1 00:00:00,400 --> 00:00:06,640 milliondoll PC. Our nickname for this 2 00:00:03,600 --> 00:00:10,719 wild nine server cluster with a combined 3 00:00:06,640 --> 00:00:12,719 two pabytes of Kiosia Gen 4 NVD storage 4 00:00:10,719 --> 00:00:18,080 has been causing some serious problems in our server room. Thanks to the 7 to 5 00:00:15,200 --> 00:00:24,480 8,000 watts of heat it kicks out, it got so freaking hot in here that we needed 6 00:00:20,320 --> 00:00:27,439 to cool our lab server room. And even 7 00:00:24,480 --> 00:00:31,199 with the setup we've got now, it's still a little toastier than we'd like it 8 00:00:29,039 --> 00:00:35,760 here. Of course, it is a lot better than it used to be, thanks to our proof of 9 00:00:33,520 --> 00:00:42,320 concept heat exchanger setup that we cobbled together with a pair of APC data 10 00:00:39,040 --> 00:00:44,800 center cooling towers that we found 11 00:00:42,320 --> 00:00:50,879 behind a local data center. In a nutshell, this one grabs heat that gets 12 00:00:48,559 --> 00:00:56,000 thrown out directly out the back of the million-doll PC. Then it pumps that hot 13 00:00:53,680 --> 00:01:00,480 water up here where a second cooling tower yates that heat out into the 14 00:00:58,160 --> 00:01:07,760 warehouse which we would have to pay to heat anyway. Hey, 15 00:01:04,519 --> 00:01:10,159 Alex. The issue is that our proof of 16 00:01:07,760 --> 00:01:15,360 concept here kind of introduced some new problems. For one thing, while this 17 00:01:12,479 --> 00:01:21,200 tower does an ungodly amount of cooling, it also takes up an ungodly amount of 18 00:01:18,080 --> 00:01:24,640 space. It's designed to go in between 19 00:01:21,200 --> 00:01:28,080 racks of servers to chill the air, not 20 00:01:24,640 --> 00:01:30,720 behind them, which is the other problem. 21 00:01:28,080 --> 00:01:37,040 We don't have separate hot and cold aisles in this closet we call a server 22 00:01:32,720 --> 00:01:39,680 room. So, our cardboard duct here is how 23 00:01:37,040 --> 00:01:46,439 we get the hot air to the radiators inside our cooling tower. At best, this 24 00:01:42,799 --> 00:01:49,759 is a phenomenal waste of space and at 25 00:01:46,439 --> 00:01:53,119 worst kind of a fire hazard. Which 26 00:01:49,759 --> 00:01:56,479 raises the question, why all of this 27 00:01:53,119 --> 00:01:58,960 when we could just attach our radiators 28 00:01:56,479 --> 00:02:03,119 directly to the back of the rack? It would not only get us our space back, 29 00:02:01,360 --> 00:02:08,239 but it would probably work though. Oh my god, it's leaking water. Oh Jesus. We've 30 00:02:06,640 --> 00:02:16,640 got all the radiators we could ever need. What could possibly go 31 00:02:12,040 --> 00:02:19,200 wrong? A lot. Just like a lot of segue 32 00:02:16,640 --> 00:02:23,120 to our sponsor, Nexigo. Their Tri Vision Ultra is a 4K projector designed to be 33 00:02:21,120 --> 00:02:26,560 easily set up anywhere thanks to its autoscreen detection and convenient grab 34 00:02:24,800 --> 00:02:29,959 handle. Pick one up today using our link in the description. 35 00:02:36,560 --> 00:02:44,080 With that said, the current setup is kind of working. The filter is 36 00:02:41,440 --> 00:02:49,040 filtering. The purge for the filter is uh please don't open purgeable. Oh my 37 00:02:45,840 --> 00:02:52,160 god. And our auto topup with that uh 38 00:02:49,040 --> 00:02:54,160 toilet float in it. Totally works. It 39 00:02:52,160 --> 00:02:58,959 doesn't leak either actually, which is great. So, we don't need to change 40 00:02:56,400 --> 00:03:04,640 anything major here. But what we are doing today is dealing with this pump. 41 00:03:01,519 --> 00:03:07,519 It is weak sauce and is made of cast 42 00:03:04,640 --> 00:03:14,239 iron, which not ideal in a mixed metal loop, even if you are using corrosion 43 00:03:09,680 --> 00:03:16,879 inhibitors, which we aren't yet. Yet. 44 00:03:14,239 --> 00:03:21,440 Yet. Are we adding that today? No. Oh, god. Jake. Well, once we prove this 45 00:03:18,560 --> 00:03:25,599 setup works, then we might. Um, wait. What are you doing? I'm undoing this so 46 00:03:23,120 --> 00:03:28,239 we can put the new pump in. Have you considered maybe we should like 47 00:03:26,800 --> 00:03:34,640 disconnect it down there so it doesn't just spill water all over everything? 48 00:03:31,879 --> 00:03:38,319 Sure. All right. Oh, Jesus. Well, what did you think was going to happen? 