I can’t believe this worked - Whole Server Room Pool Watercooling Part 3

[@aeonturnip2]

LTT and DIYPerks both doing a pool-water cooled PC within an hour of each other - priceless.

[@user-yo6xb6ud6d]

Hah I just came here from that vid. What are the chances.

[@danielberrett2179]

Same

[@AlbertWeijers]

@@user-yo6xb6ud6d DIY Perks wins this one for me. It's genius and looks amazing as always.

[@tagg8233]

Super weird but I'm here for it

[@janmortensen9314]

same

[@192347001]

As a boiler guy I am happy about this project. For the final install you may want to incorporate a couple things. 1-Get the heat exchanger. For an application like this you almost require it for permanent operation. 2- You will need a expansion tank for the pool/glycol loop. your server loop can be open loop and not need glycol or any real pressure. 3- install a axiom (or equivalent) tank for the pool/glycol side to maintain your glycol/pressure without needing to add back flow prevention. (add a vacuum breaker to that hose connection in the basement) 4- size the pump correctly, unsure of what you have at the moment but a grundfos 15-58 is a good pump for single loop applications without going overboard a 26/99 has better head pressure but has way to much flow for a single 3/4' loop and will kill it's self way to early. 5- I use glycol as a generic term. Recommend getting rid of that automotive glycol and picking up a polypropylene based glycol (with inhibitor) from the same supplier you got your fittings. with ethylene/ automotive coolant leaks pets and animals can die if they drink it. side note you need at least a 20% glycol mix to prevent algae growth but more that 30% you will have to up size pumps to overcome the extra viscosity.

[@scottgardiner7418]

Agreed. You need an HX and a quality glycol with the proper corrosion inhibitor package.

[@fridaycaliforniaa236]

This is like Chines for me, but you seem to know your thing, so nice comment ^^

[@crowman6330]

Why the heat exchanger tho?

[@Silverbullet767]

​@@crowman6330to exchange the heat, I am smart.

[@skyhigh24]

@@crowman6330 The Loop from the Pool (the one with the Stinky Water) will NEVER be clean (even if you use Chemicals against Bacteria/microorganisms) and you need AntiFreeze (Glycol) for it to not freeze in the Winter. Dirty Water and AntiFreeze are NOT what you supposed to use in your PC Loop. It will block all the MicroFins over time.. Slow at first but the Longer it runs the Muddy Water, the more Muddy it will get and the faster it will block them. The Exchanger is a 2 Path system to split the Loop in 2 Loops, one with muddy Water for the Pool Loop and the one with clean water and without antifreeze for the PC. So it dissapates the Heat from the PC Loop into the Pool Loop and takes the Cooling from the Pool Loop into the PC Loop, thats why its called "Exchanger" ;)

[@MrMaccaMcdonald]

I love how quickly this went from completely organized to sketchy and "temporary "

[@zigi-sv8ij]

Did you watch till the end. It was a effing success!

[@Raii_Chu]

I read this comment as the video reached 11:48 😬😬

[@sadmanh0]

@@jjann54321 he probably just didn't get enough time to do the research for all of that, only had half a day after all.

[@jermwerty]

Or how if Linus just googled "rear door heat exchanger" he could cool the whole rack and not need waterbocks on every piece of equipment! Watercooled racks are a thing...

[@DanielCrist]

LTT will single-handedly be responsible for changing the definition of the word "temporary"

[@eviladm1n]

I highly recommend a moisture sensor/alarm on the lowest part of your floor so when this leaks, you have a chance to fix it before a small mess becomes huge.

[@steingat]

I foresee a video titles "I flooded my server room" in the near future

[@BerserkBrownie]

@linustechtips you should

[@Carniak]

I notice you said "when" rather than "if".

[@jjlortez]

@@steingat I don't foresee much in the near future

[@DanielFerreira-ez8qd]

@@jjlortez Thankfully, fortune-reading is not a real science

[@gniludio]

Linus: Lets buy a new house. Yvonne: Great idea. Finally no more janky setups. Linus: Lets water cool the pc with the pool.

[@jeremylindemann5117]

Canadians tend to be more yonky than yanky.

[@GordonChil]

"Brrr... the pool is cold. Hit it with the prime95!"

[@rysterstech]

​​@@GordonChilbetter yet, do crypto mining on them.

[@Tupsuu]

​@@rysterstechWell if you must heat the pool then that would actually be quite smart compared to resistive heating.

[@agmass]

@@rysterstech That might brick the pool heater- sorry, the gpu

[@assafica]

We've graduated from Linus dropping PCs to straight up throwing them into pools

[@itsmenotjames]

here before this blows up

[@Soni-jd4li]

Now we need him to drop it into lava

[@CanadianBakin42O]

69th like

[@NitsuSaiNeko]

He now drops himself too as a free bonus

[@armandasm3810]

lasang

[@DrathVader]

You should DEFINITELY do a heat exchanger. The blocks would get gummed up with no time, like with whole-room water cooling.

[@cangaroojack]

Isn't it weird that almost at the exact same time DIYperks published a video of him building a pc that submerges under water and uses said water for heat exchanger?

[@Helveteshit]

He will do a filter instead.

[@MiGujack3]

@@Helveteshit Filters get clogged as well.

