DescriptionHEPA Filter diagram fr.svg	English: diagram showing the main parts of a HEPA filter on the large diagram; its operation is shown on the 3 smaller diagrams: *the thick brown/tan lines represent fibers in the filter medium. *the blue lines represent air flow. *The dark circle represents a particle (dust, bacteria, spore, etc.) *the dotted red line represents the trajectory of the particle; consider that as soon as a particle comes within one radius of a fibre it adheres to it. *in the case of diffusion, the particle (usually 0.1 µm or smaller) has such a trajectory because of the collision with gas molecules. On the 100 nm to 1 micron scales that are the most challenging for filters, it is helpful to think of air as a viscous fluid like molasses. As the fluid flows through the filters, particles are carried around the fibers of the filter medium, for the most part. Inertial impaction: Larger particles (>1 micron) may be massive enough to continue to move in nearly a straight line (Newton's Law), as the flow is diverted around a fiber. Interception: Smaller particles are not much affected by inertia, but, if they are carried within one particle radius of the fiber, they will be intercepted by it. Diffusion: Still smaller particles (<100 nm) move randomly among streamlines as they are buffeted by collisions with molecules. A particle along a streamline that approaches a fiber very closely may be knocked against the fiber by such a collision. English: This image was created as part of the Philip Greenspun illustration project.
Date	10 septembre 2010, 18:24 (UTC)
Source	HEPA_Filter_diagram_en.svg through HEPA_Filter_diagram_de.svg
Auteur	HEPA_Filter_diagram_en.svg: LadyofHats HEPA_Filter_diagram_de.svg: Rotkäppchen derivative work: The RedBurn (talk)
Autorisation (Réutilisation de ce fichier)	Public domainPublic domainfalsefalse Cette œuvre a été placée dans le domaine public par son auteur, The RedBurn. Ceci s’applique dans le monde entier. Dans certains pays, ceci peut ne pas être possible ; dans ce cas : The RedBurn accorde à toute personne le droit d’utiliser cette œuvre dans n’importe quel but, sans aucune condition, sauf celles requises par la loi.

Cette image a été retouchée, ce qui signifie qu'elle a été modifiée par ordinateur et est différente de l'image d'origine. Liste des modifications : Translation to French. L'image d'origine se trouve ici : HEPA Filter diagram en.svg: . Modifications effectuées par The RedBurn.

Journal des téléversements d’origine

This image is a derivative work of the following images:

• File:HEPA_Filter_diagram_en.svg licensed with PD-user
  • 2008-09-01T08:06:29Z LadyofHats 607x544 (404084 Bytes) corrected particle size, aded average size of particles and trajectory on difuccion
  • 2008-08-15T21:55:12Z LadyofHats 607x544 (393067 Bytes) darker text
  • 2008-08-14T21:17:27Z LadyofHats 607x544 (393021 Bytes) this is a corrected version of the original
  • 2008-08-14T21:16:33Z LadyofHats 607x544 (327559 Bytes) THID VERSION CONTAINS LABELS AS TEXT!
  • 2008-08-13T16:01:32Z LadyofHats 607x544 (391421 Bytes) {{Information |Description=diagram showing the main parts of a HEPA filter and the way it works. |Source=Did myself using this sources: [http://people.seas.harvard.edu/~jones/lab_arch/nano_facilities/hepa.gif], [http://www.sa

Téléversé avec derivativeFX