49 00:03:36,400 --> 00:03:41,680 Water, J. You still continue to do the thing I said you shouldn't do. That's 50 00:03:40,080 --> 00:03:45,040 what I I thought maybe you would think about what I said instead of just 51 00:03:43,440 --> 00:03:49,840 continuing to do the thing you shouldn't have done. Okay. There's only an electrical box right down there that it 52 00:03:48,239 --> 00:03:53,760 pours directly into. Oh, not just an electrical box. The electrical box. The 53 00:03:52,159 --> 00:03:58,000 whole electrical room for the building. Yeah, it's down there. Um, now the 54 00:03:56,239 --> 00:04:01,599 flanges I originally ordered for this project finally showed up. Uh, you see 55 00:03:59,760 --> 00:04:05,200 they have a valve on there so you can isolate the pump. Oh, that's downright 56 00:04:03,280 --> 00:04:08,799 useful. That would have been great at a couple minutes ago. Yeah, we could swap 57 00:04:06,799 --> 00:04:12,480 it or we could just stick that one right back where the old one was. Yeah. Okay, 58 00:04:11,040 --> 00:04:18,320 cool. While we're throwing this in is as good a time as I need to talk about the pump upgrade. Not only are we going to 59 00:04:16,079 --> 00:04:23,360 stainless steel from cast iron, but this thing is about a sixth of a horsepower. 60 00:04:21,280 --> 00:04:29,120 So, to put that in context, it'll do about 25 gallons per minute with 10 feet 61 00:04:26,960 --> 00:04:33,479 of head pressure, which is about double what you'd get out of a typical garden 62 00:04:30,720 --> 00:04:38,080 hose. Oh, yeah. There she goes. Now, I was joking in the intro, we 63 00:04:36,160 --> 00:04:42,479 haven't actually cut anything in these towers. And then Justin just informed me 64 00:04:40,320 --> 00:04:47,919 that we can't cut anything in the towers yet without getting the door off, which 65 00:04:43,759 --> 00:04:50,320 is conveniently locked. 66 00:04:47,919 --> 00:04:53,440 This is looking very successful. 10 out of 10. Should we just use a 67 00:04:54,199 --> 00:05:00,320 drill? How does this work? Oh, what is 68 00:04:57,680 --> 00:05:05,280 this? There's a button. Oh my god, there's a button. We are just actually 69 00:05:02,000 --> 00:05:08,280 so stupid. We're so Yeah, we're so 70 00:05:05,280 --> 00:05:08,280 stupid. 71 00:05:13,600 --> 00:05:20,160 Oh my god, they're torques. Why are they Torx? Fortunately for us, you can get 72 00:05:18,240 --> 00:05:23,759 extra screwdriver bit sets like this torque set for the LTP store 73 00:05:24,440 --> 00:05:30,800 screwdriver. Nice. So, these radiators are a little 74 00:05:28,960 --> 00:05:34,400 weird. There's three connections. I'm assuming it's like this is the inlet and 75 00:05:32,800 --> 00:05:37,759 then we have two outlets. And I'm like, okay, let's let's measure these pipes 76 00:05:36,160 --> 00:05:44,880 and I can go buy some of the fittings ahead of time. This is like 3/4 of an 77 00:05:40,320 --> 00:05:48,160 inch on the outside. This is like 7/8. 78 00:05:44,880 --> 00:05:51,240 And this is like 3/4. So I probably need 79 00:05:48,160 --> 00:05:54,199 7/8 and 3/4 copper fittings, right? 80 00:05:51,240 --> 00:06:01,120 Wrong. The copper fittings I need are 5/8 and 3/4. Why? I don't know. Well, it 81 00:05:59,199 --> 00:06:04,319 turns out 5/8 copper pipe is not a type of pipe you use for plumbing. So the 82 00:06:02,639 --> 00:06:07,680 plumbing guy was like, 5/8? Why do you need 5/8? We don't we don't sell that. 83 00:06:06,000 --> 00:06:14,560 You have to go to an HVAC store. That's a refrigeration size. Luckily, I found a 84 00:06:11,759 --> 00:06:19,520 plumbing HVAC store that sold both and they happen to have the fittings that I 85 00:06:16,240 --> 00:06:20,960 need. These are 5/8. And if I look if I 86 00:06:19,520 --> 00:06:27,400 if I measure them with the fancy calipers here, 87 00:06:24,360 --> 00:06:30,479 0.76, and 88 00:06:27,400 --> 00:06:32,479 0.7 675, 772, depending on where you 89 00:06:30,479 --> 00:06:36,560 measure. Nothing a little solder can't fill. Starting with the inlet. Now, if 90 00:06:34,639 --> 00:06:40,479 we look at the fitting here, we've got almost the amount we need. I I can't 91 00:06:38,639 --> 00:06:43,520 make it work over here. So, we're going to leave this solder joint in here and 92 00:06:42,639 --> 00:06:49,039 then we're going to try to put the fitting on the top. I'm hoping we can get like a tiny bit more straight 93 00:06:46,319 --> 00:06:55,440 section. So, to try that, I'm going to heat it up and then Justin's going to 94 00:06:51,680 --> 00:06:55,440 try to bend it. Like, we don't need 95 00:06:56,600 --> 00:07:03,440 much. It's just elongating it. 96 00:07:01,280 --> 00:07:07,720 Like, see, it's just like squished. Oh, no. Probably just made it worse. 