1:06 38C is 100.4F, not 104.

Ok Linus give it to me then

Not having a Jake "Mint" counter is a miss

Hello, Facilities Manager on a Data Center here. Ideal temperatures, are 21 for intake and no more than 34 on the hot aisle. calculate your warehouse temperatures knowing the desired temperature for your hot aisle. Aim for a hot air temperature and calculate your temperatures from there. Also, Kingspan is way better than any other plywood/GIB/fiberglass solution -money wise- for temperature isolation, is fast and cheap to build with if you measure twice and cut once, and you can replace walls with it (not structurally, but aesthetically) For sound, they are a little bouncy, but you can always use what Generators use for baffling: sound proof walls (made of fiberglass foam with a frame) parallel to the walls and parallel to the noise source kind of like ------------------------------------- wall sound source ->> ==== buffers ------------------------------------- wall

LTT is the embodiment of we never have time to do it right the first time but we always have time to re-do it.

As a professional contractor, NEVER trust what you get from the "professionals" at the store, always check it, I get the wrong fittings every third order.

Dont forget, there is nothing more permanent then a temporary fix

As a former datacenter tech Linus is so right about how exhausting it is being behind the server output. The sensory inputs from the sound, air movement, and heat and it’s a dry heat at that. It dries you out and makes you feel terrible quickly.

Industrial A/C guy here, Referring to Jake in the beginning A closed loop chilled water system does not lose water over time, or evaporate out. That is why it is a closed loop, they add water and chemicals one time and that's it.Unless the system is drained for repair, or leaks water never needs to be added again. Normally you have a closed chilled water loop, and your Chillers will have an open condenser loop, that cools the Machines, and the heat you brought in from the building. This loop does lose water through evaporation in your cooling towers. The condenser side IS hooked up to city water with a check valve, The water is monitored and topped up with chemicals on a regular basis to prevent corrosion, inhibit bacteria etc. Also side note if LMG actually sees this comment, that is indeed a condensate overflow switch Linus was pointing at in the beginning. Those drain pans are pretty rusty, and may be leaking- which could be a reason these coolers were scrapped. If these are ever used for their intended purpose the pans can be easily repaired by pouring in a kit called PanSeal which self levels, coats and seals the pans. Edit, Im watching this video and cringing again. Between Linus' house and this, you guys are helpless when it comes to plumbing / electrical. Get Jake some plumbing classes, or Hire someone with some Trades knowledge to help with things like this, you spent WAAY to much money on fittings silicone etc. This is such a simple project that could have been done in a few hours. (Just constructive criticism not trying to be rude)

"What will the landlord say ?" "Screw that guy"

A friendly local plumber/mechanic designer and long time fan here- you are kind of correct by saying that a closed loop hydronic (heating/cooling) system requires a check valve. However, more specifically, it requires a reduced pressure backflow assembly for cross connection control. Furthermore, a hydronic system likely will run at much lower pressure than city water pressure. A pressure reducing valve will need to be installed as well.

"It's 32 degrees in here, it is HOT" - meanwhile Australians: oh, that's a lovely Spring day!

One major issue you'll still have is that the two hoses are not well insulated from each other, in a DC setup you'd run the inlet water on the cold isle and outlet on the hot isle side, because now you're reducing the outlet water temperature and increasing the inlet temperature by running the hoses together. For DC modeling that's nearly a 40% efficiency delta.

Working construction taught me that oscillating cutters are good for literally everything. They're not the best at anything but they work adequately if slowly at basically every cutting task, so if you're not sure what cutting tool to use, always grab the vibrator.

'it's occured to me we've never actually performed a test of this equipment. What's to worry? Each of us is wearing an unlicensed nuclear accelerator strapped to our back". 😂

This really made me understand the concept your mentioned in the last cooler video where you say they pump the hot air elsewhere and cool the whole room and deal with the hot air somewhere more ideal. This is definitely super cool (not a pun) and can’t wait to see what you do with the other 4 room coolers.

Server room: _is 100 degrees_ Linus: *WATER COOLING*

As someone who just got a job testing boiler chemistry, you should ABSOLUTLEY get a filter for water entering the reservoir from the main, at the bare minimum. You should also think about regually testing the water, and adding chemicals, to extend the life of the tubes within the systems.

