got my 226watt peltier up

[wolfgang]

I have the swiftech mcw462 with 120gph pump. Heater core water temp is 30c cpu is 10idle at 1.97vcore. Is this good?

[twiggy]

What are you using to power it?

[wolfgang]

antec 350watt psu

[twiggy]

Your powering the TEC with that? Whats your 12v look like?

[wolfgang]

Its at 11.7 15amps that not enough?

[\/icious]

i thought that the 226 needed 25 amps?

[Tedinde]

Its at 11.7 15amps that not enough?

15 amps is not enough, the antec will probably handle it though. 13.2 volts is the sweet spot for mine.

Is the PS heating up bad??

[Jabo]

Originally posted by wolfgang
Its at 11.7 15amps that not enough?

You may just be able to pull that one off since you are using it exlclusively for tec powering.
Your TEM (proper name for the stuf - ThermoElectric Modlule) is rated for Vmax=15v and 226 watts of total power consumption - you calculate amperages yourself ;)

At 12v it needs 18.9A - you are running your Antec way out of specs for 12 line but, as I said above, it's 350W PSU and it may just pull it without exploding :)

One advice, make sure your connections are done perfectly (terminal block supplied with my MCW500P-T literally burnt!
You ARE running massive current through it after all!

[saaya]

10°C idle? tat sounds bad for a 226W tec...

[Jabo]

Originally posted by Tedinde
15 amps is not enough, the antec will probably handle it though. 13.2 volts is the sweet spot for mine.

Is the PS heating up bad??

For all Vmax15volt TEMs 13volt is the best choice between performance and 'self heat' generated.
It doesn't matter if you have one h331 of a WC system which can handle additional heat load :) - in such a case run them at max 15 volts or even more, but not much or they will fail catasrophically (both sides heating or hot/cold sides reversed).

[wolfgang]

I have a psu on the way that has 25 amps so thats good. Also I getting a water chiller has like 10 55watt TEMs in it. Its rated to remove 220 watts of heat to ambiant temps. Sounds perfect for my TEM. Right now Iam idle at 8c with 2vcore. Water temps are at 31.3c.

[eXtenz]

thats fairly decent what all are you cooling in the wcing? my friend i just finished a system for that idles anywhere from 2-7c depending on ambient, qcon it was 2c, my house was 7c, load around 13-15c...... 220w @ 13.8v with a 30a dedicated psu... 2500+ @ 2.7ghz 1.9v just cpu wced.... water is 33-35c

[Jabo]

My temps are in my sig:)

[full loaded]

well I know I am gonna say something stupids but I just want to know, I thought 226W pelts were runnning on 24V now I know that we can lower de V... so the water on the hot side gets less hot but will 12V and more A give the same temps like 24V and less A?

[Jabo]

Originally posted by full loaded
well I know I am gonna say something stupids but I just want to know, I thought 226W pelts were runnning on 24V now I know that we can lower de V... so the water on the hot side gets less hot but will 12V and more A give the same temps like 24V and less A?

You right man, there are TEMs that have Vmax 24v as well as ones that have Vmax 5volts..., it's all there to be bought if you only want.

The ones used in pc cooling are usually Vmax 15volts because 12-13volts is their 'sweet spot' for performance v. heat generated.

[hedge]

Here is a question for jabo (you seem to know what you are talking about). What matter the most on a pelt? a higher consumption rating Ex: 226 watt 172 watt or is it whatever generates the lowest temperatures that matters? After all, a 100 watt pelt with air cooling will frost up versus a 226 watts pelt on air will barely produce condensation.

[Jabo]

Originally posted by hedge
Here is a question for jabo (you seem to know what you are talking about). What matter the most on a pelt? a higher consumption rating Ex: 226 watt 172 watt or is it whatever generates the lowest temperatures that matters? After all, a 100 watt pelt with air cooling will frost up versus a 226 watts pelt on air will barely produce condensation.

As you quite rightly pointed out it all depends on cooling used on 'hot' side.

I can asure you that it is possible (for av. ocer) to 'frost' 'cold' side of 226 module using air cooling (get some 190CFM Black Delta and duct it properly using sth like SLK900 or the newest Swiftech's heatsink).

The next extremely important thing is what do you want to cool and how low with temps you want to go.

The figures you are quoting are Qmax numbers which describe max amount of heat a unit can pump between sides at it's rated max voltage and amperage.

Power consumption is dependant on it but gets calculated by multiplication of Voperational and Idrawn by unit (the lowewr volts the less amps module takes).

Quite important is dTmax number which basically describes efficiency of a module (it's max temp diff between sides @ max volts/amps and no heat being pumped).

For ocing the most important is amount of heat a module can remove (I am not talking hot side cooling here which governs CPU/GOU/NB temps in the end - 80w TEC with 'hot' side kept @ -10C does better job than 226w unit with 'hot' side kept at 30C :) ).
Assuming we have 'hot'side kept at lets say 30C the higher rated Qmax module will keep CPU colder.

The only thing is that the higher the rating (Qmax) the more 'own' heat TEC pumps into your water loop.

To summarise get as high rated modules as possible provided you are able to dissipate all the heat TECs are producing (226w TEC cooling overvolted P4 can dump as much as 400watt of thermall energy!!!!)

Hope it sheds some light on the subject
]jr[ is the real expert on the subject :)

Also look in 32w TEC thread here.

[hedge]

Thanks jabo. I believe that answered all my questions. Sorry to hyjack your thread, wolfgang.

[Jabo]

pc ice -> that's standard TEC sold by almost every Extreme Cooling PC on-line shop :)
They are the best for 12volts.
What are you cooling with this bIg bOi?