Our DIY CPU Chiller From AliExpress is RIDICULOUS

[@IAmCoopa]

As an engineer I absolutely love all of this whacky engineering content, I would 100% love to watch longer format videos that keep dive into some of this stuff more.

[@xovouaed]

Really hoping they release more on Floatplane for things like this! Would love more details.

[@glxytoni]

Floatplane probably

[@rherydrevins]

"Engineering". Michael Reeves is more of an engineer than Alex is. So is Electroboom, Adam Savage, Simone Giertz, Integza, Joel Creates... heck, even Dan, on this very channel, is a better engineer.

[@Lullabbbyyy]

@@rherydrevins well ofc. This is just a whacky project and nothing to serious

[@nickel36]

@@rherydrevins maybe, but also Alex does have an engineering degree.

[@tayloraldridge3063]

Alex's cooling ideas are honestly my favorite videos

[@andrelascasas3156]

When he actually tries and don't just half ass it, they are nice

[@achaerna.6662]

His video ideas are the most interesting thing on the channel for sure. I'd be way more into the boring "we bought a mansion" videos if Alex was doing all the HVAC.

[@KirkLazurus]

Still not as ambitious or cool as whole room water cooling.

[@squareacid]

next time they just dump the whole pc into ln2

[@hmello3250]

agreed

[@Steamrick]

I really hope that there's a followup video where Alex fixes the worst issues with this cooling apparatus... there's soooo much room for optimization.

[@tzxazrael]

that WOULD be really cool to see if it could ever be really good at what it's supposed to do... but on the flip side, "optimized and efficient" isn't really the reason we click on these videos, is it? xD

[@CorDawgYT]

Imagine spending that much money on tools and equipment, and this is the results...

[@amagal9091]

There is a channel called "Этот Компьютер", in his playlists there is a playlist called "Пельтье", there he assembled his cooling system on peltier modules with a solution to the problems that Alex encountered(these videos are two years old)

[@onemananarchy]

I would also love to see them get the full power and tie in a GPU block to the loop.

[@ThePiprian]

Der8auer has a video where he built and tested something like this and it worked pretty well iirc.

[@eduardocarrasco8830]

Alex, the way you connected the pumps is not giving you double the head pressure, you are basically connecting them in tandem. This mean that one pump discharges just to feed the suction tank to the next. There is not pressure transmission doing that, so basically is just the last pump working, the first is just feeding the second tank, that’s it. If you want to connect the pumps in series to double the head pressure you need to connect directly the discharge side of pump 1 to the inlet side of pump 2. If you want to double the flow, then both pumps must be connected to a discharge pipe at the same time, but the total head is equivalent to one pump.

[@NonSensicalCharacter]

I feel like in a previous video, it was established that if you want to do this, you should first run the hot water through a radiator to get the temperature down for most of the way and then run it past the TECs to go sub-ambient.

[@Wolfesbrain]

I love all of these "technically feasible but practically inadvisable" projects. Give Alex's mad science lab a bigger budget!

[@certainlystormy]

literally the best shit on yt

[@360tomahawk_obese_gorilla87]

they should give him his own channel to do this shit

[@Angel_EU34]

"technically feasible but practically inadvisable" sounds like a mantra for engineering school xD

[@OddlyIncredible]

"Technically feasible but practically inadvisable" basically describes overclocking generally. ;-)

[@incywincy2k]

And make him wear a white lab coat

[@Nickgowans]

Alex went from nervous engineering nerd to full on video presenter in a few short years. It's a beautiful thing to see

[@shanekhiu9884]

Just like Linus at the start, a worthy successor.

[@norkshit]

@@shanekhiu9884 Alex for LMG 2100

[@lucasmelee]

now he's a cooling mad genius and we love it

[@LautaroQ2812]

Indeed. I remember his first videos... he was paired with Riley and I believe Anthony also had some videos here and there. They both sucked. Riley was always a natural. I bet he cheated. But now Alex has found his own style and it''s fantastic.

[@malifor2210]

I remember his introduction with the laser cutter! But that's wayy early on!

[@13StJimmy]

The Alex and Jake combo is pure gold definitely would love to see more of them together

[@tipturkey1283]

The kids just running wild in their dad's garage

[@Redbikemaster]

They definitely were great together

[@ALonesomeStreet]

It was chaotic and I love it

[@MrKozlosPL]

Alex, Jake & Dan are perfect trio. Alex "should be fine" frankenstein inventions are lawful evil. Jake's persona is chaotic good. & Dan is the true neutral with pinpoint accuracy reactions. I can't imagine the LTT/LMG without them.

