Computer Cooling

**Paul** · 19-01-2009

Computer Cooling

Introduction :

Computer cooling is the process of removing heat from computer components.A computer system's components produce large amounts of heat during operation, including integrated circuits such as CPUs, chipset and graphics cards, along with hard drives. Overheated parts generally exhibit a shorter maximum life-span and may give sporadic problems resulting in system freezes or crashes.This heat must be dissipated in order to keep these components within their safe operating temperatures, and both manufacturing methods and additional parts are used to keep the heat at a safe level. This is done mainly using heat sinks which dissipates heat, fans and with some other technology.

case cooling

A good PC Case will provide good heat management with addition fans support.,If the air around CPU is too hot then best CPU heat sink is useless. The hot air obviously needs to be evacuated from the case. All computer cases come with a fan pre-installed in the power supply; if this fan isn't sufficient, you need to install an additional fan. Acrylic cases may look better but they will not cool as well. Aluminum has slightly better heat transfer characteristics than steel (the two most commonly used case materials) but either material will work fine.

Case Materials : Steel Cases
Thermal Conductivity: Moderate
Aesthetic Appeal : Low
Cost : Low

Case Materials : Aluminum Cases
Thermal Conductivity : High
Aesthetic Appeal: Moderate
Cost : High

Case Materials : Acrylic Cases
Thermal Conductivity : Low
Aesthetic Appeal : High
Cost : Moderate

Most manufacturers recommend bringing cool, fresh air in at the bottom front of the case, and exhausting warm air from the top rear

case air cooling types :

ATX case cooling
BTX case cooling
fan duct case cooling

So important point is airflow .

ATX

With a positive-pressure system , the inside of your case will stay cleaner because the only air entering the case will be filtered and the extra air that isn’t exhausted by the exhaust fans will blow out through cracks and vents in the case.

ATX

For a negative air pressure system, the goal is to have more air being forced out of the case than is being forced in. With a negative pressure system, the vacuum inside the case will pull dirty air in through those same cracks and vents. A negative pressure design however will result in better cooling because it keeps a constant stream of air moving through the case at all times.Remember that air is usually exhausted through a top-mounted blowhole fan and by the rear fan(s). This leaves the front and side for intake fans.

**Paul** · 19-01-2009

The Fans

The proper choice of fan is essential for achieving cooling performance, while keeping the noise of your computer low.More advanced technologies evolve, the more frequency of operation which increase the heat need to maintain temperature . As a result, we need more fans in a case of computer:

On the processor
On the processor on the graphics card
On the chipset of the motherboard
On the box itself

If your computer includes a dozen fans, it is essential that they are silent. The type of bearing used has a major influence both on noise and on reliability of the fan. Mainly two types fan of bearing used : Ball bearing and sleeve bearing. Generally speaking, ball bearing fans are more expensive, last longer, but are louder than sleeve bearing fans.

The cheapest sleeve bearing type simply consists of a ring made of a porous material dipped in lubricant.The fan axis rotates inside this ring. After prolonged operation, the lubricant will be used up, and the fan will become noisy and eventually fail.

One bearing is not enough to stabilize a rotating axis. Fans have two bearings, and many of the "ball bearing" fans actually have one ball bearing, and one sleeve bearing.

fans come in 3 sizes: 80 mm, 92 mm, 120 mm dimensions .

Some fans are include small diodes to illuminate. In any case, you can choose whether to use or not to use this type of fans using its menu software; also some can work with sensory ability .

blue illumination

Airflow:
This is the amount of air that the fan is able to stir.Here the value is given between 30 and 50 because the fan to a variable speed, which affects its capacity in terms of throughput.

Sound level:
Expressed in dB, the noise level gives an idea about the noise that will generate the fan. Attention as 3 dB more simply double the noise .

blowers

Regular fans are more useful for large area where the air flow is in the same direction as the motor's axis. Radial fans are commonly referred to as blowers or centrifugal fans. They feature a large diameter air intake on one (large) side, and an smaller air exhaust on the flat side. This results in a fast, dense airflow over a small area.

**Paul** · 19-01-2009

The fans attached to a radiator.

In case large radiator ( of aluminum )used with big fan over it. This type of cooling system is widely used to cool the processor.

Thermal paste

Thermal paste has used to improve the heat between processor and radiator where part coming into contact with the processor .It should not remove in any case .

Different types of radiator:

heatsink radiator

Aluminum is the most often used because it has a good ability to heat and is inexpensive. Copper is better but also more expensive.Some radiators are made of aluminum and copper closer to the best of the best value for money.
You can select your type of radiator .Radiators nickel compounds are made of copper or aluminum, nickel is used a thin layer to avoid oxidation.

heatsink radiator with Copper and Aluminum

Dust

The fans has mixed the air which contains dust that accumulating on the fans. Their performances are set to low. Dust acting as a thermal insulator and impeding airflow, thereby reducing heat sink and fan performance. To avoid this, they should be cleaned regularly.

Another option is to set up filters dust . Cleaning is easier and the fan stays clean. performance will not get affected .

Fastening system fans.

Due to its function, inevitably produces a fan vibration. The fans are fixed with screws on the case, the vibrations are transmitted to him and may cause discomfort additional hearing.This is rubber gasket. This element will replace the screw to isolate vibration.

Rubber Gasket

Rubber Gasket tied to Case with fan

Temperature

The chipset on this motherboard is a component heating more or less, on that basis, the manufacturer decides whether to establish a fan. This type of fan small is often a source of noise pollution.

The use of fan provides a good cooling. Of course, depending on the heat to find a fan more or less power will be useful.To monitor the temperature of your sensitive components and the speed of your fans, you can use the software

Evolution of devices will help you as some devices also allow you to check the speed of your fans and different temperatures. They can even regulate the speed of the fans. With the help of one or more buttons and a rotating display, device can easily monitor all temperature elements. also new age cooling technology is becoming more important which are not discuss here

Advanced cooling