I leveled up my house water cooling!

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Using the pool to cool Linus' computers is working great... for the computers. For the humans though it is too dang hot.
Discuss on the forum: linustechtips.com/topic/15382...
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MUSIC CREDIT
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Intro: Laszlo - Supernova
Video Link: • [Electro] - Laszlo - S...
iTunes Download Link: itunes.apple.com/us/album/sup...
Artist Link: / laszlomusic
Outro: Approaching Nirvana - Sugar High
Video Link: • Sugar High - Approachi...
Listen on Spotify: spoti.fi/UxWkUw
Artist Link: / approachingnirvana
Intro animation by MBarek Abdelwassaa / mbarek_abdel
Monitor And Keyboard by vadimmihalkevich / CC BY 4.0 geni.us/PgGWp
Mechanical RGB Keyboard by BigBrotherECE / CC BY 4.0 geni.us/mj6pHk4
Mouse Gamer free Model By Oscar Creativo / CC BY 4.0 geni.us/Ps3XfE
CHAPTERS
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0:00 - Intro
1:16 - Odoo!
1:27 - Thermal Camera Investigation
3:26 - The Plan
6:05 - Is it heating the pool?
6:54 - PT Cruiser rad mounting
11:49 - The RGB is glorious, final plumbing
14:01 - Turning it on
15:55 - Power adapter cooling
17:18 - Did it work?
19:29 - Odoo!
20:19 - Outro

[@kingRJ-]

The house upgrades are my favorite series right now.

[@prostegomat]

Mine too

[@Nathan123Bhi8]

That and 5000$ tech upgrades

[@dementious]

Linus literally has the most futuristic smart house on the face of the planet (that I know of). I wonder if anyone is doing what he is doing on a professional level for commercial residences? It's probably a pretty lucrative market depending on your location.

[@vivarock12]

Si

[@Tophatguy_vr]

Same

[@AntVenom]

Please be careful with that SATA to Molex cable powering all of the fans. Alex may laugh about being over the rated limit of that cable, but I powered my basement water cooling setup on a long molex cable from my PC upstairs down to my radiator downstairs for 8 years, and after all that time, the molex connection into the PC burnt out. I'm lucky that I caught it before it actually began melting. I calculated it after the fact, and while I was pushing more amps through the cable than it was rated to, my margin was less than the margin you're allowing for here. So seriously, be careful. (I'm only 12:25 in atm so idk if they change it later)

[@marsovac]

how long was your cable, since that matters a lot? if it was a few meters then you were in negative margin in reality and needed a parallel line for each wire. This is not AC current, but DC. DC heats wires quite substantially with a cascading effect on temp increase. We would have such problems all around our house installations if had Edison won against Tesla.

[@appik6981]

Woah, hey AntVenom! Replying to signal boost the message, I've never heard a story that started with “Molex to Sata” end well!

[@silasmayes7954]

They did not change it. I figured the safety margin was bigger than that, but if you've seen it melt it is probably best to use a different solution. Imo the box fan was a good solution if mounted correctly.

[@AntVenom]

@@marsovac 7 feet, but the calculation I did accounted for that. Had I been ~3 feet or less, I wouldn't have been over the limit. If Alex is ALREADY calculating it to be over the limit, then I'd be worried.

[@Artofficial1986]

Shh let him cook

[@niiklaswag]

I lost track of all the techniques and loops in this project but I still enjoy watching Linus, Alex and Jake DIY'ing experimental stuff nobody else would ever do

[@xGaLoSx]

Their best videos by far.

[@heeryanus]

Since you have separated loops anyways, it would definitely be much more beneficial to use a phase-change loop for the cooling of the room.. since your 'cold' temp inside the room is ~30 degrees anyways, you could never get it below 30-31 as you have now.

[@tbrowniscool]

Your assuming LTT want's results and not just content lol

[@arnoldwilliamson3543]

@@tbrowniscool results are content

[@TotalDbag24]

At that point you'd be better off getting a mini split HVAC unit.

[@BVN-TEXAS]

@@TotalDbag24not really. He can get a water to water chiller and it would chill his loop for both the rack and radiators. It also would work much more efficiently than a mini split because it’s in effect a geothermal heat exchanger.

[@TotalDbag24]

@@BVN-TEXAS No, what he has right now is effectively a geothermal heat exchanger. Using ground temp to cool water. Those 2 car radiators and computer fans aren't going to efficiently cool the room, then there's the downsides of putting sub ambient water through your loop. Not to mention a chiller kind of defeats the whole purpose of having the ground loop.

[@backacheache]

I wonder if they could write a batch file that turns the individual pc temperatures into RGB values for each fan, this would mean at a glance you could see if one was running hot

[@thomasr1051]

Cool idea

[@granatmof]

It's always possible but is it always worth the time and development of your engineers. I mean I can image such a project taking a full week or two to complete unless they find something that already has the controls.