97 00:07:05,520 --> 00:07:11,520 Probably. This is definitely This is definitely not 98 00:07:09,680 --> 00:07:16,080 better. It is actually worse. Why don't we just try cutting that off and just 99 00:07:12,960 --> 00:07:19,960 see how it looks? Sure. Sure. You want 100 00:07:16,080 --> 00:07:19,960 to grab a sawzaw? Yeah. 101 00:07:21,880 --> 00:07:28,400 Hey. Yeah. I'm sure it'll fit right on 102 00:07:25,520 --> 00:07:32,400 there. This is not going to leak. There's no way this is going to leak. 103 00:07:30,319 --> 00:07:36,720 Wow. That is That's uh at her there, bud. For real, dude. Look how mint this 104 00:07:35,199 --> 00:07:41,520 is. I don't want to keep doing this. This is making it worse. It's very important to make sure you clean your 105 00:07:39,599 --> 00:07:45,440 definitely not destroyed copper pipe before you solder as otherwise the 106 00:07:43,840 --> 00:07:48,639 solder won't stick. I had a really stupid idea that I think is maybe 107 00:07:47,120 --> 00:07:52,880 actually not that stupid. I was trying to find something that would fit like 108 00:07:50,560 --> 00:07:55,039 the exact or close to radius. And look at 109 00:07:59,560 --> 00:08:04,639 that. A whopping I don't want to think 110 00:08:02,639 --> 00:08:09,000 about how much longer later. We've hammered a socket in which mostly 111 00:08:06,479 --> 00:08:13,919 reformed this one. The other radiator looks almost spot on. This one not 112 00:08:11,759 --> 00:08:17,800 great, but I can at least force a fitting on there now, which means we can 113 00:08:16,800 --> 00:08:22,879 solder it. Will it leak? Probably. But that's a 114 00:08:21,680 --> 00:08:30,360 problem for later, Jake. I'm going to put some flux on here, which will clean 115 00:08:24,800 --> 00:08:30,360 the part up when it's heated up. 116 00:08:33,120 --> 00:08:38,880 Both of our radiators now have fittings soldered onto them and hopefully don't 117 00:08:37,120 --> 00:08:43,200 leak. But that's not something I want to just gamble on. So, I wanted to find a 118 00:08:41,360 --> 00:08:46,560 way that we could leak test it. And I've got this little leak tester, which is 119 00:08:44,880 --> 00:08:51,040 literally just an air pump with a gauge. So, you hook it up, pump it up, and that 120 00:08:49,200 --> 00:08:57,279 gauge will show your pressure. We spray some Windex on there. It's all pumped 121 00:08:53,399 --> 00:08:59,200 up. But, if we look, our solder joint 122 00:08:57,279 --> 00:09:04,600 looks clean. Ignore all the bubbles from the plastic. That's unrelated. 123 00:09:03,360 --> 00:09:10,880 No bubbles. They're not 124 00:09:07,959 --> 00:09:14,399 pretty, but they don't leak. And that's good enough for me. Looks like you guys 125 00:09:12,640 --> 00:09:17,519 already cut this out. Yeah, we tried to find the ones that were the least 126 00:09:15,839 --> 00:09:22,399 disgusting, and it seemed like the top ones were the least corroded. So, we 127 00:09:19,440 --> 00:09:26,160 destroyed two towers. Okay. Well, this looks great. But I do have a question. 128 00:09:24,480 --> 00:09:30,160 Is there a reason that we're salvaging these radiators rather than just using 129 00:09:28,800 --> 00:09:35,600 radiator doors? It's like those are totally a thing, brother. I tried. They 130 00:09:33,680 --> 00:09:39,200 either just like stopped responding to my messages, didn't respond at all in 131 00:09:37,600 --> 00:09:45,279 the first place, or were like, "It will be $60,000." 