HEPA filter


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HEPA filter

[′hep·ə ‚fil·tər]
(mechanical engineering)

HEPA filter

A high efficiency particulate absolute filter capable of trapping and retaining at least 99.9% of asbestos fibers greater than 0.3 microns in length.
References in periodicals archive ?
From the field test result shown in Figure 5(a), higher particle counts for 3 different face velocity cases occur in the vicinity outside the coverage of HEPA filter such as the region near wall (point 1 and point 2) and the corner regions of return air grille (point 3).
Some HEPA filters capture small particles; most electrostatic systems report high efficiency levels at this range.
of activated carbon mix to control chemicals, fumes, odors, gases; and controls particles with the HEPA filter.
To verify the efficiency of HEPA filters, testers replaced the one in the Miele with a non-HEPA filter and ran the same tests.
The materials were an "AQF" media provided by AQF Technologies, Charlotte, NC, a bulk packed carbon-permanganate zeolite bed, a pleated carbon-impregnated paper material and a HEPA filter with a slurry-coated polyester prefilter.
Testing shows that bagless vacuums equipped with only a HEPA filter and without Sealed System technology, do not effectively prevent particle emissions during vacuuming," said Scott Lombardi, Director of Floor Care for Miele.
3 micron) HEPA filter that ensure ultra clean dry air; a direct drive design that eliminates belts and tensioning devices, effectively lowering maintenance and repair costs; a compact design for easy installation; a high-density polypropylene blower enclosure designed with noise-abating features.
If you have an allergy to airborne particles in your house, then closing windows, using dust-free linens and covers for your bedding, and using a HEPA filter (which stands for high-efficiency particle air filter) will help you, say the experts.
Freudenberg, for instance, developed a synthetic microfiber HEPA filter many years ago for one particular application in the nuclear industry.
This system draws airborne powders away from a workstation into a containment HEPA filter (99.
The air is then forced through the pleated HEPA filter, designed to trap over 99 percent of airborne pollutants including microscopic particles like smoke, dust and mold spores.
The portable air scrubber uses a HEPA filter rated at 99.