[@Eugen1344]

From my 5 minutes of Googling, it seems that "iCue RGB" has that feature

[@Chad_at_Big_CAT_Networking]

With that many fans they could nearly make them a low pixel display and have it read out a number vertically

[@trevorssillyplace]

Not really sure why they wouldn't just use the oem radiator fan and shroud that came on the pt cruiser radiator. I guess that would be way too easy. And it's dc so I'm sure they could of also used whatever signal ther using for switching.

[@thethingthatshouldnotbe3035]

About the heating of the pool: At the Technical University in Darmstadt, Germany, there is a super computer that they use to heat a campus. The catch is, they ran into the exact same problem as you! So what they‘re doing is heating up the water that goes into the cooling loop to ~40C via solar energy (dont quote me on that, but somewhere in that ballpark), because only then is it warm enough to heat several buildings, after the super computer also dumps its heat in it. The neat thing is, overall it‘s still a lot cheaper than normal heating and air cooling! I know this probably doesnt really help you (or maybe it will? Idk), but I figured you‘d find it to be interesting at least.

[@shellderp]

they've talked about this on wan show ages ago. It's cool

[@tobiwonkanogy2975]

surface area is the name of the game . only way to improve heat transfer now is have more heat exchangers. this could work really well in Canadian winter. cant wait to see.

[@not_glad]

I might be confused but that sound like the opposite problem?

[@thescandalchannel]

it would be possible if they use the backflow from the floorheating, this should be cool enoug to transfer a bit of heat to it, and let it afterwards go to the heating thingy and then again in the floor.

[@D3nn1s]

Well since theyre trying to heat the campus it makes sense they had to deploy additional heating sources so the students wouldnt be cold. Since this is going to an outdoor pool that probably has additional heating anyways it doesnt really matter. Even if 99% end up in the ground it wouldnt really matter in this instance, its just a slightly higher energy bill if they care about the pool temps at all.

[@linnoff]

At a previous job our "server room" (really just a bunch of towers each with their own job) was cooled with a crappy old mini-split. One of my routine tasks was to go in there every 2-3 days to empty the bucket we had underneath it to collect the condensation drips.

[@jamesphillips2285]

Good point. I thought of that; but forgot by the end of the video.

[@darkwaxer]

I love these house videos. I’m decades behind understanding this all but when I can buy my own house I’d love to tinker and build cool crap like this.

[@HajheerForoutan]

I think if the hot lines/tank in the room are insulated thermally, you would see a massive difference both in the room temp and the system temps, right now you're dumping a massive amount of the heat generated in the rack back into the room without giving it the shot of really being dumped to the second loop going out

[@sdfsdf2205]

It's becoming a throwback to the all room watering cooling. The room was still uncomfortably warm in the end of the day.

[@HajheerForoutan]

​​@@sdfsdf2205ya I was definitely surprised to see them run all those pipes without insulation, specially given they moved to the heat exchanger leaving the primary hot loop in the room, I mean what did you expect? All that heat from the hot water sitting there not to get dumped back in the room? All the money spent on this and you don't even do it right. If the hot loop + tank is insulated I bet you the temp difference between the cold loop and hot loop will double and the exchanger will be able to dump way more heat into the cold loop, honestly though the most proper way to do this is to insulate the cold loop as well. Not to mention if they want to heat the pool up they should have insulated the pipe underground between the pool and the room, otherwise all that heat gets dumped to the ground before it even reaches the pool

[@willcal2738]

hes been doing this ever since he used BARE COPPER! and the flir showed it glowing like a beacon! i wish he'd notice this and paint them if theyre ugly but USE INSULATION on BOTH hot AND cold sides, EVERYWHERE!

[@Coleisabagel]

Yeah I wonder what sort of percentage of heat is being dumped throughout the line (in the room in particular) versus out in the pool because of this. The fact that they did it in thermally conductive tubing inside of the room just sort of doubly emphasizes this. Scores of engineers on the team and nobody has thought about the sheer size of the passive heatsink of the thermally conductive lines this entire time is wild to me.

[@SlyNine]

They should have just used a heatpump in the room to handle ALL of the heat. They could dump the heat where ever they wanted. They would be pushing far less fluid, which could use less energy. Would be far less convoluted. Wouldn't have to worry as much about temp deltas.

[@scottjarriel6761]

I mentioned this in one of the earlier videos about this. You could change your house hotwater heater to a heat-pump style hot water heater. It uses a heat pump to transfer heat from the ambient air (that you have plenty of) to the hot water tank. These systems use only a small amount of electricity to transfer the heat, and are some of the most efficient water heaters that are currently available. You might want to try to calculate the thermal energy that is being dumped into the room, and see how much of it you can pull out.

[@uzetaab]

Not a bad idea, this would also cool the room a bit more.

