CPU Cooling with BOILING LIQUID 🔥🔥

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[@alice20001]

14:24 "You can probably hear it" *turns up the volume to try to hear it* "GET ACCESS TO AMAZING GAMES!"

[@Angga-vd6hf]

Yep

[@nikopfalzer2987]

I love this channel for stuff like this. Everyone's personality is upbeat and I wish I had a work environment like this. :] I'm very envious of Linus' employees, they all deserve to have the great career they have. Linus is a great boss IMO, sorta reminds me of a little more serious Michael from the office Haha, he just knows when to be serious :]

[@zacharycorriveau200]

I read this comment first, still had to see if I could hear the bubbles by turning my volume up all the way. Still funny.

[@h3s128]

LOL idk why this comment made me laugh so hard..

[@SergePupko]

RIP ears... but at least that plug has now cured your tinnitus as you can't hear anything other than Linus in your head. 😂

[@frogstair]

PC: makes noise above 1db Enthusiast: UNACCEPTABLE

[@AAFroes]

Justin Roiland's voice

[@DumbguyMc]

yeah never understood this when my headphones are noise cancelling, running dead by daylight with my fans at 100% using msi afterburner, i still cant hear them at all and theres 8-10 of them in my case

[@ChrisPBacon9]

I just used all Noctua fans and it got me close enough. Those things are insane

[@notthere83]

Indeed! It was quite painful for me to migrate from my gorgeous fanless machine to a laptop...

[@turtlelore2]

*PC parts developer releases part with 0.01% improvement over previous model* Enthusiast: MY COMPUTER IS TRASH NOW GOTTA BUILD A BRAND NEW ONE

[@TonyLeach-airguntech]

Linus (ocztony here) I had a 4 board system for testing in a workshop, indirect water to water cooling as well as 4 outside mounted 360 rads in series, the loop actually coped with over 1kw spread over the 4 boards with ease, in the winter I could actually sub 0c cool a CPU or 2 for well over 4 hrs depending on outside temps. A closed loop 150w system is easy, just don't think overclocking and 100% load permanently. For say a HTPC yep well doable, 2 rads and the right design of block on the video and that can be cooled also. It's all about the block and rad design to get flow moving quickly. Shame I did not keep any pics, the pc stuff is a past life for me now. BTW the rad needs to be cross flow, rad tilted down from the horizontal, hot in the high end and cold out the low end, around 20deg from horizontal is best. If you want to move a ton of heat mount the rads outside ;)

[@juniorslothsix5562]

interesting, maybe a specially made case would work...

[@twistedkap3882]

Tony Leach was

[@burtsimmons9691]

Tony Leach no one wants to read all that garbage ab your potato pc

[@iqcq2063]

Dang man your smart to come up with this

[@BeatSkippingRedGoat]

yeah, that was what I was thinking when I saw him having the rad on the box tilted with the tubes up. Linus would get more cooled liquid get to the heatsink, if he tilted it the other way as you say in BTW. as he has it a lot of cooled liquid stays in the rad and only a small amount circulates, and it does not get enough time to cool down enough. some basic physics classes could be useful for Linus :)

[@scurra6566]

"They're waiting for you, Gordon. In the test chamber"

[@mrtuvok5578]

power to stage 1 cache in 3 2 1

[@outlinedbudgie4812]

@@mrtuvok5578 WRRRRRRR

[@zander07]

ITS NOT SHUTTING DOWN!

[@kodykj2112]

WORT WORT WORT

[@jameslovern9575]

Hello Gordon!

[@bryanphuthologo5822]

Linus: "..By sitting through this.." Me: *double taps screen to fast forward 10secs *Video jumps to theme music

[@daydream605]

I knew one day that comment would arrive. We've all done it.

[@_carter]

LTT Just hearted a comment about skipping their promotion...

[@lucasnestler6933]

You totally didn't do that. Nobody does that. We all bought a PIA account right now. Right fellas?

[@panquemadol]

what the fuck that literally just happened

[@CattleRustlerOCN]

Triple tap went straight to mobo unboxing, noob

[@FerralVideo]

"TRULY SILENT COMPUTER!" *it's making bubbling boiling noises the whole time.

[@oceanbytez847]

well the final product may be better. Also worth noting boiling noises are WAY less noisy than several fast blowing fans.

[@namefighter8426]

@@oceanbytez847 also they can be relaxing lol

[@mysticmarble94]

@@namefighter8426 You gonna have tonpee the whole time while gaming 😂

[@PandaMan02]

The calyos case was quieter. i think that got cancelled though.

[@112523]

@@oceanbytez847 i have my entire system done with air cooling and i dont hear my system at all. maybe if i start focussing on it but otherwise i dont hear it

[@timberbozz5628]

No moving parts Water: Am I a joke to you

[@talhamunir1364]

Water is not a "part"

[@talhamunir1364]

@Adam Kent what u mean

[@okkomp]

Water is part of a part but not a part. And its not even water

[@chickencurry7642]

What about the fans, though???

[@igameidoresearchtoo6511]

@@chickencurry7642 you dont need em but since this is a prototype they do need it at the moment

[@eto6197]

12:15 - Linus finally reading the manual how to arrange the setup for something which heavily relies on physics and therefore of course on the positioning of its elements...

[@kleetus92]

And then continually moves it around destroying any steady state flow characteristics it's trying to use...

[@TheCatpirate]

I still think that the Vodka cooled PC is the best one yet. As long as your PC doesn't get hotter than 26°C, there should be no problem, comrade.

[@aeinarrkrigsson]

Vodka > everything else

[@kiyoponnn]

Boris.

