{"id":45577,"date":"2019-10-18T12:36:33","date_gmt":"2019-10-18T11:36:33","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quelle-est-la-deuxieme-loi-de-joule-definition\/"},"modified":"2020-02-25T14:57:21","modified_gmt":"2020-02-25T13:57:21","slug":"quelle-est-la-deuxieme-loi-de-joule-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quelle-est-la-deuxieme-loi-de-joule-definition\/","title":{"rendered":"Quelle est le deuxi\u00e8me principe de Joule – D\u00e9finition"},"content":{"rendered":"
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La deuxi\u00e8me loi de Joule stipule que: L’\u00e9nergie interne d’une masse fixe d’un gaz parfait ne d\u00e9pend que de sa temp\u00e9rature (et non de la pression ou du volume).\u00a0G\u00e9nie thermique<\/div>\n<\/div>\n
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Deuxi\u00e8me loi de Joule<\/h2>\n

Pour tout gaz dont l’\u00e9quation d’\u00e9tat est donn\u00e9e exactement par\u00a0pV = nRT<\/strong>\u00a0<\/em>(ou\u00a0pv = RT<\/strong><\/em>\u00a0), l’\u00a0\u00e9nergie interne sp\u00e9cifique<\/strong>\u00a0<\/a>d\u00e9pend uniquement de la temp\u00e9rature.\u00a0Cette r\u00e8gle a \u00e9t\u00e9 d\u00e9couverte en 1843 par un physicien anglais,\u00a0James Prescott Joule, \u00e0 titre<\/strong>\u00a0exp\u00e9rimental pour des gaz r\u00e9els. Elle est connue sous le nom\u00a0de seconde loi de Joule<\/strong>\u00a0:<\/p>\n

L’\u00e9nergie interne d’une masse fixe d’un gaz parfait ne d\u00e9pend que de sa temp\u00e9rature (ni de la pression ni du volume).<\/em><\/p>\n

L’\u00a0enthalpie sp\u00e9cifique<\/a>\u00a0d’un gaz d\u00e9crite par\u00a0pV = nRT<\/strong><\/em>\u00a0d\u00e9pend \u00e9galement de la temp\u00e9rature uniquement.\u00a0Notez que l’\u00a0enthalpie<\/strong>\u00a0est la quantit\u00e9 thermodynamique \u00e9quivalente au\u00a0contenu thermique total<\/strong>\u00a0d’un syst\u00e8me.\u00a0Il est \u00e9gal \u00e0 l’\u00e9nergie interne du syst\u00e8me plus le produit de la pression et du volume.\u00a0Dans les variables intensives, la\u00a0seconde loi de Joule<\/strong>\u00a0est donc donn\u00e9e par\u00a0h = h (T) = u (T) + pv = u (T) + RT.<\/em><\/p>\n

Ces trois \u00e9quations constituent le mod\u00e8le du gaz parfait, r\u00e9sum\u00e9 comme suit:<\/p>\n

pv = RT<\/strong><\/em><\/p>\n

u = u (T)<\/strong><\/em><\/p>\n

h = h (T) = u (T) + RT<\/strong><\/em><\/p>\n<\/div>\n<\/div>\n

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Cet article est bas\u00e9 sur la traduction automatique de l’article original en anglais. Pour plus d’informations, voir l’article en anglais. Pouvez vous nous aider Si vous souhaitez corriger la traduction, envoyez-la \u00e0 l’adresse: translations@nuclear-power.com ou remplissez le formulaire de traduction en ligne. Nous appr\u00e9cions votre aide, nous mettrons \u00e0 jour la traduction le plus rapidement possible. