meloenijs]

@@BlazeABD no? What happend?

[@mazwrld]

Now Alex is the king

[@lukewhite9237]

What about the privacy monitor, Luke knifed a display

[@PunakiviAddikti]

As suggested by some commenters, it would be way better to cool the water using the TEC and stay within its maximum efficiency zone. More power doesn't mean more cooling. You'll have to dump that heat the TEC is generating somewhere or it will start to heat up. Cool the CPU loop radiator with multiple TECs and cool the multiple TECs with another loop. That way the CPU block should receive cooler water and the TECs dump their heat into another radiator so it doesn't interfere with the CPU loop. In theory, this _should_ work as long as you don't overdrive the TECs.

[@eden1925]

I want another channel that is run by Alex where he just does design and engineering stuff in a lot of detail. It doesn't need to be this kind of camera or editing quality, I'd just like to see... DETAILS.

[@zac.s]

And actually give him the time to complete projects and not have to throw them together at the very end.

[@eden1925]

@@zac.s Knowing myself and my perfectionism, I don't think a lot would be finished finished. Everything would always be imperfect and not yet ready.

[@cactusmann1268]

Thought I'd see my *grandkids* before this video.

[@Noksus]

nah you'll be dead before they're born

[@tannerboy1991]

@@Noksus oof

[@simloverify]

I thought I'd get a girlfriend before this video came out

[@dwayneattard5265]

A Linus 😁

[@ericwiedenhoft184]

thought I'd see my dad...

[@javitronix014]

Man, they should do some of this awesome invention videos with ElectroBOOM, it would be awesome.

[@thefonz2854]

Javier Macias good idea! The whole studio would be on FIRE!

[@DrakyHRT]

Shortage on 10K $$ so AWESOME!!!

[@brunogm]

They could continue this project with the awesome TechIngredients

[@arkie87]

best idea ever

[@HigherEnlightment]

8:44 was the biggest laugh I had today XD Nice one!

[@RobMost]

Why I watch LTT: 5%: Actual useful PC-info 95%: weird experiments that usually backfire

[@error53ish]

10:56 "It only needs to be straight enough" - Linus, 2019

[@LordDragon1965]

I'm fairly sure Yvonne will say that Linus *is* straight enough. But probably only just.

[@murk7667]

Why not use the peltier as a "radiator", cooling the water, and not directly on the processor?

[@TwskiTV]

And what would you use to cool the hot side?

[@BromoDragoonFly]

@@TwskiTV Another peltier obviously

[@marvinjuang5469]

@@TwskiTV elsa.

[@russiank9802]

@@TwskiTV another water cooling radiator?

[@jakekgfn]

And then another water cooling loop to cool the loop that's coolong the peltier

[@nixed8005]

Generally with a TEC set up you use it to chill the water in the loop. Then pop an air cooler on the TEC. I've done it, worked great for me.

[@JimBob1937]

PWM isn't ideal for peltier modules, it will harm their cooling efficiency. You'd almost have filter the PWM to get a varying DC signal instead.

[@jarek0737]

The best method I have found linus is a thermostat plugging in the power supply for the peltier. Having the thermal couple in the water, preferably in the reservoir of your loop. Simple as setting a target temp for you water..

[@Mindereak]

17:45 "Don't touch that!" D:

[@realcartoongirl]

electroboom: explodes and catches fire

[@panykfelidae9018]

Man, alex's stuff is getting super impressive. Kudos to you guys

[@modelcitizenvlad]

All this time I thought that Linus was using pre-recorded ad messages but because of the echo in the room you can tell he says it on the spot. Neat.

[@casey360360]

Yeah, I like my NH-D9L. All of these TEC plate experiments and my experience using water cooling, it's hard to beat an efficient air cooler. I wasn't even a believer in the Noctua hype until I tried this one either.

[@wfrancis25]

if you do water cooling aswell, then I would rather use the Peltier to cool the water and not the chip directly

[@himynameisryan]

That makes slot more sense

[@zombieswitapple]

Tecs get less efficient as the power consumption goes up so cranking it up to 900w might not be as effective as keeping it at 200w. Also expect a 10c delta across the tec so for sub ambient multiple tecs should be used with a larger cooling system

[@hank7281]

"So we got this high power module." Module. As in modular.

[@impuls60]

I'm betting on a sweet spot on 2-300w into the TEC. Any more would demand way to much from the heat sink. I think the copper water block got overwhelmed, not enough water flow and speed.

[@DaemonForce]

I do the opposite of this. I use multiple TECs in a small cooling system but the system is half-assed and intended for chilling multiple things in a water loop, not forcing heat away from a TEC in the loop.

[@zombieswitapple]

@@hank7281 im not sure what point you're trying to say. No shit the tec is a module. What does that have to do with anything

[@zombieswitapple]

@@DaemonForce they overloaded the one radiator. He calculated 500w without including the cpu heat. And even then it was at 50c meaning the cold side would be at 40.

[@justsomeperson5110]

LOL I haven't programmed a PID in two decades now, but looks like they're still just as PITA as ever. Sad to see it didn't even help. BUT (dun dun dun!) maybe putting the Peltier cooler on the CPU itself was the bad idea. What if it was used as a secondary cooling phase (so placed after the rad) to cool the water going into a normal CPU water block? So CPU - AIC - Peltier - CPU? So two sets of radiators. An AIC for the CPU and a massive rad for a janky Peltier. Arguably (not really) pointless as you COULD just use the massive rad alone to cool the CPU in a normal watercooled setup ... but where's the fun in doing things the sane way?