[@rninness]

Yes and the “exhaust” from these hot water heaters is basically AC cooled air.

[@matzke1129]

Yeah, this is 100% the correct move. Though, if they want to keep the room temp stable, they'd have to dump at least some of the extra heat output to the pool or something, which would sap at least some of the efficiency gains

[@willcal2738]

WOW! you could heat water really easily with a server's waste heat!

[@quadruple_negative]

That's a good point. Having a 300L, albeit insulated tank of 60-70 deg water in a room = HOT. If he were to relocate the water heater outside, I think that he would see a significant drop in temps inside the room. Not being Canadian, I have no idea if there is some sort of climatic reason why the heaters have been installed inside.

[@DrToonhattan]

Linus, I'd love it if you could publish a schematic or something of your whole setup here. Not just the cooling, but all the computers as well. That'd be really cool to see.

[@asymsolutions]

Maybe, but his setup has some bad choices, they (from how they explained it) tried an air-to-water cooler instead of the opposite. Trying to cool air via conductivity of metal is horribly in-effiecent. Such components should have been on a water loop, or in individual containers full of non conductive fliud (like the mineral oil tests), and then those containers on a cooling pump that has a radiator sitting in the pool water. Solution should either have the pool water being pumped through the radiator, or it placed in the lowest (and coolest spot farthest away from human contact). The alternative would to do the reverse, in which components are in their own mineral oil containers, and the pool water is ran through radiators sitting in them. This would reduce the risk of a total system failure due to leaks, but might have the risks of more failures overall. Also since we have the radiators being built per module, there could be greater expansion since you aren't having to redo the entire pool pump system, and radiator, just tapping/adding lines and maybe upgrading the water pump itself. TL;DR, Air cooling is inefficient, and should be removed from the cycle as far as possible, the entire system should have zero air gaps going into that giant reservoir/ heat exchanger that is the pool.

[@rosssharp5705]

The systems are on a water loop, the air to water is purely for the gear which cannot be easily water cooled and general room temp, the main loop is on a heat exchanger from the pool loop to the PC loop as well @@asymsolutions

[@XeroCreator]

+1 for the come together reference xD I really enjoy that we have a realistic example of all this tech (admittedly still jank) stuff. Absolutely awesome!

[@kwizzeh]

This is genuinely what I want more out of LTT. Jank cooling solutions no matter what the scale.

[@Finger112]

Next Linux needs a Waterfall for Hydropower to run his house.

[@nexonsu]

It's not just jank, it's firehazard.

[@halomika4973]

2023: Watercooling my house! 2123: Watercooling earth! 2223: Watercooling the solar system! 2323: Watercooling a star!

[@sativagirl1885]

No one expects Red Shirt Linus to arrive in a Geek Squad Bong filled with BC Bud, not Bud Light

[@picabolo93]

Some hard-earned experience: the transparent garden hoses are going to become brittle eventually. We had two separate incidents in my workplace were old hoses exploded and flooded the lab. And the water was nasty because the hoses allowed light in, enabling algae growth. We are now EPDM converts.

[@--_DJ_--]

How old were those hoses?? That stuff lasts a really long time when you use it for what it is designed for.

[@daaajester1]

algae sorta needs sunlight to thrive, pretty sure he doesn't have any in his basement room

[@Wimmle]

He dumped a heap of iodine in the water last vid everything is dead jim

[@picabolo93]

The hoses could not be that old, they were there before I arrived but one of the setups was recently assembled so maybe 3 years, the other maybe 5. Could be old stock, of course. Still, better than a leak or a burst, it's not the end of the world to change a few tubes. Good point on the iodine and the lack of light (although not so much natural light reaches our lab and still there were algae). We also put a HX to limit the amount of water in case of a leak, which he already has, so there's that.

[@maomekat7969]

there setup is so overpriced inefficient and ugly noisy warm looking ..they know it too theyre not dumb .it makes content so worth and fun to watch

[@supertrucker5525]

100% love anything to do with the house upgrades and such. Keep it coming.

[@Krendro]

I would love those magnetic cable arches for electrical work. Will definitely get some!

[@Slavolko]

For the water filter at 11:04, I'd suggest replacing the housing with a clear one to visually see when it's time to replace the filter, or to place pressure gauges before and after the filter in the loop for the same reason. You'll know it's time to replace the filter when you see a big enough drop in pressure after the filter.

[@MikkoRantalainen]

+1 for the pressure drop. That's more important than the visual appearance of the filter.

[@Slavolko]

@@MikkoRantalainen That's true. I suggested the clear housing because it was enough for our house. Our well pump kicked up a lot of sediment that would clog up the filter, and by the time it was noticeably caked up, we would notice a drastic loss in water pressure. Mainly though, we just didn't want to re-do the copper tubing to install pressure gauges before and after the filter, so the clear housing was better than nothing. Linus' pool and watercooling is a different situation from mine though, so I agree that it'd probably be better to be more proactive with the pressure gauges than the clear housing. His equipment is more sensitive than standard house plumbing.

