Comparative study on air filter products in air conditioning industry / Ahmad Fairuz Abdul Hamid and Md Adharuddin Md Arif

Air-conditioning is generally defined as a process to make the environment an enclosed space as comfortable as possible. This means to filter the air from impurities and then to cool or heat the purified air. When air went through cooling process, the humidity content of the cooled air will decrease. When the humidity content of the air is below comfortable level, the level of humidity needs to be raised and it is done by a spray g mechanism. The spraying mechanism will add water to the cooled air. In air-conditioning application, the process of purifying the take air is very important aside from cooling or heating the air. In quite a few areas dusty, the air needs to be purify to the highest degree because even a very small impurity can damage the product. An example of industry requiring a very high degree of air purify g is the manufacturing of computer hard disk. A hard disk have a read/write head which moves around a plate spinning at a very high speed (5400 to 7200 rpm). The head does not actually touch the plate because it will damage the data stored on the surface of the plate and also itself. So, the head just hovers above the spinning plate with the gap between them micro meter unit. Thus, even extremely small impurities the take air of the air conditioning system will damage the manufacturing of the hard disk.