Go Back   Pro/Forums > ProCooling Technical Discussions > Xtreme Cooling
Password
Register FAQ Members List Calendar JavaChat Mark Forums Read

Xtreme Cooling LN2, Dry Ice, Peltiers, etc... All the usual suspects

Reply
Thread Tools
Unread 04-15-2003, 08:49 AM   #1
8-Ball
Cooling Savant
 
8-Ball's Avatar
 
Join Date: Feb 2002
Location: Oxford University, UK
Posts: 452
Default Questions about TEC ratings

Ok, lets take your common 226W TEC.

Does this rating imply that the TEC will be able to transfer 226W of heat, at a greater cost in poewr requirement, or that the TEC will draw 226W of power from the supply and transfer something less than 226W.

I understand that the temperature difference also factors in here, though I'm not exactly sure how. I think that the maximum heat will be transferred for zero degrees temp difference between hot and cold.

I just like to try and get these things straight in my head and any help would be much appreciated.

8-ball
8-Ball is offline   Reply With Quote
Unread 04-15-2003, 07:00 PM   #2
RoboTech
Cooling Savant
 
RoboTech's Avatar
 
Join Date: Sep 2002
Location: Cincinnati, OH
Posts: 229
Default

Hey 8-Ball,

Here is a quote from an article I receltly wrote that might help explain things.

The maximum rated capacity of this TEC is 226 watts, which is referred to as the TEC’s Q-max and defines the maximum amount of heat the TEC can pump from one side to the other when the two sides are at the same temperature (0º differential temperature). In operation, the two opposing sides of a TEC will not be at the same temperature. As the differential temperature goes up, the TECs heat pumping ability will go down. A TEC should be sized so that its Qmax is approximately 2 or 3 times the expected heat output of the processor it is intended to cool. Based on this rule of thumb, the 226 watt TEC used in the MCW462-UHT should be able to cool a processor putting out between 75 watts and 113 watts of heat energy. But... there is more to this story than just Q-max.

There is a lot more TEC theory in the article if you are interested...

Swiftech MCW462-UHT Thermoelectric Cooler review @ Systemcooling.com

I hope that helps.
RoboTech is offline   Reply With Quote
Unread 04-15-2003, 07:10 PM   #3
KnightElite
Cooling Savant
 
KnightElite's Avatar
 
Join Date: Sep 2002
Location: Saskatoon, Saskatchewan
Posts: 294
Default

That's basically right. 226W TEC means best theoretical heat transfer is 226W from cold to hot side.

it will draw close to 400W of power to run at that speed.
__________________
Can anyone else here say that they have a watercooled monster that's 45" tall?
KnightElite is offline   Reply With Quote
Unread 04-15-2003, 07:40 PM   #4
Arcturius
Cooling Savant
 
Join Date: Aug 2001
Location: Chippewa Falls, Wisconsin
Posts: 294
Default

Speed? You mean 'displace that amount of thermal energy'

I'm feeling nitpicky. Sue me.
Arcturius is offline   Reply With Quote
Unread 04-15-2003, 08:34 PM   #5
Since87
Pro/Guru - Uber Mod
 
Join Date: Sep 2002
Location: Indiana
Posts: 834
Default

Very nice article RoboTech.
Since87 is offline   Reply With Quote
Unread 04-17-2003, 08:04 AM   #6
8-Ball
Cooling Savant
 
8-Ball's Avatar
 
Join Date: Feb 2002
Location: Oxford University, UK
Posts: 452
Default

Quote:
Originally posted by RoboTech
Hey 8-Ball,

Here is a quote from an article I receltly wrote that might help explain things.

The maximum rated capacity of this TEC is 226 watts, which is referred to as the TEC’s Q-max and defines the maximum amount of heat the TEC can pump from one side to the other when the two sides are at the same temperature (0º differential temperature). In operation, the two opposing sides of a TEC will not be at the same temperature. As the differential temperature goes up, the TECs heat pumping ability will go down. A TEC should be sized so that its Qmax is approximately 2 or 3 times the expected heat output of the processor it is intended to cool. Based on this rule of thumb, the 226 watt TEC used in the MCW462-UHT should be able to cool a processor putting out between 75 watts and 113 watts of heat energy. But... there is more to this story than just Q-max.

There is a lot more TEC theory in the article if you are interested...

Swiftech MCW462-UHT Thermoelectric Cooler review @ Systemcooling.com

I hope that helps.
Thanks mate.

That cleared a lot of things up. Hope you don't mind if I refer other people to that article if I come across people considering TECs. Lots of useful information.

Thanks again,

8-ball
8-Ball is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 06:56 AM.


Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
(C) 2005 ProCooling.com
If we in some way offend you, insult you or your people, screw your mom, beat up your dad, or poop on your porch... we're sorry... we were probably really drunk...
Oh and dont steal our content bitches! Don't give us a reason to pee in your open car window this summer...