[@TotalDbag24]

@@Slavolko It's not that necessary in his case. The only sediment his loop will pick up is the debris that got in the pipe when they put it together. All he really had to do was flush the pipe for a few hours and there'd be no sediment. But with this filter all he has to do is change it in a day or two and should be gtg.

[@Slavolko]

@@TotalDbag24 Won't there be gunk from the pool too?

[@TotalDbag24]

@@Slavolko No, he's not getting water from the pool. It's just a pipe that runs under the pool

[@turbochardged]

@12:28 I recommend installing drain valves for servicing the loop. Could also build an arduino with multiple temp sensors , flood warning, tank water level, remote shutdown, loop temps, and all accesable via webpage.

[@Serpher1]

I hope they see this comment. Great suggestions.

[@5V500mA]

I would collect all the data for alerts and monitoring performance comparison over months (summer/winter etc)

[@sdrgaming665]

A good strainer would be good for the water loop

[@ThorDyrden]

reminds me so of the setup in our first office 😁 We just had a server, a NAS and a network-switch in a small 19" rack, which we located into a small - maybe 3m² storage room next to the meeting-room. The sliding-door of the storage had to remain open in order for the window-less "server-room" not to overheat. Of course during meetings some people closed the door - though the server was usually not very loud you could hear it... and of course people forgot to open the door again at the end of the meeting... which ment latest over a weekend the storage-room became so warm, that the equipment started to shut-down 🤣 One of my bosses had decided for this setup and really insisted keeping it alive until finally the 32bit-server became unusable after maybe 6 years, as newer Windows required 64bit and I finally was allowed to rent the few services this box provided from an external hoster. Just NAS and network where fine in the small room - even with closed door ever after.

[@trevalyon8610]

Two "Cooling with Linus and Alex" videos in one week?!? Man, I love it when Christmas comes early ^_^

[@m.waleed.h]

Be sure to add some fixed temprture sensors and connect them to home assistant along with some pressure and leak detectors so that just in case something goes wrong, you can fix it before something really really costly happens. Imagine the pump dying or losing power and then systems frying themselves.

[@lester44444]

At this point, they just seem giddy for catastrophic failures cos content 😂😭

[@maomekat7969]

@@lester44444 this...there setup is so overpriced inefficient and ugly noisy warm looking ..they know it too theyre not dumb .it makes content so worth and fun to watch

[@lester44444]

@@maomekat7969 yeah its honestly so convoluted, and difficult to upgrade without completely taking it apart with a crew of people each time. There's SO many moving parts and points of failure. Also, we go on and on about how amazing Alex is... and he is really knowledgable, as a jack of all trades, but so many corners are cut each build (and so many fuck ups patched with electric tape and equivalent "just-good-enough-for-the-lols" solutions) that they just add up to what I can only assume are deliberate mistakes hoping for failure for future content 😂 Like....we KNOW that in a few years, this will just be taken apart because it was impractical, or it's been outspec-ed by more efficient machines, or it's flooded the house and they need to move again. It'll probably be offscreened and never thought about again. Who needs a server room in their house 😂😂

[@JonathanHarvell]

Aw man.. out at IBM in North Carolina, they just decommissioned 8 of those door radiators. We're about to decom a few more, so PM if you want, they might be willing to sell/donate one.

[@philipcooksey3422]

Comment for LTT to notice

[@Zynith3089]

Can we please get a whole home update on everything you’ve done since the beginning?

[@phyde1885]

THAT would be ENORMOUS TASK! I have seen,I believe ALL his content on his house,I try to any way,and producing a Start to Present Day ALL RE-Works included Production of His Entire Property to Date would be a Monumental & Enormously Lengthy Video ! Indeed,it it might be called for some day, as a short revision,as some anniversary date maybe some time in the future?😎

[@TekamsTheOne]

A genius move would be to use a heat pump, such as the sketchy aliexpress one to cool down the radiator and watercooling circuits and dump that heat into the pool. The heat pump could be added after the titanium heat exchanger.

[@jfolz]

You really do want the radiators hooked to the back of the rack, where they soak up the heat before it gets blown into the room. Waiting for version 37 where that finally happens 🙃 It's still pretty novel to have water cooling in data centers, so I expect as more companies start offering solutions, you'll eventually find one that will sell just 1 to a guy (with tens of millions on subscribers)

[@NoBodzSvK]

or on front side which will be cooling rack equipment so lower outside and can be run without fans because of intake of rack equipment

[@granatmof]

I'm curious if they go for a few more of those radiators in the room or some data center supplier contacting Linus for a cross marketing option.

[@jfolz]

@@NoBodzSvK AFAIK in a real data center you'd run chilled water through the radiators to get the air back to the desired ambient temp. You still want fans in the components, else the effectiveness of your cooling entirely depends on how restrictive they are.

