air filter


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Related to air filter: Air purifier

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 ?
Cabin air filters must be replaced when they get dirty.
Increased Demand for Cellulose Air Filter Cartridges with Nanofiber Surface Layer
There are many styles of HVAC air filters on the market today, though only a few types of commonly used filter media.
Other features of the 42808 air filter, and Wix's other radial model air filters, include a mesh screen on the inside wall diameter for strength and media protection from back-fire.
Capable of significantly extending the shelf life of food products such as meat and poultry, the new sterile air filters have high flow rates and are at least 30 times more efficient than others in the same market.
Universal Air Filter's electronics cooling air filters also satisfy requirements of CE and UL 1950.
The economic effect of this termination of risk was recognized by the Tax Court in American Air Filter v.
com)-- FilterEasy, a subscription-based HVAC air filter company, announced their expansion to Wilmington, North Carolina, as well as the expansion of the office space at their headquarters in downtown Raleigh.
The report covers the present scenario and the growth prospects of the global air filter market for 2016-2020.
M2 EQUITYBITES-December 22, 2015-American Air Filter Acquires California-based Grillo Filter Sales
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.
Highlighting the technology behind the function of a modern cabin air filter, the video is hosted by John Gaither, director of heavyduty engineering for FRAM Filtration.