[@HAMpeach]

It really seemed unplanned too haha love it!

[@indigenous.rabbit2877]

I believe you ran the cooling to the peltiers in parallel, that would completely explain why the coolant was not getting there. Water always takes the easiest route so there was no need for it to go through the top ones, it could just go through the bottom ones. Also rethink the diameter or your water tubes, the tubes going to the waterblocks were really thick and the one going to the pumps was only a little thicker. No wonder there was almost no flow in some areas. You would probably be fine with those flimsy 5mm ish tubes going to the individual units on the hot side. Maybe for a second iteration of this split the cooling system up into groups of like 4 peltiers cooled in series with smaller separate radiators. Also have the water in the cold loop flow the other direction from that in the hot loop to make sure the water doesn't get reheated by the higher temperature peltiers (because they are in series the last one gets a lot warmer cooling water and thus will cool less far on the cold side). I think by hooking up the cold side in groups of 4 (or so) with their own pump and combining the output with a splitter to the CPU plus the aforementioned changes you could optimize this setup.

[@cho4d]

You need a separate res at the top of the loop for this to work. pump at the bottom, res at the top, then you're not fighting gravity. come on guys this is water loops 101!

[@cho4d]

also the clamps idea was alright, but you can make mini clamps out of 2 sections of dowel and 2 wood screws. then you can make 1 adjustable clamp for each inlet and dial in the restriction perfectly!

[@milktaster85]

Alex doing silly cooling projects are genuinely my favorite videos on the channel, I hope we see more in the future.

[@Nepoxification]

I assume we already see as much as possible 😀 These projects take up so much time and are so damn much work to realize

[@Spoco]

Still waiting for a video where they do sub-ambient cooling without electrical worries, by sealing the whole PC in a different atmosphere without water in it. Someone needs to do it!

[@bigschnozer576]

That’s how I found out LTT

[@koalaunknown]

I would love to see a sequel to this that uses the same idea but in a more optimized way.

[@oliverwhitaker5760]

using a server 12V only server PSU, and maybe using cheap air coolers on the peltier hot side to half the effort on the cooling runs might help!

[@adoksym]

Then you should watch der8auers Video on cooling with multiple peltier elements ;)

[@je2231]

again the scariest things an engineer can say is "it should be fine" or "it will be fine"

[@Princess_kitty14]

Alex was so preoccupied with whether or not he could, he didn't stop to think if he should

[@richardgarrett2792]

That thought has rarely if ever entered his mind.

[@tdgchan]

Alex was so preoccupied with whether or not he cold, he didn't stop to think if he should*

[@kanetw_]

1. Use a few distribution blocks (eg Phoenix PTFIX) instead of soldering 80 wires. Or good old Wagos. You'll hate yourself less. 2. I would do a 5s4p connection instead of 20p to save on tubing effort while having some redundancy. E: any manifold connection has potential for unequal flow so you need to watch out for that. Big benefit of series tubing is you have the same flow rate everywhere.

[@DrakkarCalethiel]

5s4p with each string on its own pump would make a whole lot more sense.

[@ShieTar_]

But that means potentially trying to remove 600W from a small 40mm x 40mm waterblock. I don't think you can get a fast enough flowrate through it to make that happen.

[@zeendaniels5809]

Add some RGB. You forgot about that.

[@todorow22]

He could tune the flow rates with flow controls. reducing flow in the lower peltier devices would probably balance the flow up to the peltier devices that are much higher and thus need more head pressure. If you are feeding the same head pressure to each row the top will never get good flow.

[@kanetw_]

@@ShieTar_ Don't underestimate the heat conductivity of water. 600W on 40x40 sounds like a lot but is extremely manageable

[@madeintexas3d442]

There's nothing that makes me happier than a video where Alex makes some crazy contraption. It is very relatable.

[@JETWTF]

For a manifolded assembly like that you want it to be horizontal rather than vertical so gravity affects each one the same. Then you can have radiators attached to the hot side drawing cool air from the cold tubes on the bottom and the cold side blowing chilled air over the hot tubes on top for a small performance boost in the setup.

[@Matty.Hill_87]

Dan's reaction was incredible 😂😂

[@diptarghyaghosh8526]

AbOmInAtIoN

[@Michael_mki233]

Dan has been the best addition to LMG since Anthony.