[@Montisaquadeis]

@@granatmof I really don't expect a "enterprise" grade supplier to contact LMG honestly at least not for a video idea this to sell to the masses sicne they themselves aren't selling to the masses.

[@Kiritomens]

I mean there is really no reason to use water cooling in data centers. Since the whole building is built to be optimal for cooling right. I mean i don't know if datacenters can keep there crazy uptime certifications if you use watercooling, so i don't see this happening without some huge new reliable scalable tech lol.

[@p7d364]

It's always funny to see Linus integrate stuff in PC building into actual living situations - though it opens some unique and interesting solutions which you would see nowhere else...

[@sativagirl1885]

It's 4;20am and the Linux Penguin on your tellie is about to explode. On Monty Python, they seque by saying #AndNowForSomethingCompletelyDifferent

[@jonathanbuzzard1376]

This is because they are reinventing the wheel, in what is a solved problem in the data centre space for well over a decade now. Our water cooled rear doors are 12 years old now and they where not a new thing when we got them. Even water cooled in server on die was a solved problem but frankly under 50kW per rack you are wasting your money over water cooled rear doors.

[@AltonV]

@@jonathanbuzzard1376 he said the suppliers for thoose door arent that interested to sell just one door to a single customer

[@guitarguy764]

With an old PSU and an ESP32 you could both control power and control those rad fans speed to make it extra automated

[@ABestEver]

[@justotalkalottashit8392]

"Old psu" lol it amazes me that linus is still cheap enough to attempt to build a system vs buy a turnkey one

[@geogmz8277]

12:40 that in my opinion was a mistake, you might want to extend those hoses again and keep a little drip loop there... If you ever! Develop a leak from the ceiling the water will go straight to the rack.

[@DouglasHeyen]

I got to thinking about what happens if one springs a leak and it dumps the whole pool in that room. Maybe some type of smart water monitoring needs to be applied.

[@austin3171]

@@DouglasHeyen The water in the pool isn't going through the loop. The "outside" loop is embedded in the concrete pool walls. Its still a fuckton of water, but not a whole pool's worth.

[@--_DJ_--]

@@austin3171 Correct, the pool would be a metric fuckton, a mere fuckton isn't all that much to worry about.

[@Hopgop1]

Plus with the old system the hot air from the rack is also absorbed by the tubes, now they're tucked out of the way they won't absorb as much. Probably negligible, but worth mentioning.

[@watercannonscollaboration2281]

This series really makes me appreciate the engineering that goes towards cooling massive data centers

[@tbrowniscool]

And anyone that has a clue what they are doing! 😂😂Linus is going to burn his house down.

[@chuxmix65]

My small suggestion? Either increase the distance between the manifolds in the rack or heat shield them from each other. That bundle of hot and cold tubes bugs me. Good luck! Loving the development of this crazy system!

[@wallacengineering8096]

I really want to do something like this one day but much simpler. I will simply take a bunch of Air-Cooled PCs, place them in a a room, and exchange the heat from that room with cool air using a water loop. Pretty much just the twin PT Cruiser Radiators part but with a more direct cold air intake to the systems and a heat exchanger directly behind the systems.

[@Felix-st2ue]

Some ideas. 1. Install a hot water heatpump. This will absorb hot air from the room and make it usable by producing hot water for showering. 2. For the winter get a second heat exchanger to dump the energy in the heating loop. Given that you have under floor heating, the water shouldnt be any hotter than 40°C anyways.

[@matthewmaca6675]

There are products that exist for that in the wood fired heating space

[@vBrolin]

This would be so much easier, cheaper and less complicated.

[@ismaelyu5]

the easiest would be a Hot water tank with integrated heat pump

[@Felix-st2ue]

@@ismaelyu5 That's the one I meant.

[@ngregoirenc]

@@vBrolinyes. But it wouldnt be as entertaining

[@auke1031]

I'm into Home Assistant with my home mechanical controls... ESPHome flashed gadgets are gathering temperature data, turning Sonoff switches on and off, wifi power bar(GEENI) flashed with OpenBeken ) and other stuff. I'd LOVE to see Linus create a measurement/control system for monitoring the water thermal systems of his house that can inspire us to take control of our homes!

[@sorek__]

I work with ESP32 all the time. I still can't understand why Linus with his crazy home isn't using everything open source on some ESP-HOME. I would love to work on something like his house as a project for full integration (meaning all light switches and others). Thos MCUs are dirty cheap and with proper server at home and wifi he can run everything off them to make them smart and control basically anything he wants. Its not even too hard to do.

[@slowmo99]

I'd love to see if there's any big changes to the systems' performance with weather changes.

[@Jessev741]

There won't be, it's underground

[@jonyjo3622]

Maybe temperature but not really performance

[@SUPERMAR10312]

10:37 Nooo! You already flooded the house don't burn it down too!!