[@danielkrogh9748]

stay cheeky breeky

[@TheCatpirate]

@@danielkrogh9748 *Cheeki Breeki

[@CollinTheSav]

Yet it had a pump of sort.

[@josh8106]

0:44 -zed 1:57 -zee The Canadian language is a complicated one.

[@jakenkid]

Any language that uses 'zed' is wrong. Letters don't have a spelling, there are no extra sounds in a letter, and they don't require other letters to be pronounced or spelled. So 'zed', simply put, is grammatically, and historically incorrect. Just sayin'.

[@oneleggedrussianpeasantboy8243]

@@jakenkid How do you spell "zee" then? Let alone "double-you" (w)? 😄

[@jakenkid]

@@oneleggedrussianpeasantboy8243 w isn't actually a proper letter. As it is literally the combination of two letters... Dern, foiled again...

[@oneleggedrussianpeasantboy8243]

@@jakenkid How would you define a proper letter?

[@jakenkid]

@@oneleggedrussianpeasantboy8243 additionally, I don't understand the question of 'how do you spell 'zee' then?', as letters don't have a spelling (with the exception of trying to express the pronunciation of a letter phonetically), since they are the tools used for spelling... Asking that is like drinking your pee to stay alive, it doesn't work...

[@turandorf]

I usually have a stand fan running in my room when I use my comp. Never heard my pc fans. Drown out the pc fans with MOAR FANS

[@MrJMS814]

This is called thermosiphoning. It was used in a lot of early water cooled engines (Ford model T for example).

[@arkie87]

thermosyphons are the best syphons

[@ThomasLancheros-kg1nl]

Yea I knew that

[@TheSpidersoftheworld]

i have done the same thing with 3m's submersion liquid drain out your radiator add the 3m liquid start the pump up to get the sir out of the lines you want to tryed the system full with 3m liquid got poor performance but if you fill up just the lines and leave the radiator 1/2 full wow its night and day difference this is with no pump circulating the liquid .

[@ghoffmann821]

Except the early Ford engineers understood that return path must be lower than supply to the condenser....

[@jesusisalive3227]

Its a very cool concept, the pressure or lack there of inside the tubes makes a huge difference.

[@IbrahimMohammed-dd7xf]

this looks like a click bait .... clicks on the video

[@LinusTechTips]

Actually real... :o

[@Pantosoft]

Linus Replied!

[@loukask.9111]

@JECubing They're trying to do that more often lastly, it seems. Probably have people looking at the comments for some time after having uploaded a vid.

[@TheLilPorkChop]

O mai gawd. HE LIIIIIIIIIIIIIVES!!!!!

[@IbrahimMohammed-dd7xf]

@@LinusTechTips actually yah ... as in case of LN2 as it is technically boiling at -195 ... but this ... this looks like fail ... prototyping for more than 3 years and still did not work out and why the hell people send u stuff that they surely know that it has almost zero success rate ? i mean do u actually give them ideas so they can work on?? then where the hell is their RND?

[@oof6780]

DeSinc jumpscare! Btw whats with the Half Life references?

[@syvar1886]

As soon as I saw it i paused the vid and looked on the comments for DeSinc himself lol

[@jvyden4]

WE ARE THE 1%

[@FlameSoulis]

Hey guys, DeSinc here, we're about to start this Tech Tips video.

[@wavyreece2015]

i stoped and waited to look at the comments when i saw the garrys mod half life death animation

[@sourkarim9725]

Half-life source to be exact

[@c1tlr340]

Think I just perforated my ear drum, held phone speaker to ear to hear bubbling and Linus screams "Get access...." 🙉

[@pokharel_puru]

Proper tweak would be to mount the radiator in a way where the thick hot tube is positioned on the top and the thin tube at the bottom, fluid convection works better if the hot fluid enters radiator from the top and and becomes heavy due to cooling by the radiator thus exiting the radiator from the bottom creating a naturally circulating fluid due to heating(by cpu) and cooling(by radiator)... good luck !

[@kleetus92]

I was going to say the same thing... the conventional radiator is the problem here... Only other way around it, sorta, would be put the radiator sideways.... so the hot was on top and the cold side was on the bottom, but no case is going to allow that configuration.

[@ak3t0n]

@@kleetus92 What he said

[@cactusmann1268]

Next up: CPU Cooling with Holy Water

[@arsh6082]

the JESUS CHRIST rig

[@LermaBean]

@@arsh6082 Complete with priests who are a little extra touchy today

[@richardstrange8439]

​@@arsh6082 the Pope Supercrux 100 ghz ,500 extabyte RAM, 35" 256 monitor, 900 nonabyte Plasma HD.

[@idklike3210]

Speedwagon Foundation if holy water was to exist or does exist, then I don’t know what doesn’t allow it to happen.

[@jonathanwessner3456]

The normal stuff? Or the pope blessed stuff?

[@ProfGop]

Linus should do his interpretation of The vodka cooled PC

[@zxmusefabrication6134]

I can see... MOAR SILIKON!

[@amenadiel4060]

check Life Of Boris channel , he already did it

[@ronylouis0]

@@amenadiel4060 yes that's the point, Linus should do his version

[@MiGujack3]

Maple Syrup cooled PC

[@arachnenet2244]

Technically speaking, there's a big chance the liquid in this cooler was alcohol so who knows?

[@rafaelrgm1]

Well, they could use ethanol and get the boiling temp down to 70ºC...

