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Freezone TECs

 Post subject: Freezone TECs
PostPosted: Wed Nov 30, 2016 2:46 pm 
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Hi everyone,

looking for a little help with my freezone elite. I need to replace one of the TECs that the lead broke off of. There are no markings on the tec, but they have 3 chips electrically wired in series, two sets of them. The two sets are electrically wired in parallel. With three in series running off 12V, they should all be 4 or 5 V tecs, but I can't find any in that voltage range that are also 40mm x 40mm.


I did find some 4.6V High-Temp TEG's, very cheap, and I bought one and tried it out by itself, it seems to behave like a tec. They give strange specs for TEGs, the one I have is 100 deg | 4.6 V | .669 A. That doesn't sound like it has much wattage, and 100 is not believable as the delta T, so I'm probably on the wrong track with the TEG.

I'd like to find the same tec's as in the freezone elite. i have an idea to replace the Freezone's mass heatsink with waterblocks on a separate loop, I think it'd help the delta T of the system. One of the freezone's main limiting factors is that the mass heatsink gets very warm. Using waterblocks to receive the tec heat and send it off to the radiator should help.


Any suggestions ?

btw, I've read some of the topics here and it's obvious to me that you guys know a helluva lot more than i do about TEC, so please excuse me if i used any terminology incorrectly.
Ultrasonic2, I've seen some of your blocks on utube, nice work man. Do you make any to sell?


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 Post subject: Re: Freezone TECs
PostPosted: Thu Dec 01, 2016 7:59 am 
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Joined: Sat Nov 06, 2010 11:28 am
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TEG's are optimised for GENERATING electricity not cooling a load

There really isn't a tangible way to know exactly what TEC is used in it and therefore what to replace it with. you could take an educated guess though.

I've almost finished making 4 more blocks of my v4 cooler


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 Post subject: Re: Freezone TECs
PostPosted: Thu Dec 01, 2016 5:55 pm 
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Joined: Wed Nov 30, 2016 12:17 pm
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The listing did say something like about being designed for generating power, not heat transfer, but I did run the teg for a few seconds and it did get really cold very quickly.

As far as guessing, I'm stumped. The unit has 3 wired in series on 12V, making them 4V each. Plenty of tecs meet the spec but none of them are 40x40mm!

I can only think like a buisiness would: cost. These TEGs are only about $2 each, and although they may be more efficient at producing current than tecs (and conversely, less efficient at heat transfer than tecs), that doesn't expressly mean they aren't able to perform the task. Considering their cost-effectiveness, I can easily see a manufacturer opting for them over a custom chip. I'm only concerned the overall wattage of 12 of them won't be a lot.

I wired three of the 4.6V tegs in series (not stacked, wired) and applied 12VDC from a 3A bench psu, and together they drew 1.5A. Four similar sets would draw 6A at 12V, that's only 72 watts, less with system inefficiency.

The cpu is an LGA 1366 1st gen i7 960, 130 watts.

Anyone know of a tec that's 40mm and 4-5 volt, 1 - 3A? Preferably a high-temp tec.


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