{"id":1215,"date":"2016-09-06T13:44:09","date_gmt":"2016-09-06T13:44:09","guid":{"rendered":"https:\/\/www.afprofilters.com\/?page_id=1215&lang=fr"},"modified":"2022-07-21T14:39:53","modified_gmt":"2022-07-21T14:39:53","slug":"les-principes-de-la-filtration-dair","status":"publish","type":"page","link":"https:\/\/www.afprofilters.com\/fr\/expertises\/les-principes-de-la-filtration-dair\/","title":{"rendered":"Les principes de la filtration d’air"},"content":{"rendered":"Il existe deux types de filtres\u00a0\u00e0 air : les filtres\u00a0pour le traitement des particules\u00a0et les filtres\u00a0pour le traitement des mol\u00e9cules. Les deux ont la m\u00eame fonction,\u00a0\u00e0 savoir la r\u00e9duction de la concentration des polluants contenus dans l’air. Les mol\u00e9cules sont filtr\u00e9es par adsorption. Le charbon actif pr\u00e9sent dans les filtres est capable de filtrer les\u00a0mol\u00e9cules gazeuses par adsorption. En fonction de l’application vis\u00e9e, on utilisera tel ou tel type de charbon actif.\n

Quatre fa\u00e7ons de capturer les particules<\/h3>\nLa classe de filtration, la taille des particules et\u00a0le m\u00e9dia filtrant employ\u00e9 permettent\u00a0de d\u00e9finir la performance du filtre.\n\"Particules\n

Effet de tamis<\/strong><\/h4>\nL’effet de tamis est l’effet le plus utilis\u00e9 par les filtres\u00a0\u00e0 air. Son principe est simple : les particules sont d’une taille sup\u00e9rieure\u00a0\u00e0 l’espace entre les fibres et sont donc retenues.\n

\nEffet d’inertie<\/strong><\/h4>\nOn utilise ce principe lorsque la masse des particules est \u00e9lev\u00e9e. Les particules arrivent\u00a0\u00e0 grande vitesse. Par leur poids, elles heurtent les fibres du filtre au lieu de les contourner et de poursuivre leur trajectoire en suivant le flux d’air.\n

\nEffet d’interception<\/strong><\/h4>\nLe fait que les particules exercent une force d’attraction est important pour ce principe de filtration. Les fibres du filtre les plus importantes attirent les particules relativement petites. Une fois intercept\u00e9es, elles continuent\u00a0d’adh\u00e9rer aux fibres du filtre.\n

\nEffet de diffusion<\/strong><\/h4>\nLe mouvement des tr\u00e8s petites particules est souvent irr\u00e9gulier. Ce ph\u00e9nom\u00e8ne est appel\u00e9 mouvement de Brownse. La trajectoire parcourue par les particules peut d\u00e9pendre de la direction du flux d’air. Il y a de grandes chances que sous l’effet du mouvement de Brownse, les particules entrent en contact avec les fibres du filtre. Les divers effets de filtration peuvent \u00eatre repr\u00e9sent\u00e9s sur un graphique permettant de visualiser sur quelles tailles de particules chacun des principes de filtration est actif.\n\n\n
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Contact<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Il existe deux types de filtres\u00a0\u00e0 air : les filtres\u00a0pour le traitement des particules\u00a0et les filtres\u00a0pour le traitement des mol\u00e9cules. Les deux ont la m\u00eame fonction,\u00a0\u00e0 savoir la r\u00e9duction de la concentration des polluants contenus dans l’air. Les mol\u00e9cules sont filtr\u00e9es par adsorption. Le charbon actif pr\u00e9sent dans les filtres est capable de filtrer les\u00a0mol\u00e9cules […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":1413,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1215","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nLes principes de la filtration d'air - AFPRO<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.afprofilters.com\/fr\/expertises\/les-principes-de-la-filtration-dair\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les principes de la filtration d'air - AFPRO\" \/>\n<meta property=\"og:description\" content=\"Il existe deux types de filtres\u00a0\u00e0 air : les filtres\u00a0pour le traitement des particules\u00a0et les filtres\u00a0pour le traitement des mol\u00e9cules. Les deux ont la m\u00eame fonction,\u00a0\u00e0 savoir la r\u00e9duction de la concentration des polluants contenus dans l’air. Les mol\u00e9cules sont filtr\u00e9es par adsorption. 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