This is a Quality image. Click here for more information.

File:HEPA Filter diagram en.svg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(SVG file, nominally 607 × 544 pixels, file size: 343 KB)

Captions

Captions

HEPA Filter diagram

Summary[edit]

Description
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
Source Did myself using this sources: [1], [2], [3], [4], [5], [6], [7], [8], [9].
Author LadyofHats
Permission
(Reusing this file)
Public domain This work has been released into the public domain by its author, LadyofHats. This applies worldwide.

In some countries this may not be legally possible; if so:
LadyofHats grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Other versions

[edit]

  • অসমীয়া
    অসমীয়া
  • English
    English
  • తెలుగు
    తెలుగు
  • Deutsch
    Deutsch
  • français
    français
  • русский
    русский
  • español
    español
  • ಕನ್ನಡ
    ಕನ್ನಡ
  • हिन्दी
    हिन्दी
  • ਪੰਜਾਬੀ
    ਪੰਜਾਬੀ

Quality image

This image has been assessed using the Quality image guidelines and is considered a Quality image.

العربية ∙ جازايرية ∙ беларуская ∙ беларуская (тарашкевіца) ∙ български ∙ বাংলা ∙ català ∙ čeština ∙ Cymraeg ∙ Deutsch ∙ Schweizer Hochdeutsch ∙ Zazaki ∙ Ελληνικά ∙ English ∙ Esperanto ∙ español ∙ eesti ∙ euskara ∙ فارسی ∙ suomi ∙ français ∙ galego ∙ עברית ∙ हिन्दी ∙ hrvatski ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ Jawa ∙ ქართული ∙ 한국어 ∙ kurdî ∙ Lëtzebuergesch ∙ lietuvių ∙ македонски ∙ മലയാളം ∙ मराठी ∙ Bahasa Melayu ∙ Nederlands ∙ Norfuk / Pitkern ∙ polski ∙ português ∙ português do Brasil ∙ rumantsch ∙ română ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ shqip ∙ српски / srpski ∙ svenska ∙ தமிழ் ∙ తెలుగు ∙ ไทย ∙ Tagalog ∙ Türkçe ∙ toki pona ∙ українська ∙ vèneto ∙ Tiếng Việt ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ +/−

Translate this file This SVG file contains embedded text that can be translated into your language, using any capable SVG editor, text editor or the SVG Translate tool. For more information see: About translating SVG files.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current18:41, 19 March 2019Thumbnail for version as of 18:41, 19 March 2019607 × 544 (343 KB)দিব্য দত্ত (talk | contribs)Reverted to version as of 02:11, 25 February 2013 (UTC)
18:40, 19 March 2019Thumbnail for version as of 18:40, 19 March 2019607 × 544 (316 KB)দিব্য দত্ত (talk | contribs)Trying to remove a blue block near the word "প্ৰৱাহ"
02:11, 25 February 2013Thumbnail for version as of 02:11, 25 February 2013607 × 544 (343 KB)Ysangkok (talk | contribs)scour
08:06, 1 September 2008Thumbnail for version as of 08:06, 1 September 2008607 × 544 (395 KB)LadyofHats (talk | contribs)corrected particle size, aded average size of particles and trajectory on difuccion
21:55, 15 August 2008Thumbnail for version as of 21:55, 15 August 2008607 × 544 (384 KB)LadyofHats (talk | contribs)darker text
21:17, 14 August 2008Thumbnail for version as of 21:17, 14 August 2008607 × 544 (384 KB)LadyofHats (talk | contribs)this is a corrected version of the original
21:16, 14 August 2008Thumbnail for version as of 21:16, 14 August 2008607 × 544 (320 KB)LadyofHats (talk | contribs)THID VERSION CONTAINS LABELS AS TEXT!
16:01, 13 August 2008Thumbnail for version as of 16:01, 13 August 2008607 × 544 (382 KB)LadyofHats (talk | contribs){{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.sage-earth-sciences.com/hepa/clo

You cannot overwrite this file.

File usage on other wikis

The following other wikis use this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:HEPA_Filter_diagram_en.svg&oldid=846085691"