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New to TEC (peltier) cooling

post #1 of 12
Thread Starter 
So i want to come up with a tec cooling system for my laptop but i am not sure where to start. i am thinking of having some sort of set up where the peltier is outside the laptop with a heatsink on the hot side and pipes with fans moving the cold air from the peltier through the laptop with various holes in the pipes around various places by the processor. Would this be very effective and would it even bee worth it? What is the best and most efficient way from getting the cold off of the peltier and into the air inside the pipes? Should i put a small heatsink of the cold side her the fan to blow the air threw to get the air cold?

Her is what i was thinking for the place where the peltier is

post #2 of 12
Thread Starter 
I would also like to know, would blowing cold air threw my laptop create condensation inside of it?
post #3 of 12
This is a concept that while "works", is not very efficient...and TECs aren't the most efficient cooling method in the first place.

There was actually a pre built setup just like this that sat in a drive bay a few years ago. IIRC it only dropped case temps 1-2c...not much bang for buck for a big ugly expensive air cooler hanging in your case.

I'm on my cell right now, but if you Google "case AC" or "PC drive bay cooler" you should find it.
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post #4 of 12
Thread Starter 
Ok thank you for the help. What if you put the cold air right into the intake? Do you know of any better and more efficient cooling methods that would would work with a laptop?
post #5 of 12
Quote:
Originally Posted by CCaleb View Post

Ok thank you for the help. What if you put the cold air right into the intake? Do you know of any better and more efficient cooling methods that would would work with a laptop?

I have seen external AIO style watercooling kits modded to work on a laptop, but then you have a fairly large brick hanging off its side. I'm sure you could integrate one into a lap desk to make it look better, but it definitely wont help its portability smile.gif.
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post #6 of 12
The big question would be :
How do you plan on powering the unit?
Would have to be a stand alone power supply which kills portability. (no a laptop power supply is not enough)
Second --Since you plan on cooling the hot side with a HSF; ambient temps would have to be pretty low for the TEC to be effective.
Now if you were planning on gutting the laptop to make an energy efficient desktop unit... it's possible and worth it.
But for a laptop it's pretty much worthless.
To make a TEC effective the hot side would have to be heavily cooled... most use liquid cooling on the hot side.. and even then it puts out more heat than the laptop
ever could. You would have to take into consideration the amount of heat put off by the heat sink/Fan being pulled back into the so called "cold air" intake. The two would
be offset by each other therefore making the air being pulled back into the unit =/> than the ambient air that would otherwise be pulled in by a simple fan.
Know what I mean?
 
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post #7 of 12

==--

It won't work, dude. The TEC would get in the way of using the laptop.  Nevertheless, laptops DO have thermal problems.  I killed one once just by running a defrag.  The HDD overheated.

 

Your best bet is to come up with a way to forcibly blow more air into the intake duct.  Use a round fan like the ones in Graphics cards.  Stick it to the bottom of the case and redirect it's output air into your laptop's intake. That actually would make a difference and could be powered by USB. 

 

Make sure the feature is enabled that slows the CPU when utilization drops.  It will be WAY cooler since you almost never use 100% of your horsepower.  Also, disable the feature that reduces the fan speed when the CPU isn't boiling hot.  If you're concerned about heat, forget a silent PC.  For my desktop, I pulled the fan out of an old hair dryer and replaced the stock heatsink fan with it.  It works REAL well, even on low speed.  I can feel the hot air blast out of the bottom of the heatsink.  Fortunately, I don't care about noise.  I grew up around loud mainframes on raised floors in freezing-cold computer labs.

 

,

 

--faye kane homeless brain


Edited by FayeKane - 5/20/13 at 6:17am
post #8 of 12
Quote:
Originally Posted by FayeKane View Post

redirect it's output air into your laptop's intake

Uh... get the hot air and blow it in the laptop again is not a good way to cool it I guess tongue.gif

Why not buy a simple thing like this, powered via usb

http://www.iknow.com.kh/info/Laptop%20Cooler%20with%20HDD%20slot/2.jpg --> when at home

http://i00.i.aliimg.com/wsphoto/v0/780806370/USB-font-b-Cooler-b-font-Pad-Folding-font-b-Laptop-b-font-Notebook-Cooling-font.jpg --> foldable when on the road
   
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post #9 of 12
Quote:
Originally Posted by ASUSfreak View Post

Uh... get the hot air and blow it in the laptop again is not a good way to cool it I guess tongue.gif

Why not buy a simple thing like this, powered via usb

http://www.iknow.com.kh/info/Laptop%20Cooler%20with%20HDD%20slot/2.jpg --> when at home

http://i00.i.aliimg.com/wsphoto/v0/780806370/USB-font-b-Cooler-b-font-Pad-Folding-font-b-Laptop-b-font-Notebook-Cooling-font.jpg --> foldable when on the road

That's not what he was saying at all. He was saying get an external fan and mount it to blow air into the intake. He was basically describing what you linked.
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post #10 of 12

> He was saying get an external fan and mount it to blow air into the intake.

 

Yup!  And it would be easy,  too since the intake port is small.  Bringing your laptop to the hardware store and figuring out the best way to do that would be fun!


> That's not what he was saying at all

 

Uhh.. "she", please!  ☺

 

--faye kane girl brain

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