penetration through filter
[EN 12792:2003, 285]:ratio of particle concentration measured downstream of the filter (expressed in %)
Continue reading →Glossary Terms
perceived air quality (PAQ)
[ISO 16814:2008, 3.33]:quality of the air perceived by the occupants and expressed by the percentage of persons that perceive the air quality as unacceptable (percent dissatisfied).
Continue reading →perfect mixing
(See uniform mixing)
Continue reading →perforated plate
(See flow equaliser)
Continue reading →permissible range
[EN 12792:2003, 287]:range of a physical quantity that satisfies the different parameters for each of the categories of the specified environment.
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