132 00:09:41,680 --> 00:09:48,000 Oh. And then I remembered we had this. 133 00:09:45,279 --> 00:09:52,000 And this is more fun. Cool. Yeah. Time to build a water door. At least it's 134 00:09:49,600 --> 00:09:56,360 more fun right now. We haven't got to the part where there's problems yet. And 135 00:09:53,920 --> 00:10:00,480 build a water door. I shall. At least in theory. Now I'm 136 00:09:58,959 --> 00:10:03,600 working on how we're going to lay this stuff out. The bottom and the middle are 137 00:10:02,240 --> 00:10:08,959 going to be very easy. We're just going to use these 3/4 NPT to 3/4 ID barbs. So 138 00:10:07,519 --> 00:10:12,080 they'll just twist on. The top connection on each radiator is a little 139 00:10:10,560 --> 00:10:16,560 bit more complicated because we need to connect it to the bottom one. So what 140 00:10:14,560 --> 00:10:23,120 I'm thinking I'm going to do is use one of these T fittings and then a right 141 00:10:19,120 --> 00:10:25,120 angle. We'll use that kind of like this. 142 00:10:23,120 --> 00:10:28,959 And then this guy will go kind of like that. So, we can have this tube come off 143 00:10:27,120 --> 00:10:33,320 and connect to there. And this one's already connected. And then we just have 144 00:10:30,320 --> 00:10:35,279 one feed in for each of our 145 00:10:33,320 --> 00:10:41,200 radiators. It just looks like a normal barb, but spin it. Yeah. Oh. Ooh. It's a 146 00:10:38,399 --> 00:10:46,560 swivel barb. It's exactly what I needed. And it was $11. 147 00:10:43,760 --> 00:10:50,480 Really? Yeah. That's not bad. Green line hose and fitting, baby. They have 148 00:10:47,920 --> 00:10:55,360 everything. Oh my god. And I just ruined them all. That's my job. Yeah. Okay. How 149 00:10:53,519 --> 00:10:59,360 does this help us again? Because the door has to move and we can't just rely 150 00:10:57,200 --> 00:11:04,160 on like a rubber hose bending back and forth. We'd have to leave a ton of extra 151 00:11:01,279 --> 00:11:08,079 to make that work. Got it. No, that's got to go down this way. Okay. What if 152 00:11:05,440 --> 00:11:11,600 that went here and I go in there and then it went going to hang. I mean, I 153 00:11:10,000 --> 00:11:16,079 guess we could do it like down like that maybe. Oh, yeah. That's it's pretty 154 00:11:14,640 --> 00:11:22,360 I don't have a nipple either, so I don't know if we can do that. 155 00:11:17,920 --> 00:11:22,360 Yeah. Don't. I swear to God. 156 00:11:23,040 --> 00:11:28,560 There are large tools here and he is one of them. No, we don't need this. But 157 00:11:27,360 --> 00:11:31,600 that's doing the same thing. Yeah, but it's in a dumb spot, though. Why is it 158 00:11:30,399 --> 00:11:38,000 in a dumb spot? Cuz it's better to just have it all in one place and then we just run tubes everywhere. Why? Cuz it's 159 00:11:34,959 --> 00:11:39,440 easier. It doesn't seem easier. And then 160 00:11:38,000 --> 00:11:42,279 this Why do we need to go to the bottom of this rad to the bottom of the other 161 00:11:41,440 --> 00:11:47,120 rad? Because because let's say the other one 162 00:11:44,560 --> 00:11:50,880 has already been done like Oh, okay. That already has a T on it. Yeah. Well, 163 00:11:49,040 --> 00:11:54,920 wait. Why are you even proposing a new solution when you already solved it 164 00:11:52,320 --> 00:12:00,720 already? I'm trying to tell you this. But you don't listen. 165 00:11:59,120 --> 00:12:05,200 He's giving me a hard time, but he's the one who went to the plumbing store and came back with no nipples. How do you 166 00:12:03,760 --> 00:12:10,959 manage that? Well, I didn't need a nipple because I had this excellent plan that you've now changed. 167 00:12:09,600 --> 00:12:14,639 So, we're going to have our two hoses that come off of the tubing that's in 168 00:12:12,639 --> 00:12:18,800 the building, like the PEX tubing, go to here and here. This will be our outlet. 169 00:12:16,639 --> 00:12:23,279 This is our inlet. From our inlet, it gets split only once, which is nice. 170 00:12:21,760 --> 00:12:29,440 It'll go right to this input, and then a tube will come down over to here. And 171 00:12:26,160 --> 00:12:31,920 then the other side, the outlet, it gets 172 00:12:29,440 --> 00:12:37,760 really freaking awful fast. We'll have our input splits right here into this 173 00:12:34,000 --> 00:12:38,760 guy. And then it comes down into here. 174 00:12:37,760 --> 00:12:44,440 Splits again into this guy in here. Plugs into 175 00:12:41,680 --> 00:12:47,839 here. Splits again down to there. When you're doing something like 176 00:12:46,320 --> 00:12:51,440 this that's a permanent installation. There's a much better type of hose clamp 177 00:12:49,680 --> 00:12:55,279 that are constant pressure ones where it's just like a giant spring. These 178 00:12:53,200 --> 00:12:58,079 ones are fine, but they can loosen up over time, especially in an environment 179 00:12:56,720 --> 