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Peltier soda cooler builds - Page 3

post #21 of 29
Quote:
Originally Posted by Mindchi|l View Post

nah.. look at the comparisons, the tecs I use hands down beat those cheapy 127 couple tecs even at 12v. and are way more effecient because they have 199 couples with way less heat output and way less power draw on them with virtually the same qmax at dt=20c thumb.gif

You are correct, I just looked at the chart should have done that earlier doh.gif
post #22 of 29
Quote:
Originally Posted by Krow View Post

The 400W TECs produce about 218W of Waste Heat while being able to move about 145W of Heat with a 20°C Difference.
The 694W TECs produce about 144W of Waste Heat while being able to move about 150W of Heat with a 20°C Difference.
Using the latter, you could cool even lower/faster, due to less waste heat having to be removed from the radiator.

cheers.gif
post #23 of 29

Awesome.

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post #24 of 29
Ok I Have few questions, what if I put that 12v 400w between my cpu and my EK waterblock, can i use just a molex connector to the psu ( since i have around 500w unused, or i can use additional psu ) since its 12v, do i need to chance amperage with a resistor?. Also would i need TIm between the cpu and peltier and waterblock? If i went with your 24v version can I use a standard 750w and convert it to 24v? what would be the easiest / cheapest way to convert it to 24v. I want to stay just below ambient which is around 25c mostly in summer and my cpu idles at 28-32c and 58-61c load.
post #25 of 29
Haha, I want to build one of these into my next desk. lachen.gif
post #26 of 29
Thread Starter 
Quote:
Originally Posted by Mindchi|l View Post

I guess I'll have to make one now using These Bad Boys and my controller as well biggrin.gif

Nice. I can just imagine 4 of these guys on the sides and 1 on the bottom. Of course they'd all need custom waterblocks... thinking.gif
Or are there already commercially available waterblocks for this size?
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post #27 of 29
Quote:
Originally Posted by The_chemist21 View Post

Ok I Have few questions, what if I put that 12v 400w between my cpu and my EK waterblock, can i use just a molex connector to the psu ( since i have around 500w unused, or i can use additional psu ) since its 12v, do i need to chance amperage with a resistor?. Also would i need TIm between the cpu and peltier and waterblock? If i went with your 24v version can I use a standard 750w and convert it to 24v? what would be the easiest / cheapest way to convert it to 24v. I want to stay just below ambient which is around 25c mostly in summer and my cpu idles at 28-32c and 58-61c load.

The 12V 400W uses ~23A so that's a no on the molex, probably a no one a single 6pin PCIe but I'm not 100% sure. You're not going to change the current with a resistor unless you go Parallel, and even then, it's not going to be much.

EDIT: Sorry n00b mistakes, you're not going to change the current unless you change the voltage of the TEC which would be in series. And I don't know of any resistors that can handle 23A.

Yes you would need TIM to ensure that heat is being removed efficiently. On both the hot and the cold side of the TEC.

If you go with the 24V version, you can run it at 12V, which will pull like 12A or so, which will work with a 6pin PCIe, probably not a molex. There is no need power the TEC with 24V, that would make it very inefficient.
Edited by Krow - 7/25/12 at 6:11pm
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post #28 of 29
Thanks for the info +Rep
post #29 of 29
Holy. Mother. Of. Overkill.

And I thought my 62W TEC fridge project was already too powerful for the task tongue.gif
   
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