Air Filters - Primary Filtration

A particulate air filter is a device composed of fibrous, or porous materials which removes particulates such as smoke, dust, pollen, mold, viruses and bacteria from the air.

Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone.

Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines.

Some buildings, as well as aircraft and other human-made environments use foam, pleated paper, or spun fiberglass filter elements.

Air ionizers, use fibers or elements with a static electric charge, which attract dust particles.

The air intakes of internal combustion engines and air compressors tend to use either paper, foam, or cotton filters.

The technology of air intake filters of gas turbines has improved significantly in recent years, due to improvements in the aerodynamics and fluid dynamics of the air-compressor part of the gas turbines.