[@TravisHammeng]

And be nice and flammable

[@hailzanzibar4881]

sounds perfectly safe

[@SianaGearz]

Why stop at Ethanol? Acetone, for better fireballs! Pentane! Isoprene, for fireballs on mere contact with air! Chloroform, for obvious reasons! Diethyl Ether, for that genuine dentist experience! Don't you want your experimental coolers to also be fun when they go wrong? On a more serious note, it's pretty difficult to ignite ethanol in this use, it is actually remarkably safe. Like if you had an open flame inside your cooling loop, for sure you'd set it alight, but i'd say you have bigger issues if you do? And it's just a wee little fireball, blink and you'll miss it. And by the way, i'm sure someone will comment ohnoes acetone & plastic tubing, well don't use polycarbonate hardlines - polyethylene, polypropylene, polyamides, siloxane, plenty of polymers are completely immune to acetone, and usually to an extent to other solvents too. What it really is? Fluorinated ketone, must be.

[@anagraphical_angel]

@@SianaGearz ok

[@olegtitov6679]

@@SianaGearz Looking at stable boiling at about 66 C when in BIOS with no load the chemist in me immediately concluded that the liquid inside is methanol (boils at 64.5 C at atmospheric pressure)... It's cheaper than any of the fluorinated stuff and has much better heat of vaporization.

[@thaboss468]

Literally looked down on my phone, video went silent - looked up to see this: 5:10

[@crispy8346]

3:49 Hey, Vsauce, Linus here.

[@haxalicious]

cc8egnsx Or am I?

[@crispy8346]

@@haxalicious (Vsauce music plays)

[@fa3zynwissowayn]

5:10 Linus.exe has stopped working

[@recker1130]

Not responding is much better

[@TheWoundedWarrior]

Apparently the 'Ignore' command works pretty well with Linus. I'm just glad the 'Abort' option wasn't selected! Not to mention there is no 'Fail' with Linus

[@j.s.radhakrishnan2006]

Linus.exe more like HEV_SUIT.exe

[@ygobe2]

X Æ A-12 Prototype

[@Timbhu]

Love how Linus keeps the intro ad spot exactly 5 seconds so that we can double tap it out

[@vickykaushik8764]

Linus - 14:23 bubbling actually makes noise, you can probably hear it. Me : turns the volume up to Max Linus (intentionally screams) - *GET* *ACCESS* .:":":".:":'::'';.....

[@affectedrl5327]

stolen comment

[@bennomachine]

14:26 *turns up volume to hear bubbles*... GET ACCESS TO AMAZING GAMES!!! EDIT: THANKS FOR ALL THE LIKES GUYS

[@bokajllensch661]

r/ShittyDesigns

[@mehpersonguy0]

*i'm gLAD YOU ASKE*-- -wait, that was a Humble ad read from elsewhere... whoops-

[@troy4340]

I think we all got fooled with that one

[@dannyliles2315]

Master samwhale T benno is a celebrity

[@fuadhassanfaruk4540]

I saw only the time stamp. *Inner me: Let's see what he is talking about. Then read the full comment. Press it. Oh crap. My ear 👂. Then reading the full comment. Inner me: Why TF didn't I read it earlier.🤬

[@Pendleton115]

I don’t know why there are so many Half-Life memes this episode... But I love it.

[@Monkeyman12534]

What was the thing at the beginning. I've only ever seen it as DeSinc's profile pic

[@namirPL]

@@Monkeyman12534 He often comments on their videos so maybe they wanted to give back. Or whoever edited this might be a fan of him

[@mr0o]

@@Monkeyman12534 it's the "einstein scientist" npc

[@ExReDeTM]

@@Monkeyman12534 exactly what i was thinking

[@necrobynerton7384]

Maybe they became big fans of half life. ...maybe air conditioners... no...

[@crazyfloridian]

At 6:25, I thought he was going to insert a joke like "Looks like the power supply is screwed" 😂🤣

[@VoVilliaCorp]

Linus: But will it work? *Random stroke attacks*

[@mcpuma8487]

Are we going to ignore that intro or what...

[@popotofyn]

HUEGH, STAHP

[@TheLilPorkChop]

I dunno wut u mean

[@nowonmetube]

Dude I haven't eben watched the whole video yet

[@CarbonPanther]

@@popotofyn Have I been that much of a burden?

[@Felix-ve9hs]

Desinc here?

[@EhRandomGuy]

I guess someone on the editing team has been on a DeSinc binge watching session?

[@TSGZeroHundred]

Seriously

[@imo098765]

Linus was going on holiday and this is what happens to LMG

[@Drachenhebron]

my brain is just screaming for you to hold the radiator vertical so the vapor can travel the full length

[@MrNlce30]

Should the radiator not be on its side? With the "hot" intake pipe on top and ""cold" output on the bottom.

[@dr1verman]

I was in stitches when he kept his radiator flat.

[@1drumshark]

YES

[@Lindaine]

I don't get it, should the fan face forward?

[@MrNlce30]

@@Lindaine It's more to do with water flow rather that the direction of the fan.

[@donaldasayers]

Boiling liquid cooling requires the condenser/radiator to be mounted with the liquid outlet lower than the gas inlet so that circulation can occur without bubbles of gas fighting the returning liquid. Turn the radiator slightly on its side so that one outlet is at the bottom and turn the cpu so that the gas can exit at the top. Top to top, bottom to bottom. Duh!

[@djritter11223]

Would love to see this retested as you said. I was thinking the exact same thing.

[@nwimpney]

Really, what this needs is a crossflow radiator so the vapour line enters at the top, and as it condenses, it runs down to the bottom of the rad, and returns to the block as liquid. I've experimented with a similar unwicked heatpipe in the past, but mine just used a large hose, instead of a proper circuit with a return. It worked well to a point, but because there was no force to the flow putting liquid back onto the block, it would eventually cross a threshold where there was a continuous bubble, and the cooling mostly stopped.

