View Full Version : Is it possible to get a 24V tec ?
Bra!nFreeZe^
10-31-2003, 06:09 AM
Well the headline says everything :) is there such a thing as 24V tecs ?
Bra!nFreeZe^
10-31-2003, 06:17 AM
AND where can u get them if they exist :)
Colin
10-31-2003, 08:00 AM
Bra!nFreeZe^ the most popular 24V TEC are the 40x40mm 172W ones and they run on 24V (while drawing about 11 amps). they're the perfect size/replacement for those 80W TEC's in the common GPU\pelt blocks. :)
I bought mine from DangerDen (http://www.dangerden.com/mall/Pelts/peltiers.asp) but I'm pretty sure you can get them elsewhere cheaper if you look around. As I mentioned in the other thread I picked up a Meanwell S300-24 (http://www.meanwell.com/product/sp-300/default.htm) to power that sucker. ;)
Bra!nFreeZe^
10-31-2003, 08:04 AM
Well im going to use it for my cpu but will it be enough ?
Colin
10-31-2003, 10:00 AM
Honestly that depends... What processor are you running?
If you're thinking about TEC'ing your CPU go all the way and get yourself a 226W pelt as that would probably give you better tepms and allow you to overclock higher.
Bra!nFreeZe^
10-31-2003, 10:22 AM
Im running an XP2500 but the 172 watts is the biggest that i can find that runs @ 24V
Colin
10-31-2003, 10:48 AM
Why do you need it to be a 24V TEC, you have a 24V PSU already?
I would think 172W would be enough to cool you to below the dew point but I doubt you'll go subzero. You will have to insulate your system.
Bra!nFreeZe^
10-31-2003, 11:16 AM
i have a 24V psu check out the nice tec psu thread! :)
Colin
10-31-2003, 11:21 AM
Oh! :) Sorry I didn't notice!
A 172W TEC should be fine for your processor, what are you going to cool the TEC with? Plain or chilled water?
Bra!nFreeZe^
10-31-2003, 11:26 AM
Maze 3 cooled by a black ice extreme with a delta extreme scream 120 mm
Bra!nFreeZe^
10-31-2003, 11:27 AM
with a fanbus of course ! ;)
Colin
10-31-2003, 12:30 PM
Honestly I'm not sure if that's going to be enough to keep everything nice and cool.
Currently my water loop is only cooling the Northbridge and videocard (which uses an 80W TEC) and its cooled with a BIX with two 120CFM Delta's and the water temps usually rise to about 30ish degrees after about an hour of use and if I leave it on for a long time the water wil go up to 40! :( Haven't had time to set up a chiller yet myself but I think you may need to get multple rads to keep things functioning properly.
sandman
10-31-2003, 01:08 PM
Originally posted by Colin
Honestly I'm not sure if that's going to be enough to keep everything nice and cool.
Currently my water loop is only cooling the Northbridge and videocard (which uses an 80W TEC) and its cooled with a BIX with two 120CFM Delta's and the water temps usually rise to about 30ish degrees after about an hour of use and if I leave it on for a long time the water wil go up to 40! :( Haven't had time to set up a chiller yet myself but I think you may need to get multple rads to keep things functioning properly.
I think a songle good sized heatercore would be enough, but also remember, the warmer the water, the more efficiant the heat transfer.
Bra!nFreeZe^
10-31-2003, 02:45 PM
Well what if i plan to use 2*172 watts tecs then i have to get a new rad...right ? but with one im more than sure that this black ice extreme will get the job done!
KnightElite
10-31-2003, 04:33 PM
One thing to keep in mind here, is that even though it is a 24V TEC, it's ideal operating point is ~18V. So a 24V supply may not be the best option.
Bra!nFreeZe^
11-01-2003, 07:07 AM
The person i bought my 24V psu of he is using a 24V 172 watts tec...and his cpu at full load is 2 degrees C
KnightElite
11-01-2003, 11:25 AM
Alright, just keep in mind that it will not be operating at it's most efficient point.
Bra!nFreeZe^
11-01-2003, 11:41 AM
Well how come its called a 24V tec ? not meant in an offensive way or anything i just think that its weird
KnightElite
11-01-2003, 11:49 AM
Because that is it's Vmax. Any higher voltage than 24V accross the TEC, and it will stop being a heat pump, and just become a heater (the reason for this is that the resistive heat output becomes strong enough to overcome the peltier effect, making the TEC useless).
So, at 24V you are operating at about the least efficient point for the TEC, because, while it is pumping 172W from one side to the other, it is also generating Imax * Vmax heat, which is 24V * 11A = 264W. While, when running at 18V, you get about 129W of cooling power, but only ~150W of heat produced.... much more efficient.
Bra!nFreeZe^
11-01-2003, 03:21 PM
hmm it says that the Black Ice extreme is capable of removing 400watts of heat
KnightElite
11-01-2003, 03:23 PM
Heh.... yes. But it doesn't say at what temperature that will keep the load. You should have mentionned the BIX earlier as well, I would recommend a better radiator. The D-TEK heatercore is a good one, since it comes with a shroud. It is vastly superior to the BIX.
Bra!nFreeZe^
11-01-2003, 04:45 PM
Hehe allright well thx for all the good answers! if i have further questions ill just contact u on IRC ;)
Just one 'lil point here.
If you don't mind energy consumption (electricity) and your WC system is capable of removing all the heat it's the best to run TEC's @ their rated voltages.
Eficiency issue is perfectly true but does it matter? We want it as cold as it can get and having capable system (BIX is not able cope unless you use very carefull shrouding and two push-pull screamers paired with high head pump - bixes are VERY restrictive) the way to go is to run TECs at their rated Vmax :)
.
My advice is to get another BIX (since you already got one) and go parallel (make sure you clean your existing BIX beforehand)
Bra!nFreeZe^
11-03-2003, 06:00 AM
well i cant have to BIX's in my case (coolermaster) but i was wondering...what about 1 BIX and one black ice micro 2 dont you think that it will be enough to remove all that heat ? or can a heatercore single handed cool it ?
Brainfreeze, mate, mixing two different rads in one setup, and to add to it so restrictive ones, is not a good idea. Forget about parallel in this scenario unless you are able to regulate flows trough each of them to make them equal.
Serial scenario would require a strong pump (with big enough head, flow rate is not so important).
Yes heater core would be able to do te job - there's a thread here about which one to go for, look for The Dude's o Weapon's choices (Weapon's one is a complete solution with shrouds and double fans supplying buckets of cooling)
Bra!nFreeZe^
11-04-2003, 04:49 AM
I just saw that thread yesterday! will the DTEK heatercore be sufficient ? with just one fan ?
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