Car Air Conditioning - Car Air Con Information For All Vehicle Air Conditioning…

Experiencing Car Air Conditioning Problems?

Although the average car air conditioning system comprises only 5 main components there are still things that can go wrong during normal operation of the unit. The biggest threat to the system in general is that of excess water building up within the refrigerant that this uses. Under normal circumstances water is produced as the system runs, but this is perfectly acceptable when it is dripping out under the car. It is when moisture becomes free-floating within the system that the real problems arise, with the potential for this to become iced-up and corroded over time. It is perhaps best to explain how this operates so that a better understanding of how these problems may arise can be reached.

Car air conditioning how it works

So, how does car air conditioning work? As the name implies, car air con ‘conditions’ the air. Not only does it cool down the air, but it also reduces the moisture content, or humidity, of this. Regardless of where they are installed all air conditioning units work in much the same way, but we shall focus on vehicle air conditioning here and cover the main principles.

Car air conditioning works on two main principles; these are evaporation and condensation, and these stages are followed by compression and expansion. These principles can be explained as follows:

Evaporation: This is a type of vaporisation of a liquid that occurs only on the surface of the liquid.

Condensation: This can be summarised as the reverse of evaporation and is the change in the state of matter from a gas to a liquid.

Heat of Compression: An example of this can be seen in the use of a bicycle pump. In pumping air into the tyres not only has the air become compressed but this has also caused the air molecules to push closer together which, in turn, results in heat being given off with the resulting friction.

Expansion: This is the tendency of matter to change in form in response to temperature; in this case from a refrigerant liquid to a vapour.

For some further information concerning problems and how they may be resolved please see also Car Air Conditioning Repair