[@TheOrganicartist]

@komulista as a scientist i felt bad for the engineer who made this. Linus could at least have had enough respect to read a little bit, the lack of that small effort just makes me sad.

[@manw3bttcks]

I'm suspicious about the radiator, you'd think this thing would need as special radiator, this radiator looks like a plain old forced liquid radiator.

[@Samqdf]

@@djritter11223 Retested with the fans actually on would of helped a whole lot too

[@Yalikejazzboi]

5:12 Someone make a 10 hour loop of this please.

[@mytube001]

Memeify the hell out of it! :D

[@craterfacelancaster]

I think I'll need Linus's permission for that...

[@iMidnight_]

Thinking Tinker I’m ur first sub c

[@hijomojo]

10hr videos take days to upload, so here's a high-res gif instead: imgur.com/Ba44zZo or direct link: i.imgur.com/Ba44zZo.gifv

[@Tio-Nino]

You do it. Don't be lazy.

[@bernardevans1511]

Would probably improve flow and cooling with a custom rad that will allow gas in the top and liquid out the bottom in a vertical configuration

[@kjrzonk]

I've done that in 2003 inspired by heat-pipes, using freon. Worked well on my Athlon XP. It works mostly like heat-pipe + some convection action. My was made with one 22mm diameter copper pipe.

[@Vect0Rx]

I want more Linus with Half-Life please.

[@tituskriswanto5110]

do you know DeSinc

[@BonkedByAScout]

Bedeep de beeep beeeeep

[@tituskriswanto5110]

@@strawberrysoup1 search it on youtube

[@zacharyzubiate6619]

Desinc is my dad

[@NonsensicalSpudz]

@@tituskriswanto5110 and thats the game basically over

[@dixie_rekd9601]

precariously holding a radiator at odd angles whilst the motherboard is balanced dangerously on the end of the table.,.. mmk

[@MadScientist512]

The water's in a vacuum, hence the seals, where it boils at >27 degrees Celsius; it's a flexible heat-pipe and the water-movement is called thermosiphoning, and as the radiator also has a hot and cold end it too should be oriented accordingly (like in the photo), with the top becoming the hot end where the vapour condenses and falls, running the fans helps also :). Nice to see an old idea finally realised even if not given the best chance, there's a problem in getting the temperature down which I encountered in my own crude attempts, and it's hard to tell from this one if the makers have solved that.

[@lock3ddown883]

I know this is an old video but one thing that could make a great difference would be adding 3d printed tesla valves, especially using a sla printer. This would add check valves keeping flow going in one direction without adding possible mechanical failures. Keeping the no moving part theme. And of course I'd find another fluid.

[@AntonySimkin]

Sorry for being bitter but tesla valves just don't work...

[@RaphYkun]

really wish he'd rotate the rad so the liquid return tank would be on the bottom. I feel like that would help the circulation of the liquid.

[@pederb82]

RaphYkun Finally someone who understand what convection is and how it works. :) you are very much correct. Linus failed because of him holding the radiator in the wrong orientation. Heat rises, cold sinks. :) water always tries to be closest possible to +4 degrees Celsius on the bottom. :) hence the water will flow.

[@razeel2000]

That was exactly what I was thinking. Caught myself tilting my head whenever the wrong side of the raditor was up. :D I am curious how practicable this concept will be in the future. Hope it will be, because I like silent PCs.

[@Beregorn88]

You, and everyone else with basic understanding on how gravity work...

[@Herezjush]

he is usually doing shit tono of DIY stuff, why he didnt use plywood frame to hold radiator nad mother board right way? or use anthony to hold it for him, for hours of testing and benchmarks...

[@Khrenan]

I think he is just not used to gravity. He drops things all the time too

[@pyrosnineActual]

I did some research on non-powered cooling, and while I can't remember half of it, I do remember that you needed a long "cooling space". Some houses in warmer climes tend to keep a long line of hose snaking below their house, connected to their fans/heat gatherer. The idea is that the long distance of the cooling space ensures that one tube is "hot" and the other slightly less so, if you have two tubes both the same length, there isn't enough difference between the two and you just have two hot tubes and not enough circulation.

[@peterkiss1204]

Actually if you just put the lower end of the returning tube under the heatsource, it won't lead vapor out as bubbles travel upwards in the liquid. While the vapor tube should have a small protruding edge into the radiator that elevates the end of the tube above the sinking port (upper end of the returning tube), therefore prevents liquid flowing back. The main problem with this cooler is the pressure probably isn't lowered enough in the system to get the water boil at a significantly lower level than at atmospheric circumstances. And that type of radiator was designed with pressurized water in mind. Those flat liquid channels don't really clean up due to the capillary effect keeps some liquid in them further reducing that small contact surface the vapor could condensate on. I tried this exact method before, but with better tubing and ethanol coolant (has much lower boiling point, doesn't corrode metals and prevents any life form from growing in the loop), but wasn't really impressed with the results. Although I didn't give up the project completely as I'm working on a different radiator design.

[@matthewthorpe6594]

5:07 But will it work Find out after this second sponsor Tunnel Bear

[@SimonTekConley]

In Rural fire operations, we work with dump tanks, what's fun to show off is when you can use a hose, and move water from 1 tank to another, without a pump being used.

[@cloudy7003]

the person who edited this clearly watches DeSinc

[@LinusTechTips]

I'd say he owes me a couple references now.

[@PsychoticusRex]

gods, just hold the radiator sideways so the hot gasses go in the top and the cooled liquid pours out the bottom and you'd be there but he kept holding it flat destroying the damn flow. .... at least he didn't drop it. :/

[@vitorkiguchi4670]

@LeftBrainChoice That's not air. And he can't open the circuit, it came sealed. Even if he could, that doesn't matter because the circulation mechanism of the coolant depends on the bubbling of it.

