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Chilling water below zero? is it doable? - Page 2

post #11 of 58
Quote:
Originally Posted by ericld View Post

It is easier than that. Search Craigslist for a water fountain. These are already designed to chill water. Or you could get a fish tank water chiller and set up a 10gal fish tank as your reservoir.

http://norfolk.craigslist.org/mat/3585024837.html

http://www.marinedepot.com/AquaEuroUSA_Max_Chill_Aquarium_Chiller_1_4_HP_Less_with_a_Built_In_Controller-AquaEuroUSA-ED1151-FICHINQCBC-vi.html

Can't be used for long runs though. The chiller will cool down your reservoir but can not keep load temps at bay when stressing. You get around a hour or two for testing with that method.
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post #12 of 58
Quote:
Originally Posted by ericld View Post

It is easier than that. Search Craigslist for a water fountain. These are already designed to chill water. Or you could get a fish tank water chiller and set up a 10gal fish tank as your reservoir.

http://norfolk.craigslist.org/mat/3585024837.html

http://www.marinedepot.com/AquaEuroUSA_Max_Chill_Aquarium_Chiller_1_4_HP_Less_with_a_Built_In_Controller-AquaEuroUSA-ED1151-FICHINQCBC-vi.html

Does anybody actually read first posts anymore? Australia mate ... no craigslist here ... and an aquarium chiller would have no hope of keeping up with the heat of an Australian summer day.
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post #13 of 58
It is possible without chilling... but It is exspencive. you might however be able to use more cost effective fans.

]http://www.youtube.com/watch?v=VUbpb23yTK8&feature=share&list=LLffH1JNlSjE46ip7i7bl9Dw
post #14 of 58
Quote:
Originally Posted by Jakusonfire View Post

Does anybody actually read first posts anymore? Australia mate ... no craigslist here ... and an aquarium chiller would have no hope of keeping up with the heat of an Australian summer day.

What, no CL in the Great Down Under. What is the world coming to. rolleyes.gif Thought you had something like that there. I still think that chilling a 10gal fish tank and insulating it will be your easiest route. You just have to find the right chiller for it and there are products you can use to keep the water from freezing. Just the action of circulating water will allow you to get it below freezing without solidifying.
post #15 of 58
I suggest watching the video I posted and think of the possibilities.
post #16 of 58
Thread Starter 
Quote:
Originally Posted by BadDad62 View Post

You could kill two birds with one stone like this, Not minus temps but mid 20s to low 30s.



Not entirely sure that would work.
Quote:
Originally Posted by Matt26LFC View Post

Do you not have things like this available to you in Oz?

We can get Aquarium chillers in australia yes, Not sure we can get that exact model but we can get them.
Quote:
It is easier than that. Search Craigslist for a water fountain. These are already designed to chill water. Or you could get a fish tank water chiller and set up a 10gal fish tank as your reservoir.
I'm in australia we don't have craigslist as far as i know, Never heard of it here, WE have ebay, Quokka, gumtree...
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post #17 of 58
again the method I mentioned was -7C to -19C and that was only on a 2 fan rad.
post #18 of 58
Doesn't adding salt lower the temperature at which water freezes by a couple degrees? Not that I would want to put salt in my loop, but still.
post #19 of 58
Look into Hailea chillers. They are standard aquarium chillers, but the 1650W versions can reduce a PC loop down to -4ºC easy.

But the important thing to note when cooling a daily to sub ambient is the dew point.
Condensation occurs depending on normal temperature and the humidity.

So if you're at 23C and the relative humidity is 70%, water in the air will condense on your loop at 15ºC. That water can and will drip on components.
Use a dew point calculator: http://www.dpcalc.org/ and keep a temperature/humidity sensor nearby.

Just FYI, some overclockers in Hong Kong (HKEPC) do this with a water/alcohol mix down to -40ºC, using a phase cooler to reduce the water when they're not wanting to put LN2 on GPUs.
post #20 of 58
Thread Starter 
Quote:
Originally Posted by dimrain13 View Post

It is possible without chilling... but It is exspencive. you might however be able to use more cost effective fans.

]http://www.youtube.com/watch?v=VUbpb23yTK8&feature=share&list=LLffH1JNlSjE46ip7i7bl9Dw

I call lies on that.

Quote:
Look into Hailea chillers. They are standard aquarium chillers, but the 1650W versions can reduce a PC loop down to -4ºC easy.

But the important thing to note when cooling a daily to sub ambient is the dew point.
Condensation occurs depending on normal temperature and the humidity.

So if you're at 23C and the relative humidity is 70%, water in the air will condense on your loop at 15ºC. That water can and will drip on components.
Use a dew point calculator: http://www.dpcalc.org/ and keep a temperature/humidity sensor nearby.

Just FYI, some overclockers in Hong Kong (HKEPC) do this with a water/alcohol mix down to -40ºC, using a phase cooler to reduce the water when they're not wanting to put LN2 on GPUs.
I am aware of Dewpoint and how it effects things, I'm not entirely sure how it will work in this situation, The room the computer is in is air conditioned, It's the only room in the house with an air conditioner it sits at 16-20C No idea the humidity, However my air conditioner cannot keep up with my PC if its turned on so any Chiller or phase change (No idea where to start there but not against it) Unit would likely be in another room and as such taking the heat with it out there. [/quote]



for referance this will be done to an X79 rig, A 6 core (Likely 3930k) And 2 7970s, The 7970s can be run seperatly they don't scale as well with the cold.
Edited by Rayleyne - 2/2/13 at 7:49am
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