00:13:02,959 where there's like a lot of vibration. While Linus works on getting the fittings for our leak testing thing, I 180 00:13:00,880 --> 00:13:06,720 am screwing the radiators in. They luckily have a nice like L channel on 181 00:13:05,200 --> 00:13:10,240 one side which we can just screw directly through the door to hold the 182 00:13:08,639 --> 00:13:15,440 one side and then on the other side we're going to use these mounts that Justin 3D printed along with T-nuts that 183 00:13:13,440 --> 00:13:19,839 are really meant for 8020 but have a really nice flat face which should hold 184 00:13:17,360 --> 00:13:24,800 nicely against the grid and that'll hold the other side. This is a big moment. 185 00:13:22,720 --> 00:13:29,440 I suspect there will be at least one place that is leaking. You know what? 186 00:13:26,959 --> 00:13:33,839 I'll take that bet. I No leaks. Oh, what? I say no leaks for lunch. Uh, I 187 00:13:32,560 --> 00:13:38,880 don't know that I would bet anything on it, but I say no leaks. Really? Yeah, 188 00:13:36,320 --> 00:13:45,279 dude. There's no way. Do you remember last time doing that the the first 189 00:13:42,639 --> 00:13:50,079 setup? Oh my god. I do. Oh, I found a leak. Shoot. Exactly on where the Teflon 190 00:13:48,399 --> 00:13:54,480 tape got all crumpled like I was just saying. Dang it, Jake. We're going to 191 00:13:52,240 --> 00:13:58,560 have to do a lot of removal of things to get at that. Yeah, that's the worst 192 00:13:57,120 --> 00:14:04,320 possible place it could have leaked is right there. That sucks. But hey, at 193 00:14:02,480 --> 00:14:09,440 least we're doing this now and not when it's full of water next to a bunch of 194 00:14:06,000 --> 00:14:10,959 servers. Oh, hold on. What's this? I 195 00:14:09,440 --> 00:14:16,000 think we got another one. Same thing. No, no, no. We got another one. 196 00:14:14,079 --> 00:14:20,399 Upon closer inspection, it appears that when we bent this thing, we made like a 197 00:14:18,240 --> 00:14:26,160 little hairline crack in that very bottom tube, which sucks. I don't really 198 00:14:24,000 --> 00:14:30,880 want to redo all of this at this exact moment. So, I'm going to try and just 199 00:14:28,639 --> 00:14:34,399 put some solder on it and hope that that holds. I already like scotchbrighted the 200 00:14:33,360 --> 00:14:39,360 hell out of it, so it's clean. I'm going to put some flux on. And 201 00:14:37,000 --> 00:14:43,279 now we get to find out if this is going to work. There was like the tiniest 202 00:14:41,440 --> 00:14:46,560 little bubble on this fitting. So, I tightened it a little bit more because 203 00:14:44,639 --> 00:14:52,800 it wasn't quite as in as some of the other ones. And I think we're good. It's 204 00:14:50,480 --> 00:14:57,440 been like 5 minutes already and this dial has not moved at all. And I don't I 205 00:14:55,440 --> 00:15:02,720 like Windexed all the fittings again and I don't see any leaks. We might be okay. 206 00:15:01,440 --> 00:15:07,199 Fast forward a little bit and I've mounted the plastic side bracket 207 00:15:04,560 --> 00:15:14,360 thingies on and we now have a water door which I've been told is just a rack door 208 00:15:09,600 --> 00:15:18,000 with radiators on it. Surprise. Look at 209 00:15:14,360 --> 00:15:20,320 that. It holds. What a monster. Although 210 00:15:18,000 --> 00:15:23,760 with no water in it. Now you might be wondering what are we going to do about 211 00:15:21,519 --> 00:15:27,600 all of this extra air flow? cuz ideally we want any of the air from the servers 212 00:15:25,839 --> 00:15:31,040 to go through the radiators. For now, we're just going to use tape, but in the 213 00:15:29,120 --> 00:15:37,120 future, I'm thinking we could 3D print a little like angled piece kind of like 214 00:15:33,680 --> 00:15:38,639 there and kind of like there to duct the 215 00:15:37,120 --> 00:15:44,160 air into the radiator kind of like a velocity stack 216 00:15:40,440 --> 00:15:46,079 would. Pretty mint, right? Yeah. You 217 00:15:44,160 --> 00:15:49,360 going to cut this off? It's blocking air flow. I You mean you complain about my 218 00:15:48,079 --> 00:15:52,759 tape drop, but then you don't cut that off? Well, this is blocking air flow. 219 00:15:51,759 --> 00:15:58,480 This is sentimental. Oh yeah. 220 00:15:55,160 --> 00:16:00,639 Hi. Oh, okay. I'm really glad I put 221 00:15:58,480 --> 