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Air Conditioner

post #1 of 12
Thread Starter 
Hey, I am trying to make a water chiller after I relized that my old fridge was thermoelectric.

Which air conditioner unit would be most suitable to be turned into a water chiller. What temps shall I aheive, where can I get it? A model number if possible? Instructions on how to do it?


Thanks in advance
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post #2 of 12
http://www.overclock.net/phase-chang...ject-cold.html
there is my thread on what I was up to, it never really got working well. I have put it down to two things, not using thermal paste that could handle the extreme cold and not using enough paste for my block.
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post #3 of 12
Thread Starter 
So, are you saying it was a "good" idea? What were your final temps with comp on.
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post #4 of 12
Quote:
Originally Posted by Chopes
So, are you saying it was a "good" idea? What were your final temps with comp on.
Well I had some issues with now I think was the water block not seating correctly and using the wrong thermal paste. The temps should have been a hell of a lot better than what I was getting, they would vary between maybe 20c load and nearly 50C load on my 3000+ at 1.7vcore @ 2900mhz+. It is a good idea, the liquid was very cold and at one point I froze the Anti freeze which was a very strong mix indeed, so the liquid was under -30c. I think I have a pic I should include that one in the thread. I had to use 25L of liquid for the unit I was using was overkill, so a relatively small unit should do the job just fine. the project can be a bit messy and a stuff around but once you get it all cleaned up and sorted it is good fun. go for it!!!
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post #5 of 12
Thread Starter 
How does one insulate the tubing?
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post #6 of 12
Quote:
Originally Posted by Chopes
How does one insulate the tubing?
go to the plumbing section of your hardware store and you can buy lengths of tubing with a hole in the middle perfectly for this kind of work. It is cheap and you just cut it to length. Slide your water pipe through and perfect.

EDIT, you are getting me enthused about the project again.

Are you thinking for the vid card as well
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post #7 of 12
Thread Starter 
yup, what im aiming for is getting the cpu down, and then having the water thats left the cpu goto the gpu, and back to my rad, then to my res where the chiller will be and be pumped out again.

my current setup is:

Pump->Cpu->Gpu->Radiator->20' of copper pipe->Resevoir


Yes... I welded 20' of copper tubing with turns and all
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post #8 of 12
Chopes! Here's what to do--purchase a used wall unit--the smallest you can find--tear the unit open and locate the evaporator head--it looks like a radiator but it gets really cold when you run the AC unit. Seperate the evap from the unit without breaking or crimping the lines running to and from it--ideall you will want to gently reform these lines to allow the evap head to be puit into a 12-pack coolie (insulated container). You will want to also put the radiator or heatercore or simple coil of copper that is a part of your PC cooling loop (water cooled) in that same coolie in proximity to the evap head.

Fill the lines for your PC cooling loop with some serious antifreeze--they are going to get cold enough to turn the coolant to slush (-30C) and use dielectric grease to protect your cpu socket from condensation--you will probably need to prep the mobo with some special sealer like that used for Phase change and liquid Nitrogen set-ups. Insulate all the lines to and from the CPU/GPU and to/from the heatercore in the coolie.

I call the insulated container with the evap and heatercore in it a SlushBox because you will need to fill it with some serious antifreeze or even denatured alcohol.

Turn on the AC unit--you will need to disable the thermostat (by bridging the correct wires from the controller) if you want maximum cooling. But actually it might be a good idea to use the thermostat at first to see what kind of chill you can get.

Tuchan's thread has lots of cool info in it--you should probably give it a look.

Good luck and don't get burnt by that cold stuff--it is seriously dangerously cold.
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post #9 of 12
The biggest problem is locating the AC unit itself and the noise, I removed the barrel fan inside the unit and put a ceiling fan on it instead, real quiet. the other problem is the heat generated, you almost need adn airconditioner to cool the room from the airconditioner. It hot the first time yoiu turn it on for it is taking out the heat from the liquid but once it gets down to yor desired temp get the thermostat sorted and then the unit will hardly be on at all, especially in an insulated case. another good idea is to drop a few beers in your "slushbox" and drink them whilst working on the rig!!! If you can place the rear of the unit out a window it would be perfect.
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post #10 of 12
Thread Starter 
ok weill i have a mini fridge that i am not using will that work as my slushbox? if i just dont plug it in?

Is there a faq with pics or something to see what im looking for and how to remove the evap and all?
FX-57 Rig
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AMD Athlon64 FX-57 DFI Lanparty NF4 SLI-DR EVGA 7950GX2 OCZ 2x1 GB 2-3-2-5 
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74GB Raptor Windows Vista Ultimate Acer AL2216W 22" Widescreen Saitek Eclipse (Blue) 
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FX-57 Rig
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AMD Athlon64 FX-57 DFI Lanparty NF4 SLI-DR EVGA 7950GX2 OCZ 2x1 GB 2-3-2-5 
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74GB Raptor Windows Vista Ultimate Acer AL2216W 22" Widescreen Saitek Eclipse (Blue) 
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