[@elmfuzzy1]

@@MiGujack3 Filters are a lot easier to clean or replace than cleaning water blocks

[@taylortrombley96]

And glycol will most likely gum up the fins in the water blocks. Separating the loop water from the computer loop. Computer loop can be nice clean distilled water and the other loop can be full of impurities and glycol without any worries. Fins in the heat exchanger might eventually get dingy and need a wash but it will be better than all the water blocks needing to be changes

[@LifeWulf]

Linus slowly turning over and going, “noooo” after being thrown a towel at the end was hilarious 😂

[@dafoex]

It was funny but let's not get ahead of ourselves, here

[@bass-dc9175]

The fact that Linux uploaded this on the same day as DIY Perks and his submersible PC (A PC which uses a pond to cool itself) Is fascinating.

[@samsowden]

ooh, there's a new diy perks? NEXT UP!!!!

[@dlabonte1446]

They also did the desk PC on the same day

[@alexmir1763]

On the same day? Try ON THE SAME HOUR!

[@_shadow_1]

Proof that we live in a simulation lol

[@aarongrey6848]

DIY perks video is better imho

[@SukoSeiti]

What I love about these janky videos is that we are guaranteed to have a second video on the same subject, but now done by professionals.

[@teslatrooper]

That rock is still in the system, shouldn't be too long before _some_ kind of update will be needed

[@ShayanQ]

Oh you don't even have to wait, fiyperks released a vid on the same concept literally an hour later

[@gergogaal568]

@@ShayanQ not the same concept at all

[@alexrogers777]

yeah bring on plumbing Brian

[@memelephant]

the fact they didn't do a heat exchanger is crazy

[@BilboOfc]

Yvonne:"Let's warm up the pool" Linus: *Proceeds to run benchmark on every computer in the house*

[@Nicmadis]

Inbefore he moves ten editors into the garage and hooks them up.

[@JimRichardHartmann]

Nah, he just tells the kids its minecraft time..

[@aquacaloris]

Pool : gained 0.000000000000001°C

[@christiangaming4131]

​@@JimRichardHartmann😂

[@DeithWX]

Alex and Linus cooling shenanigans is my favorite series.

[@deadlyspore3354]

nice

[@NotCollectedNorCalm]

I love the duality of Alex being there smiling excited to work on anything and then there’s Jake who is very knowledgeable and trying to get it done so he can move on with his day

[@starbuckqbb2287]

Process water engineer here. Whatever filter you’re using needs to have tighter tolerances than the water blocks. A typical 20 mesh strainer won’t cut it. Highly recommend using that heat exchanger with a DI loop for your rack. If you really want the massive thermal reservoir then get a small buffer tank. It’ll be just as effective and much easier to maintain.

[@nullptrRL]

Yep, needs a heat exchanger.

[@FoxedWorks]

And im sure you could partner with a 3D metal printer firm that might have been at LTX? And print a funky all copper gyroid heat exchanger

[@aa-lp1ho]

A heat exchanger is overkill for him as an operator. It’s much more practical to just periodically replace the water cooling components. He’d replace them periodically anyway.

[@nullptrRL]

@@aa-lp1ho As long as "periodically" doesn't mean once per month; which it might with the current amount of gunk potential with this length of a loop and these pipes.

[@jvandervyver]

It is a closed loop system, why would it need constant filtration?

[@nomisukeindustries]

For future reference: any time you connect your water to a pipe or hose outside your house, you need a backflow prevention. This stops the nasty water from the pipes from getting sucked back into the house and contaminating your clean water. UPDATE: I'm referring to the main water supply that he hooked up to the dirty pipe outside to flush it, not the loop.

[@Rawtashk34]

THANK YOU!!!! Watching this video gave me a bunch of anxiety because of that.

[@Neuzahnstein]

I would use at least one heat exchanger for decoupling the system.

[@alfredovasquez774]

wouldn't installing a simple replaceable water filter do the job?

[@CYWNightmare]

​​@@alfredovasquez774idk about for backflow but here in America you absolutely need a backflow otherwise they would make Linus rip that all out and restart *Edit correction to my statement it's only if you connect to public water your own private stuff is your business

[@prawny12009]

I doubt this would be a direct hook up to mains, it is more likely to have a closed loop with a filling stop tap like the central heating side of a combination boiler.

[@micheal8414]

As a plumber/ pipe fitter of 22 + years I spent this whole video laughing my ass off and yelling at my monitor ( Oh god pls don't do that don't use that fitting , no that's the the wrong application ) Great vid guys are crazy .

[@Njazmo]

Yeah, that "plumbing" was so wrong at many levels. Hire an expert next time. 😂

[@Zaharon]

Heating Engineer & Plumber of 12 years and this video just had me laughing. Also something that was never mentioned, lagging the pipes in the in the house would greatly help in dumping the heat outside of the house and not having the pipes work as makeshift radiators. Come to think of it that was one of the major issues on their very first whole room water cooling video as well.

[@Zaque-TV]

Everyone has to learn at some point that you can't tape a hose 😂

[@somdood3292]

Job weld water weld hahah

[@Buenosaurus-Rex]

Linus doing the rounds on Blue Collar/Techie Crossover Comedy, the duo you would never expect or believe to work well lmak

[@ydfhlx5923]

You can always count on any video with Alex being janky. And I'm all here for this.

[@Alleroc]

Same. When they kinda stopped with the janky videos for a bit, and I was quite sad. They've ramped them up in recent months, and I am loving it.

[@rizkisyarif14]

Jank is the way of live

[@DJphotoandtech]

"this is one of the worst things we've done in a while" I love when even Alex admits this

[@Jessev741]

I'm so glad that Linus doesn't give him more time to prepare. We want the JAAAAANK!