[@chaikachan5820]

Exactly. Holding the radiator flat had it trying to work both ways in both tubes, and not giving the liquid the full loop of the radiator to cool down. On it's side with the hot 'air' side going in the top of the radiator with the cold 'water' side down should improve it a bit more.

[@Macestrom]

@LeftBrainChoice it's a passive phase change cooler using water.

[@robertvanderbush737]

I was just gonna say the same thing, I've seen stationary engines cooled using this method and it works great when properly setup

[@JayMaverick]

Ah thanks for pointing that out! Was wondering about that. Another question - should this thing be 100% filled with water to work optimally? I mean, at some point the water inside will evaporate, right?

[@rabidlenny7221]

I would love to see an episode where Alex builds a custom loop using water in a phase change thermosiphon loop. You could use water if the pressure in the loop was low enough to put the boiling point at about 50 deg C. You’d probably need to use equipment from the HVAC refrigerant sector of engineering. Soft copper lines, condensers, joining methods (brazing & compression fittings). You would evacuate the loop after construction, then charge it with distilled water to the pressure where the boiling point is about 50 def C. You’d need to make sure when you were at your max design heating condition, you still had some liquid water on the cpu and gpu. An expansion tank would help tremendously to keep the boiling point at your design cpu/gpu temperature. As you add heat to the system the temperature and volume will will rise, but since the pressure remains the same, so does the boiling point of the water. It takes 144x the energy to convert 1 gram of water to steam, than it does to raise 1 gram of water 1 deg F. So I think it would be a very efficient system of heat transfer. After all that you could get a pretty neat cooling solution with no pump, and pretty effective heat transfer making use of phase change of water (and water/steam which is basically the best heat transfer medium out there). You’d probably have a cooling block on the cpu and gpu where you got entrance to the block on the side of the block (where the liquid comes in), and an exit above that on the top of the block, where the steam leaves. Steam enters the condenser at the top, condenses, and falls to the bottom of the condenser where it exits, back down to cpu/gpu. It would just be a really neat piece of artwork on top of it. Not sure if anyone has done it before. Def would be an awesome episode.

[@StarOnCheek]

1:03 WoOow, Yankee with no brim

[@cacasordie]

Lol gotta love the half-life sound effects

[@seamonkeys12y]

> point of video is to remove all moving cooling parts, including fans > adds inefficient passive heatsink but puts 2 fans on it anyway

[@jacquesb5248]

there is case that is mostly heatsink

[@ab-lymphocite5464]

As a chemical engineering student that was recently learning about heat transfer with steam, this is quite an entertaining video that applies some of what we learned.

[@keithmcpherson7962]

5:10 15 seconds of quality linus eyebrow action

[@doctorlovera]

levels are crucial in this system. The bubble outlet must be located above the liquid return in the waterblock on the cpu and the bubble tube must reach the radiator above the connection of the returning tube to the cpu. Otherwise the gravity can't help to the circular flow of the fluid in the circuit. Water must not be the fluid and the filling microtube should be because it uses a fluid within a subatmosferic pressure that allow boiling just above room temperature but well bellow the Tjunction of the CPU. That allows evaporation in the upper side of cpu block, vapor entering the upper side of the radiator, condensation along the radiator, liquid flow by gravity to the lower connection on the radiator and descending also by gravity to the lower port of the cpu block. Fluid must be less viscous than water to improve flow and bubble trapping. that means the radiator must have a different design, so condensation can accumulate in the exit port of the radiator. I know it because that idea came to my mind 2 years ago but i dont have any engineering education so i just dismissed it

[@3zdayz]

I'll just add a quick comment on that; all of the orientations except the best one were used. The skinny pipe should be at the bottom of the resivoir, and the fat at the top, not at the same level; that will let the vapor-side be vapor in the top, and liquid side mostly liquid... in the end the pressure is 99% the same throughout the system so I'm not sure how you'd ever 100% get it to 'flow'. Put the radiator on its side, with the pipes one above another; a direction that it would like never be mounted in a case.

[@Nsixtyfourlink]

@@3zdayz That is exactly what I was thinking would be the best orientation. So this cooler could be a bit better but it would have to be in a custom case or perhaps a wall mount, like, situation.

[@RyanCianfarani]

To quote Meek Mill: “There’s levels to this shit”

[@dalehorton7748]

great looking response, until you spelled subatmospheric with an f :P

[@jdubayou9498]

Should’ve had the radiator sideways like in the picture@ 12:55

[@JM-wd3dk]

Should've turned the radiator sideways with the hot tube above the cold tube. The photo y'all showed seemed to have it that way too.

[@wingracer1614]

Wouldn't really matter. This is phase change, not really convection. If you just had to have a continuous flow, a one way valve would take care of that.

[@stephenfoster2532]

It actually does matter. For passive systems, having the radiator in a downflow configuration works better since that is the natural flow path for the fluid that is being cooled. Further both conduction and convection are involved. Conduction is the primary mechanism getting the energy from the processor into the fluid and convection is the primary mechanism cooling it back off in the radiator. In the radiator, the tubes near the entry of the hot fluid may be multiphase, but if the radiator is effective, the tubes near the outlet should be solid liquid. Interestingly, you could easily do this with water if you fill the system, then lower the pressure in the system with a vacuum pump. Lower pressure drops the boiling temp of water. With the right combination of temp and pressure, you can actually make water exist in all three states simultaneously. It's the critical point of water. A one way valve would most likely prevent the system from operating. Yes, with the passive systems you have flow, but the only head pressure developed will be the velocity pressure generated from the momentum of the fluid itself. A one way valve, regardless of the type, will induce a pressure drop to great for the passive systems to overcome and thus flow will stop. Changes in pressure are what generate flow.

