{"id":45098,"date":"2019-10-17T11:52:22","date_gmt":"2019-10-17T10:52:22","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-quun-exemple-de-processus-isochorique-addition-de-chaleur-isochorique-definition\/"},"modified":"2020-02-20T20:22:43","modified_gmt":"2020-02-20T19:22:43","slug":"quest-ce-quun-exemple-de-processus-isochorique-addition-de-chaleur-isochorique-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-quun-exemple-de-processus-isochorique-addition-de-chaleur-isochorique-definition\/","title":{"rendered":"Exemple de processus isochorique – Addition de chaleur isochorique – D\u00e9finition"},"content":{"rendered":"
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Exemple de proc\u00e9d\u00e9 isochorique – Addition de chaleur isochorique.\u00a0Supposons que le cycle d’Otto, les processus 2 \u2192 3 et 4 \u2192 1 soient des processus isochoriques.\u00a0G\u00e9nie thermique<\/div>\n<\/div>\n
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Processus isochorique – Processus isom\u00e9trique<\/h2>\n

Un\u00a0processus isochore<\/strong>\u00a0est un processus thermodynamique dans lequel le\u00a0volume<\/strong>\u00a0du syst\u00e8me ferm\u00e9\u00a0reste constant<\/strong>\u00a0(V = const).\u00a0Il d\u00e9crit le comportement du gaz \u00e0 l’int\u00e9rieur du conteneur, qui ne peut pas \u00eatre d\u00e9form\u00e9.\u00a0\u00c9tant donn\u00e9 que\u00a0le volume reste constant, le transfert de chaleur dans ou hors du syst\u00e8me ne le\u00a0travail p\u0394V<\/a>\u00a0, mais change l’\u00a0\u00e9nergie<\/strong><\/a>\u00a0(la temp\u00e9rature) du syst\u00e8me.<\/p>\n

En ing\u00e9nierie des\u00a0moteurs \u00e0 combustion interne<\/strong>\u00a0, les processus isochoriques sont tr\u00e8s importants pour leurs cycles thermodynamiques (cycles Otto et Diesel), leur \u00e9tude est donc cruciale pour l’ing\u00e9nierie automobile.<\/p>\n

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Exemple de proc\u00e9d\u00e9 isochorique – Addition de chaleur isochorique<\/h2>\n

\"Cycle<\/a>Supposons le\u00a0cycle Otto<\/strong>\u00a0, qui est l’un des\u00a0cycles thermodynamiques<\/strong>\u00a0les plus courants\u00a0que l’on puisse trouver dans les\u00a0moteurs d’automobiles<\/strong>\u00a0.\u00a0Ce cycle suppose que l’addition de chaleur se produit instantan\u00e9ment (\u00a0entre 2 \u2192 3<\/strong>\u00a0) lorsque le piston est au point mort haut.\u00a0Ce processus est consid\u00e9r\u00e9 comme isochore.<\/p>\n

Les processus 2 \u2192 3 et 4 \u2192 1 sont des\u00a0processus isochoriques<\/strong>\u00a0, dans lesquels la chaleur est transf\u00e9r\u00e9e dans le syst\u00e8me entre 2 \u2192 3 et hors du syst\u00e8me entre 4 \u2192 1. Pendant ces processus, aucun travail n’est effectu\u00e9 sur le syst\u00e8me ou extrait du syst\u00e8me. .\u00a0Le processus isochore 2 \u2192 3 est destin\u00e9 \u00e0 repr\u00e9senter l’inflammation du m\u00e9lange carburant-air et la combustion rapide qui en r\u00e9sulte.<\/p>\n<\/div>\n<\/div>\n

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\"Processus<\/a>
Processus isochorique – caract\u00e9ristiques principales<\/figcaption><\/figure>\n
\"Loi<\/a>
Pour une masse fixe de gaz \u00e0 volume constant, la pression est directement proportionnelle \u00e0 la temp\u00e9rature Kelvin.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n
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Exemple de proc\u00e9d\u00e9 isochorique – Addition de chaleur isochorique.\u00a0Supposons que le cycle d’Otto, les processus 2 \u2192 3 et 4 \u2192 1 soient des processus isochoriques.\u00a0G\u00e9nie thermique Processus isochorique – Processus isom\u00e9trique Un\u00a0processus isochore\u00a0est un processus thermodynamique dans lequel le\u00a0volume\u00a0du syst\u00e8me ferm\u00e9\u00a0reste constant\u00a0(V = const).\u00a0Il d\u00e9crit le comportement du gaz \u00e0 l’int\u00e9rieur du conteneur, qui … Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"yoast_head":"\nExemple de processus isochorique - Addition de chaleur isochorique - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"Exemple de proc\u00e9d\u00e9 isochorique - Addition de chaleur isochorique. 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