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Preparing for some -30c fun.

post #1 of 18
Thread Starter 
To put it short, I'm moving back to Nunavut (from Manitoba) for a short time. In that short time, I'm going to see -30c and I'll have some money to have some fun..

What I've decided to do is see how high I can get a 2500k <12hr prime stable. Now, I've got an XSPC RASA RS240 kit and a test bench in my garage. I've also got an old LCD monitor I can risk burning out.

What else do you think I'll need? What should I use in the loop? Distilled water is likely to freeze. Maybe.. Vodka? lol
I'll probably use a fan to carry any lingering heat away from the VRM heatsinks.

Also, the cold here isn't very humid. the great majority of the moisture freezes and falls to the ground at about -25c

EDIT: I also plan to pick up some temperature probes to put in the loop + I have an HD camera to record it.
Edited by Dirtyworks - 10/19/11 at 3:48am
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post #2 of 18
Condensation won't be a problem, that's only an issue when components are BELOW room temp. Also, I have seen people run things like Mineral Turpentine and Methylated spirits in low temp loops. Alcohol and water will result in a slush unfortunately, but a higher ratio of ethylene glycol to water should result in a mixture that will stay liquid at those temps.
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post #3 of 18
70% Prestone/30% Distilled Water
longlife_extended_coolant.png
Edited by jlells01 - 10/19/11 at 3:56am
post #4 of 18
Thread Starter 
I was thinking straight Vodka - probably triple distilled smirnoff. Its the cleanest and most thin liquid I can think of that won't freeze at the temps I'm thinking of.

EDIT: The problemt with automotive anti-freeze IS the glycol - its thick enough to gum up the waterblock after +12 hours.

EDIT 2: How about a bigger res? Would a very highly clocked 2500k be able to warm 330ct over 0c even at -30c? I assume a larger res would ward that off some.
Edited by Dirtyworks - 10/19/11 at 3:57am
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post #5 of 18
a pump that can handle the cold (plastic is prone to break at such temps), and make sure you insulate the harddrive because any convential drive won't cope with -30c

as for the liquid ... guess you'll need some sort of anti-freeze (mixture). I'd look for some chiller setups/how-to's smile.gif
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post #6 of 18
Straight vodka wont work, it's still only 40% alcohol and almost 60% water... The water will crystalise and turn into a thick slurry. If you were going to use an alcohol based solution it would have to be almost 100% since alcohol separates from water at low temperatures/
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post #7 of 18
The alcohol will damage any acrylic and rubber in your loop, your pump won't take too kindly to pumping alcohol.
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post #8 of 18
Quote:
Originally Posted by Dirtyworks;15365820 
EDIT: The problemt with automotive anti-freeze IS the glycol - its thick enough to gum up the waterblock after +12 hours

You realize that pre-filled units (Corsair) come with a propylene glycol mixture, right?
post #9 of 18
Thread Starter 
Hmmm. I have a spare SSD I'm not using, which I was planning to use anyway. I'm aware a spinning HDD wouldn't deal with extreme cold very well.

The problem with 100% alcohol is that its hard to get here. Any other idea's for a coolant?Also, should I pick up some sugical tubing? I assume it would remain much more pliable than any standard tubing for a loop.

EDIT: I didnt know prefilled units come with a glycol solution.. however, how high is the water:glycol ratio? I assume its low enough to not be very thick at room temperature.. things change at -30 - I'd have to use a much higher ratio and it would becomme much thicker in the cold.
Edited by Dirtyworks - 10/19/11 at 4:06am
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post #10 of 18
Quote:
Originally Posted by jlells01;15365804 
70% Prestone/30% Distilled Water
longlife_extended_coolant.png

^this
 
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