[@mehgend3914]

I always knew waterlogging my tech wasnt stupid and it actually was innovative

[@kaylons]

Schrödinger's mid tower PC

[@Antilles_Gaming69]

​@@kaylons🎉bpsbpdps

[@necrothitude]

Some major "whole room water cooling" flashbacks from the second house studio, and the jank hasn't aged a day. Great fun!

[@Im_A_Watermelon]

the comedic visual of the rock slowly going through the pipe at 17:16 is hilarious

[@samwisegamgee2488]

What I am most impressed with this video is that Alex actually used his education to calculate the energy require for this system. Incredible.

[@RandomOrdr]

Casually ignoring Bernoulli's though.

[@Kycilak]

@@RandomOrdr How would Bernoulli's change anything?

[@robertjusic9097]

@@RandomOrdr The only thing Alex ignored is that the tubes dont have insulation meaning they are getting cooled by the ground as well as the pool

[@RandomUser2401]

@@robertjusic9097 weeell and using ℃ for a temperature delta.. but oh well

[@albertobueno7805]

@@robertjusic9097 To be fair, he said "ignoring losses". Obviously the enormous surface of a fucking pool is a loss, but I think he just wanted to prove a point, and it worked.

[@Kooooshball]

Being a guy that builds pools and is a plumber this is both amazing and hard to watch. I'm glad it worked lol

[@YagiChanDan]

Professional plumber and heating engineer - the pain is real.

[@1480750]

Am I wrong in thinking that large quantity of water did not get in past the caps? Either they left it uncovered for quite some time, or theres a crack or other leak in the lines. After finding that water in there I would probably decide to use those lines as a chase to run new pex rather than run my actual cooling medium through them

[@stoneboy42]

Talk about over complicating a simple single zone loop!

[@runed0s86]

I also watched a few KZbin videos about this, and it's amazing how bad of a job they did.

[@dukeljk2191]

@@YagiChanDan Heat Engineer, lol. Let me guess you live in California?

[@Loran425]

Glad Jake brought up the heat exchanger to keep the cooling water to the system clean. Can't wait for the I killed my cooling block video. Keep up the crazy ideas guys.

[@jedi_wolf]

Biological ladder is the best dad joke ever. The bewilderment on Alex's face is the best part. 😂

[@dumpsterdawg]

LTT: "I can’t believe this worked" 15.6M subscribers: "Neither can we"

[@PhoticsTV]

I had forgotten about this project. I'm glad they could make it work - nice! 🙂

[@OrangeYTT]

Damn their sub growth is that stagnant? 9 months later, and they're still at 15.6 million...

[@klashnikov22]

Jake's face when Linus told him they're ditching the heat exchanger is priceless

[@BONKOYT]

Jake's foreshadowing at 11:25 is craaaaaaaazy

[@The_Brozilla]

You should do a heat exchanger like Jake said to. The water is going to be so gross and will cake the water blocks in nastiness.

[@JonathanCF0]

If they can manage to clean the loop, it is completely closed. I don't see an issue with a simple filter for things that get missed in a proper full purge.

[@capralmarines4043]

It's a closed loop, no? Why would it get gross.

[@friday5670]

Bacteria is the PVC and the water.

[@RedShotCreation]

@@capralmarines4043 Exactly :) Closed loop with NON-distilled tap water. If they don't apply some sort of antibacterial agents, the water is be nasty.

[@javierolavarria]

They need distilled water. Distilled water is less corrosive, less viscous, and contains fewer microorganisms but for safe is better add biocide and a corrosion inhibitor to the water.

[@TheDragonDesigns]

You know its going to be a fun video when Alex is the planner

[@TheProdigalGoob]

yeah when Alex is involved its always chaos and I love it. I love how Linus just lets him do w.e too it makes for great content lol

[@Bottlebitz]

Alex is the shit ngl

[@aeriumfour6096]

The man's given up trying to make a heat sink and skipped straight to turning a pool into an AIO

[@LilPeener]

What kind of monster doesn't prime the PVC pipe before adding the glue to it 😮

[@MRJMXHD]

Some people hate Alex tho, claiming he's too janky to be an engineer.

[@_aullik]

I agree with Jake, adding a heat exchanger would make A LOT of sense. Sure it would increase the temperature a little bit but it would also save your computer in case any debris gets into the plumbing.

[@jonsen2k]

As it is set up now, it's almost certain that it will not be "set and forget". And a counter flow heat exchanger dimensioned right won't give any significant increase in the temperature.

[@VilasNil]

The "Hey don't splash my shoes" would've been a great segway to Vessi

[@xyzkejelewo]

Fully expecting a atleast 2-3 hours house tour after everything is done. Having linus walking thru and talking thru everything would be absolute gold

[@MyPupTobi]

an at least*

[@sofuswurtz5951]

It will never be done. Linus will always be coming up with new ideas for content 😂

[@Kingcloudii]

hes already announced hes moving again soon lol

[@sofuswurtz5951]

@@Kingcloudii really !? Can you hint to where ?

[@Kingcloudii]

@@sofuswurtz5951 no he hasnt even announced it other than on a wan show, he just said hes keeping the old house for content and new one will be where they live, i doubt they will ever say where

[@mblulz]

Jake and Alex telling Linus what to do is always fantastic content

[@jonesgang]

But Jake and Alex are so full of themselves it does get a bit annoying, funny but still annoying.

