ANy good ideas for cooling?

[Hellmund]

This is a brainstorming channel so let's hear you ideas.
I got a couple of average house fans blowing right in and I removerd unnecessary panels to inscrease airflow.I'm planning on building a waterjacket.
Anty got any good alternate ideas or new inventions worth trying.
Hellmund

[user0005]

Have you watched the Simpson's episode when Homer is trying to buy a new car and the mob wanted him death and they shot at Homer but missed? Well they made holes on the car and Homer ask what they were and the dealer said speed holes, so Homer goes back home and start putting holes in his car. Does this give you an idea? What I'm trying to say is try having a ventilating system, cool air pumps in and air thats warm/hot gets pumped out. Also your case shouldn't be open all the time, dust gets in and problems may occur. Oh yeah, I tried this once, I had 3 small fans in a row and made a holder out of the drive bay cover and used the drive bay as a air intake to cool the inside. Hope I gave some visions.

user

[Hellmund]

I had the same idea.I built a larger fan into the drive bay instead of 3 smaller computer fans.It's 5X4inch.I got 2 exhaust fans build into one sidepanel of the case. However even if the case was off the fans would suck in dust anyway.
One idea I was think was that instead of using water in the water jacket(which could be potential more dangerous than overheating) you could use a gas or gel.Are there any gases that are always cold.It may be a little bit of overkill but liquid nitrogen is always under freezing.I know they use it around superconducters. Pumping that through a tube past a cpu ought to cool her downb quicksmart.It'd freeze the mobo if it leaked but I doubt it'd short it out and destroy it like water.
Hellmund

[barry glisson]

If you have central a/c just duct the outlet from the ceiling to the air intake at the bottom front of the case.you can do the same with a window unit only use about 1/2 of the output.aluminum flashing and dryer vent hose is cheap and easy to put together with pop rivets.this should drop the case temp to near 20 deg. f below ambient,depending on the humidity.that is about all a typical a/c is supposed to do. hope this helps barry

[wyvrn]

Try putting your intake fans at the front bottom location, and an outtake near or above your cpu. Heat will rise from bottom to top, front to back. I would use at least an 80mm for the intake and at least one 60-80mm for outtake. You might have to cut a hole or drill holes depending on your case config. For $20 at Radio Shack you can get a neat black outdoor/indoor thermometer that you can use to monitor case temps, I just ran the probe on the inside and leave the therm. on my desk. If you find you are not getting enough cooling, you may need to tie up cables out of the way or add another out fan. I have to say that buying the right case is the biggest part of successfully cooling your system. If you can afford it, get a full tower that comes pre-made with several strategically placed fan bays to save time. Or you can drill out your own holes and even paint your case if you want.

[tijeff]

I've desing my own water cooling device and i'm interesting in pushing my k6-2 350 furter than 440 mhz or a least stable at 472
And as i notice on the http://www.comppwizz.com/
lapping is very important
but as Scott's show-it on his shearch with is home made cupper cap and whit all the picture off the opened k6-2 presented there
I'm wondering if the k6-2 can suport a Water flow DIRECTLY on the inside chip !!!!!!!

This is a little bit crasy I admit!!!! but the heat coduction will be MUCH MORE BETTER than anything else !!!!!!!!

or at lest an alcool flow since alcool dont conduct electricity .... But alcholl stinck so meaby oil OR ANYTHING that don't conduct electricity !!!!

What am asking now is the opinion of anybody that have a better picture of the inside of this chip. Or the opinion of anybudy that actually own such and opened fuctionnal chip

[Konan555]

OK, here's a wild one.

Take a section copper pole and engineer it to bridge accross from your CPU to the opposite side of the case (and through your case to it pokes out the other side. Then attach a large aluminium plated copper sheet (on the oputside) the then end of the pole. With pure enough metals this *Should* hold your CPU at room temp.

[Hellmund]

I doubt that'd work
THe copper would absorb enough heat from the cpu to heat the whole rod up and then it wouldn't be kept at room temp.What I set up was a larger heatsink and fan on both the CPU and Vidcard chip.I've got a tower case with side panels so I took out the panels,rigged new panels and fitted them with exhaust fans reversed to blow in.My power supply fan blows out and I've got another large fan blowing out in the drive bays.My celeron400@540 and TNT2M64@160/145(instead of 100/110) stay at around 20-25c.
My only concern is if the amount of dust that will most likely be sucked in will damage the computer?Would some thin salon mesh or other thin mesh reduce dustif it's placed in front of the intake fans?
Hellmund

[akaBruno]

Hellmund:

I replaced my side panel w/ a furnace filter, that I cut to fit. I used the leftover material to cover the open bays. I placed one 80mm fan on stilts blowing up from the bottom, w/ the pwr. supply blowing out at the top. If needed on hot days I have a floor fan that blows directly into the case.
It was simple enough and it solved my problems.
Bruno

[Konan555]

Hellmund:

Missing my point a bit, erm I'll try and clarify what I ment.

