(mechanical engineering) An air filter capable of reducing the concentration of solid particles (0.3 millimeter in diameter or larger) in the airstream by 99.97%. Also known as HEPA filter.
high-efficiency particulate air filter
| Sci-Tech Dictionary: high-efficiency particulate air filter |
(′hī i¦fish·ən·sē pər′tik·yə·lət ′er ′fil·tər)
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| Architecture: 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.
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 | Hepa |
| 100 nanometres |
| List of acronyms and initialisms: H |
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 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
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