[@Markos581973]

scripted

[@mp64901]

@@jonesgang bro what you waffling about, your probably not around people a lot if your thinking guys joking around is being full of themselves

[@jonesgang]

@@mp64901 I work in construction where you would be running home crying for your mommy and daddy after the first hour.

[@mp64901]

@@jonesgang buddy u aint a war hero and have fun with your cool 40k a year

[@pazfightsdirty1146]

I love how, when it comes to computers they are meticulous with how it turns out. But anything else is "we can run this cable through the woods!" Or "we can play plumber" it's fantastic.

[@m6isme]

3:30 Linus' face trying to swallow that news was perfect

[@4RT1LL3RY]

I would suggest getting a liquid to liquid heat exchanger rather than running it as a single loop. It will mean you can keep your PC loop nice and clean of any outside contaminants.

[@timderks5960]

Well, tbh, it's just a massive closed loop. There won't be any (new) contaminations. I still fully agree with you, since everything that's buried outside is gonna get hit and broken at some point in time, but a fine filter would probably be alright too.

[@effingandjeffing8270]

They also wouldn't have needed the pipe in the base they could have put the heat exchanger inline with the pool pump.

[@omgMBP]

No he’s absolutely right. You can use a very modest pump in the designed for the job on the pc side and simply exchange the heat to the larger loop. This is the correct way to do this.

[@-ragingpotato-937]

Thats what they mentioned in 23:55 Linus doesn't want it.

[@hendrikkruse5708]

Somebody remembers the whole room watercooling setup from the Beginning? That one had gunked up blocks everywhere. This will happen here aswell - i take every bet.

[@nolan879]

Why not use a heat exchanger to isolate the loops from each other? You could also use 3 way valves to turn off the connection to the pool and switch to another water source in the winter. It would also allow you to regulate the pressure on both sides of the loop; lower pressure in the PCs, and higher pressure in the pool loop.

[@CyberbrainPC]

This is exactly what I do. Works really well.

[@mattsnyder4754]

To be fair. At this point it’s pretty obvious that if they were capable of putting that degree of thought into this project, we wouldnt be this many videos deep and still using flex tape

[@federicoalcala9566]

@@mattsnyder4754 They're extremely capable of putting even more thought than that into any project. The problem is that they're like, what's the next video? Oh we need all those things to do it right? Well, how much of that can you scrape together in the next 45 minutes Alex?

[@leonmilner9994]

Why not use a plumber? :p

[@jttech44]

What you want is a water to air heat exchanger, which is what they do in some actual datacenters. Requires zero modification of server hardware (which is very important) as you're cooling the air itself, not the servers directly. Big reason being, you can't just cool a server's CPU, you have storage, VRM's, power supplies, and various other motherboard components and addin cards that require air cooling, none of which have water blocks. The added bonus is, with an water to air heat exchanger, you gain the benefit of cooling the entire room too, so, no HVAC needed really. Combine that with a very basic PIC and a DC inverter pump, and you have a system that only demands exactly as much cooling as your room requires, so it'll never go sub-ambient and create condensation issues. So, you know, as per usual, Linus had an idea that sounded cool in his head, but in reality isn't well thought out, and will lead to problems down he road (and more clickbaity videos of course). I do hope that he eventually realizes how irresponsible he's being bringing this sort of misinformed content to the masses. Source: SUN Microsystems Enterprise Data Center Design and Methodology (2002)

[@AusSkiller]

Definitely use a heat exchanger so you don't end up with a whole room water-cooling situation where EVERYTHING gets gunked up. With the heat exchanger you will be able to protect all the PC hardware.

[@MrJabucek]

17:18 "there's a rock in my water cooling loop" 24:00 "nope, I talked Alex out of a heat exchanger"

[@eisenklad]

dont forget the convenience of running low pressure on rack side and high pressure on pool side. it would make the rack manifold cheaper/consumer grade if it was running a sensible pressure instead of a big bertha pump. remember, this rack also host one of LTT offsite vault backups. it be shame if the manifold gives way and hoses the rack and flood his basement

[@Morberis]

​@@eisenkladHopefully they put a water leak detector down there for that exact reason

[@Papinak2]

Also, they could use an exchanger with multiple circuits, each system having separate circuit (maybe with a backup radiator?) so one failure won't send the whole rack offline.

[@farLander1]

@@Morberis There's no possible way there _isn't_ one down there already. It's in the basement, right? ANY subterranean room with moisture-sensitive stuff should have one

[@Addyfinance57]

00:05 that kick is awesome i will see in loops 😂😂😂 another meme on the line

[@AlasdairGR]

Can't wait for the inevitable follow up video where they realize that they really need to add the heat exchanger and Jake gets to say he said so. 😂 UPDATE: I have been vindicated.

[@eldaria]

Yea, when one of those loose rocks get jammed into a CPU block. ;-)

[@Gh3ttoboy]

Why not use both a filter and a heat exchanger

[@giantninja9173]

@@Gh3ttoboywell the idea is that the whole pool is the heat exchanger. There’s a lot of tubing running back and forth through the bottom of the pool. The sheer amount of water should keep the tubing cool even as it heats up because water will evaporate out of the pool and cool itself back down. They just didn’t plan for needing a filter because they didn’t think the water in the pipe would be so grungy and/or have actual rock(s) in it.

[@jttech44]

@@giantninja9173 not a heat exchanger in the pool, one in the room, to cool the room instead of the individual cpu's. It's how they do this in enterprise applications, ie 'the right way to do it'.