My head is actually like, buzzing after this video was over. I can only imagine how loud it must be in person.

I run a small 24 rack data center that uses these exact in row coolers. The valve is to balance pressure if using multiple coolers in a loop.

Really dope video, I love seeing Linus & Jake do serverroom upgrading, especially with potentially janky DIY involved, super hyped for pt 2! Reminded me of the early mythbusters energy when they were trying to figure out how to get a project done, love seeing that

These are my favorite type of LTT videos, when you build crazy, but cool things for computer/servers or home theater

I work in Building Automation, so watching this series on cooling and hearing the ideas you're talking about with actuators and temp sensors is essentially my job and it's very cool to see the ideas and knowledge being discussed from the perspective of people who don't work in the Building Automation field. There's a lot of potential with what you're doing and could go well beyond what you have so far. Keep plugging away! Looking forward to seeing how this continues to evolve.

Love the content! Please make sure y'all have some way to monitor humidity and pressure inside that server room. Temperature isn't the only thing to be concerned about. Improper humidity control can cause just as much damage as improper temps. Love everything you guys do keep up the great work!

16:19 "You can fix everything with a hammer" "You can use anything as hammer"

I realize that Floatplane peeps know this earlier but okay, now I realize that recent tower chiller video was foreshadowing. Also, it feels like LTT is in this weird zone where they're not quite super-vital data center but also very far from the homelab niche that Jeff Geerling and NetworkChuck occupy. It makes their server adventures so maniacally fun to watch, especially as a former sysadmin.

Nowadays, we watch this channel more for the crazy modifications to their building than actual tech related stuff.

You need more airflow over the exhause heater rad, to help kick more heat out of the system. Also, you could possibly add a couple of metal radiators... Try throwing some central heating rads around the warehouse to help increase the thermal mass, and dump the heat at more points... Remember your cast iron water cooled system a few years ago? "heating a house with a PC"

Advice for testing leakage for next project involving plumbing: When you think you are done with the plumbing use an air compressor to fill it with air and spray slightly soapy water on the fittings. If it would leak it will bubble up. This way you can fix leakage without needing to deal with water. Then you can fill the system with water.

Fun plumping tip: if your using pvc glue and you're not using the primer the glue will fail to properly set. so not buying the double pack can cost you more in the long run causing you to buy more glue when all you had to do was buy the glue and primer, prime both joining ins, glue one side, and put it together. Anyone who tells you to buy only the glue is just wanting to cause you years of frustration. Since this set up is temporary (just a few months if this video is to be believed) i don't see Jake's bad pumping job going to cause a major failure. in fact you can pull everything apart and fix it right later when you do the more permanent set up. Also I'd rust treat that bottom drip/condensation pan so that part don't fail(use like Rust-Oleum brand Rust-Oleum or rust be gone or something like that).

Really nice Video, love to See all the LTT ˋself Build Infrastructure´ Videos. Jake is really good Host and his sidekicks Alex and Linus sum up to make it complete. Looking fwd to the next one.

One of the places I worked had a temporary supercomputer in its server room. The AC cut out, and the fire alarms went off before the alarm, which caused the AC to go off.

It is kind of epic realising I am still using a sata ssd when this stuff exists

4:51 I absolutely adore the fact that you have to state the obvious to avoid all the dumb comments

For soundproofing with rockwool. Build boxes, covered with perforated sheet metal , give the sound the chance to hit the wool.

I haven't watched an LTT vid in ages due to it going a slightly different direction. HOWEVER this took me back to the early vids, so entertaining while also being interesting and thought provoking (for better or worse... lol)!

I saw this system working on a datacenter-level at the datacenter of my university, and I can say that this is certfied janky. But it works like the real datacenter! 3 degrees difference, and 24 degrees in the server-room. I'm amazed at the similarities!

Sweaty linus oilup when?

