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Radiator experiment...

post #1 of 11
Thread Starter 
Okay, so Im pretty new to all this watercooling, phase changing, overclocking insanity. But Im having issues with my current watercooling setup, and I kind of concocted an idea and wanted to run it by the actual intelligent people to see what they think. I'll try to explain as best as I can, and then maybe if I have some time I'll mock something up in paint for more detail.

Basicly it's going to be another internal radiator, using aluminum as the outside, and copper tubing as the medium to carry the water, and dissipate the heat.

Basicly we have an aluminum, rectangular box. About 5"x12"W/L - Inside the box, I use wound copper tubing, now if my brain is working properly, the more winds you have, the more ability you have to dissipate the heat from the water. So we'll wind this several times inside the box, or as many as we can get. Im thinking about 22 times, the copper tube will be about 3/8" thick OD.

On the rear of the box, we have a high CFM 80mm fan. Then on the front, right side we have another 80mm fan expelling air out from the case on the panel that removes. In doing this (cutting a hole in the rear, and right side of the case) we keep the airflow in our "rad-box" completly independant from the case's airflow, and therefore not interupting it.

The reasoning behind all of this, is I want an inexpensive way to cool temps as close to ambient as possible. I figure if I have more water, and more surface area to cool the water, then we can get the temps down closer to ambient in an overclocked situation.

Of course, this box will be waterproofed, so if I wanted to I could just throw some dry ice, or some icewater inside the box to cool things down further, but that's not within the scope of the project just yet.

So Im curious what you guys think about this? I should be able to make it for under 50-60 bucks and although I haven't done any hardcore math on the subject. I should be able to drop temps, which are 51C now, to around 45C - Just guessing though.

Thoughts?
    
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post #2 of 11
Thread Starter 
Well here's my hillarious attempt at drawing a picture of my design. :lol:

    
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post #3 of 11
Thread Starter 
Granted, this thing will be pretty damned loud. Using Tornado fans for both the intake and the exhaust fans. At over 80CFM each, this thing should move air like a hoover. I just hope the copper can dissipate the heat as I hope.
    
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post #4 of 11
I'd suggest putting the air in where the water goes out and having the air go out where the water goes in. That way you don't have warm air going along with the direction of the water - so the colder air hits the water as its going back towards the block.
post #5 of 11
Thread Starter 
I'll take that into consideration, and try out both ways when I get everything together. Do you know why it would make a difference?
I would think the air has very little to do with the water, the air comming in is actually to help dissipate the heat moving through the copper tubes.
    
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post #6 of 11
I'm saying that if you have air going in the same end as the water there won't be as much air passing the water as it goes through the tube, so instead of it running along side eachother reverse the flow that way the water will have more air passing it by faster and should cool it off better.
post #7 of 11
Thread Starter 
Hmm. Interesting thought. I'll def see if there's a difference in temps that way.
    
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post #8 of 11
It would be crap!

No offence but you'd get better temp's using a normal rad.

The principle behind it is.... surface area, it's all about surface area and that has a very low surface area.

If you brazed fin's onto the 3/8" copper then you'd get better temps but you'd still need a lot more surface area to compete with a normal 80mm rad, even using this as a second rad it wouldn't make much if any diffrence.
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post #9 of 11
Cronic, no need to be so appologetic.

Now at the moment I'm at work so if I seem distracted, it's because I am. The jist of what you're saying is you want to make an external radiator box right? It certainly sounds interesting but I am not sure if the copper tubing has enough surface area to disipate (as Petrol Head said).

Instead of using copper coils why not just use a larger radiator in a custom built box? Another thing if you mix copper and aluminum components you might run into the problem of corrosion.
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post #10 of 11
one other thing you could do, you could use a car radiator and a floor fan to blow air though it, ofcourse it may be a little loud, and for that size radiator might cost you around $100.. but it will certainly get the job done. ambient temperatures will not be difficult to come by in this situation. i would predict around 30C at the most.

Most radiators (to be efficient), have fins along side the piping, if you don't want to go as drastic as to use a car radiator, i'm sure if you found some way to dissipate the heat by attaching fins to the pipes, that would work as well..

just a thought.
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