[@giantninja9173]

@@jttech44 I said the pool IS the heat exchanger. Literal textbook definition not what's being sold. And the right way to do it is overkill here and doesn't help heat the pool. It's only one rack. They couldn't even use the rack for the gaming room because anti cheat disallows VMs.

[@festro1000]

I love the expression Linus makes when learning the price, always comes off as the parents just learning what shenanigans the kids are up to.

[@paperc07]

just acting.... he probably made atleast 10k+ off this video he don't mind spending 1k to make 9

[@festro1000]

@@paperc07 Doesn't make it any less funny.

[@xXxNickWilsonxXx]

I'm so happy to see them back at the house, thought it would never happen again after the bed cooling fiasco

[@TobiasLeininger]

Only in the basement :D

[@michaelanderson654]

You might want a a dual water loop chiller. It takes heat from one loop and puts it into the other using a refrigeration compressor and keeps the water in both loops separated

[@dr_sax1479]

I love that both you and DIY Perks released videos on cooling a PC with water from a pool/pond at the same time

[@AlbertWeijers]

Linus should interview the DIY guy and compare notes... They also both made nice desk pc's.

[@unlawfulmoose]

both were on my reccomended at the same time lol

[@fader52]

Loved this video. As an HVAC it checks all my boxes. One thing to consider that you may not have thought of though is that in the winter the water coming from the pool will almost certainly be colder than the dewpoint of the server room(~10°C). Those pipes coming in from the outside will be sweating and will get water in the server rack if you run it like this in the winter. If you add a heat exchange put a drain pan under it to collect the water that condenses and insulate the pipes coming from the outside so they don't sweat as well. Make sure that the pump on the PC side of the heat exchanger has enough flow that the heat exchanger doesn't cool the water on the PC side below the dewpoint as well.

[@GorgotMM]

It shouldn't be that cool. Maybe below the dewpoint, but not -10C. The winters don't get super cold in this area and there will also be a ton of heat pumped into the fluid. I do agree however that in all cases, this needs a low point with a drain pan.

[@Sasbanonker]

@@GorgotMM The tilde* (~) doesn't mean negative. It means "about". He's saying the temperature will get "about"10 degrees C.

[@GorgotMM]

@@Sasbanonker Oh, I had read this as minus. Sorry.

[@randomdeliveryguy]

@@Sasbanonker Tilda is such a hot name, damn it got me acting up now.

[@Chyronn]

@@Sasbanonker It's tilde

[@KamillPlayZ]

13:56 the one piece is real

[@JacobKRP]

"Oh there is a rock in my loop!" Rock vibin its way straight into the pump..

[@ke_wegz]

Diy perks and Linus dropping the same idea in the same time is the best example of comedic timing

[@111smd]

Linus 1. do a heat exchanger -this will allow you to keep high pressure (pool) and low pressure (PC) systems separate -if done right you can flush the pool and pc sides only when needed 2. do a filter on the pool side only -this will keep garbage from damaging the pump -and filters can release particles into the cooling fluid thus clogging the fine fins of water blocks

[@nemtudom5074]

Not sure if you're aware but the cooling loop isnt actually using poolwater, the cooling loop has pipes in the walls of the pool

[@jackass123455]

@@nemtudom5074 yet the pool loop is still EXTREMELY filthy and janky it NEEDS to be separated from the delicate pc hardware

[@darrensim295]

@@nemtudom5074 did you miss the part of the video where there were rocks in the loop

[@nemtudom5074]

@@jackass123455 Its filthy because they left water in it for what i assume to be weeks

[@jackass123455]

@@nemtudom5074 and now that bio mass is there good luck properly getting it out and keeping it out the best solution here didn't even involve him putting a custom loop of pipe in his concrete (which could actually become heat soaked close to the pipe concrete isn't a great heat conductor) the beter solution is a pair of heat exchangers (one in his server room and one in the pools filtration system) using the water directly rather than trying to go through an ineffcient heat exchange medium to access his pool water. the benefit of this also given the screw up from his contractors is that his solar panel cooling loop can also be plumbed into the pool filtration after the pc cooling loop ensuring he doesnt get heat crossover there. now he has to go pool server solar pool and if as i said the concrete gets heat soaked well hes SOL

[@snazzy]

Wow, Linus and I have the exact same condensate pump for our evaporator coil. I truly am a lucky guy.

[@jaxokars]

uh ok.

[@beginswithaj]

@narkomancers5262 only if he wears socks in sandals too

[@nickmurphy8542]

Based

[@Flappyman]

such a troll hahahah

[@oddbutfair]

You mean to say blessed

[@jessery475]

The chemistry between Linus and Alex is priceless. And of course Jake. Lol.

[@julioquiroga.]

You merely adopted the jankiness, they were born in it. I appreciate Alex´s spirit with the Flex Tape cap.

[@soloman5967]

lmao when he said they werent “planning” on using it that was the most obvious foreshadowing 😂😂

[@SHQ09Xtreme]

i love how they do budget diy when they have the money to hire profesianals

[@romans6405]

​@@SHQ09Xtreme"budget" was still $900 😂

[@jaspermooren5883]

@@SHQ09Xtreme Hiring professionals isn't content, doing it DIY is.

[@heckintosh2994]

This video is painful to watch on so many levels, yet so rewarding and cool to watch.