Jake complaining about the fittings being expensive showing $16 a piece, while he builds a cooling solution for a $1,000,000 computer had me cracked up 😂

Crazy to see how far you guys have come from the copper pipe water cooling you had way back in the day to these crazy cooling systems you still try to do to this day with such huge production value but the same fun! Absolutely amazing content. I love these ridiculous cooling solution videos

be careful when sticking the rads directly to your racks. We've had a system like this from Rittal and it was worthless - turned out, you need a LOT of airflow and pressure to get them working, and ended up zip tying noctuas to the rads to make them work at all...

These construction videos with Jake, Jake/Linus are my favorite things ever. All the server room vlogs and construction stuff. Love it!

Been in the data center field for 10+ years. It always amuses me when LTT tries to bridge the gap between building your own PC to servers and DC equipment.

2 tips. 1. Don't cheap out on thread tape. 2. Don't over pump your loop, you will end up with high pipe velocities and start blowing through fittings, especially 90's.

"It will be done right later." Yeah... Right... Nothing is as permanent as a temporary solution...

That Milwaukee impact @16:22 very much IS a hammer. We've got ongoing jokes at work about how if it says Milwaukee, it's a hammer. It might also be something else, but it's a hammer. Which is extra fun because my PC case has a Milwaukee logo glazed onto the side of it.

As someone who did wasteless heat management for a server closet in a tight building apartment, I'm loving this )

Btw you might want to check I think rockwool isn’t designed to be used in open air because it spreads its fibres everywhere which your not supposed to breath.

Hold your fitting in your left hand, hold the tail of the teflon tape with your left thumb, roll the tape off the roll backwards so you can tension the tape and roll it off the roll, three wraps around the threads. If you absolutely don't want it to leak, throw some "Gimme the Green Stuff" pipe thread sealant on top of that and you'll never have to worry about leaks.

17:25 Dad joke , on the SPOT xD

Love it! we need a Part II of this! :)

Looking good, Jake. Great job on leaning down

In the hangar where I worked we used an oversized muffler to kill exhaust noise from the Electrical systems air exhaust in the aircraft. It worked great without impeding flow. Basically your normal exhaust diameter with a bunch of holes in it and a larger diameter tube around it with some light insulating material. little to no restriction of flow but plenty of opportunities for sound waves to bounce around and die out.

Please restock your watterbottles, I'm trying to give you my money( edit, they restocked them! :)

I love this project, cant wait for the follow up!!

BRILLIANT concept to use waste heat for space heating. Like Tesla! I've always wondered why refrigerators are not placed to exhaust heat to the outside of the room they're in!

i work in a big plastic extrusion company and we have pipes under our outdoor storage about 20.000m2 and in the winter time we can remove about 500kw of heat from our production and the cost is really low because it only runs with one pump and nothing else. even with an outside temp of about 15 degrees wwe get a return temperatur less then 20

17:30 the way linus smiled before the scene cut off

I always get so inspired to go to the gym watching Linus vids

WooooW ! Linus Crowd , this video is very astoundingl ! you are just amazing heroes of thermodynamics ! my very congratulations to all team for this amazing process well done! you have to be proud about yourselves!

The problem with all these massive powerhouse servers always seems to be that - example in the company I work in - the bottleneck is always the hard encrypted VPN connection for all the remote workers.

Linus/Jake videos are always, always, always my favorite. Just the banter and little tiny snippets of something out of context, the editing. It's a perfect story, with lots of engineering.

JAKE! WE SEE YOU! Looking good brother. Keep up that hard work!

When you make cold/hot zones, you need to blank off every empty unit in your rack to make it most effective. You can buy plastic blanks to click in place where there is no servers mountet.

I used my mining rigs for heating during the winter while living in the arctic. Worked great.

You should throw a small 5-10kw geothermal heat pump in that system. The brine side run down to the server room and the heating side up to heat the warehouse. So you can move way more energy without using multiple cooling towers.

Fun video. Love Jake as he has matured. Great foil to LInus.

This series of videos, I love it, I just enjoy this content and it's fun bits

"Mint!"

The valves to choose where to send the heat is a really cool idea. Good thing you've got 6 of the cooling towers!

