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I'd like some tips/feedback on a water chill system

post #1 of 9
Thread Starter 
I want to move on to some extreme(er) methods of cooling. My goal is to cool all of the major components in my PC (ie. CPU, two video cards, and mobo chipset) Putting a peltier on each of these components does not excite me too much. I am more interested in the idea of cooling the water in the loop. It would essentially be a two loop system. I've read that people have successfully done this. So, from my limited knowledge that I have gathered thus far, here is my plan.

http://www.frozencpu.com/ex-blc-243.html

This little bad boy will be at the heart of the whole thing. Two of them actually. The idea is to sandwich a peltier or two between two of these water blocks. One side would get cold and cool my CPU/GPUx2/mobo chipset while the other would be some form of radiator/fan assembly for the heat.

Now, I'm not sure exactly how much heat each component generates, but generally speaking modern cpus and video cards generate about 100+ watts each and many newer motherboard chipset will generate about 30-40 watts. thats about 340 watts of heat but I'm going to say they are going to generate about 400 watts of heat just to be on the safe side.
So....

http://www.frozencpu.com/exp-04.html


Two of these monsters will do just the trick. Two 437w peltiers would operate at below 50% capacity which is ideal from what I understand. And thats more or less the plan. Now, here are my questions.

For the hot side I plan to use
http://www.dangerdenstore.com/product.php?productid=48
I believe that is the famous '77 Bonneville heater core. Those 437w TECs will generate a lot of heat so I plan to use two of these guys with four 120mm fans or possibly some sort of other air moving scheme. Will this be enough to keep the peltiers from overheating/melting?

My next question is about powering these guys.
http://www.frozencpu.com/psu-123.html?id=5Jf87zXb
This Meanwell psu should adequately power the qmax 437 tec. It will actually power two of them as it has 50 amps available @ 24v which is roughly what two 437's will consume. Now, I have also seen a similar Meanwell psu, its identical actually except that outputs at 12v/50amps instead of 24v. My math and understanding of electricity is not good. So, my questions are:
Is it more efficient to run the two 437 tecs at half of their rated voltage than at full voltage? I have read that some users in this forum run tecs at 5v and keep cpu temps sub ambient.
Is either of the two meanwell psu's capable of powering two tecs at their respective voltages? (12v and 24v. I am pretty sure they can, just want to be sure)
Which one makes more sense I guess is what I am asking. Two TECS at 12v or at 24v. At 24v they are running at near max which from my understanding is not ideal.

So that's about the gist of it. This is really just the planning stage. This system will likely cool next gen hardware. Something based on the upcoming socket AM2 (or whatever its called) from AMD and whatever the next gen vid cards will be. Nvidia 8800 or ATI x2800 or something.

I would appreciate comments/feedback/ideas or just tell me I'm out of my mind for even attempting this. Like I said, this is just the planning stage so there is plenty of room for improvements. At the moment I'm pretty much sold on cooling the water instead of on die cooling. My thinking is that should this fail miserably I could just stick a regular radiator in there and have a fully functional rig with minimal hassle. Anyhoo, thanks in advance for your guys help.
post #2 of 9
Welcome to the forum Go to the top of the page and you will see "user cp" go in there and fill out your details and we can go from there....


As for the HDD cooler I don't think that is nescessary at the moment, you really want to be concentrating on the rest before you worry about the hard disk getting too warm. The 437 watt tec is very good indeed and the psu is also the go. If you are planning to run anumber of peltiers then you will need to have a water cooling rig that is very much up to scratch to cope with the heat generated. Running the peltiers at full voltage is not ideal, around half or more is better is most cases. 18V seems to be pretty good. I would be looking into a bigger rad that that one and even getting a heatercore from a vehicle or something similar to do the job. Remember that the cooler the hot side the cooler the cold side. You don't want a water cooling set-up that can just do it: you want it to be able to do it with ease.

When you get the specs in then I can have more of an idea on what you are trying to achieve here
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post #3 of 9
Thread Starter 
The hdd coolers will not be used to cool hdds. They will be at the heart of the whole thing. I dont want to draw a picture unless I really have too, but it'll be something like

water loop 1 radiator<------<polarflo water block><peltier><polarflo water block>----->water loop 2 (CPU, GPUx2, chipset)

One polarflo water block will cool the hot side of the peltier and the other polarflo water block will get cold and cool the pc compnents. The peltier will be sandwiched in between the two water blocks. Each water block will be part of a seperate water loop.

The link for the radiator actually is a heater core from a car. And I would likely use two.

Oh, and the likely specs of the pc would be something along the lines of:
AMD 4400+
2 nvidia 7800 GT video cards
Probly an Asus an32 motherboard
post #4 of 9
I now understand what you are trying to do. This looks as like it is going to be a costly exercise but very interesting indeed. Have you priced the lot up yet?
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post #5 of 9
ahah, now i finally know what a peltier actually does. Ive just been kinda listening to tuchan on vent and nodding my head. But now i get it. That is a very good idea you have for cooling, it sounds awesome if you can get it all working.
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post #6 of 9
slydog64 they are pretty cool hey Amazing little things.


You could step this project up big time and run 4 x 437 watt peltiers on that hdd block. Then you would surely have an extreem chiller. You would have to run some sort of anitfreeze mix in the loop as you would freeze water with no problem at all.

For 4 x peltiers then the water cooling system would really have to be top shelf. As for the flow speed then there would have to be some playing around. You would want the loop as short as possible (chilled liquid) as to keep as much of the liquid in the chiller for as long as possible.

If this works then a few eyebrows will be raised as to the possibility of others doing this.

Good luck!!!
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post #7 of 9
Thread Starter 
Pricing shouldnt be too bad. A lot of the parts I've been finding on ebay. The polarflo water blocks usually sell for less then half of their MSRP. I think the total for for the peltiers, radiators, water blocks, a pump, and some fans will probly run around $600 US. Then add another pump, water blocks for the cpu, vid cards and motherboard, tubing etc. Most likely the entire cost of the whole system will be around $1200-1500 depending on how things go.
post #8 of 9
I've not yet made a chiller, but I don't think a simple reservoir will give the water enough surface area to effectively transfer the heat from the water to the cold side of the TEC's. There was a Swiftech chiller... That'd be the design to follow.



The chilled water flows through the center where the "teeth" are.

http://www.procooling.com/index.php?...s&disp=84&pg=1

You'd definately want larger tubing, I'd go 1/2" ID at least.
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post #9 of 9
Thread Starter 
I've thought of that too. The copper plates on the water blocks are pretty thick, so I was thinking of maybe either cutting a pattern into the block or perhaps attaching some RAM heatsinks with Arctic silver thermal epoxy to increase the surface area. Its not the best way to do it I know but it should do the trick. If worse comes to worse I might just have a copper block machined to what I need. I know a guy that may be able to do it for cost of materials and a six pack

This whole thing probly isnt the best way to go about things, but I guess the point is to try something different from everyone else. I appreciate the help. I've gotten some pointers on things I havent thought of that will help a lot.
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