[@WespectRamen]

You guys should really do the heat exchanger like Jake suggests. You would have to heavily treat such a huge loop for even a slim chance of not gunking up the micro fins on the water blocks. There is just too many points for potential contamination imo Edit: not to mention, youd also be trusting the integrity of the work from the pool contractors that you were fed up with

[@numberyellow]

i'll bet money the system ends up as bad off (contamination-wise) as that whole-house cooling loop he built years ago. I really had high hopes that he was gonna do this up right, but it looks like a repeat of the aforementioned large-scale water cooling system.

[@NavinF]

Sounds like he's using ethylene glycol antifreeze. As long as it's mixed per manufacturer's instructions (unlike in the "whole room watercooling" video where it was heavily diluted), it's impossible for this loop to gunk up. EG is a biocide at large concentrations but feeds microorganisms at low concentrations which is why the old video was a fail.

[@Gruthius]

I really think the heat exchanger is a good idea, in terms of maintenance it would be a lot easier to drain the loop if required, and would also require less pressure load on the components because you wont have to pump such a large body of water

[@WespectRamen]

@@numberyellow haha, i forgot about that video's catastrophic results. To be frank, he did say near the beginning of the video that the final setup wont be like this. Even if something goes wrong, itll just be more content lol

[@WespectRamen]

@@NavinF while what youre stating about antifreeze isnt wrong, it wasnt used here. They just pumped in water from the T (or something) in their water main, which is part of their hydronic house heating system. Besides that, how do you think they could accurately measure the volume of the fluid in the loop to mix to required spec? I dont have Floatplane so I cant speak on how long it actually took to purge the whole loop, but ill bet it took a long ass time. If youre thinking about using premixed antifreeze then, I dont think bulk premix suppliers exist.

[@williebrort]

24:55 please make more videos of this medium term planning you are doing here. I really like this project!

[@birbo5603]

Guys, we must appreciate linus’ dedication to the segues. For crying out loud, man was dripping wet and *still* managed it. Bravo 🎉

[@Sidorovich420]

I'm sure he's dripping wet everytime he segues

[@LinusTechTipsTemporary]

@@Sidorovich420 Truer words have never been spoken.

[@optionapoop]

@@Sidorovich420 whatcha mean by that....?

[@anderslarsen1321]

@@optionapoop Linus is doing it the segueway! Ok Ill show myself out the door…

[@khushkataria7226]

Yes his segues are so underrated. Just like our sponsor, raid shadow legends.

[@andrewjmarx]

I wonder how much of the heat/energy from the server is absorbed into the ground before it reaches the pool. It'd be pretty ironic if the tubes are deep enough that the pool is actually being cooled by the soil, rather than heated by the server.

[@AnderSixxin]

Usually I watch LTT and think wow these guys definitely know more about what they’re doing than I do…until today! Loved watching Linus and Alex navigate the plumbing on this one 😂😂

[@ShidoriDE]

Me: „Oh, my loop is a little dirty…“ Linus: „OH THERE IS A ROCK IN THE LOOP“

[@ivanfromtheeast4709]

You need a water to water intercooler that interfaces with the pool filtration system instead. That way you can use less energy via pumps and your water won’t get contaminated

[@wertywerrtyson5529]

Thanks. I’m clueless when it comes to plumbing but I figured there must be a better way of doing it by sinking it into some kind of intercooler and then cool that and it sounds a lot like what you mentioned.

[@0106johnny]

Yeah, the water in that loop will go bad within weeks

[@codydouglass]

I wonder if you could fill the water intercooler with some crushed up ice as well to get some extra performance on during gaming sessions. It's a stupid impractical idea but LTT loves those so it could make for a fun video.

[@Respectable_Username]

Shoutout to David on all these shoots as our audience stand in, enjoying the spectacle just as much as the rest of us 😂

[@RayneAngelus]

For the record, when you're putting PVC pipe fittings together, twist them like a screw during the cementing process. It helps to further "blend" the two pieces as they melt together, making for a stronger "weld". Also, *use primer*!

[@bobufo5729]

Don’t use primer imo if it’s clean…. Unless your doing giant pipes you don’t need it… the pipe glue has acetone in it

[@bobufo5729]

If your code requires primer and you want to go ahead. We could agree to disagree about the effectiveness of primer. I’ve seen lots of research that indicates a worse bond

[@bobufo5729]

I’m more of a blue guy than a grey guy for anything under 4 inch. They really shouldn’t use hardened glue either and definitely won’t wait a whole day for grey to dry

[@RayneAngelus]

Eh. The way I learned is: Primer on both pieces, glue on both pieces, push and twist together. Doesn't need much drying time unless you're using it for pressurized or flammable conditions, in which case you give it 24 hours to cure properly.

[@bobufo5729]

@@RayneAngelus grey needs a day to dry chief

[@TheREALBOJACK]

19:38 - "... and what we're going to try is another worm-drive clamp..." Congratulations! You're now a "Professional" Plumber! 🎉😂

[@Rebasepoiss]

You should insulate the pipes so you don't dump so much heat into your server room.

13:50 It honestly took me a moment to get that joke. That was hilarious.

[@timnixon2889]

During winter you should create a system that dumps the heat from the CPU/GPUs into your home heating system. Then automate it so when the home heat is 'on' it dumps there, but if the home A/C or some threshold is crossed it dumps the heat into the pool. Perhaps the suggestions that you need an actual heat exchanger would be the best implementation to create a simpler closed loop.

[@Hexen_Wulf]

Don't think he'll go for it. He started the video off by saying he didn't want to set up an automation system.

[@hugeb.c.4312]

Isn't a computer essentially already a system that dumps the heat from the GPU and CPU to heat a home?

