Have you always wondered what is air cooling? Infact the term air cooling itself
sounds, weird! Doesn't it? Let us make an attempt at first understanding the term
that seems so unusual 'air cooling' and get on with more details on it. The literal
meaning of air cooling is a heat dissipation method. The working of this method is that it allows the surface to be cooled more space so that there can be more and more air flow over that area or then both. The principle underlying here is that the air has to be cooler than the surface or the object itself, from which it is suppose to remove heat completely or in moderation. Because anyways it is believed that heat moves from higher levels to lower levels. If that sounds confusing already to you then read ahead for more details that can offer clarity on the topic.
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Examples of Air Cooling
Examples of air cooling can be like: Electronics, turbines, industries and vehicles. In electronics the most used air cooling method would be in computer systems, CPU cooling. Because the computer primarily functions on the CPU and invariably there is a lot of heat production that needs to be cooled so that the computer can function smoothly, and air acts as a good insulator for the same. Turbines like gas turbines and turbo jets get exposed to a lot of heat generation in the forms of gases that are released from chambers of combustion.Hence; air cooling becomes important to avoid melting.
There can be many ways to eliminate heat produced out from a device, by placing the device in a cool place in an enclosure, or then using a plate cooled by liquid that is connected to a water chiller that is refrigerated. The total amount of heat the device generates, configuration package, and the life span that is expected of the product in addition with various factors determines the optimum heat removal techniques.
Natural currents of air will flow within any enclosure, if kept closed. If you can take advantage of these currents that will save cost on components that are there as long term components. Use a modelling computer package, a designer who is qualified for experiments with placement of a component can even add venting enclosure to conclude any solution that is of the optimum level. In the event of any failure in solutions that can cool the device efficiently, then the possibility of adding a fan arises strongly.
When a decision to add a component to the system like- the fan is taken, it should depend on various considerations. Mechanical operations of a fan make it naturally less reliable than even a system that is considered to be passive. In the case of a small enclosure, the drop in pressure that takes place between the outside and the inside of the enclosure can also in a way limit the efficient working of a fan.