Dez3rt.Eagle
Limp Gawd
- Joined
- May 18, 2007
- Messages
- 135
wow.. people are getting creative with cooling.
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Serge84 said:Liquid nitrogen should not be taken lightly. Touch it, and you lose a finger. Poor it wrong and you can kiss the mobo and floor good bye. Liquid Nitrogen exposed to air and released in its liquid state will make fast work of super freezing anything and turn it into very brittle parts. Most normal matter will shatter when this stuff touches it. Its so cold it would shatter a person like a bullet to glass in only a moment.
LN isn't THAT dangerous. Sure, you should be careful with using it. On the other hand, I also used to take it home with me for fun at parties.... and occasionally have LN fights at work. Yeah.... also to those talking about getting down to 0 K, I don't know why this would even be an issue, since it's impossible to reach absolute zero. The closest you could practically get (and this quite expensive and not too practical at that) would be to have a two stage cooling system with liquid helium providing the primary cooling and the liquid helium cooled by liquid nitrogen (the way they do it for NMRs). This will get you to about 4 K.
I lol'd at this one. So not true at all. Liquid nitrogen is very cold, but it also has a very low latent heat, which means that it transfers heat slowly. It takes a significant amount of time (10-15 seconds at least) for LN to cool something to it's own temperature. You can splash some on your skin with absolutely no ill effects. And it most certainly would not ruin any floor or motherboard, pretty much no matter what.
i beg to differ. I worked in a factory when i was younger that used liquid nitrogen. You do not want it to contact your skin at all. It cause's what is almost like a burn. But oppisite because it is cold. We always had to wear insulted gloves that protect against extreme cold when handling it.
http://stores.biochem.uiowa.edu/Pages/ln2msds.htm
If it doesn't hurt your skin please verify your information.
So what are safetly emergency procedures, "IF" you touched Liquid Nitrogen or it ends up on your bare skin???
Guys, my Chemistry teacher in High School brought some LN2 for a classroom demonstration. Yes you do need to take the utmost of care (my teacher wore some hefty gloves) but at the end he let us touch it. It was very brief but I didn't loose a finger. But it sure did burn like hell for a split second.
How about this?
LN2 > Argon > Methane > Ethylene > R23 > R134A > Pelt > Chiller > Water > Air
The ultimate 10-stage cooling system!
It's part of the "ultimate system" that I want to build someday.
At absolute zero, elements don't necessarily "freeze". At absolute zero, I highly doubt there will be any vapors, but you can possiby still have elements in the liquid phase.
Well, "freeze" in a non-literal sense is technically appropriate since all known substances will cease atomic-scale vibrations. In other words, at the smallest level possible, everything will stop moving. Well, in theory. Absolute zero has never actually been obtained - ever.
forget your drama, toss a few dry ice bricks in your case and call it done.
epic win.
wow...
"
7% scored higher (more nerdy),
0% scored the same, and
93% scored lower (less nerdy).
What does this mean? Your nerdiness is:
Supreme Nerd. Apply for a professorship at MIT now!!!.
"
I cant even get into UBC... don't have a 2nd language, bombed French 8, scraped through french 9, then bomb japanese 3 years in a row and left with nothing but a grade 9 language class which gets me nothing. Now im in the crappy transfer program at langara :'(
93%? really? jeez... I put other for the IE question because I use IE8, guess thats cheating, and my only biohazzard sign is the one on my 28 Weeks later poster, guess that doesnt count either. Also I've never seen a pic of Newton so old. Plan on going into chemical engineering btw (or engineering chemistry, whichever one is the one where you work with the chemicals rather than their production facilities) this is intresting stuff.
epic win.
wow...
"
7% scored higher (more nerdy),
0% scored the same, and
93% scored lower (less nerdy).
What does this mean? Your nerdiness is:
Supreme Nerd. Apply for a professorship at MIT now!!!.
"
I cant even get into UBC... don't have a 2nd language, bombed French 8, scraped through french 9, then bomb japanese 3 years in a row and left with nothing but a grade 9 language class which gets me nothing. Now im in the crappy transfer program at langara :'(
93%? really? jeez... I put other for the IE question because I use IE8, guess thats cheating, and my only biohazzard sign is the one on my 28 Weeks later poster, guess that doesnt count either. Also I've never seen a pic of Newton so old. Plan on going into chemical engineering btw (or engineering chemistry, whichever one is the one where you work with the chemicals rather than their production facilities) this is intresting stuff.
epic win.
wow...
"
7% scored higher (more nerdy),
0% scored the same, and
93% scored lower (less nerdy).
What does this mean? Your nerdiness is:
Supreme Nerd. Apply for a professorship at MIT now!!!.
"
I cant even get into UBC... don't have a 2nd language, bombed French 8, scraped through french 9, then bomb japanese 3 years in a row and left with nothing but a grade 9 language class which gets me nothing. Now im in the crappy transfer program at langara :'(
93%? really? jeez... I put other for the IE question because I use IE8, guess thats cheating, and my only biohazzard sign is the one on my 28 Weeks later poster, guess that doesnt count either. Also I've never seen a pic of Newton so old. Plan on going into chemical engineering btw (or engineering chemistry, whichever one is the one where you work with the chemicals rather than their production facilities) this is intresting stuff.
OK.......lols.......
I want to turn a fridge into a phase changing cooling system.....anybody want to help me to where I should start first?
You serz? Walmart selling dry ice? Isn;t that not permitted for a supermarket to sell things like that since its like dangerous or something?
BTW..I don't have a walmart here.....I'm in Australia....the state where I live in doesn't have a walmart!
You really sure its dry ice?
Coz my local petrol statios and liquer stores have a huge freezer that stores heaps of ice cubes in bags for freezing purposes and you have to be over 18! ?