[@ameunier41]

@@hugeb.c.4312 Everything IN the house that consume energy heat the house. Light, oven, computer, clock, screen, water heater, etc...

[@hugeb.c.4312]

@@ameunier41 yes, that's my point...

[@eatyourvegetables1449]

@@hugeb.c.4312 But with a pool, all the heat is leaving the home.

[@AulisA.O.T]

17:16 Rock: SOMEBODY HELP ME PLEAAAaa-!

[@hop-skip-ouch8798]

From running tubing throughout the old house to running tubing through your own pool for cooling. Quite a journey in 10 years.

[@ncot_tech]

Whole house water cooling was ten years ago? Now I do feel old.

[@FelixM86]

you should get a 2 stage loop. the pc cooling loop ending in a radiator close to the server. this radiator should then be submerged into a secondary loop that goes outside into the pool. that way you have a good barrier between the component cooling water and the long dirty loop water.

[@TheMonthlyJack]

That's what they called the heat exchanger at 23:58

[@666Tomato666]

yeah, he really needs a heat exchanger or he'll be buying new CPU/GPU blocks every few months

[@josh8106]

At the end of the video that’s what Jake is wanting them to do

[@RandomTechWZ]

A plate heat exchanger would work much better.

[@radozeman]

@@RandomTechWZ my thoughts exactly!

[@otakuotaku6774]

Linus next video : Finally, My PC got muscles

[@gon720]

Yeah the pc is going to make use of its muscles to cool itself.

[@CyanRooper]

Next video: My PC has replaced a member of my staff (hint: it's Colton)

[@aesop2733]

It would certainly be easier than Linus growing any

[@HowlingMoai]

I bet that one piece joke that Linus made in this video made you happy

[@The_Juggla]

*Mussels

[@rceprsn]

At 17:20, I could not stop laughing. All I could think about was the "Indiana Jones" Theme playing as that rock enters the system...

[@colinstu]

24:00 OMG, please, heat exchanger :( I need more Jake taking lead on these things lol.

[@DestructivelyPhased]

Alex is the definition of give an engineer an unlimited budget and an insane design brief and they will deliver insanity^2.

[@chaschuky999]

Gotta love the dedication to making everything in his house a tax write-off lmfao. “Yes Mr. Taxman sir, this pool in my own back yard is a business expense, see we made a whole video about it”

[@ALZlper]

Love that

[@shubhkapoor4057]

I just love watching alex jake and linus doing stuff like this together😂

[@87vortex87]

The number of ways these "bigger" project videos can fail makes these videos so much fun to watch.

[@Respectable_Username]

Eyy congrats on finally getting the pool done! I'm assuming you're now contractually obligated to host a pool party for all the LTT staff who've helped out at your house 😛

[@guspaz]

Those waterblocks are going to clog in a heartbeat no matter what sort of filter you use. I can’t believe there won’t be a heat exchanger used.

[@lunar120]

I haven't enjoyed a Linus video this much since he cleaned water cooling tubing in his bathtub. What a chad lad to fearlessly clean tubing in such a way.

[@TheTeuthras]

Glad to see the pool contractors got their act together. Quick turn around from the call out on the WAN show 😅

[@kayburcky7146]

They fecked up bad tho with the lines...

[@mayur619]

Just in time too or his home insurance might have been terminated by pics from space or fixed wing aircraft.

[@Steamrick]

@@kayburcky7146 The lines actually might have been a different contractor. Or not. We don't know.

[@andymarshall4014]

It’s proper Alex wearing a flex seal hat for this episode 😂😂

[@Silverhazey_]

Linus & Alex together is basically summed up with the thing they said in this video, and pretty much all of their videos together. “This isn’t the best way to do this at all, it might turn out badly” In unison “Let’s do it”. Gotta love the chemistry between these two. It’s always an amazing watch when this duo teams up for some mayhem.

[@KainniaK]

It's still far better to fail at the ideal then to succeed as the moderate or as we say in Canada "it's farm good!"

[@slizgi86]

Alex is a master of junkiest yet working deployment, ideal R&D guy 👍

[@bbrrraaapp]

"Have you seen the ads, plunk and it works"

[@ParisLuHv]

its been a week and im still chuckling at "Biological ladder" + "Step Laddy".

[@rikossina3222]

Advice N.1 : You can add some chlorine to the water in the loop so doesn't get yellow and smell. chlorine is in tap water in a small amount to kill bacteria. Advice N.2: Add T valves in a couple of places so you can open them and the air from the bubbles is concentrating there and escaping, preferably in the higher level of tubing, an you can have also embedded sensors to monitor the pressure for example so you know if the pump is working or you have a leak.

[@rikossina3222]

@@Xirtamani In every country the tap water contains small amount of chlorine. It is like one teaspoon in a gallon. I don't advise throwing chlorine without taking advice from an expert, just giving an option. Also pool water has a higher amount of chlorine than tap water . So you could have some amount if helps with the crowing of bacteria or mold on the tubes .

[@Kyrazlan]

@@rikossina3222 1 teaspoon in a gallon sounds like a huge amount tbh...

[@libtrs838]

​@@Xirtamani Where are you that they don't use chlorine? I have never heard of such a thing. I was under the impression every public water utility used chlorine or chloramine.

[@rikossina3222]

@@Kyrazlan as I know is one bottle cap to a buck as I know . But either way is for a close loop so is not for consumption. So you could have more but in an amount that if you have a leak that couldn't cause any health problems.