[@ICanHazRecon911]

@@Michael_mki233 he's slowly started to become my favorite LMG member for a while now lol his reaction was priceless

[@Dornacgove]

The only thing missing is the "What the f* are you doing and HOW MUCH DID I PAY FOR IT?" Linus cameo.

[@Nick-rs5if]

Yes! 😂

[@kraigmeares8286]

Lots of room for improvement on this one. Would love to see a rev 2

[@QueenSaffryn]

It's that time again, janky water cooling with Alex, I love it, these are my favorite videos LTT makes, and I hope the series never ends :)

[@c4sualcycl0ps48]

It’s great that they always happen at the onset of the new generation. Then legit coolers come out, then the next generation changes it up again and the cycle repeats

[@Parzivilian]

Time for my daily dose of absolute certified craziness presented by Alex.

[@Thebadbeaver9]

You need a manifold that distributes to each of the lines with a constant volume flow rate. In other words, the fluid is taking the path of least resistance, like the lower TECs and shorter tubing runs.

[@sHoRtBuSseR]

This is the right answer. Restrict the lowers, use separate pumps, or series up several of the TECs

[@lasskinn474]

just have loops for few tec's each going to a tank and a different loop from the tank to the cpu.

[@Nur__]

@@lasskinn474 makes more sense

[@milamber319]

I failed thermofuids 3 times and even I was frustrated he didn't lift the red above the techs

[@scarletspidernz]

I played too much factorio/satisfactory to know this 🤣

[@rodrigocunha34]

You should connect the blocks in series. So you solve the pressure problem and equalize blocks temps.

[@Wrenchmonkey1]

Agreed. Would've made it really easy to bleed the whole system

[@sharpfang]

Hot side in series would only make most of them non-functional as they'd be "cooled" with hot water (heated by earlier ones). OTOH the "cold side" in series would freeze the antifreeze, as the cooling effects would keep stacking.

[@sharpfang]

@@muffinconsumer4106 Would require a lot of smaller radiators, couldn't use these big liquid cooling radiators they did.

[@broklond]

You gotta connect those blocks on the peltier-s in parallel (at least in blocks). You could do four groups of TEC-s with each group having their own pump and radiator combo so you have higher crossection for the water to flow through. If you connected everything here in series, I would imagine, the pressure needed to push the coolant through the whole system is too much with just a tubes diameter of cross section for coolant flow.

[@TorgieMadison]

As I understood it, they were connected in two parallel blocks of 10. The frame's left side supported 10 TEC-s, and the right supported the other 10. Front was cold, back was hot. Am I missing something? These aren't connected in series at all.

[@LievenSerge]

@@TorgieMadison They all had their own circuit, which makes for a very long pipe in sum. When you group 4, you almost cut that length by /4 -> less pressure is needed.

[@VealCalf1]

I mean, yeah. But if you do that and lay the frame down so that you don't need the pumps to lift the coolant 3 feet it would work a whole lot better.

[@LievenSerge]

@@VealCalf1 If you make yourself familiar with these particular physics you will learn that the relation of pressure needed to length of the pipe is not linear. Spreading out the pumps to different positions in the circuit could help with that.

[@yenchenje4611]

I've never gotten cracked up by these sentence but when Dan came up to them and said "What the fuck is this abomination?", "What are you cooling?" and "What are you heating with this?" all at the same time I audibly laughed

[@MrOnosa]

Dan's great

[@vdoxsamp7283]

0:43 oh-oh, watch me **Double-tap**

[@elisdee1]

Alex is by far becoming my fave LTT member

[@ulrichkalber9039]

i think you might get better results if you use a large high reservoir above each loop and let the pumps just pump the liquids up, then let gravity let the liquids flow through the coolers this would probably get equal flow through each cooling element. that way you could also store some cold liquid in the reservoir and run a benchmark from the stored cooling capacity of the reservoir.

[@Acssnipa]

Thank you Thank you Thank you LTT, 1 wk ago it was so close to buy the 1/10th of your test parts on Aliexpress, still try to convince myself, then you did it for me, saved he heaps effort, and made my mind to keep standard water cooling. thank you again...

[@JacksonAcademy1]

16:06: I like how they black out the password, like anyone wants to break into their warehouse, ignore all the expensive equipment, and take a motherboard covered in vasoline 🙄

[@SoniasWay]

I love how positive Alex’s energy is

[@moRaaOTAKU]

He loves cooling of course he's a chill dude

[@Nate_the_Nobody]

14:30 Thank you for such a selfless sacrifice to bring us such precise scientific data

[@Raikos100]

Alex is the best learning source of how to do water cooling, by pointing out ALL of the "don't do this" examples. A true master of his own craft.