[@PsychoticusRex]

Thank you. I thought i was the only one who saw that.

[@nickem7]

What about connect one pipe straight to the faucet and the other to the drains? ABSOLUTELY SILENT cooling system!

[@soupwizard]

Just live by a river and use river water as inlet cool water, discharge the hot radioactive water back into the river!

[@zarmaanful]

@@soupwizard Do you mean the revolutionary "Industrial" way? XD

[@tonyb586]

The "gamersnexus can you hook me up with a job?" (10:24) joke hits different now.

[@homer0919]

Linus builds multiple computers a week why does he always make every build seem like its his first build with him fumbling around w everything

[@carlososorno]

For the memes...

[@Srb003ds]

@Anon 1 lmao why do you sound so mad

[@orkell8195]

he actually does not build multiple pc's a week, he puts together some test benches. He rarely builds for youtube.

[@carlososorno]

@@Srb003ds the dude is mad MonkaS

[@juliuscaesar916]

It’s so helpful how Linus always makes his sponsorspots 10 seconds, so you can click the quickskip without losing any of the video

[@minamatta1116]

This is amongst one of the most interesting videos that I have seen. This, in my opinion, is what separates LTT from Jayz and Bitwit. LTT experiments with far more new equipment and is not just building a new pc everyday.

[@robmckennie4203]

The bubbles in the tubes are giving me flashbacks to the scenes with bane in Batman and Robin

[@suborgtfo.4433]

1:21 By sitting through this sponsor spot. • • • • Skips 20 seconds forward as always.

[@nowonmetube]

Actually I didn't this time, because I was curious which VPN provider it would be

[@jeder6915]

by skipping 20 seconds, you probably missed probably the best intro there was to date

[@FalloutNewNarwhal]

@@nowonmetube Not NordVPN for once.

[@Lambda_Ovine]

I watch them twice.

The man deserves to make money through sponsors. Even if he is an alien... as in not an illegal alien but just a Canadian.

[@nekogod]

Cooling by boiling is not particularly new, that's exactly how fridges work.

[@Youjellyman1]

How fridges, most home AC's, power plants, car AC's, heat pipes, etc. work

[@virtual-adam]

Einstein refrigerator.

[@madunwerkstatt3093]

It's called thermo-siphoning. Early automotive water cooling works the same way. Liquid used in the thermal solution had very low boiling temperature. The boiled liquid turned into gas and carry heat away from heat source. Once the gas cooled, it return to liquid state and continue the cycle all over again.

[@calebbernard9976]

Can someone make a gif of the Linus eyebrow raise? haha thats golden

[@KingBenjamin77]

I LOVE the half life editing!

[@themotorfreak1]

DESINC?!?!!?!?

[@vagabundo6409]

Actually the der8auer's prototype has a tiny reservoir and seems to be a bit better. We will see :)

[@brentgreeff1115]

that is a spectacular system build

[@rokadamlje5365]

That uses some Notec fluid with boiling point around 30 i think.

[@acquacow]

@@rokadamlje5365 novec

[@youMarv21]

@@acquacow www.pcper.com/news/General-Tech/Computex-2018-CaseKing-and-Der8auer-Debut-Phase-Shift-Cooler-AIO-Prototype

[@kanarie93]

they should use iso-pentane as solvend, it boils at 28°C degrees so the cpu block technically won't go much over 28 degrees, altough you will need some beefy fans to cool them enough to prevent overpressure of the system altogether which is very dangerous. Cooling will be great as long as you can cool the solvent to get liquid again.

[@ChattyrBoxPIPN]

Everyone seems to forget that we actually saw this cooler on the 23rd of December in 2018 when Linus & Crew did their shelf cleaning. Which means even after it was sitting on the shelf for all that time, it took another 3 months just to make this video. Way to go Linus!

[@HoliTalksAboutStuff]

Linus trying to sound smart while also not knowing what the fuck is going on really makes me happy.

[@mrfinder18]

I mean technically its been done. Liquid Nitrogen, which ive seen people attempt cooling solutions, is a boiling liquid. Just happens to boil at -320.4°F or -195.8°C LOL

[@greebj]

Derba8er has a few videos using some kind of 3M Novec fluid with a boiling point of 61C. There's even one where he dunks an entire laptop in a bucket of it - while powered on - (but because there's nowhere for the gas to go, results sucked)

[@kopai555]

you need radiator to be completed vacumed and 100% no air while you got cooling liquid that got so low boiling point to be working at best efficiency i think (likes copper heat pipe) @bennyg

[@kian8382]

@@kopai555 that could make a big difference really, by decreasing pressure the boiling point will become lower, helps when idling; and while boiling it will help maintain a much healthier pressure inside since no one would like that mysterious liquid blown out.

[@kopai555]

@@kian8382 Yup exactly and if you got big fin/heatsink to remove heat out those vapor will condense to liquid faster

[@bigchungus7050]

@@kian8382 doesn't increasing pressure lower the boiling point?

[@agus2001]

You have both pipes at the same level. The intake side should sit lower than the hot side. Since heat rises yada yada yada, once cooled by the radiator it should go through the cold side and come up from the bottom.

