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300W Water Cooled TEC Proposal - Page 4

post #31 of 38
I'm afraid to tell you that you have to run two separate loops, one for the hot side with the rad and one for the cold side. Will require two pumps and if you are thinking of using that single Tec it will not handle the heat load and the temps will quickly start to rise to the point of having normal water cooling being a better solution. Take your time and don't jump into this, do a little more research and save up a bit more cash. Not the cheapest solution to cold temps but when designed correctly can be sustainable and quiet, also there is some satisfaction when you know you have engineered it correctly. thumb.gif
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post #32 of 38
Quote:
Originally Posted by TheLAWNOOB View Post

Actually the 175 W includes the heat the TEC adds to.

I changed my plan a little though.



The TEC cools the water that goes to the CPU, and the hot side goes straight to the radiators.

Do you think one D5 is enough? Will the Y-splitting the water flow decrease my pressure and flow rate by a lot?

You don't want to heat the cold side with the hot side water.

Need two loops for a chiller, no way around it.
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post #33 of 38
The only advantage I think would be that those things are much quieter than trying to run a compressor unit to achieve below ambient temps.

I was actually doing a little "thought experiment" at work today... Run a saltwater chiller (obviously you will have to size the unit to your heat load) on all of your components, but to control condensation and make it look thoroughly sweet, drop the entire setup, barring drives, into a mineral oil fish tank. Condensation issue should be almost entirely solved. Just have to seal the unit at the top or otherwise make sure water cannot drip into the tank from the cold lines. Perhaps run them in from the bottom with a sealed bulkhead?
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post #34 of 38
Quote:
Originally Posted by ZytheEKS View Post

Regardless of the situation you never want liquid on your computer, way too many risks.

xD
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post #35 of 38
Thread Starter 
Quote:
Originally Posted by Masta Squidge View Post

The only advantage I think would be that those things are much quieter than trying to run a compressor unit to achieve below ambient temps.

I was actually doing a little "thought experiment" at work today... Run a saltwater chiller (obviously you will have to size the unit to your heat load) on all of your components, but to control condensation and make it look thoroughly sweet, drop the entire setup, barring drives, into a mineral oil fish tank. Condensation issue should be almost entirely solved. Just have to seal the unit at the top or otherwise make sure water cannot drip into the tank from the cold lines. Perhaps run them in from the bottom with a sealed bulkhead?

No, I like my paint insulated mobo better.
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post #36 of 38
Quote:
Originally Posted by TheLAWNOOB View Post

No, I like my paint insulated mobo better.
If you insist, you can do both.
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post #37 of 38
Oh and to clarify, when I say saltwater chiller I mean a unit designed for aquariums, as they cost a little bit less than what I have seen for PC use. Not implying that you should ever use saltwater.
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post #38 of 38
Quote:
Originally Posted by Masta Squidge View Post

xD


Comparing mineral oil coolant to TEC coolant or condensation is like comparing a chlorine pool to the ocean, two completely different concepts. A mineral oil chassis would also be a lot more pricey than insulation, and require maintenance. It's a clever idea, but ultimately would require a LOT of money for decreased cooling performance (as there would be cooling to the mineral oil around the CPU as well)
Quote:
Originally Posted by TheLAWNOOB View Post

Actually the 175 W includes the heat the TEC adds to.

I changed my plan a little though.



The TEC cools the water that goes to the CPU, and the hot side goes straight to the radiators.

Do you think one D5 is enough? Will the Y-splitting the water flow decrease my pressure and flow rate by a lot?


No offense but that is a terrible design. A TEC should NEVER have a radiator in it's loop. The entire point of a TEC chiller is to keep the fluid below ambient temps. Even after the fluid passes through the CPU block it should still be above below temp.

On top of that, a TEC will only ever move as much heat as it's labeled. If you have, lets say a heat load of 300watts, and a TEC chiller that will move 225 watts, then you will only remove 225 watts from that loop..... It will work as an insulator. You're temp will increase, and increase, and increase.


You need two separate cooling loops tongue.gif

TEC Chillers aren't cheap, that's for damn sure.


If you want a REALLY cheap alternative to a TEC chiller, get a copper block that's about 70mmx140mmx10mm

Then file one ends at an angle so on side is 40mmx40mm, and the other is still 70x140


Then apply the 40mm side to the CPU, then put the cold side of the TECs to the copper place, and cool the TECs.


biggrin.gif
Edited by ZytheEKS - 4/18/13 at 9:01pm
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