air filter

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air filter

[′er ‚fil·tər]
(engineering)
A device that reduces the concentration of solid particles in an airstream to a level that can be tolerated in a process or space occupancy; a component of most systems in which air is used for industrial processes, ventilation, or comfort air conditioning.

Air filter

A component of most systems in which air is used for industrial processes, for ventilation, or for comfort air conditioning. The function of an air filter is to reduce the concentration of solid particles in the airstream to a level that can be tolerated by the process or space occupancy purpose. See Ventilation

Solid particles in the airstream range in size from 0.01 micrometer to objects that can be caught by ordinary fly screens, such as lint, feathers, and insects. The particles generally include soot, ash, soil, lint, and smoke, but may include almost any organic or inorganic material, even bacteria and mold spores. This wide variety of airborne contaminants, added to the diversity of systems in which air filters are used, makes it impossible to have one type that is best for all applications.

Three basic types of air filters are in common use: viscous impingement, dry, and electronic. The principles employed by these filters in removing airborne solids are viscous impingement, interception, impaction, diffusion, and electrostatic precipitation. Some filters utilize only one of these principles; others employ combinations. A fourth method, inertial separation, is finding increasing use as a result of the construction boom throughout most of the Middle East.

air filter

Any device used to remove solid and/or gaseous pollutants from air.

air filter

i. A filter in the induction system of a reciprocating engine to prevent dust or sand from entering the engine.
ii. A filter in the pneumatic system of aircraft to keep impurities from entering the system.
References in periodicals archive ?
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Researching air filter reviews is fast and easy at this site which is laid out in a simple, yet effective, manner.
Air filters shall be rated MERV 8 or greater as per ASHRAE Standard 52.
Asia-Oceania: Leading the market for automotive air filters
Key Manufacturers involved in this research are American Air Filters, Sogefi Group, Camfil, Freudenberg Filtration Technology, Donaldson, Flanders, CLARCOR, 3M, FLSmidth, W.
Air filters are categorised on the basis of application area as HVAC air filters, gas turbine air filters, automotive air filters, cleanroom air filters and bag house air filters.
We view OnTarget as a single-source solution for range owners, and we are excited to add air filters to our wide variety of range products," said Doug Vander-Woude, OnTarget program manager.
REPLACE THE PRIMARY AND SECONDARY AIR FILTER ELEMENTS WHEN THEY'RE DAMAGED OR TORN, OR IF THE AIR CLEANER INDICATOR STAYS & IN THE RED AFTER A CLEANING.
While providing insights from Gaither on the unique construction of the filters, special features and change intervals, the video also illustrates the airflow patterns in an HD vehicle and dissects the construction of an actual Extreme Clean HD Premium Cabin Air Filter.
The line, DuPont Premium Interior Air Filters, the latest offering from DuPont Separations Solutions, which develops and implements technologies for filtration, is also available with an added Activated Carbon Layer that reduces unpleasant odors inside the vehicle.
OdorGuard Air Filters have been used to control smoke odor in a number of hospital buildings during wildfires in Central Florida; to remove construction sealant fumes from a flight center near Chicago; and to remove smoke odor from laboratory buildings at Los Alamos during the wildfires in New Mexico.
Coatings and air filters group McLeod Russel, whose air condition design consultancy has offices in Solihull, yesterday bought air filter maker Vokes for pounds 7 million from Invensys.