[@eggyparrot3844]

I feel like a diagram would be helpful to show where all the flows are. It's kinda hard to follow, just hearing each component explained one at a time. Still a really cool (hehe) project

[@HarryTaints]

If you follow what he said its not flowing right. Im guessing he just misspoke.

[@uberfuzzy]

There was a (literal) flow chart in PonyCAD last video, but thats now possibly out of date

[@collinwiedel]

I’d be interested after all of this is done, to see if your operating cost is cheaper than it would be just to do a dedicated mini split AC unit for that room

[@YourFavouriteComment]

Lifecycle cost would be a better comparison too. All the hardware, nevermind pool plumbing it took to even set this up

[@TigerWon]

I imagine it would never break even in 100 years. To run the big water pumps and the cost of install has gotta be crazy high compared to other methods.

[@cdburner5911]

It would really depend on the cost of electricity. You are looking at a COP of ~3 on average over the year. So, on average, lets say 650-700w to cool 2000w. Doubt that pump is more than 200w, but of course, an AC can cycle as needed for cooling, that pump needs to run any time ANY system is on, even just idle. But the cost of the plumbing, rads, fans, waterblocks, pump is probably ~$3k, an AC is more in the range of $5k, plus install, for a good one. The AC would also dehumidify. Honestly, for a normal person, AC makes way more sense probably. Some thriftyness you could save money on the AC, and could totally install a simple basement system on your own. But then again, you wouldn't watch a 27 part series about "Linus installs an AC and it goes well and works fine".

[@morstyrannis1951]

@@cdburner5911 all that plus there’s no RGB on an air conditioner.

[@mattsnyder4754]

I mean. He’s literally running 640 watts of fans on those car rads. That’s more than some mini splits right there on its own.

[@TheCommunistRabbit]

Im loving these new vlogging style camera angles.

[@keithgoh123]

This has come a loooong way. From the bath tub copper pipe cooling from the LTT garage bedroom days.

[@kvcsoliver]

Nice to see things working in practice. I would try to insulate every hot tube and the reservoir, that should make a significant difference, at least in my head.

[@zncon]

Exactly! This was driving me nuts watching the video. Of course room heat is going to be an issue when you've got a vat of ~40c water, and piles of tubing moving it around. 100 feet of uninsulated 1/2" PEX will lose something in the range of 400 watts. A thin layer of insulation could drop that by more then half. These numbers are also calculated for dead air, but with fans in the room moving air around, it's likely even higher.

[@pseudonymity0000]

For manifolds I believe you can get special restrictor fittings of varying restriction. This prevents the issue where you have more water flowing through 1 outlet and gradually less through the others as the water makes its way through the manifold, Giving even flow through all the ports.

[@jako1234567890jako]

You can get manifolds with valves on that would sort this issue, you can just turn the valve a few degrees and it'll restrict the flow slightly. It would only take a little trial and error to find a balance

[@PlumberGuy-ez9wx]

lol you got so upsold on that radiant heating system. The diamond plate lol. Very nice. Only ever had the opportunity once to do a job like that where cost wasn't a issue.

[@j_cheko]

Dont know if anyone else had this issue but im seeing the previous water loop update subs in this video (the one where it broke Linus' pc but not Yvonne's). Also, as always awesome video!

[@brendonbeebe]

The first series I watched was Whole Room Water Cooling, I love that it's gone full circle! Way less jank this time around.

[@eljeffe392]

Curious to see the cooling difference once peak winter hits.

[@--_DJ_--]

They only get "winter" compared to most of Canada. I'm not jealous or anything...

[@abyssalreclass]

You should add some sort of phase change cooling between the two loops so that you make better use of the cooling capacity of your pool.

[@goingrandom3558]

Alex is my favourite host by far. Every video with him is pure chaos and janky solutions. He is the impersonation of "if it works, it ain't stupid". Also he is honest if a product is shit

[@Frog-ko6uu]

Linus, when that electric water heater needs replacement, consider getting a heat-pump hybrid heater. That would be an ideal room for it to scavenge heat from and it would probably drop the temperature in there another few degrees.

[@MatthewWilson83]

A perfect use case scenario for one.

[@Neil_Smith]

You could simply move the power brick to the cool air side of your newly installed radiators, instead of mounting it to the wall... You can use one of those janky dollar store extension cords to give yourself more length if you need it, and the moving air will keep that brick nice and cool - far better than attaching a heatsink to a housing made of a thermal insulator (plastic).

[@SimonyeCraig]

I really enjoy this home brew jank that you guys come up with.

[@girdsy9971]

this is actually the best and most enjoyable content ive seen for quite some time. love a good diy project!