[@thegamermaster6461]

@@rikossina3222 not in Germany or the most other european countries

[@magecu]

As some pointed out, a good idea would be to separate the loops and use heath a single or multiple exchangers an filter on the outside loop. Also this would help with limiting pressure on the computer side. With a proper heath exchanger you could easily run the outside loop at high pressure and the computer loop at a lower pressure. This would help to prevent any failures of the heat blocks, because they wouldn't be run outside of specs. Also you could easily over spec with a heat exchanger for low temp heating system and shouldn't act as a cooling bottleneck.

[@--_DJ_--]

You should proof read your comments.

[@magecu]

@@--_DJ_-- You are absolutely right. But I don't care enough about this topic to be bothered. Could have just avoided posting. :)

[@--_DJ_--]

@@magecu No harm either way, I just can't help myself.

[@NickCharles]

I can't believe you finally have a pool. I was starting to think you just really wanted a massive hole in your backyard.

[@itachisharingan9]

Was just thinking about this a few weeks ago. Great video, really appreciated the math on the heat transfer as well

[@Seelingfahne]

Hopefully Linus learns the magic of water-water heat exchangers someday. Jake’s reaction was priceless 😂 Seasonally changing your waterblock cuz its full of leaves and minerals is cool too though

[@0106johnny]

It's a closed loop, so leaves and rocks shouldn't be a problem, but algae will be bad

[@walkinmn]

@@Xirtamani yeah that's true, but the water will be nasty in no time anyway... not from the pool but from all the things growing in it

[@HoodieHan]

As a new construction plumber I’m quite impressed by this. Well done Linus.

[@JuisSekasi]

XD sure

[@chronchris1486]

I'm especially impressed by the fact they did all this in a room with a bunch of tech running and without turning off the power.

[@smashyrashy]

New is the key word here

[@hashimina_]

I dunno about the seasoned plumber's perspective

[@NonsensicalSpudz]

and I'm assuming the blowing into the pipe is just common practice lol

[@Gastell0]

You really should use a heat exchanger right at the room entrance to separate the loops, high pressure on pool side, and reasonable pressure on room side, also quick disconnects probably would help

[@hookenz]

You could replace all that soft clear hose line with Alkathene pipe otherwise known as MDPE pipe. It's flexible but will last. We use it on farms to run water to wherever we need it and it holds up under mains pressure.

[@luke18495]

Two of the best (in my opinion) tech channels (LTT and DIY Perks) releasing a video in the same hour of each other with water cooling a computer using a pond/pool 😂 And please can you two collab!

[@jacobhansen4388]

They can't, DIY perks is more put together in his projects... At least while presenting them that is

[@bornach]

​@@jacobhansen4388They're gonna swap positions and appear on each others channels as an April Fools prank

[@OceanBagel]

I think it's funny how Linus said he was obviously not literally submerging a PC in a pool when that's exactly what DIY Perks just did

[@Dev_2R]

@@jacobhansen4388 Linus has done collabs with un-like-minded personas before and it's gone perfectly well. I can't tell if you're throwing shade or not, but I think them collaborating on a really quality build would be very cool, like Linus and his team did with with the aluminum machine shop and their $100k PC build.

[@ReikoFrostwolf]

I hope you have a plan to prevent the loop from freezing over in the winter, and a backup to cool the servers out of pool season. (Like a way to drain the loop so water expansion doesn't burst the pipes)

[@TuesdayGrace]

Wtf you dump the heat inside in the winter. Free heating.

[@ipanesm]

The pool won't freeze, and the server runs 24/7 so it shouldn't freeze

[@K31TH3R]

From my understanding, the lines run beneath the pool and are separate from the pool water. This means you can run antifreeze in the loop, so even if the pool did manage to freeze, it wouldn't matter, you'd just have some 0C glycol in the loop. However, condensation would be a problem if the server room is much warmer than the coolant. Linus doesn't want a complicated system, however, I think it could still be kept pretty simple if the loop had a thermostat and a valve on a microswitch which routes coolant to either the pool loop or an indoor heat exchanger depending on the ambient temperature of the sever room.

[@zetsubou3704]

@@ipanesm Pretty sure the cold temperatures can overpower the heat produced by the server.

[@ALPHABYTE1994]

when something looks stupid, but works - then it is not stupid

[@CanIHasThisName]

Looking forward to the final setup, this is a great concept. I think it deserves a fully proper deployment with the heat exchanger and done in such way that it's something people would want to have at home. Might be cool to actually do it more like a tutorial, summing up everything you need to get and what to watch out for. You should also have some kind of a backup plan in case you can't use the pool loop so that you don't need to shut down everything. It would also be very cool if you had a way to switch between using the pool for cooling, and dumping the heat of the rack into the rest of the house. Given that you'd theoretically only do such switch twice a year, the solution wouldn't necessarily need to be elegant or automated, just functional and reliable.

[@symbianx]

Alex's Flex Seal hat during the video is the cherry on top of the cake! 😂

[@Xeph0r]

Finally, a sequel to the whole room water cooling series.

[@gameboizchannel]

"I've dreamed of water cooling my gaming PC with my pool" is a sentenced I never expected to hear in my life. But I'm glad if anybody said it, it was Linus.

[@peaxoop]

or diyperks....

[@benjaminmartinez9569]

I'm sure you have already thought of this, but I would recommend at least one purge valve on each the "inlet" and the "outlet" or hot and cold side... how ever you want to call them. And I would be interested to know what PSI the loop is under. Good work boys!

[@RelkinsDCskater]

Pool party video when its done