[@ManhwaMystics]

Alex must be having the time of his life because we all know weird ideas pop into our heads but everyone get the chance to implement them.

[@Jake12220]

Stuff like this is why I'm subscribed. By far my favourite clip from LTT in ages. Just a pity Linus wasn't there to drop it.

[@thejo6331]

I'm here for more of Alex's off-the-wall cooling ideas! As in, he comes up with the ideas by "throwing shit at the wall to see what sticks", then makes videos out of what does /not/ stick.

[@kol101101]

This is absolutely insane and im so glad you guys made it. 9:21 best part

[@VRtechman]

These guys could never be plumpers! Or anything else than KZbinrs! 😏

[@JamieMoller]

I SEE IT. He has the engineer eyes now. You know, the sort of sunken, passion deprived gaze that is earned by answering emails and attending team meetings instead of doing ACTUAL work. Congratulations.

[@ViliamF.]

We are slowly getting to a point, where our CPU coolers will need their own coolers.

[@Exilir8]

@Ahmed Jones but If we get a cooler for the CPU cooler's cooler, then we'd also need another cooler for the cooler for the CPU cooler's cooler.

[@joelfrom08]

Alex's introduction to tecs and cables has probably taught me more than the 8 years of physics class I had so far

[@justinpierce3367]

what?

[@crazzywolfie]

i think you should try improving this. you should mount the pump/reservoir up high to prevent air lock and pressure issues if you want to keep testing the in parallel like you are. i would recommend each row of coolers in series and then have the rows connected in parallel. it would really force the coolant to circulate through the coolers and likely require less force and make the water much cooler.

[@amiryousefi5374]

actually u just write my toughts 😅😅😅

[@tobiasjames6949]

Exactly, never understood why most liquid cooling setups in typical computers have the res down lower either, should be the highest point - even higher than the rad - makes it much easier and would automatically deaerate

[@AKOsiMORRIS]

from how I understand piping in general (I am not an expert) the reason there is so much air trapped is because they don't have any pressure release valve located on the highest point of the loop so the air just gets trapped on whichever place gets the water flow last... it's basically a one-way valve that traps liquid below it while release any air upwards without giving it a chance to get back into the loop (I think the show The Good Doctor made a decent demonstration of this)

[@MD2389]

Honestly, I love these types of videos, even if the result doesn't exactly pan out! Sometimes you get a wild and crazy result, and we all benefit by learning!

[@Zephyruxs]

alex is easily my favorite person to see leading a project

[@KuramaKitsune1]

Should have had those tec modules in series and parallel behind each other cooling the hot side of the other tecs for a multi-stage

[@Frightenerd]

9:26 I bet Lulu wants a taste then

[@luigigaminglp]

Alex, Jake and AliExpress in one Video. And its exactly as insane as expected!

[@nathantron]

I really was hoping they'd go all out and like machine a whole water block manifold for the in side and outside. I would love to see a rig they make that actually has some bananas cooling and could be used later on for other experiments. Kinda like their air conditioner cooler.

[@edenrose2374]

@LTT - Alex, there is one-way air bleeding valves. if you attached it to the top of your return distribution block, you could bleed it without issue. Also, that antifreeze should of been thinned, it was killing your pump performance.

[@ral-xk7qb]

12:14 "The D5 pump loosener has escaped prison and the police are on hunt to find him!"

[@chrols1]

love alex's strange, wierd and amazing cooling ideas! best one yet!

[@YOEL_44]

Only time I've used a peltier was for a DIY dehumidifier, they're terribly ineficient, just don't use them.

[@otakuotaku6774]

I think with the new AMD cpu and Nvidia gpu all the time the user will be thinking about the Electricity bill

[@richardgarrett2792]

'Borrowing' from a friend.

[@michalsnaiberg2734]

then again, you wouldn't need heating at all during winter, so the expenses might cancel out

[@upholsteredhero5216]

The way you do this is to buy larger water blocks. You can get blocks that are longer so that you can attach 4x or even 8x pet's per block. The correct way to do it is to add a pet inline wired up to an inverted furnace thermostate so that you can temp controle power on and off the pet's. Best way to go sub ambiant is with geo thermal heat sinking though. Your coolant should stay a constant inline temp between 10-15 degrees. Heres is another hint people condensation requires a temp differential based on humidity in the air. So if your pc was in an airtight humidity controlled enviroment like a mineral oil case or a freezer you can eliminate the opertunity for condensation to occur.

