{"id":263391,"date":"2024-06-09T16:35:51","date_gmt":"2024-06-09T15:35:51","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/dichlorodifluoromethane-refrigerant-r-12-proprietes-thermiques\/"},"modified":"2024-06-09T16:35:51","modified_gmt":"2024-06-09T15:35:51","slug":"dichlorodifluoromethane-refrigerant-r-12-proprietes-thermiques","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/dichlorodifluoromethane-refrigerant-r-12-proprietes-thermiques\/","title":{"rendered":"Dichlorodifluorom\u00e9thane | R\u00e9frig\u00e9rant R-12, Propri\u00e9t\u00e9s Thermiques"},"content":{"rendered":"<p class=\"sidekick\">Comprendre le dichlorodifluorom\u00e9thane (R-12), ses propri\u00e9t\u00e9s thermiques, ses applications, et son impact environnemental, ainsi que les alternatives disponibles aujourd&#8217;hui.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/06\/dichlorodifluoromethane_refrigerant_r-12_proprietes_thermiques.png\" alt=\"Dichlorodifluorom\u00e9thane | R\u00e9frig\u00e9rant R-12, Propri\u00e9t\u00e9s Thermiques\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Dichlorodifluorom\u00e9thane | R\u00e9frig\u00e9rant R-12, Propri\u00e9t\u00e9s Thermiques<\/h2>\n<p>Le dichlorodifluorom\u00e9thane, commun\u00e9ment connu sous le nom de R-12, est un r\u00e9frig\u00e9rant tr\u00e8s utilis\u00e9 dans les syst\u00e8mes de r\u00e9frig\u00e9ration et de climatisation. D\u00e9couvert au d\u00e9but du 20<sup>e<\/sup> si\u00e8cle, il est devenu particuli\u00e8rement populaire en raison de ses excellentes propri\u00e9t\u00e9s thermiques et de sa stabilit\u00e9 chimique. Cependant, son usage a diminu\u00e9 en raison de son impact environnemental n\u00e9gatif.<\/p>\n<h2>Propri\u00e9t\u00e9s Physiques et Chimiques<\/h2>\n<p><u1><\/p>\n<li>Formule chimique : CCl<sub>2<\/sub>F<sub>2<\/sub><\/li>\n<li>Masse molaire : 120.91 g\/mol<\/li>\n<li>Point d&#8217;\u00e9bullition : -29.8 \u00b0C (\u00e0 pression atmosph\u00e9rique)<\/li>\n<li>Densit\u00e9 : 1.486 g\/cm<sup>3<\/sup> (\u00e0 25 \u00b0C)<\/li>\n<li>Pression de vapeur : 5.733 Pa (\u00e0 25 \u00b0C)<\/li>\n<p><\/u1><\/p>\n<h2>Propri\u00e9t\u00e9s Thermiques<\/h2>\n<p>Les propri\u00e9t\u00e9s thermiques du R-12 incluent:<\/p>\n<p><u1><\/p>\n<li>Capacit\u00e9 thermique sp\u00e9cifique : 0.86 kJ\/kg\u00b7K (\u00e0 25 \u00b0C)<\/li>\n<li>Chaleur de vaporisation : 165 kJ\/kg (\u00e0 -30 \u00b0C)<\/li>\n<li>Conductivit\u00e9 thermique : 8.31 mW\/m\u00b7K (liquide \u00e0 0 \u00b0C)<\/li>\n<p><\/u1><\/p>\n<h2>Applications<\/h2>\n<p>Le R-12 a \u00e9t\u00e9 largement utilis\u00e9 dans divers domaines avant son interdiction :<\/p>\n<p><u1><\/p>\n<li>R\u00e9frig\u00e9ration domestique et industrielle<\/li>\n<li>Climatiseurs de voitures<\/li>\n<li>Pompes \u00e0 chaleur<\/li>\n<li>Syst\u00e8mes de r\u00e9frig\u00e9ration commerciales<\/li>\n<p><\/u1><\/p>\n<h2>Impact Environnemental<\/h2>\n<p>Le r\u00e9frig\u00e9rant R-12 est un chlorofluorocarbone (CFC), qui a \u00e9t\u00e9 identifi\u00e9 comme un contributeur majeur \u00e0 l&#8217;appauvrissement de la couche d&#8217;ozone. En raison de son potentiel de d\u00e9gradation de l&#8217;ozone, mesur\u00e9 par son <i>ODP (Ozone Depletion Potential)<\/i> de 1,0, il a \u00e9t\u00e9 progressivement \u00e9limin\u00e9 par le Protocole de Montr\u00e9al. Le R-12 poss\u00e8de \u00e9galement un GWP (Global Warming Potential) \u00e9lev\u00e9 de 10 900, contribuant de mani\u00e8re significative au r\u00e9chauffement climatique.<\/p>\n<h2>Rempla\u00e7ants du R-12<\/h2>\n<p>\u00c0 cause de ses impacts n\u00e9gatifs, plusieurs alternatives ont \u00e9t\u00e9 d\u00e9velopp\u00e9es et utilis\u00e9es :<\/p>\n<p><u1><\/p>\n<li>R-134a (T\u00e9trafluoro\u00e9thane) : Utilis\u00e9 principalement dans les nouveaux syst\u00e8mes de climatisation automatiques.<\/li>\n<li>R-22 (Chlorodifluorom\u00e9thane) : Utilis\u00e9 pendant un certain temps, maintenant \u00e9galement en cours de suppression progressive.<\/li>\n<li>R-410A : Un m\u00e9lange de r\u00e9frig\u00e9rants utilis\u00e9 dans les nouvelles installations de climatisation et de r\u00e9frig\u00e9ration.<\/li>\n<p><\/u1><\/p>\n<h2>Conclusion<\/h2>\n<p>Le dichlorodifluorom\u00e9thane (R-12) a \u00e9t\u00e9 un r\u00e9frig\u00e9rant cl\u00e9 dans le 20<sup>e<\/sup> si\u00e8cle, appr\u00e9ci\u00e9 pour ses excellentes propri\u00e9t\u00e9s thermiques. Cependant, ses impacts environnementaux significatifs ont conduit \u00e0 son remplacement par des alternatives plus respectueuses de l&#8217;environnement. Aujourd&#8217;hui, les ing\u00e9nieurs et les scientifiques continuent \u00e0 rechercher des r\u00e9frig\u00e9rants qui offrent un \u00e9quilibre optimal entre performance thermique et durabilit\u00e9 environnementale.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Comprendre le dichlorodifluorom\u00e9thane (R-12), ses propri\u00e9t\u00e9s thermiques, ses applications, et son impact environnemental, ainsi que les alternatives disponibles aujourd&#8217;hui.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[122],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dichlorodifluorom\u00e9thane | R\u00e9frig\u00e9rant R-12, Propri\u00e9t\u00e9s Thermiques<\/title>\n<meta name=\"description\" content=\"Comprendre le dichlorodifluorom\u00e9thane (R-12), ses 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