Hey Guys,.. there is a thing called and "Air Scoop" that is in my boiler system and it's job is to remove air with a air bleeder in it. That pump you used is for boiler systems which gave me the idea. Good Luck! Also, when you put Teflon tape on,.. you twist it up and follow the threads then untwist and lay 3 layers flat ;)

I went through all this just before retiring. Smart valving and dumping waste heat will work for a good chunk of the year but you'll still need a water chiller for a few months a year to be able to transfer heat when it goes over ~25C ambient. That said, you'll achieve much better sensible cooling efficiency with a chiller than with CRAC units due to the chiller's higher output temperatures (in this case the chiller is interposed between the server room and the external radiators) I did propose that we use the waste heat to warm up the facility swimming pool in winter but that was kyboshed because someone would have to pay for 200 metres of waterline to get to it and nobody would stump up (it would have made the radiator/chiller load a LOT less in summer when the pool can act as a daytime heat soak and night time radiator, with power savings paying for itself pretty quickly) My server room went from being thermally limited to 18KW of cooling to being certified for up to 80kW (with failover) at roughly half the power consumption of the old CRAC setups at full song - most of the time the only load is pumps and fans.... Doing it right is vastrly cheaper than doing it over. It was a £250k job to fit the appropriate power and cooling systems (which I had asked for in the first place) rather than having pointy haired managers discard my requirements as excessive - resulting in the "new server room" being unable to accomodate all the existing kit scattered around the estate as we couldn't cool it sufficiently followed by 10 years of stand-up screaming matches and regulators demanding we clear out kit from the "old server rooms(*), which needed to be repurposed as ITAR secure storage" It's insanely difficult to run a 24*7*365 operation with some contracts subject to downtime service penalties(**) when you're changing the cooling and all the power feeds at the same time (*)those rooms - usually converted closets - ended up being stuffed full of other kit as soon as our backs were turned after we removed the critical stuff, which made the problem even worse. Never allow "temporary" accomodation when closing down an old server room and make sure you disable the cooling, or SOMEONE will manage to sneak stuff in there and make it your problem again (**) When you explicitly say there is no way to guarantee continual service and people sell it to governmental entities with those guarantees, guess whose head that lands on? If you said the IT staff you'd understand why we go grey prematurely.

UHU MENTIONED 🔥🔥🔥🔥 GERMANS WHERE YOU AT????🗣🗣🗣

Jake’s lost a bunch of weight, good job man! Let’s Gooooooo

I love Linus and Jake, the chemistry is superb.

Jake did a great job on this one, very enjoyable to watch

Ditch the AC altogether and put a water to water chiller between the two heat echangers and you'll close to double the heat pumping energy efficiency. Then you can put a heat exchanger on the roof for the summer time(especially as they say we could have an even worse heat dome this year) and just use a 3way valve to direct the hot side water outside the warehouse during summer.

As a DIYer with plenty of friends in the trades, I can confirm sharkbites suck ass. I personally prefer pex with either crimps or compression fittings whenever possible. Yeah, the SB have a 25-year warranty, but are you really going to warranty them when they fail. No, you're going to replace it with something else.

2:41 It makes it easier to stand something up for sure when there's a third person lifting the other end for no reason, thanks for your help linus 💀💀💀

love it! Last videos have been great you guys!

Actually Jake and Linus, instead of dumping the heat outside when you don't want it, which would be ideal under most circumstances for most folk, you should instead dump the heat into your hot water boiler(s), and possibly even a huge insulated thermal sink to act as a battery of sorts. When you need more heat, you can pull from it, and when you don't need heat for anything, you dump into it. You could do the same thing with the geothermal cooling idea you have with the parking lot, but instead just make a new thermal sink that is insulated for cold temperatures instead of hot. In that ones case, you are constantly pulling its heat via a separate loop dumping any heat it has into once again the heat battery, while having the original loop pass through it to drop it's water temperatures below ambient. Between the two masses being used to modulate the temperatures accordingly, you should end up with an albeit more expensive system, but also more resilient against the swings in climate, room temps due to people being in the area, etc and so forth. The A/C units will barely need to be operated then, ideally; and if they turn on it will be in a worst case scenario where you really want them on. Attach this to some in-floor heating/cooling loops, and perhaps some thermoelectrics where is reasonable, and you could basically turn the entire building into one giant heat pump, with ability to throw the peltier's into reverse for the Seebeck effect. It won't be a lot of power generated, but it might be enough to keep the lights on at least via a backup power system charged by that power generation. In an emergency, this could prove handy, having what would basically be off-grid emergency supply of power if the grid suffers a black out. It won't be much power, but if it keeps the lights on, and some cellular phones active, it's good enough, right?