[@Walaby50]

Best combo, Alex‘s wacky builds an Jakes jokes and ideas go a long way for great entertainment!

[@pseudocode6506]

Exposed wiring, lots of water everywhere. Loving it.

[@kylepawlaczyk6293]

It is not just a pressure issue, it is a flow issue too! You need to assess the temperature drop of the coolers and then use Q = M.C.DT to work out the total flow required.... then assess the flow of the pumps against the head pressure of the assembly.....

[@matthewfaithfull1893]

I built one of these for real and fitted it in a case last year. 380W and 46900 in CB23, 3970X 6900XT, 7 TECs, 3000W of PSU.

[@jessery475]

Peak Alex. Best addition to the team. Been watching since the days of just Linus and luke and having Alex onboard feels like a breath of fresh air.

[@davidpretorius2984]

This whole video feels like 2 kids got left unsupervised with dad's tools over a school holiday. I love it

[@RabterPlaying]

You need to put the pumps in parallel to get a higher flow rate. You dont need more pressure you need a high flow rate to feed all the tubes. Since there are so many tubes in parallel the pressure is instantly dropping (because of the low flow rate) thus not reaching the top. What also would help is mounting the pumps on the top so the pump is higher than the rack

[@seanyem]

Bloody fantastic! Alex has the best and craziest idea's, the things we have all thought of doing but would never do, But he pulls them off. Love it

[@gabrielevento6527]

If i was Linus i would be so proud of Alex and his mad ideas. Also he got so much better in front of camera, i'm so happy to see him do this kind of stuff with this confidence. Go Alex!

[@xoronaqtvods1048]

this channel has gotten me through some hard times and every time I hear the intro song I smile

[@Neoxon619]

Jeez, & I thought the RTX 4090 was a power guzzler.

[@Its_Onion]

Guys need to get the thermo coolers on the back of plate/heatpipe and only turn it on at like 60% load for short bursts

[@ShieTar_]

Don't you have a pretty well-equipped workshop with a CNC? Don't you think making yourself a nice channelplate from a copper (or aluminium) block might have ended up being easier than assembling 40 of this tiny waterblocks? And also probably add less flow-resistance to you water-loop? Also, much less problems with the massive height-differences? Also putting the full voltage on the TECs might not be the bestest Idea, once the hot side loop isn't capable at staying near ambient temperatures anymore, the cold side is still going to give you a temperature difference, but now it's only relative to the luke-warm water on the hot side. And 1400W on the (maybe) 100 l/h you get from a D5 means: 1400W / 4.2 J/g/K / (100 kg / 3600 s) => at least 12K heat-up per cycle, not sure at which temperature your radiators will manage to remove 12K per cycle? By the way, if the TEC is specified to a maximum heat transfer of 120W, than this is the heat it can take from the cool side, at 0K temperature difference. While being operated at maximum specified current, and usually at a very low efficiency. Which means 120W is by no means the maximum of heat it can offer at the hot side, that is more likely to end up between 360W and 600W. So with your 3kW of PSU-power, you wouldn't have been remotely on the safe side if you had given them their maximum voltage. But for a small TEC that want's to move 120W this voltage is probably above 12V anyways, right? All I'm really trying to say: There is a way to build an effective, and reasonably efficient, chiller from 20 TECs with 120W peak capacity each. But there is also a way to just yolo it for a funny video ...

[@BenQuigley]

I was thinking the same thing

[@macking104]

but that is too logical and not humorous…

[@IanTheWoodchuck]

What about a reverse pumped system? Have a rez tank on top of the frame with open lines to the manifolds, feeding the TECs. This way the water is always moving down, assisted by gravity, until it hits bottom where it loops through the radiators and then out to the pumps suck in the water, then push it back up to the rez. The pumps won't be fighting to push through so many split lines and only have to get enough head-pressure to get the fluid back to the top where the system will be able to burble out any bubbles still in the lines or produced from cavitation.

[@costafilh0]

Parallel was a bad Idea! You also need a LOT of quick disconnects for easy maintainance on every project!

[@foxyy_cs]

9:27 It was perfect for a Lulu quote "That tasted purple"

[@chem_e_markmark6374]

Pumps and reservoirs should be at a higher elevation than all the tubing. That way you aren’t trying to push air downhill on the returns. Don’t fight gravity when you don’t have to.

