This Cooler DRAWS 545W!!? Bad Cooling Ideas #2

Everything goes right - Linus: "See I told you!" Everything goes wrong - Linus: "See I told you!"

Alex: pays thousands of dollars towards an engineering degree Also Alex: Chop chop the bottom bit

I love Alex's face when Linus is speaking to the camera. The face of a kid who's waiting for their parent to finish talking with their friend.

Your peltie uses 900W to transfer heat. That means you have to be able to cool at least that amount with the water block. If you don't, both side start to heat.

+2 points for the solidworks flow demo and real engineering talk. More of that please tyvm.

You'd be better off putting the TEC cooling on the radiator to get lower than ambient, then you'd need another water cooler just to cool the TEC plate. You could get the water as cold as you want and not even worry about condensation.

I like to think that Linus knows all of his sponsors off by heart and all he needs is someone to tell him what the sponsors is.

16:10 their funnel has a label saying "FUNNEL"

I did my HS physics project on TECs and I found that one of the biggest problems with them is that their faces are not flat at all and since they are ceramic they are difficult to flatten so I had to compensate with globs of thermal paste and even then it was bad plus hot side temps matter almost as much as cold side since a high delta caused by insufficient cooling leads to heat leaking to the cold side lowering efficiency. Future improvement could be done by flattening the TEC with an end-mill or facing on a lathe, stacking TECs, and direct contact vs an additional copper plate(that slot for the thermal-couple wasn't helping anything.

Linus: "It was a learning experience" Alex: "Yeah" Linus: "About listening to your boss next time" . . . . . . Alex: "WHAT?"

18:42 My favorite part of the video, it was totally necessary!

May I suggest you try using a logic level mosfet next time instead of a solid state relay, Alex? Because as you probably found out during the making of this video, you cannot use a solid state relay to switch DC 🙄🤣 They can only be used to switch AC waveforms that cross through zero. A solid state relay (henceforth SSR) is nothing more than a triac with an additional zero crossing detection circuit. Although they are very different, the triac component in a SSR performs a function similar to that of a mosfet; where, for example, an active logic signal causes a current to flow. A very important difference between a mosfet and a triac is that once latched (and conductive) the triac cannot unlatch (and return to a state of isolation) unless the AC waveform crosses through zero, where as a mosfet can unlatch at will. This is the function of the zero crossing detection circuit; all it does is ensure that if the triacs logic signal becomes active somewhere halfway through the AC waveform, the actual latching of the triac is delayed until the waveform once again crosses through zero. Latching at any other point during the AC waveform has the serious potential of resulting in an enormous (potentially triac destroying) current surge immediately upon latching. Unless you're lucky, and the triac happens to latch precisely at the zero crossing point of the AC waveform, after which the current is allowed to rise gradually with the voltage. [Important note: just as a triac is unsuitable for switching DC, a mosfet is unsuitable for switching AC!] I hope this clears things up a bit 😁 I know the chance you'll read this is so low I might as well be talking to a wall, but perhaps there is a slight chance another soul will come and stumble across this information and find it useful somehow. Who knows, they might potentially even learn something 😊 (If I made a mistake please correct me in a reply to this comment in a friendly manner please and I'll happily modify this comment!)

"There's no way we can just finish like this" [HARD CUT TO SPONSORS]

"There's no way we can just finish like this" *Finishes just like this

Interesting. I'd often wondered about using a Peltier for PC cooling, but not directly on the CPU. My thought was to use it more passively, in conjunction with a fan at the front or rear of the case to cool the air flowing into the case by 5 or 10 degrees while drawing only minimal power. The idea being that if the air being supplied to your standard air- or water-based CPU cooling rig is slightly cooler than ambient, you would see some increase in the performance of your cooling rig overall. Kind of like keeping servers in an air conditioned room, but in this case using a little modular box on the back of the case to create the AC effect. It would be interesting to hear your thoughts on this, Linus.

"award winning templates" I 100% want to go to the awards ceremony for best web developing templates.

Forget the thermoelectric effect. Hook that sucker up to the compressor on an actual AC unit.

Why not cool the water instead of the processor with a bunch of peltiers?

Have you never heard of the 437w Arctic Web TEC? I ran one for years on my C2Q9300 (and still have it). Used a heater core for a radiator with an electric car radiator fan running on 5v to cool it. Fed the 24v peltier with ~15v and got a below-freezing idle temp, with about 15C full-load temp with a 1Ghz overclock. Insulated the motherboard around the CPU (both front and back) as well as coating it with dielectric grease to protect the board from condensation.

Instead of trying to cool with the peltier directly you should try to use a standard water cooled loop setup but after the water has cooled in the radiator it should pass true the peltier then and get cooled to ambient or even sub ambient.