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TEC Chiller Design.

post #1 of 7
Thread Starter 
So I've been putting ideas in my head together for a custom TEC chiller, and I'm hoping for some critique/ideas.

Here's the ideas so far.

I'm going to get this PSU
http://www.frozencpu.com/products/8286/psu-123/Mean_Well_600W_24V_Single_Output_Switching_Auxiliary_Power_Supply_SE-600-24.html


And run 2 of these http://www.customthermoelectric.com/tecs/pdf/19911-5M31-28CZ_spec_sht.pdf
I'm going to chain them togethe so they will be running at 12volts

Then I'm going to use 4 of these http://www.shop.customthermoelectric.com/25412-5L31-07CQQ-2-Stage-Thermoelectric-Peltier-Module-25412-5L31-07CQQ.htm
And chain them together so they run at 12vs


Then I'm plan to mount the cold side to these
http://www.frozencpu.com/products/5903/cpu-cjg-10/Cooljag_DAL-B_1U_Server_Fanless_CPU_Cooler_JAC0701C_-_Socket_771_.html#blank

And use plexi-glass to create a chamber where the liquid will flow into, then it will pass through the passive heatsinks, and get cooled, then flow out the other side.


Any thoughts?

I still have yet to address the cooling of the peltiers in a practical fashion. I know of several ways, but non of them are fiscally wise. So any ideas there would be nice
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post #2 of 7
Quote:
Originally Posted by ZytheEKS View Post

So I've been putting ideas in my head together for a custom TEC chiller, and I'm hoping for some critique/ideas.

Here's the ideas so far.

I'm going to get this PSU
http://www.frozencpu.com/products/8286/psu-123/Mean_Well_600W_24V_Single_Output_Switching_Auxiliary_Power_Supply_SE-600-24.html


And run 2 of these http://www.customthermoelectric.com/tecs/pdf/19911-5M31-28CZ_spec_sht.pdf
I'm going to chain them togethe so they will be running at 12volts

Then I'm going to use 4 of these http://www.shop.customthermoelectric.com/25412-5L31-07CQQ-2-Stage-Thermoelectric-Peltier-Module-25412-5L31-07CQQ.htm
And chain them together so they run at 12vs


Then I'm plan to mount the cold side to these
http://www.frozencpu.com/products/5903/cpu-cjg-10/Cooljag_DAL-B_1U_Server_Fanless_CPU_Cooler_JAC0701C_-_Socket_771_.html#blank

And use plexi-glass to create a chamber where the liquid will flow into, then it will pass through the passive heatsinks, and get cooled, then flow out the other side.


Any thoughts?

I still have yet to address the cooling of the peltiers in a practical fashion. I know of several ways, but non of them are fiscally wise. So any ideas there would be nice
Few things to think about.

The second TECs listed can only move ~48 watts, and are basically useless in a computer cooling environment. High Dt is worthless if its only at a very low heat output.

Also, look at the surface area of the TECs then the area of the heatsink you listed. I actually like that heatsink - a nice hefty hunk of copper with tons of surface area. It is 88.9L x 78.7W though, so two 62mm TECs won't fit on it. You would need two of those copper heatsinks, brazed together, then find a way to seal them to a top. Actually, you would need 4, because of my next point...

How do you plan on cooling the hot side of the TECs?
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by Puck View Post

Few things to think about.

The second TECs listed can only move ~48 watts, and are basically useless in a computer cooling environment. High Dt is worthless if its only at a very low heat output.

Also, look at the surface area of the TECs then the area of the heatsink you listed. I actually like that heatsink - a nice hefty hunk of copper with tons of surface area. It is 88.9L x 78.7W though, so two 62mm TECs won't fit on it. You would need two of those copper heatsinks, brazed together, then find a way to seal them to a top. Actually, you would need 4, because of my next point...

How do you plan on cooling the hot side of the TECs?


Two of the first 400 watt ones at 12 volts will move about 350 watts of power, according to UltraSonic2s TEC calculator.

My original plan was to have 4 of the 4 watt ones, but then I wouldn't be able to have 2 of the smaller ones, because the PSU didn't put out enough wattage, but then put on 2 400s and 4 of the other ones, and the numbers add up quite well

Since the 2 400s can already move much more than the heat load of an FX-8350 (Which if my info is right put out around 250watts of heat with a moderate OC), adding the 4 high dTmax peltiers that can move a combined heat of around 200watts, I'll be able to move around 550 watts. I would imagine that would be more than enough keep my CPU really cold.


Again, I have some backup plans on how to address the cooling, but nothing is fiscally sound at this point, so if you have any ideas please do share.
Edited by ZytheEKS - 4/15/13 at 6:08pm
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post #4 of 7
Thread Starter 
Quote:
Originally Posted by Puck View Post

Few things to think about.