[@ericdavis2926]

Hey Linus you can run cold water though the transmission cooler lines built into the car rads to drop temps even more, so in theory each rad is 2 rads in one so you have 4 rads

[@toms_corner]

"Well yeah no shit, we did the math." - Alex 2023 6:51

[@Evan-lg1xp]

I absolutely love these videos! I love all the janky stuff lol. I can't wait for the secret shopper 3 episode (:

[@ArkansaDave1]

I wonder if water cooling the air cooled equipment would have given you a better reduction in room temps. This was undoubtedly simpler though and really cool seeing it.

[@WilliamHarris-nq4gl]

You should put in a heat pump hot water heater. Cheaper to run and has the added benefit of cooling the room.

[@darktemp_de]

That would be perfect for that room! Maximum efficiency!

[@electroshed]

I was going to suggest a heat pump but hell yea dumping into the hot water system is an efficiency win and you can offload some of this heat to the pool loop if hot water demand is too small eg summertime

[@Guilhermeasper]

I just love this kinda of videos with house upgrades/updates.

[@krisztianfekete3277]

3:26 you know things about to get real janky when this guy shows up

[@GAMINGOBRIEN69]

Finally an actual good use for pt cruser parts

[@Calango741]

😄

[@alexeylowell]

Cool, incredible job done. In order for the water flow to the processor to be the same on all lines, you need to install balancing valves. Like on the collector for the warm floor.

[@alalalal]

When using the FLIR cameras, make sure they are focused to the point you want to measure at, we've seen measurable differences for some cameras when out of focus.

[@letsgoenduro]

could you use HVAC coils instead of the car radiators? Actually curious.

[@rolandmeiner4970]

You know what you should do? Use a heat pump to heat up pool water. Normally these go out and "cool" the ambient air. But if you set one up inside your shop, that should work just fine.

[@RobTheSquire]

Since the manifolds don't need to be piped top and bottom the bottom port can be used as drain ports, rather than block them off that way and have piped the radiators slightly differently. Still a good idea to make use of them and the loop from the pool.

[@shrdinc]

Love this series. This is the stuff I dream of - and then just buy a mini split as it’s cheaper upfront and cheaper long run

[@sabersight908]

always hilarious when you got other people in the intro when linus does a terrible segway xD you can always just about see the faces of them being like "seriously >.>" when it is being said

[@____._____.]

8:45 the best line Alex has ever delivered

[@MrUmmIus]

I really love this series, please keep it going!!

[@tomhouston3053]

I love watching the videos where they work on parts of Linus's house. It's nice to see the progress as things improve and become increasingly polished. Even if parts are still a teeny bit janky. It's always a fun watch.

[@cconnors]

I love watching Linus upgrade his house using his business. It's similar to some construction owners but for tech.

[@TheFlow2006]

@Linus you could also install one of these waterboilers in the room that have a heat pump ontop of it to suck heat out off the room temperature, i think that way you would pull more heat out of the room

[@ethanml33]

Next step, they find the inlet for the in floor radiant heat in that room and run that room through a circuit into the pool. Basically geothermal cooling via the pool

[@Michal_S0L]

You guys should’ve used a eg or ek Honda civic aluminum half rad and welding on the AN barb fittings. No plastic less leaks, Much smaller but yet still able to cool very well

[@pcislocked]

Posting back to back videos on this water cooling saga is what I'm looking for haha, cant wait to binge watch them

[@BarsMonster]

Next step is put 1-2 cubic meter tank, and cool it at night when it's colder. This way during day you can go below ambient by ~5 degrees with no extra energy. Which is 15-20 degrees colder than you have now - and some management will be needed to avoid cooling below dew point :-)

[@lucasman22]

might be nice to install some thermocouples u/s / d/s of those HeXs, would be neat to plot performance long term, and watch for fouling.

[@yeldawg907]

is Alex wearing that hat every video until you guys do a colab with Edison Trucks? My two favorite Canadians

[@XPStartupSound]

The writing from this episode (or maybe just Alex and Linus being so damn funny) is top notch! Very very good episode

[@EvilGenius.]

If you still have an over amount of heat you could use the leftover heat in the room to heat your sidewalks and driveway as well during the winter months to keep them dry and free of ice and snow!

[@nekomakhea9440]

Chilled water filled radiators are also what they use for cooling ammo & powder magazines on older warships like battleships

[@haxie4516]

Oh that's really cool actually

[@yousuff1]

If the whole system runs 24/7 you should test it again after you have saturated the ground (surrounding the pipes) with heat, it should have a higher delta and dump more warm water in the pool. Cool project, I'm glad LTT is making more of these videos.

[@haxie4516]

The ground isn't getting saturated, trust me

[@gazsoimi]

Linus, have u ever considered to heat up the pool, by cooilng the normal house ac's outdoor unit with the water?

[@twoeggcups]

This is precisely what he should have done in the first place - let the AC do the work and dump AC energy into the pool.

