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Outdoor Radiator Questions

post #1 of 20
Thread Starter 
I thought that I look into having my radiator outside my house seeing as I have a convenient window that I could use for something like this. I want to know what I would need to consider. I don't actually plan on building this for another year or two though. I did a quick drawing on Google SketchUp:


445

EDIT: Sorry for bad paint writing lol
Edited by Plooto - 5/10/12 at 2:42pm
post #2 of 20
You'll need a stronger pump than typically used for water cooling to handle the extra head, something like the various Iwaki pumps are often recommended if you're placing it very far outside, a strong 655 can work if it's not that far. If your outdoor temperature gets much below freezing, you'll want to insulate your motherboard against condensation (especially if you're in a mid- to high-humidity climate), and if it gets seriously cold you may want to run a partial anti-freeze mixture. I'd recommend Tygon Norprene tubing here, it's slightly better than average for insulation (though you probably still want to insulate the tubing, and definitely the components).

IMO, it's not really worth it. I'd run the radiator in front of the window, and open the window partially to get cool air without exposing the rad to the elements. Since your water temp shouldn't be drastically below ambient, condensation is less of a problem, so insulation isn't really needed then.
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post #3 of 20
Thread Starter 
Ok thanks
post #4 of 20
Why you're doing this is one of the big questions you need to answer. If you're doing it to keep your room cool, then you want to be blowing air out of the window, not in. Actually, that's the only reason I can see why you would want to do outdoor. If you wanted to heat up your room, you would just have it inside the home circulating hot air instead of bringing air from outside in.

Also, where do you live, and what is the weather like generally? It would be a cool project to do. One other person who said he was doing something similar, said he lived in climates where it would drop below 0 C. A remedy for that is a temp sensor. When the water temperature is above a certain level, the fans would switch on. When it's below a certain level, they'll turn off, so you don't need to worry about condensation/freezing. Of course, this would also mean you're leaving your computer on 24/7.
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post #5 of 20
You don't mention your climate or your setup, but here is my experience with throwing radiators out the window like you suggest.

Here in Texas it's constantly hitting over 100F outside the house so you can imagine it would not be wise for me to dump the 1 kW of heat generated by my mining rig into my room.

I run a single MCP35X across ApogeeXT, 3 EK 7970 blocks, MCR420-QP radiator and 40 feet of 3/8 ID tubing out the window and the flowrate is still acceptable.

40 feet of tubing really has pretty low restrictions compared to something like a CPU block.

Of course the above only really works as a 24/7 setup if you're trying to cool the room by exhausting the air. If you're trying to heat up the room you'll have to worry about additional elements like rain.
    
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post #6 of 20
Thread Starter 
I live in London, outside is almost always colder than inside of my house. Temps range from 0 to 25 degrees Celsius so I doubt the water would freeze or anything. As you can hopefully see in the drawing the window is right next to my pc and I think my roof goes over the window so it wouldn't be in constant contact with the rain. I could easily build a wooden or aluminium box to shield the radiator in my school's DT work place.
post #7 of 20
Thread Starter 
It definitely wouldn't be 40 feet, I'm only estimating but the distance from the wall of my house to my pc is only like 5 feet. Plus the grommets on the back of my case should be pretty helpful. Another thing I'm considering is have a separate case just for rads on a shelf. Someoe has already does it in the water cooling club if you wanna see. I thought that the distance out the window would be less that to a shelf (possibly?)
post #8 of 20
There's two reason to do an outdoor radiator setup. Well, actually 3, but two main ones.

1. To prevent your computer from heating up your room.

2. To get sub-ambient cooling since outside is colder than inside.

3. For the hell of it biggrin.gif

If you don't care about it heating up your room, you can do the separate case with the radiators in them.

Otherwise, if you go with outdoors, definitely protect the radiator somehow, if only just to keep the animals out.
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post #9 of 20
Click the ROG-BOX in my sig, I have two. One for winter the other for summer. The summer version can easily dissipate 1400w at 10c deltas...
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post #10 of 20
Thread Starter 
Could you post a Core Temp screenshot?
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