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Old 3 Weeks Ago   #1 (permalink)
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Default TEC into W/C loop Idea

Okay this is my idea. To put a Waterblock with the Cold side of a TEC cooling the liquid. On the Hot side, something like a Megalahalem or something along the lines to cool the hot side. Would this work?

something like this?



Thanks.
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Old 3 Weeks Ago   #2 (permalink)
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i would put the chiller between the rad and the cpu block, but yes, lots of people do it.

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Old 3 Weeks Ago   #3 (permalink)
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do you have more money? think of
tec
v
tec
v
tec
I dont see how it wouldnt work..
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Old 3 Weeks Ago   #4 (permalink)
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Quote:
Originally Posted by bootscamp View Post
Okay this is my idea. To put a Waterblock with the Cold side of a TEC cooling the liquid. On the Hot side, something like a Megalahalem or something along the lines to cool the hot side. Would this work?

something like this?



Thanks.
I am getting ready to do something similar to this, what I am going to do is use a stock i7 heatsink on the hot side of a TEC and a Swiftech Apogee GTZ on the cold side of that same TEC, then I am going to run my coolant loop through it. I am in the process of machining a cylinder to house the all the part so I can bolt it to the inside of my case where a 120mm fan would go. I am interested to see how much it will help my temps.

One thing I would change about your loop, make the coolant go right into the pump after the CPU... like this:

Pump > Radiator > TEC > CPU

I say this because the pump itself will generate heat, and it would be best to have all your cooling (radiator and TEC) come after all of your heating (CPU and pump).
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Old 3 Weeks Ago   #5 (permalink)
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Only problem might be the rad....

how cold you looking for ?
How are going to control the power of the TEC ?

I am afraid if your one of those looking for dew point temps you will need to have some sort of thermostatic regulation for the TEC, even then it's not guaranteed to work well you would have to set a high enough minimum temp to ensure you never go below dew point. Unfortunately that pretty much means there isn't a lot of point using a TEC. Top grade water cooling will get you there unless you live in the middle of a desert. To think TEC usage is cheap is totally incorrect you need a bit more than just a TEC and a couple of waterblocks.

If your happy to go sub ambient and insulate your mobo etc the rad will be a problem it will constantly try to heat your coolant back up.
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Old 3 Weeks Ago   #6 (permalink)
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Quote:
Originally Posted by typoknig View Post
One thing I would change about your loop, make the coolant go right into the pump after the CPU... like this:

Pump > Radiator > TEC > CPU

I say this because the pump itself will generate heat, and it would be best to have all your cooling (radiator and TEC) come after all of your heating (CPU and pump).
that is not really the best way to do it.

the pump makes very little heat and it works best by pushing the water not pulling.

loops should always go res>pump>rad>everything else>res

any heat made by the pump will be disipated by the radiator and the liquid will be coldest right before the CPU block just as it should be.

(that is why i said to put the tec between the rad and cpu earlier)

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Old 3 Weeks Ago   #7 (permalink)
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Actually it doesn't matter where you put the TEC in a loop with a radiator you won't have any significant gains as the thermal gradient will prevent that. Essentially if your radiator cannot keep up with the heat being dumped into the loop then your TEC will help. If it already dumps the heat quite well the difference will be minimal or limited to how much you can cool the fluid down in one pass without lowering the system flowrate.
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Old 3 Weeks Ago   #8 (permalink)
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i disagree. if you put it right before the RAD then you will be dropping the greatest amount from what it would be without the tec right before the cpu block.

yes there will be no difference in the average temp of the whole loop, but the cpu will be coolest.

i do agree that if you are going very far below ambient the rad will just fight the tec though.

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Old 3 Weeks Ago   #9 (permalink)
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Quote:
Originally Posted by kevingreenbmx View Post
i do agree that if you are going very far below ambient the rad will just fight the tec though.
Dependant on the TEC used just to get near ambient will have the rad fighting the TEC it wont be a case of getting far below ambient.
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Old 3 Weeks Ago   #10 (permalink)
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From what i have been reading - using a TEC is a large waste of electricity with something <30% efficiency
As for temps - yes you will get sub ambient (if you have a powerful TEC) but the cooling of the TEC required is very large.
If i was to do it - from what i have read - your better off with a dual loop - the one with the CPU etc + cold side of the TEC and another loop just to cool the hot side of the TEC
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