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Cooling

This version was saved 16 years, 6 months ago View current version     Page history
Saved by PBworks
on September 11, 2007 at 9:20:55 am
 

What it is -

 

A system of fans and/or liquid filled pipes and heat sinks that draw heat away from the processor, Graphics card, RAM, and anything else that generates it and out of the case

 

How it works -

 

Fnas and or cooling pipes and heat sinks draws heat away from the processor, Graphics card, RAM, and anything else that generates it and out of the case.

 

 

The Main ways of cooling a system is heat sinks, which is a large metal block with many folds in it, which greatly increases the surface area. This allows the heat to be transferred faster from the hot area to the air

 

This brings the next step and another important component in the cooling system - the fan. The processor/card fan take the hot air hereated by the heat sink and blow it away, allowing the heat sink to allow heat to continue down its gradient via the 2nd law of thermodynamics and keeping the heat generator cool. Then the case fans circulate the air, taking in cool air and blow out hot, creating a current that hlps disperse heat.

 

To be effective, the heat transfer must reach an equilibrium - the same amount of heat being generated is being dispersed. If more heat is being dispearsed, that is a waste of energy, but if it is the other way around, the part in question could melt.

 

There are many things that could hurt the ability of the computer to cool itself. dust, caught in the computer for years, can build up and insulate the parts, holding heat in. also, the air current the fans are making could actually hurt, as it can create whirlpools of hot air. It is important to clean out your computer and adjust the fans porperly, the copmuter could overheat, or just have too much heat can cause more wear and tear on all the parts.

 

if the heat in a critical part has approached a dangerour level, thermal sensors will pick up the value of heat and shut down the copmuter, or throttle back the lectricle usage of the part.

 

http://en.wikipedia.org/wiki/Computer_cooling

http://www.xoxide.com/computer-cooling.html

http://www.endpcnoise.com/cgi-bin/e/computercooling.html

http://www.halfbakery.com/category/Computer_3a_20Cooling

http://www.itweek.co.uk/personal-computer-world/features/2166882/keeping-cool

http://www.weidai.com/black-holes.txt

 

History of cooling -

 

 

In the early days of computer cooling, when vacuum tubes were still new, cooling wasn't that important, as electronic parts could used at high tempuratures. However, as more vacuum tubes were used, th vacuum tubes themselves needed cooling, and lots of it. Air conditioning and liquid cooling were used to try to cool the tubes down.

 

However, when transitors were invetned in the 60s, the need for newer cooling was apparent, as the transitors generated less heat but in a smaller area, and also were more tempuriture sensitive.

 

Computers sometimes got there own floors, so that they could make maximum use of air conditioning system, and other components, like disks, were put in different rooms. Hard drives, though more effecient per size than tape drives, were much more temperature sensitive.

 

Intgrated circuits, or chips, generated even more heat per area. More compact fans and heat sinks were used. However, this wasn't always enough, and liquid cooling was born. Components were assembaled around a large heat sink, around which water could flow, easily riding the system of heat.

 

http://ezinearticles.com/?History-of-the-Computer:-Cooling,-Part--1-of-2&id=170426

http://ezinearticles.com/?History-of-the-Computer:-Cooling,-Part--2-of-2&id=170428

 

Specilized Products

 

Compainies like Barber-Nichols manufactor specilized cooling parts for very advanced computer systems - supercomputers.

 

http://www.barber-nichols.com/products/specialty_products/computer_cooling_pumps/default.asp

 

Most large computer companies don't design there own cooling systems, but outsource them to other copmanies, like Troy

 

http://www.appleinsider.com/articles/04/08/06/exclusive_liquid_cooled_power_mac_g5_development_details.html

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