[@julkkis666]

I 100% agree with this and have spent a lot of time looking to see what it would take to do this. I'd put the main rad on the top blowing, and the other on the front...

[@minimanr5052]

I said the same, albeit not nearly as well stated. 2 phase cooling! Do it!

[@p.r.s8675]

Would have loved to see the entire fabrication process of the water block

[@collinhamilton6524]

The amount of shortcuts taken in this video is unreal

[@Sero3_]

Linus: But hey it was a learning experience. Alex: Yeah. Linus: About listening to your boss next time. Alex: *WHAT?*

[@lextac23]

Alex seems to really know his engineering and physics stuff. I love it! More technical talk from this guy!

[@joehoover7711]

they must have missed the thermodynamics class....

[@unboxingwithpaul]

These are the videos I like to see where Linus is actually doing work

[@alexlexo59]

13:00 you could just flip the polarity

[@abrickwalll]

They have a preferred polarity, and you should get it right if you are going to nearly double the max power

[@chrisakaschulbus4903]

@@abrickwalll it's not about the power, it's about the energy from within

[@alexlexo59]

@@Leadvest OK now i will know

[@Mxracer6y]

@Ali Nassereddine i knew i wasnt the only one FUCK lol....... I kept trying to wipe it off and then i thought my monitor was scratched

[@Mxracer6y]

@alexi Todaze goddamn you i kept trying to wipe the hair off my screen.... and then when i couldnt i thought my monitor was fucked up and/or scratched..

[@domi1711]

congrats Alex, you really stepped up your game in the last year. The flow simulation really blew my mind! Keep up this quality of content!

[@dano1307]

EKWB finally released a good version. comes out next month. It was the "mystery box" linus used to get the 10900k to 5.7 ghz. EK quantumX Delta TEC cooler.

[@crash11235]

Probably the funniest LTT video I've seen xD

[@valseedian]

long story short, linus tech tips still doesn't understand TEC's.

[@MattExzy]

"Waste heat from the TEC..." - yeah, I always thought TECs were essentially heat pumps, transferring heat from one side to the other. I imagine there's some heat from internal resistance, but that sounds a wee bit odd.

[@Armand79th]

Or much else. Standard.

[@Championjcc608]

@@MattExzy You get two separate heat sources with a TEC the heat being pumped based off the power you put into it and the heat generated from the power put into it. From everything i've seen you want to run them at 60% capacity for maximum heat pumped and minimal heat generated within the TEC. The PED was a step in the right direction but it still only controls how long the TEC is on maximum cooling like a thermostat for an A/C.

[@wymcoupe9335]

@@Championjcc608 TEC's are simple electric heat pumps. I hope Alex/Linus revisit this because they made that stuff all sorts of wrong and I would like to see a high wattage TEC implemented correctly. They need a much larger copper/aluminum block on the cold side to act as a buffer and a variable wattage power supply programmed to the heat differential in between the cpu side and the cold side of the TEC to try and keep it optimal. They were just wasting a lot of power and overloading the TEC.

[@emperorSbraz]

and also blew up the one in the vid with waaaay over spec voltage

[@freddywestside3763]

"It's probably the jankiest thing we've ever made" Alex just reminding us he wasn't around for Scrapyard Wars.

[@diewollsocke2674]

What on scrapyard wars was yankier than alex' cooling adventures

[@freddywestside3763]

@@diewollsocke2674 the DIY water-cooling episode.

[@Shadow-mf6tf]

@@diewollsocke2674 Linus climbing a tree to fill a tube with sugar

[@danieluchwal3515]

Was thinking I would love to see another junkyard wars

[@MrNlce30]

"It's probably the jankiest think we've ever made" yet

[@terminator25ish]

I really want to see more of this

[@VS-_]

their little noctua fan is adorable

[@vladutmihai1705]

I love the Alex experimental videos!! Keep it up guys

[@dportass]

"If I have to blast a TITAN RTX I'm gonna be so pissed off" I'm sure there is a cheap as crap PCIe graphics card somewhere in the warehouse they can use until they are satisfied it's booting correctly before testing further

[@Juggernath]

Would also had helped in the event of shit going sideways if he had pulled the pin for the extinguisher before pointing it.

[@herohema5]

But where is the fun in that?

[@vatankumarattri392]

This had so much potential

[@KelBShobra]

15:03 the graphics card looks like a wii from that angle lol

[@schenkov]

Der Bauer build a very capable TEC-cooler years ago. Maybe ask him for advice

[@LeonCoretz]

Is that guy even human???

[@sqeezelemon]

So you're telling me you've got a T-series temperature controller ( 5:05 )

[@twistiv]

How did you notice that? The text is so small!

[@budgetbajur]

I'd be more surprised by a PewDiePie controller

[@jacobmccloskey171]

@@twistiv don't know if this is a whoosh moment but like I noticed it without seeing this comment right away

[@nullderef]

Waiting for this comment to blow up...

[@stevenscott6658]

Man so many great tips!

[@cneuhauser1]

Regardless of the outcome...you guys do some really cool/fun stuff! That's the life guys... enjoy it!