[@Skiman__]

Theres another loop which goes to his solar panels, they get cooled down and the heated water goes back to the pool. Though I agree, more heat dumped isn’t bad

[@steven9492]

those things are inversely useful, the more the AC is running, the less he'll need to heat the pool

[@Neil_Smith]

This is would be a great energy-efficient solution for the AC because the ΔT can be much lower for the same amount of thermal sinking, and the AC would probably provide sufficient heat to the pool to offset a huge portion of its heating costs (in the summer only, of course).

[@patemathic]

It'll work inversely in the winter, assuming it's a bidirectional heat pump. Maybe they'll do it next spring or summer?

[@erikprg]

House improvement vids are so good

[@Tonaldo90]

*Tim Taylor grunts*

[@shellderp]

improvement?

[@syakitmc2813]

house upgrade are my interest now....please do more

[@Peterstarzynskitech]

That's a lot of cooling. Cool RGB there.

[@xPyroxx]

I love the home improvement / pc cooling content so much.

[@beefteki]

something tell me there is a behind the scenes video of Alex throwing a glass of water on linus to make him look sweaty

[@TheSwitchUK]

"Do you want this to not to be RGB?" "Kinda... Yeah" "No! I forbid it!" ☠☠☠

[@alexandermason-sx2og]

“It’s starting to come together.” “Right now? Over me?” You could actually see Alex thinking how he got here in that next frame lmao

[@forthrightnight]

Beatles song for those who don't know. Boomer out.

[@Omar13t]

An ltt video a day keeps the depression away

[@ahrma1385]

What an amazing build

[@Finger112]

You mean a House Build!

[@dscarmo]

Can't wait to see the benchmark videos comparing summer vs winter temperatures haha

[@GooseTheSecond]

I appreciate the math segment. I'm no engineer math wizard, but I sure loved going through that!

[@jc1982discovery]

As heat rises would the ceiling not be a more efficient place to collect the heat from or place the radiators? Loving this series😊

[@arkie87]

most efficient place would be right behind the server rack, like they said. next best is the ceiling, but they might not have considered that for practical reasons.

[@andrewmcewan9145]

Natural heat transfer and convection is a very weak force any fan in a room will essentially make factoring in that negligable. At least from my old research.

[@arkie87]

@@andrewmcewan9145 I dont think you can categorically say this is the case. It depends entirely on the circumstances. Even though I agree that natural convection is generally weaker than a fan, it doesnt mean that if you make the fan fight natural convection or perpendicular to natural convection, it wont still be worse than if you go with natural convection.

[@larsjrgensen5975]

@@arkie87 From the sound of the fans in the server rack, the air in the room is circulated a lot. Better isolation on all the pipes and not having a computer using 100Watts just to run the RGB fans would help a lot on the temps.

[@awlabrador]

Convection is the most efficient heat transfer method, provided you aren’t just recirculating the air in an enclosed room. Are there no air ducts at the ceiling, with or without fans to force heated air up and out?

[@Izmir_Stinger]

I want them to do a video on how this thermal camera of theirs works. I understand the physics of measuring IR radiation to determine temperature at a distance, but there is a variable called the "emissivity index" of the material being measured that you have to know to get an accurate reading. They are pointing it at insulation and PVC and plastic and metal and all kinds of different materials that have radically different EMIs. How does it know the EMI? The automatic IR thermometers I am familiar with have to bounce a laser off the material to measure the EMI and then it is only calibrated for that material.

[@andrewlalis]

I'm guessing their camera doesn't actually account for emissivity of different materials.

[@Torashin1]

They ARE using a very expensive, high end FLIR camera, but it doesn't do anything to compensate for the emissivities of different materials. You're meant to select a value in the camera settings menu, but it's probably been left at the default, somewhere in the range of 0.8 - 0.9.

[@MarianKeller]

No magic there, they would still need to manually adjust the emissivity setting of the camera for a correct measurement.

[@SammeLagom]

I love these fixer videos! Do you invite the guys over from work on LAN evenings? :D

[@cianboy97]

I’d like a full run through of the entire cooling system now it’s basically completed

[@kc0eks]

What's your electrical usage looking like? From day 1 to now? An update with each new project would be amusing.

[@tbx1024]

Linus accidentally discovered ground source heat pumps! 😂 Cool video though! Surprised it works as well as it does!

[@Rampant16]

Yeah considering the amount of time and money they spent on this, they probably should've just gotten some sort of hydronic system professionally installed. I guess that's not great for content though.

[@Metaljacket420]

Technically while it does the same thing this is still just directly transferring heat with conduction. Heat pumps use compression of refrigerant gas and transitioning it between gas/liquid to move the energy between two heat exchangers.

[@JCB99]

The use of effective rather than efficient to describe heat transfer throughout this video is very refreshing. Love it!

[@mileskemph8391]

I love the Edison Motors Hat!!