The second TECs listed can only move ~48 watts, and are basically useless in a computer cooling environment. High Dt is worthless if its only at a very low heat output.

Also, look at the surface area of the TECs then the area of the heatsink you listed. I actually like that heatsink - a nice hefty hunk of copper with tons of surface area. It is 88.9L x 78.7W though, so two 62mm TECs won't fit on it. You would need two of those copper heatsinks, brazed together, then find a way to seal them to a top. Actually, you would need 4, because of my next point...

How do you plan on cooling the hot side of the TECs?

Oh and to address your comment about sealing the top, as I said before, I'll use a Plexiglass frame on the sides of the chiller to seal it
Edited by ZytheEKS - 5/11/13 at 8:46pm
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The Laboratory
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post #5 of 7
I hope you haven't actually bought anything yet?

The first 2 peltiers are 62mm x 62mm 400W, that's some serious heat dissipation, and I've already tried the copper finned block to transfer the cold to liquid and it failed miserably.

Cooling the hot side of a peltier that powerful is a problem you need to address first, you cannot water cool it with todays traditional water cooling because the pumps cannot take the heat.

You cannot even consider approaching the 125C Tmax that's above the 100C boiling point of water, so cooling the hot side is the most important missing piece of your puzzle.

You'd be better off with a standard PC power supply single 12v rail with the amperage and wattage handling a minimum of 25% past the peltier requirements, that you could motherboard link to the main computer to start up when the main machine starts.
post #6 of 7
Thread Starter 
Quote:
Originally Posted by OCAddict View Post

I hope you haven't actually bought anything yet?

The first 2 peltiers are 62mm x 62mm 400W, that's some serious heat dissipation, and I've already tried the copper finned block to transfer the cold to liquid and it failed miserably.

Cooling the hot side of a peltier that powerful is a problem you need to address first, you cannot water cool it with todays traditional water cooling because the pumps cannot take the heat.

You cannot even consider approaching the 125C Tmax that's above the 100C boiling point of water, so cooling the hot side is the most important missing piece of your puzzle.

You'd be better off with a standard PC power supply single 12v rail with the amperage and wattage handling a minimum of 25% past the peltier requirements, that you could motherboard link to the main computer to start up when the main machine starts.


Been way to caught up with recent things to get serious about my TEC build, so no I haven't bought anything yet. What was wrong with the copper finned block?


I think your calculations on the heat dissipating is quite off. The 400w peltiers at 12volts adds about 145watts to the heat load it's moving, so lets assume it's moving 200 watts, we end up with a heat load of roughly 350 watts. Watts are measured in joules per second. So now we work with joules, so we can convert to Celsius heat units properly. In order to even come near the boiling point we would need to add over 120,000 joules of heat to the water, which would take 30 minutes if I wasn't cooling it at all.

Cooling 350 watts shouldn't be too hard, I would imagine any standard waterblock could pull it off. Now if I tried to run it at 24volts for it's total dTmax potential, then we're looking at a heatload of 1000watts, but I won't be using 24volts tongue.gif

As for my pump, I'll just mount it after the radiator setup. I might also try to integrate my current project into cooling the hotside of the TECs

http://www.overclock.net/t/1389969/build-log-zero-core-reactor
Edited by ZytheEKS - 5/11/13 at 5:54pm
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The Laboratory
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post #7 of 7
Quote:
Originally Posted by OCAddict View Post

I hope you haven't actually bought anything yet?

The first 2 peltiers are 62mm x 62mm 400W, that's some serious heat dissipation, and I've already tried the copper finned block to transfer the cold to liquid and it failed miserably.

Cooling the hot side of a peltier that powerful is a problem you need to address first, you cannot water cool it with todays traditional water cooling because the pumps cannot take the heat.

You cannot even consider approaching the 125C Tmax that's above the 100C boiling point of water, so cooling the hot side is the most important missing piece of your puzzle.

You'd be better off with a standard PC power supply single 12v rail with the amperage and wattage handling a minimum of 25% past the peltier requirements, that you could motherboard link to the main computer to start up when the main machine starts.

You can easily water cool them, just need enough radiator.

I'm cooling one on die of an overclocked 3770k with 3x120 and 2x140 in series. Water temp on idle is 5-6c over ambient, and only creeps up a few C on load.
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Behemoth
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2X4GB Patriot Viper Extreme 1TB Velociraptor 10k RPM w/ 64MB Cache Two Arqtik TEC Chillers in Series Archimedes TEC block w/TN660 TEC 
CoolingCoolingCoolingCooling
Two Ported/tapped MCP655 Pumps 2x Black Ice GTX 480 Gen2 Rads DD dual drive bay Res with LCD water temp monit... GPU Loop: Modded Enzotech Sapphire CPU blocks, ... 
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