Air Conditioning Filters

Air Conditioning Filters

Why do we need air filtration?
The air around us consists of a mixture of gases, principally Oxygen and Nitrogen. However, it also contains particulate material and gases., which are the by-products of nature and man-made industrial processes. The main sources of air contamination are particulates produced by exhaust fumes from traffic and other combustion processes, carbon, oil, fly ash from stack and chimney emissions., construction and demolition.

Natural causes can be such things as elemental erosion of the landscape and buildings as well as volcanic eruptions etc. Others include sea salt, sand, pollen, moulds and bacterial spores. Our precious air is far from clean.

The principle of filtration.
Air filters are products that remove the unwanted particulate from an air stream as the particulate laden air passes through them. Air filters remove particulate by capturing it in or on the filter media., this is the material that makes up the filter element. There are four different processes responsible for this capture; Impingement, Interception, Diffusion and Straining. Many filters employ several of these mechanisms but one usually predominates.

The importance of air filtration
Air filtration is the mechanism that provides us with the means to provide a suitable level of particulate and molecular cleanliness to meet the following criteria:

To prevent the build-up of contaminants on heater or condenser coils and other ventilation system parts

To prevent the ingress or emission of hazardous substances

To protect expensive of delicate machinery from avoidable wear and therefore replacement or substantial maintenance costs

To provide healthier and more comfortable living and working conditions for occupants of buildings

To reduce risk of infection in hospital ‘critical areas’ and other such environments

To prevent the contamination of our foods, pharmaceuticals and delicate electronics during manufacture