The copper rod is to conduct the heat, It's ment to heat up quickly, that's why I chose copper.

The copper rod runns to the outside of the case via a hole cut in the side (the rod is solid so no dust is getting in)

There's then a large plate on the outside of the case (about the same area as a side pannel). This plate is aluminium coated since aluminium is a good radiator (silver would be better but a bit pricey).

No fans, no dudst just a copper rod and a large chunk of metal.

[Hellmund]

I understand what you meant.It's like putting a spoon in soup so the heat has a better outlet so it cools quicker.What I mean is that the the CPU to the outside case is about 3inches.The CPU isn't hot enough to heat 3inches of it so the exposed part of the copper won't get warm so it won't cool the cpu.The idea is right but I don't think it'll apply to this situation.But try it and prove me wrong if you.TRUST ME,I know I ain't perfect by a long shot.
Hellmund

[Axel]

There was a terrific article posted on this board late last year about a water CPU cooling unit. I tried searching the archives for it, but couldn't locate it . Basically, instead of a fan, the person made a tiny copper liquid cooled plate that seated on the CPU heat sink plate - he fed tubes from this to a pump and into an old car heater coil radiator which he then cooled. He actually used anti-freeze for this thing - he had diagrams and pictures - it looked great but made me nervous putting fluid through my CPU - They used to do that for telephone switches in the late 80's , but it didn't last - too many serious safety and maintenance concerns to make it work for long.

For me - I simply buy an oversized full size case and have a total of 6 fans in my latest system build-

Also - I didn't save on cable ties to get the ribbon and power cables out of the way - they are the worst for obstructing air-flow through a CPU. - pull in air from near the bottom of the case where it is typically coolest in the room and blow it out at the top.

About putting a central AC duct right into the CPU - that person OBVIOUSLY never had his air ducts cleaned - I wouldn't do it without an AWESOME filter between the duct and the CPU - you think you have dust bunnies in there now - try the AC thing without a filter - not me - thanks - no....

I've also seen people attaching spare heat sinks with drops of super glue in the corners and thermal paste in the middle - to high speed hard drives - you could add a fan here.

People are also adding heat sinks and fans to their main I/O chip and their video cards to cool them directly - good idea if you leave the system on all of the time, but overkill for the average user these days.

And for those with pets and/or kids, there's always drilling holes in the CPU case - if you do this - buy some canned air and blow out the dust every 2 months or so.

[CMonster]

Alas - my 15 minutes are up....

I had a liquid cooling experiment reviewd graciously by Joel Kleppinger on Sysopt.com, but the URL appears to be gone now. There have been many improvements since the last project. I do not normally use liquid cooling - not as a permanent cooling solution - but I continue to experiment at pushing the limits of CPU performance and will use liquid cooling as I see fit.

No liquid ever actually touched my internal components, including the CPU.

[This message has been edited by CMonster (edited 05-04-2000).]

[This message has been edited by CMonster (edited 05-04-2000).]

[barry glisson]

if you change the filtr in your return air line like you are supposed to you will not have dust bunnies,your evaporator will last longer than a year. i recieved my universal certification and automotive cert. in 1996. my son bet me $50.00 i couldnt pass the test. i outscored him and he graduated with an as in hvac. barry

[blubomber]

How about this.....go out and buy one of those small fridges that are used in offices and stuff, or one just big enough to fit your computer tower in and put it in there? Keep it at its lowest temp, and maybe drill holes in the side to run the cables through but use some weather paste to keep the cold from getting out.

Think it might work??

[Konan555]

Yep' it works.

I've seen a web-site where somone attached the CPU directly to the evaperator - cold.

BTW Hellmund - the idea of copper is that it's an excellent conductor of heat so it WILL heat up quickly and carry the heat to the aluminium plate which isn't such a good conductor but a good radiator.

[Hellmund]

This may seem like way overkill but I got a mate who does work at a chemists and he said he can get Liquid nitrogen.If you pumped that through a strong line like they do around superconducters I think you would only be limited by what it could do.Seeing as a computers only moving part is the hardrive then it shouldn't matter how cold it is.I'm not really seriously considering doing it but it's an idea.
Hellmund

[Paul V]

Yes, but you better have pipes made for HIGH pressures -- as what will happen is you will biol the liquid nitrogen. Considering as a liquid it is hundreds of times denser than it is at atmospheric pressures as a gas... it will exert LOTS of pressure trying to expand. The good point is that the pressure on the liquid will keep it from boiling further... But it can be BAD if you blew up your computer. A physics prof made a liquid nitrogen cannon and fired a rubber stopper across an entire lecture hall (~450 seating, so you get an idea of the size). Not only did the stopper blast apart on impact, it dented the plaster wall.

Also, there is such a thing as too cool. Liquid N2 may or may not be too cold for good operation. The problem is that semiconductors won't conduct if they get too cold, has to do with electron/hole mobility being reduced or something, I think.

[Konan555]

Don't forget your chip probably has a minimum operating tempreature!

A Transisters gain is dependent on it's tempreature.