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Cool Radiators with waters instead of fans? - Page 2

post #11 of 18
Why not ditch the aquarium idea altogether because it's pointless when cooling the radiator with air works perfectly fine.

If that's not enough then buy one of those aquarium water chillers rather than a radiator.
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post #12 of 18
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Quote:
Originally Posted by Epitope View Post
Why not just put ice cubes in the aquarium?

I don't see the logic in cooling the cpu with water, then cooling that water with slightly colder water and then cooling that water with cooler water...

You still aren't providing a means to dissipate the heat. All you are doing is adding more heat capacity to the system.

Me thinks you need to study a little thermodynamics...
Yes you are right there is nothing that will dissipate the heat... I thought to place a small fan to the top of the aquarium so to lower water temperature from increased evaporation but I don't think that this will work either. Besides the target is to be fanless. If I have to put fans on it then there is no point... It would be great though
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post #13 of 18
Get a Big Rad like Mora or something and place it outside the house so the air could cool it, though in the summer might just be warmer... or place fans in it since its outside the noise will not bother you win win situation...
post #14 of 18
You can always find a used aquarium chiller, but they're not cheap and noisy (you can always install it in another room)
post #15 of 18
Quote:
Originally Posted by socratesx View Post
Yes you are right there is nothing that will dissipate the heat... I thought to place a small fan to the top of the aquarium so to lower water temperature from increased evaporation but I don't think that this will work either. Besides the target is to be fanless. If I have to put fans on it then there is no point... It would be great though
You should look into evaporative cooling. If you have the coolant water drip through the air it will cool because there is a high amount of evaporation. They are called "bong coolers".

There are several examples of them here at OCN. I think they are quite silly but they work.

http://www.overclock.net/water-cooli...ng-update.html

http://www.overclock.net/cooling-exp...6k-denied.html
    
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post #16 of 18
It amazing the lengths people will go just to avoid getting a larger radiator...
    
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post #17 of 18
I'm glad that the concept of thermodynamics has already been stated, because that is the entire underlying issue here. Yes, more water will stay cool for longer, but EVENTUALLY it will reach equilibrium and cool just like a normal watercooling loop with proper flow and rads.

These ideas are great, but most people don't understand that there are laws of physics at play and every configuration has a thermal ceiling...at 'some point' it will cease to perform any better given the fact that you don't have an inexhaustible supply of cool water and the ability of the water to release more heat in watts than are being dumped into the loop.
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post #18 of 18
Thread Starter 
Quote:
Originally Posted by Epitope View Post
You should look into evaporative cooling. If you have the coolant water drip through the air it will cool because there is a high amount of evaporation. They are called "bong coolers".

There are several examples of them here at OCN. I think they are quite silly but they work.

http://www.overclock.net/water-cooli...ng-update.html

http://www.overclock.net/cooling-exp...6k-denied.html
Wow bongs are somewhat extreme for me. Although they work they also rise a lot of concerns, let's say the condensation, the holes you need to open to the walls etc. I think it is more reasonable and less troublesome to just place a big rad like MoRA outside.

Anyway I just wanted to update the thread as I finally tried the to insert cpu and GPU rads into a 10L small aquarium. Room temperature was at 19C. I filled the aquarium with tap water at 11C. Overclocked at 4,5 Ghz I run a prime and the dead space 2 game the same time so to check how fast the temperature will rise. It got around 1 hour for the temperature of water to reach 20C. The maximum temperature of water that I observed was 32C

I left then the computer idle for 2 hours and the temperature of water stabilized at 29C. I played again dead space 2 for 1 hour and the temperature reached 32C. I was expecting higher temperatures to be honest. I have to think something as it looks promising and quiet.

The result is that for the first hours I get better cooling than before. After a point that the water stabilizes at 29C I get 3-4 degrees over than before. So I idle now at 31C while I max out at full load at 59C. I know that it is a matter of time for the temps to go over as the water will constantly heat up. The cooling of the system is clearly passive and it is not adequate to remove the heat faster than it is added to the system. Of course I can use ice to drop the temp of the water before overheating...

In any case I have to find a way to add a quiet active cooling... Anyway thank you all for your inputs.
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