Better Liquid NITROGEN thread

[CreePinG_DeatH]

For the Curious people who keep posting threads about Liquid Nitrogen:

-It won't work if you want your computer to be functional.
-Read up on every project that has been done before you ask questions about it.
- IT WON'T WORK.... not yet anyway.

And if you still think that I am just full of it, try cooling with Liquid Oxygen and sawdust....

(don't do it without researching first) heh

[Dissolved]

Originally posted by CreePinG_DeatH
For the Curious people who keep posting threads about Liquid Nitrogen:

-It won't work if you want your computer to be functional.
-Read up on every project that has been done before you ask questions about it.
- IT WON'T WORK.... not yet anyway.

And if you still think that I am just full of it, try cooling with Liquid Oxygen and sawdust....

(don't do it without researching first) heh

it does work... But only long enough enough to boot in windows, then ud have to add massive amounts of LN, and id assume you freez and break ur cpu/mobo due to the instence cold..

[Trap]

Its not the cold only problem its the humidity that causes short circuits.If that project is made in completely dry conditions it would work awesome..i think..

[Rikers]

Pentium 4 @ 2.2 GHz - Clocked up to 3.68 GHz w/ Liquid Nitrogen Cooling

http://www.muropaketti.com/artikkelit/cpu/northwood2200/ln2/

(English summary at page bottom)

[Ozzman]

not sure but i think they also used that

http://www6.tomshardware.com/cpu/02q1/020117/index.html

[CreePinG_DeatH]

No No NO... What I meant by not working is being able to keep a constant flow of Liquid Nitrogen in an enclosed case. The extreme cold of LN2 would make for some incredible shrinking and expanding and eventually cracking of the cpu.


Saying it works fine because it was able to post is like saying you can swim in lava.... sure if you jump in you're alive for like a trillionth of a second, but then you're extra crispy.

Hmmm I'm suprised no one tried the LO2 and saw dust hah

[rossd]

You should be able to get pretty much any temperature you choose at any power level you like with LN. You just have to apply it in the right way.

DONT: pour it directly on the core of your CPU.
DO: drip it slowly in a thermostatically controlled fashion onto a copper cold plate.
DO: apply sufficient insulation to avoid condensation of water and liquid oxygen.

So how much you damage your CPU is really up to you.

Regards,
rossd.

[Rikers]

Ahh, I see what you are saying. I guess it wouldn't be too much fun to have to refill the cup with Liquid Nitrogen every 5 minutes. It would get pretty expensive too. :(

[Teacher_Doug]

originally posted by CreePinG_DeatH

Hmmm I'm suprised no one tried the LO2 and saw dust hah

Perhaps they don't have a death wish. Have you ever seen a liquid oxygen explosion. 1 drop of oil, and kablooie :burn:

[Yodums]

Well depends how cool the LN2 is. If its -60 or -70 then it may run but eventually you'll damage your chip surverely but running a chip at -196ºC for like 24 hours will blow the chip to bits.

Yodums

[Teacher_Doug]

This is turning into a re-run of the previous LIN thread. I agree with you about the probability of killing the chip, by thermal contraction and micro-structural distortion, but UserName made the valid point that we won't know until we(or someone who can afford the $) perform a series of experiments.

[JFettig]

i think i got the best ln2 idea!
basicly you hook up a take of ln2 or some other cold liquid under pressure and make a block, probably dome for strength, then put 2 pressure relefes on the block(depends on what pressures it makes) one with a hose of ln2 from the tank to the block and the other into the air ill scetch a pic quick....

[Yodums]

The LN2 I think will freeze the tubing.

Thats why they used a big container in the LN2 project with the P4.

Yodums

[JFettig]

copper or some other metal tubing!
thats what i ment to put on it...

[CreePinG_DeatH]

lol sorry guys but this thread wasn't meant to turn into a full discussion. I was simply stating that it's not practical right now and people should research questions before they ask.

[rossd]

You must be careful when passing any such liquid through a pipe. The liquid is colder than its surroundings, so it will absorb heat and give off gas. The tube must always have a path for the gas to escape upwards, and you need a breather valve at the top of your apparatus.

Metal tubes withstand low temperatures well but they increase this boiling effect (they conduct heat well). Also, you need to surround them with some kind of insulation that can withstand the temperatures without cracking.

Also, don't expect a tube to be at all flexible at those temperatures unless it's some very specialized and expensive cryogenic hose.

I'd suggest mounting your LN container directly over the cooler apparatus, with a lot of insulation.

rossd.

[JFettig]

dude, im not exactly plannin on doing this!
just a great idea!

[Voodoo Rufus]

LN2 is really cool stuff. I love to play around with it in Physics class.

It would sure be neat if Procs could handle this type of cooling for longs periods of time.

Do the new organically based procs have mroe tolerance, or is it a function of the silicon shrinking?

[UserName]

The problem with the shrinking had never been observed. Its just a theory, like aluminum gives off more heat. And bad science to boot!

Expansion and contraction hapens every time you turn on your 'puter, and again every time you play doom.

I have an aquantance at a university who gets LIN for free. He has a PC set up in the LIN Fridge and says it works fine.

There is no problem cooling with LOX either. Just as long as there is no spark.

I thought this (http://www.dwpg.com/content.php?contid=2&artid=76&orgartid=68) was interesting.