PDA

View Full Version : COLD air


Kato
01-07-02, 08:09 PM
hey guys, i just wonder, other than AC, is there any device out there that can take the room temp air, cooled it, then exhault it out? are there any computer cooling stuff work this way?:rolleyes:

azhari
01-07-02, 08:27 PM
Refrigerator ;)

Yodums
01-07-02, 08:41 PM
Originally posted by azhari
Refrigerator ;)

How would a refridgerator do this exactly?

flounder43
01-07-02, 08:48 PM
It is the law of thermodydamics ...the heat has to go somewhere...

The refridgerator obsorbs heat on the inside of the fridge, and gets rid of it on the outside. It does this by compressing gas, shedding the extra heat(high side) and decompressing the gas on the inside to obsorb heat on the inside(low side). Then the process repeats...

Dabljuh
01-07-02, 09:13 PM
Basically the same thing a Peltier does?

Would one use a Peltier just for Air cooling?

azhari
01-07-02, 11:33 PM
Originally posted by Dabljuh
Basically the same thing a Peltier does?

Would one use a Peltier just for Air cooling?
You could use a peltier for air cooling, but its not done because it isn't as efficient as other methods when applied to larger volumes.

3DMike
01-07-02, 11:46 PM
This could bve just what you're looking for:

air chiller (http://www.hardwareoc.com/airchillerz.php)

It uses a TEC a couple of heatsinks and fans to squirt cold air into your case. I haven't got round to building one myself yet as it woulnt fit in my current case. If you have any luck let me know how you get on....

Mike

CrystalMethod
01-07-02, 11:49 PM
A dehumidifier should work as well, but you probably won't see any noticable drops in temp unless your system is right next to the thing. A/C units work on this principal (Removing the humidity from the ambient air). The effect is the same as when you sweat, Bong cooling, albeit on a lesser degree. Dehumidifiers are great in the summer to stabilize temps in a closed room, but I haven't noticed any difference during the winter months.

Monaco
01-07-02, 11:51 PM
I've tried about a billion different approaches to cooling your intake air (fridge, peltier air chiller, dry ice, etc.) and all I have found is:

A. It's nearly impossible to cool incoming air without having serious condensation problems. Like, water all over your case kind of problems. I'm sure there's a way around it, but I sure didn't find it.

C. The basic peltier-powered air-chiller is horribly ineffeciant, and expensive. (min)2 152 watt pelts, plus power supply to run them, plus sundry parts from hardware store, plus build time...not worth it for the 2 degrees you get.

B. To get more than a degree or two, you need SERIOUS effort. WAAAY more effort and cost than it is worth; I figure a nice pelted H20 system would be about the same cost and more reliable.

My solution to all this was to move my PC so it faces a window- since it's winter here, I can crack the window and get (thanks to some cheapo PVC tube I found) radically lowered temps.

Last nite I ran at 29F full load, just with air cooling. Did I mention it gets COLD here at night?:D

3DMike
01-08-02, 12:35 AM
This could bve just what you're looking for:

air chiller (http://www.hardwareoc.com/airchillerz.php)

It uses a TEC a couple of heatsinks and fans to squirt cold air into your case. I haven't got round to building one myself yet as it woulnt fit in my current case. If you have any luck let me know how you get on....

Mike