[@Veyron722skyhook]

And now Noctua are making their own version of this

[@KayoMichiels]

1:13... Me and my dad used to work on a very old car (1908 FN)... so old it didn't have a waterpump but it had a giant radiator: when water heats up it gets lighter and moves up, it goes in the radiator and by means of passing air by either the car moving around or the fan, the water gets cooled condenses and moves back into the engine and the cycle starts over... this is is called "thermosifoncooling"

[@richardprice5978]

some early ford motor car company / usa made models are that way or just a rad fan and no belt driven pump

[@richardprice5978]

ps. its a crapy idea for a ice engine as it doesn't let you make big horsepower ( without damaging it ) but it does have quicker warm up times to normal operating temperatures

[@KayoMichiels]

@@richardprice5978 Yeah... back then, the engines looked more like modified steam cylinders.... cars where nothing more than just 2 steel beams and some wooden cladding...

[@RexinOridle]

Guessing that's 3M Novec. I've done the same thing with methanol before. Only worked at higher temp due to the boiling point.

[@wobblysauce]

Novek does get around these days.

[@nickopedia5669]

I would think acetone with its 56C boiling point would do quite well at a 50% fill (as it boils, the pressure will increase and I'd guess it'll stabilize at about a 70C boiling point when at full tilt). Just have to ensure the plastic tubes are compatible and wont get eaten, and that everything is positioned properly (unlike Linus in this video lmao. He almost hit it at the very end when he got the radiator tilt correct, but he still missed the positioning in relation to the CPU)

[@RexinOridle]

@@nickopedia5669 Acetone tends to destroy pretty-much everything other than metals, especially at higher temps.

[@nickopedia5669]

@@RexinOridle according to plastics international, ECTFE, Flourosin, PTFE, PPS, Polypropelyne, HDPE, and nylon 6/6 all get and A grade for chemical resistance to acetone. We can pretty much ignore all the flouromers due to how absurdly expensive they are, but HDPE looks the most promising, as does PP, PPS, and Nylon 6/6 (although due to a lesser extent because of their higher absorption rates meaning the acetone may need to be added every 2-3 years instead of maybe 5-6 years) Another nice thing is that HDPE tubing is a very readily available item from the hardware store, and although not super flexible (unless you can find bellows-style hoses like in the video), it is easy to form with a heatgun to do a "hardline" style setup.

[@nickopedia5669]

And crap now that I've done all this research I'm seriously tempted to do this to the old 160 watt LGA775 workstation. The only issues I can think of is that my radiator (an old heater core off a car) has unknown plastic end tanks, and making a new non-acrylic top plate for the water block. (that part is easy enough on the CNC machine, but my surface finishes have to be really good to seal to the copper base plate with the weak clamping force that the 4 small bolts can provide).

[@bjornnjurling7008]

I think it is supposed to work like the bubble-pump in a coffee-maker. There are stem bubbles forming that float up pushing the liquid as it expands. That's why it should be mounted vertically with the large pipe up, liquid+steam takes more space than just liquid.

[@thatonedude5237]

There aren't very many fluids that will go from a gas to a liquid around ambient temperature. It is definitely something of a low boiling point kept under pressure or a high boiling point kept in a vacuum. As to what it is I do not know. Possibly methanol put under a few hg of vacuum. It naturally has a boiling point around 64c and a vacuum would lower that substantially. That would explain not using typical plastics or rubber seals. It does not however transfer heat so well so it would have to stay quite cool to do the job which further supports it being under vacuum.

[@mangostechcorner7107]

11:11 Linus be sounding like Sir David Attenborough lmao

[@chillybilli9310]

I am so thankful to Linus making me feel better about my assembling skills 😉❤️

[@davidchristoffersen1404]

As an egeineer I can tell you saying " Do not evaluate this as a finished product " is a great and smart move that a lot of engeineers could learn from , I always say " I will never release something into the masses, that I have not fully tested myself and someone has double tested for me"

[@NocturnalRS]

Maybe some kinda hybrid unit can be developed to help with idle temps.

[@dayyou]

That intro lmfao

[@klim4x]

ask der8auer. This may be 3M novec.

[@victorunbea8451]

doesn't look like it. 3M has about 55degC boiling point but the CPU stays between 68 and 100+ degC, plus those Novec grade A-holes made it incredibly hard to get the juice in anything less than bulk (or maybe that's just in Europe) It looks more like an alcohol. Could also be water at a reduced pressure as well but those hoses look too flimsy for negative pressure fluids. Trust me, I've had the idea ever since I saw Novec submerged server racks and I've researched the possibility

[@sasjadevries]

@@victorunbea8451 Well, there are different types of novec, usually the label says NOVEC-XXXX with 4 numbers at the end. Different novecs have different boiling points, and it could even be a mixture. Apart from this NOVEC is just a brand name, 3M is not the only company to sell this molecule. And since it's convined as soon as it starts boiling the pressure increases, and it takes the boiling point with it. But still my intuition tells me it's something way cheaper than novec that's inside that loop. Obviously Linus didn't do any tests to let us guess what's in there, like squeezing the line so that we can see how flimsy it actually is. If it was a line that you can't squeeze down at all no matter what temperature it's at, then it would be capable of holding a vacuum for example.

[@hotsaucebeliever]

The two tubes act as heat pipes , there's no way currently that isn't overcomplicated to make sure hot and cold are separated without a pump forcing the fluid in just one way.

[@joarandrehansen]

A wild guess: The "fill port" at the block may initially have been used to fill the system to a certain level with liquid (most likely water, with additives). By sucking out the remaining air to make a lower pressure inside the system, the water will boil at a lower temperature. The "fill port" is then sealed to avoid any air entering the system. I guess the clear tubes are ribbed to withstand the negative pressure......to stop them from imploding.

[@Andlekin]

Seems promising. I think that having a vertically-oriented radiator, entirely above the CPU, would make the most sense, so the hot gas moves to the top of the radiator, and liquid comes out the bottom back into the CPU block.