[@XTJ7]

At this point Alex is just living out his wildest cooling dreams. I feel he probably left instructions that, in the event of his death during one of these LTT projects, there will be an engraving "worth it" on his tombstone. In all seriousness though: while we enjoy all the messing around, please stay safe dude!

[@Corristo89]

Alex's janky cooling solutions paired with Jake just being Jake... perfect.

[@Freek1989]

Alex, Jake and Dan should have their own series, period

[@miha493]

I like how Alex be like "Linus, we are really need all of these several thousands of dollars CNC's" and his actual projects be like "clamps, duct tape and blessings of Gork and Mork ".

[@aeonspast]

This video brought to you by the phrase "Send it". Just like we are going to send you to our sponsor! - Having Jake and Alex together on a project just SCREAMS mad scientist to the extreme.

[@MD_Builds]

honestly... You have the tools. Make a large custom block with channels inside it to mount the Peltier's to. With a single feed in and out through to a single pump... Same effect less mess :D

[@kevinmberry]

So, this *does* look like a movie prop. In the immortal words of Johnny 5, no disassemble! I want to see this in a sci-fi dystopian cyberpunk meets Mad Max build in which each thing is absolutely hacked & bashed. Also, the forehead thing was one of the funniest things I've ever seen on the channel.

[@rlrsk8tr]

First, you can use more than 1 tech per heat sink. Second the techs have to be current limited otherwise they reverse and become heaters. Third you can generate current if there is a temperature gradient on both sides like a thermocouple.

[@Rockport1911]

They said new Ryzen will have much better thermals than Intel i9 but then they screwed up with the unneccesary thicc heatspreader. Skimming off 3mm off that heatspreader would up the efficiency a lot. Thanks to the person who makes these DIY Aluminium waterblocks in various sizes. Many DIY watercooling solutions wouldn´t happen without them. I did some myself and had no problems with them...

[@liquidsoftpc]

15:12 "Is it in?" *That's what she sa- . . . oh*

[@TheAssirra]

This is so chaotic and i love it. Dan's reaction also made me burst laughing.

[@HerbertVerbaas]

I'm living for these kind of videos. Best content to watch on a Sunday with a hangover.

[@willgallatin2802]

Alex, not a bad design. Maybe add a purge valve at the top of that setup on both hot and cold sides. You and Jake are a riot to watch.

[@MuzahirAli1]

We don't often see Alex and Jake together in a video. But when we do, it's super exciting.

[@kenbolsen8295]

The electric water pumps from a prius are 12v 20 amps and move a shit ton of volume with a head of 2 ft. Manifolds on top with reservoir in top

[@DragooseBlaze]

I love the duo, it’s really a is this safe moment every few seconds

[@snowbofr3ak]

PVC to Metal Threaded connections are better made using a bead of silicone over the threads. It's an old plumber's trick. PVC to PVC threaded connections are best made using tape, though.

[@guatemalantomcat]

The video starts with an industrial propane torch already on the table. I knew it was gonna be good.

[@djd1162]

Man, Alex literally has the best job. He gets to build outrageous concoctions, for fun, at the cost of his employer lol.

[@emanuel12345678901]

Alex got it a bit wrong. the 120W on a Peltier is the total power uses. that includes the losses and self-heating. as they are less Tha 30-40% efficient, you will only be able to move like 30-40W but you'll have to cool 150-160W

[@Foxi4Qnet]

Partially correct. The rating is explained in the datasheet - you have to look at QMAX. As for efficiency, you’re only interested in the COP. Your efficiency is dependent on how cold you can keep your hot side - the colder it is, the closer you’ll get to QMAX.

[@mwitters1]

More like this. Alex does the coolest stuff, he's your most knowledgeable guy. You don't have him doing enough cool stuff like this.

[@lw8882]

NGL this thing looks like one of those steel bearing musical machines, but for computers.

[@popytkpisatel]

"but I know you can't look away" , darn it. I literally can't.

[@qm3ster]

Having them all be at least 2 in series would make the flow massively more uniform.

[@firestorm734]

Protip: for cooling big circuits like this you end up having issues with flow sharing due to imbalances in the pressure drops across each flow path. The simple solution is to add way more flow. I recommend the 12V water pump out of the toyota prius: it should provide ample flow for most cooling applications.

[@FuzzFaux]

The Alex and Jake chemistry is unmatched

[@IrisCorven]

Dan's reaction is the most accurate "outsider's perspective" i've ever seen.

[@timm1583]

as someone who has done large scale solar thermal with tons of separate sections with multiple storage tanks i love this hack job!