00:16:04,160 valves on that. If all of this hasn't made a ton of sense to you yet, 222 00:16:02,480 --> 00:16:08,880 hopefully it makes a little more sense. Now, we have our rack here. This is the 223 00:16:06,480 --> 00:16:14,320 back. So, back here, all the servers, they're blowing a bunch of 224 00:16:11,000 --> 00:16:16,079 air and it's hot. So, we're going to put 225 00:16:14,320 --> 00:16:20,199 our radiator door here. And hopefully the idea is the water going through it 226 00:16:18,720 --> 00:16:24,720 at like 20ish°ish will catch the heat. And then 227 00:16:23,120 --> 00:16:28,639 once the air goes through it, it should come out colder. And instead of using 228 00:16:26,800 --> 00:16:34,399 that giant tower over here with all the cardboard and stuff, the whole unit only 229 00:16:30,880 --> 00:16:36,399 takes up about this much space. So we 230 00:16:34,399 --> 00:16:42,120 save space. It'll probably work a bit better because it's closer. And um it's 231 00:16:39,759 --> 00:16:47,839 just freaking cool. Hey. Holy dude. Oh, okay. So, 232 00:16:45,440 --> 00:16:53,279 here's a really The air comes through. It is 233 00:16:51,279 --> 00:16:59,040 maybe not strong enough to do this on its own. We might need to add fans. This 234 00:16:56,959 --> 00:17:02,880 is a bit of a crazy concoction, but we've got a 1-in PEX fitting, which is 235 00:17:01,279 --> 00:17:07,039 the same size as this stuff here. It's PEX plastic tubing. And then it gets 236 00:17:05,280 --> 00:17:10,400 reduced down to 3/4, which is the same size as this. And then we've got a 237 00:17:08,480 --> 00:17:14,160 swivel fitting. Kind of one leg there, and then one leg there. And then we'll 238 00:17:12,319 --> 00:17:18,959 run our rubber hose from here to here and hopefully it just works. Previously 239 00:17:17,120 --> 00:17:23,280 we were using fittings called shark bites which are kind of like a easy 240 00:17:21,439 --> 00:17:26,799 solution where they have like O-rings and it's like a self you just quick 241 00:17:25,199 --> 00:17:31,360 disconnect push it in there but I'm switching them up to crimps which use a 242 00:17:28,799 --> 00:17:35,280 metal ring around the pecs and then you crimp them on with a tool and it 243 00:17:33,200 --> 00:17:39,840 compresses the plastic together. In theory a much 244 00:17:36,919 --> 00:17:45,360 more secure connection. We're going to have to find out. A little bit top, but 245 00:17:42,080 --> 00:17:45,360 nothing crazy. And then 246 00:17:47,400 --> 00:17:52,919 open. Ah, it's swiveling a 247 00:17:50,760 --> 00:17:57,360 little. Let's um add a little bit of water. I guess 248 00:17:55,840 --> 00:17:59,880 Jamie turned on the water. So, we're filling 249 00:17:59,880 --> 00:18:05,600 up. So, this is just room temperature 250 00:18:02,880 --> 00:18:09,760 water, right? We're cooling it with the air in the warehouse, which is around 251 00:18:07,440 --> 00:18:15,360 20°. It's so weird to stand behind this and 252 00:18:12,240 --> 00:18:17,280 the air coming off it now to be cool. It 253 00:18:15,360 --> 00:18:20,000 actually feels like colder than the room in here. 254 00:18:20,120 --> 00:18:26,160 Honestly, that's weird. That's so 255 00:18:24,039 --> 00:18:33,280 weird. And then you open it up and you're like, "Oh god, it's so 256 00:18:29,400 --> 00:18:35,520 hot. I suspect we're like cooking inside 257 00:18:33,280 --> 00:18:39,320 there." But then again, the servers are taking in fresh air. 258 00:18:39,679 --> 00:18:47,039 I don't know. Maybe it's fine. Got John here, our test technician 259 00:18:44,799 --> 00:18:51,200 extraordinaire, god of numbers. That's awful, right? Yeah. That's like like 260 00:18:51,320 --> 00:19:00,039 putrid, right? You actually like kind of feel 261 00:18:56,640 --> 00:19:02,039 it's almost a little cold coming off of 262 00:19:00,039 --> 00:19:06,559 it. Like shockingly working. You've seen a little 263 00:19:04,880 --> 00:19:11,360 bit of this, right? Yeah, a little bit. How well do you 264 00:19:08,240 --> 00:19:12,720 think this is going to work? Uh, you 265 00:19:11,360 --> 00:19:18,320 know how hot it was in there with the other cooling tower in there, right? You can feel it already kind of. Yeah. Yeah. 266 00:19:16,160 --> 00:19:22,160 Okay, come on. So, let's let's take a sample. Stand behind the thing. I know 267 00:19:20,880 --> 00:19:28,080 it's weird. There's so much space in