The several random people standing around and the camera man: "Should we tell Jake he has a white thing in his beard?" ... Everyone: "Nah. It's funnier this way."

This is my favorite type of content on LTT

More simply, they use the split air conditioning that they already have and put the condenser inside the warehose. They can have two air conditioners, In the summer they use the one with the condenser outside, expelling the heat out of the warehouse. in winter the other. They also have backup when maintenance needs to be done on one. I always watch your videos from Lima Peru

14:36 This whole section was pure comedic gold. Reality, Editing, the whole thing :D

If you move the AC evaporators into your warehouse you'll utilise all the heat from those also. Plus have the added benefit of the efficiency of heat pump technology essentially. She'd be good and toasty 👌🏼

I think this is the future of heating, shifting heat from where it is not needed, to where it is needed. I keep reading about systems like this online, like heat from London's Underground trains heating student accommodation. Also using heat pumps in between the source of the heat, and the final location to be heated. Can concentrate the heat a bit more, if not enough heat is getting transferred.

As someone in AEC, this is why we have to explicitly tell our clients to not put things on these types of mezzanines, and that if they want storage up there they have to tell us so we can make it so that they don't have a major lawsuit when something comes crashing down. Now something like this *MAY* be fine, but only one way to know for sure.

That’s a budget pc

In row cooling is very neat (cold / heat isles) :) Worked at a place where we used 6 double wide of these units

I had to replace my outdoor water faucet, but not only was it in a really hard to reach area, but the indoor shutoff valve, and the connection to the pipes was seized, and it was way easier to just cut it all out in sections, and start with a new indoor shutoff, otherwise to use a flame torch in between the rafters and all of the many wires and insulation would have required adding a bunch of flame/heat shielding Making the space even smaller. Then I found the shark bites, and had what I knew could take a whole day, done in ~1/2 hour, and its held now for a few years, and the freaking valve is like new, so didn't crust up, oxidize... Great stuff, well worth the money, because it also comes apart just as easy! They even have little sharks engraved on them.🦈

"Not everyone's a Poser"... I'm cracking up! He had no clue Linus was doing the T-pose and still managed to get that burn!

I wanted to do this back in the early 2000's, when hot aisle was the big thing and APC were pushing it. Tho I was wanting to feed the excess heat into a water tank to give the whole building 'free' hot water. I thought it'd be a cracking publicity thing too. Alas, a golf course deal was made for a different idea. :/

I would have suggested that you use anti-freeze, and you should also consider using a vacuum for fill it. The coolant will add some anti corrosion protection. And you do not need an rPi to control the valves, A pico or esp-32 will work just fine for that.

I love every interaction between Jake and Linus. Every video they are in them, i laugh all the time!

On our systems we use fully immersive silicone oil baths for the server motherboards (i.e. usually Tyan AMD EPYC mobos) which is an inert non-conductive coolant. The coolant gets sent to heat exchangers / condensers mounted on external parts of our building. We even dip the 20 Terabyte hard drives in the coolant to keep the drives cool. I think we are at 400 ExaBytes for our Vancouver data centre now so that is getting up there in price! LTT might want to look at dialectric coolant in a fully immersive coolant bath scenario for all server mobos and drives.

I'm down to take it off your hands, Linus

How about putting two of these cooling units horizontally on the ceiling of the server room? Would take advantage of convection and you could literally double your thermal throughput in the server room, without taking up any floor space.

06:36 "It occurs to me we never tested this thing." I CACKLED. That was the most sitcom-esque line I've ever heard Jake say. The stance. The delivery. 😭

This video just flowed perfectly. And that breath montage... wtf lmao. Loved it.