[@angelobartolomeu5679]

No because you would decrease the airflow by convection. The ideal is a slitghly tilted configuration in the horizontal plane, so all the fins receive a fresh airflow

[@_BangDroid_]

Task Manager in Win10 has always reported wrong CPU speed for me. Compared to CPUZ and HWiNFO64

[@notmirelnam248]

The problem with arguing that water cooling is silent is that it still requires air cooling (fans) to dissipate the heat from the radiator. I still think that the Dark Rock Pro series or Noctua's NH-D15 is the proper solution to high end cpu cooling. Pretty darn silent, great temps, and low maintenance. Air cooling is still the sensible choice for the average user. Unless you consider water cooling a hobby in itself that you find enjoyment in, the cost-benefit analysis is more favorable towards air coolers.

[@neojack333]

very true. but watercooling helps whe you have a lot of high end parts, that you want to OC, in (relative) silence. custom watercooling is an art, if you do wrong it could be worse than aircooling. but done right, it's thrilling to have your PC at full charge (CPU + multi GPU), and no more noise than at idle. No aircooling solution can do this but yea it's very niche.

[@BrutePhysics]

You’ve made a refluxer. This concept is used in chemistry labs everywhere. The design might work better if they model it after a reflux apparatus with an inner core and outer shell rather than trying the two separate tubes method.

[@DyslexicMitochondria]

Lol i thought you were taking a break. But seriously I really admire your persistence. I can never ever upload at your speed. Keep it up.

[@mattearenzi8972]

lol

[@psychobotLoL]

he did, YT is 2 weeks behind

[@manospapad2087]

Do people still don't understand that youtubers pre record videos?

[@danman9847]

hes done this every video hes just a moron lol

[@joalmeria891]

"Instead of having the two forces work AGAAAANST eachother..."

[@okuyashoe_official]

I love how seriously but not seriously this channel takes itself

[@Kelna91]

I made a similar prototype pumpless watercooling system with my father in 7th grade around 2004. We used a big-ass engine cooler as radiator and we placed it much higher above the CPU. And IMHO this aspect is crucial in case of gravity-assisted convection cooling. We didn't have money to buy new material for the construction, so we used scrap material what we found laying around the house. This resulted in a practically failed project because our system ended up having too much flow resistance. We completely redesigned everything but we didn't have the money to buy the stuff needed, so it remained theoretical. The gen1 prototype did cool the CPU but it wasn't effective enough and the CPU throttled. I'm quite confident that gen2 would work though. I even applied for a patent but again, I didn't have the money to pay for it and actually have it registered.

[@Kelna91]

@k0p I probably have pictures somewhere but I absolutely really don't care about what others believe. My points are valid without my prototype being built or not.

[@Kelna91]

@k0p "When questioned" - in fact I stated that in my OC. And yes, I didn't have any money to fund this project as I was in 7th grade (13 yrs old) and my father was broke. I'm not from a wealthy country, this was not uncommon in those days (nowadays neither). This was 14 years ago. And you ask for a picture. I'm not even sure we had a digital camera back then and I'm not sure we would have wanted to use a film camera to document this. In retrospect, it would have been a good idea. But I'm pretty sure I have some of the hardware remaining somewhere. To add, my father is an HVAC engineer so this was his field to a degree. He had several inventions and held different patents. But in this project I had some creative value added. But why do I even reply - Mr. Sceptical doesn't believe a thing without an audited timestamped proof.

[@Kelna91]

@k0p What do you mean by "on"?

[@jparker509]

Any super critical liquid in that should work and one large pipe would work better. It's soldered due to the vapor pressure of the super critical fluid. I really hope they are using something other than butane or propane since those have vapor pressures near 100 psi

[@dylzu]

1:43 i only thought you got turned on by sandals

[@ralph1660]

is it me or did Linus look like crash bandicoot when he was doing the eyebrow and eye thing at 5:20?

[@hdrenginedevelopment7507]

It’s called thermosiphon cooling...used extensively in huge central industrial refrigeration plants usually boiling liquid anhydrous ammonia. Drip coffee makers also use the same effect to pump the hot water up into the filter basket. It works because a pipe full of liquid exerts more static pressure at the bottom than a pipe full of liquid and vapor, so the difference in static pressures create flow. There’s a lot of engineering considerations regarding the expansion ratio of the working fluid, having the right size passageways in the heat exchanger so that the rising bubbles draw up the liquid behind them more effectively, and being able to evacuate all of the vapor from the heat exchanger effectively so that it doesn’t get vapor bound. They should choose a working fluid that boils at a lower temperature than water. Water is actually difficult due to its massive vapor expansion ratio compared to most refrigerants, besides the fact it doesn’t vaporize below 100°C at atmospheric pressure.

[@WarriorsPhoto]

Exciting times we are living in. I would love to see a TRULY silent computer. Now, that's right around the corner.

[@redrock9319]

Mobile?

[@jr_kulik]

I remember seeing a showcase on this channel of a computer case that’s basically just a giant heatsink, it weighed 50 pounds but it cooled any CPU completely fanless.

[@itIsI988]

Except for the coil whine and electrical noise...

[@devinchaboyer]

my potato laptop is a TRULY Silent Computer, it has no fans and has eMMC storage, so completely silent, it's a Acer Spin 1

[@itIsI988]

@@devinchaboyer Same with my Surface Pro until you unmute it

[@ajkane1997]

I love how he goes straight to prime95

[@Thoringer]

Like the "NO please check" in the background with the eyebrows - says it all.

[@jeronbernal3344]

"this is the hot side..... and this is .. the .... this side is hot too" hahah