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Mineral oil discussion

post #1 of 9
Thread Starter 
Ok so i was sittin here thinking about doing an immersion build. I've been researching it for a very long time and not one time have i found the answer to this question.

If i super cool standard mineral oil, what is the temperature at which the chemical starts to deteriorate/degrade?

i don't mean the freezing point here. I'm talking way past freezing point (unless that's the point at which it happens)

ex.
if i had a device that i could use to make anything it touches as cold as i want it, at what temperature would mineral oil start to break down?
post #2 of 9
-30C(-22F) is listed as the freezing point for mineral oil. Due to viscosity (how thick the fluid is, basically), however, it's lowest useful temperature is considered to be 10C (50F).



Read more: http://wiki.answers.com/Q/What_is_th...#ixzz1XTmcyCoi
post #3 of 9
Quote:
Originally Posted by Hazzeedayz View Post
Ok so i was sittin here thinking about doing an immersion build. I've been researching it for a very long time and not one time have i found the answer to this question.

If i super cool standard mineral oil, what is the temperature at which the chemical starts to deteriorate/degrade?

i don't mean the freezing point here. I'm talking way past freezing point (unless that's the point at which it happens)

ex.
if i had a device that i could use to make anything it touches as cold as i want it, at what temperature would mineral oil start to break down?
If you supercool a liquid its very sensitive to any sort of movement or foreign particle that could cause a nucleation of crystals (IE ice or frozen mineral oil).


If a piece of dust fell into a supercooled mineral oil immersion you could quickly end up destroying all of your parts and freezing them into a solid block of mineral oil. Also, even at supercooled temperatures you would want to move the liquid around a bit to promote heat dissipation. This would be difficult to do using fans or anything that cause movement - you would risk solidifying it from the movement and vibrations alone.

Cool idea though, if there was some way to contain it completely and isolate it from any movement, you might be onto something.
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post #4 of 9
Thread Starter 
Quote:
Originally Posted by WORLDs View Post
If you supercool a liquid its very sensitive to any sort of movement or foreign particle that could cause a nucleation of crystals (IE ice or frozen mineral oil).


If a piece of dust fell into a supercooled mineral oil immersion you could quickly end up destroying all of your parts and freezing them into a solid block of mineral oil. Also, even at supercooled temperatures you would want to move the liquid around a bit to promote heat dissipation. This would be difficult to do using fans or anything that cause movement - you would risk solidifying it from the movement and vibrations alone.

Cool idea though, if there was some way to contain it completely and isolate it from any movement, you might be onto something.

yea that will be the main problem i will be faced with. but i've got a few tricks up my sleeve so hopefully i can get this thing going and post a build thread on it
post #5 of 9
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post #6 of 9
Thread Starter 
OK on to the next question.
i'm about to purchase some mineral oil and i am unsure on which brand or type to get.
Does anyone have any experience using a specific type of oil?
I'd love to hear your inputs
post #7 of 9
What are you using tho cool? Why mineral oil, I haven't done the research yet but I'm sure 3M make some chemical that can do this.
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post #8 of 9
Thread Starter 
yes, 3M makes a liquid called fuorinert.
the problem is, the stuff is $400 per 1000ml and is a bit hard to acquire.
it'll be hard to fill a 10+ gallon tank with that stuff.

mineral oil on the other hand goes for around $15 a gallon...much more affordable.

once i get the initial tests going and i see if this has potential or not, i will most likely move to using the Fluorinert fc-770 which i can bring down to temps of -127.
Most likely i will try another fluorinert fluid afterwards as well to see if i can push even further.
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