here. Awful, right? Like actually 268 00:19:24,799 --> 00:19:28,080 horrible. Stand behind the 269 00:19:29,240 --> 00:19:35,919 thing. Like, it's cool. Oh my god. What? 270 00:19:33,360 --> 00:19:39,960 What did you do? I don't know. Yeah, I know, right? Oh, yeah. Yeah, 271 00:19:40,160 --> 00:19:46,000 we made our little double fan stackeroonis. These are Noctu industrial 272 00:19:43,840 --> 00:19:50,000 30,000 RPM fans. They're called industrial because they're meant for 273 00:19:47,600 --> 00:19:54,720 industrial. This feels industrial, right? I think this is a reasonable use 274 00:19:52,080 --> 00:20:00,720 of these. Um, I don't have enough of them to make this fully filled, but we 275 00:19:58,240 --> 00:20:04,400 do have four sets of double, which is like 276 00:20:01,559 --> 00:20:08,320 honestly barely enough for one radiator, but it'll be better than nothing. I can 277 00:20:06,400 --> 00:20:13,120 definitely feel the air coming through is a touch warm when it comes through 278 00:20:10,720 --> 00:20:18,160 these cuz it's really pulling that air through there super 279 00:20:15,080 --> 00:20:20,720 fast, but it does work. All right, 280 00:20:18,160 --> 00:20:25,360 brother. Isn't this the worst thing ever? Come, come stand there. I Jake, I 281 00:20:23,520 --> 00:20:29,840 can feel it. Stand right there. I need you to endure what I've been enduring. 282 00:20:27,760 --> 00:20:34,640 Oh, you having fun? Yeah, it's really hot. Stay there. Sorry. 283 00:20:32,960 --> 00:20:38,120 Why would you put your armpits like that? Get out of 284 00:20:35,960 --> 00:20:45,280 here. Oh, I'm sorry. Back there. No. 285 00:20:42,679 --> 00:20:51,840 Wow. The door handle even works. Isn't that crazy? Wow. Like what? No way. 286 00:20:49,919 --> 00:20:56,559 That's actually almost unbelievable. whole line. Well, how cool is the 287 00:20:54,400 --> 00:21:01,120 Really? The water's not even that cold, but 288 00:20:58,240 --> 00:21:05,480 Dude, it really takes the like the edge off it. I didn't just shut this. I 289 00:21:03,280 --> 00:21:13,120 forgot that I left it shut for like the last 45 minutes or something. 290 00:21:09,640 --> 00:21:15,919 Wow. That is night and day. And it 291 00:21:13,120 --> 00:21:20,159 doesn't leak. We had zero leaks. Zero leaks now. No, there was no leaks. Oh. 292 00:21:18,240 --> 00:21:24,799 Oh. Other than the leak that you caused earlier, the one that I had to fix, this 293 00:21:23,039 --> 00:21:30,960 is being That is not true. This is being held together with like a millimeter of 294 00:21:27,520 --> 00:21:34,559 solder. I'm actually genuinely like I'm 295 00:21:30,960 --> 00:21:37,120 shocked at how well this works. 296 00:21:34,559 --> 00:21:42,080 And the door even I mean it's jank, but it it does it does function. And look, 297 00:21:39,360 --> 00:21:46,559 you can see our swivels. They swivel. Oh This one doesn't really, but we 298 00:21:44,159 --> 00:21:52,559 we're not talking about that, right? Okay. Yeah, they swivel. They swivel. 299 00:21:49,280 --> 00:21:54,400 Swivel enough. Yeah. Oh, god. Close it. 300 00:21:52,559 --> 00:21:57,840 Yeah, it's really awful, actually. Look at the fans. Yeah. See, you can see 301 00:21:56,640 --> 00:22:03,120 they're really pulling the heat through there. They're really drawing more of that hot air out of there. I think we're 302 00:22:01,039 --> 00:22:07,360 going to need more active assistance for it. Oh, wow. 303 00:22:05,760 --> 00:22:11,720 The door is like, if you find the right spot, it's like 30 35. Yeah. Which is 304 00:22:09,679 --> 00:22:15,120 about what we'd expect. About room temperature, you know. Plus, we can't 305 00:22:13,760 --> 00:22:22,400 dissipate everything out into the warehouse. And then the back of the servers are anywhere from 45 to 55 to 306 00:22:20,240 --> 00:22:26,240 50. Are you going to acknowledge what you just did? So, as you found out, we 307 00:22:24,480 --> 00:22:32,159 need a bigger power supply. Yeah. The little 24 watt one for that Noctua hub 308 00:22:29,200 --> 00:22:36,320 only powers three of those fans safely. Yeah. Um and then I remembered we had 309 00:22:34,000 --> 00:22:43,280 this laying around. This is an HDLEX gallium nitride PC power supply. This is 310 00:22:39,679 --> 00:22:44,880 500 watts with no cooling. Or maybe 311 00:22:43,280 --> 00:22:49,679 there is a little fan there. That looks like a little fan. It might have a fan. 312 00:22:46,880 --> 00:22:53,120 It's small, but it's Yeah, it's pretty impressive to fit 500 watts in this 313 00:22:51,440 --> 00:22:57,600 package. And you can daisy chain them. The main thing is that it's small and it'll be easy to mount to the side of 314 00:22:55,600 --> 00:23:01,360 this thing. And then took a generic power supply cable. We had use some WGO 315 00:22:59,440 --> 00:23:05,360 nuts. And then we have a Molex, which should be good enough to run that many 316 00:23:03,600 --> 00:23:07,840 fans. I think Molex is like 100 watts it can do, right? We'll have a link in the 317 00:23:06,799 --> 00:23:12,320 description for where you can get some WGO nuts and at least some of the other 318 00:23:10,080 --> 00:23:16,679 stuff we showed in this video. No professional company server room would 319 00:23:14,480 --> 00:23:22,320 ever look like this. How boring. Now, what we're going 320 00:23:20,000 --> 00:23:26,240 to do is leave it for about 20 minutes. We've got our AC coming in. It's 321 00:23:24,159 --> 00:23:31,120 apparently fixed. Comes into the front of the rack. The air comes out freaking 322 00:23:28,880 --> 00:23:34,799 hot. We pull as much of the heat away from it as we can. Dump it out into the 323 00:23:33,039 --> 00:23:39,840 warehouse, which this time of year we're paying to heat anyway. And then we see 324 00:23:37,360 --> 00:23:44,559 where we land. We had a few more issues with the air conditioning, which is, but 325 00:23:42,720 --> 00:23:48,960 it seems to be sorted now. And we've had it running with the door shut since 326 00:23:46,400 --> 00:23:52,559 noon, and it's now 400 p.m. And I can see based on the chart that everything 327 00:23:50,400 --> 00:23:56,240 does look to be very heat soaked. If we look at our EcoB thermostat, which is 328 00:23:54,799 --> 00:24:02,559 what's controlling the air conditioning specifically, we can see it's pretty 329 00:23:58,240 --> 00:24:05,440 much settled off from like 29.9 to 30 330 00:24:02,559 --> 00:24:09,840 12° C, which is technically speaking a degree or two lower than we were at 331 00:24:06,960 --> 00:24:15,360 before, which is uh great. I was just happy that we had all of the space back, 332 00:24:13,039 --> 00:24:18,799 but um to also get a bit of a performance improvement is awesome. And 333 00:24:17,120 --> 00:24:24,240 especially once we put the cooling tower we took out of the server room up on the mezzanine. I'm hoping that we can get 334 00:24:21,840 --> 00:24:31,279 even better results. Let's go take a look with the thermal camera. Wow, it is 335 00:24:27,880 --> 00:24:33,840 definitely still warm on this side. Look 336 00:24:31,279 --> 00:24:42,159 at that. You can see the gradient on the rack. Like the front of the rack 337 00:24:37,080 --> 00:24:44,880 38°, back of the rack 50°. Woo! She's 338 00:24:42,159 --> 00:24:48,000 cooking. I added a few more fans cuz it seemed like a good idea. And to be 339 00:24:46,480 --> 00:24:53,039 honest, I'm probably going to add a few more even. But looking at the 340 00:24:51,159 --> 00:24:58,080 radiator. Oh, you know what I want to see is the hoses. So that is our input. 341 00:24:56,080 --> 00:25:05,600 It looks like the outer temperature of it at least is 342 00:24:59,559 --> 00:25:07,000 around 34° and then our output 36°. Not 343 00:25:05,600 --> 00:25:10,760 a great way to measure the water temperature, but it does give us some 344 00:25:09,200 --> 00:25:17,279 idea. That was interesting. 34.4 345 00:25:13,080 --> 00:25:18,120 four and 36. It's interesting cuz you 346 00:25:17,279 --> 00:25:24,240 can feel I can feel the heat coming through 347 00:25:22,080 --> 00:25:28,400 with the fans, but then the air that comes through in between where the fans 348 00:25:25,919 --> 00:25:33,480 are is cool. Let's try to crack this open a little bit on the back of the 349 00:25:30,799 --> 00:25:39,520 machines. It's still around 50°. Anyways, it seems like the 350 00:25:36,640 --> 00:25:43,760 servers inside, despite this being a bit warmer than it was before, aren't doing 351 00:25:41,600 --> 00:25:47,640 too bad. Felt a little crazy when it was just like an idea, but now to actually 352 00:25:46,000 --> 00:25:52,240 see it working in practice, I'm stoked. Just like you 353 00:25:50,559 --> 00:25:56,559 should be stoked about our sponsor, Nexigo. 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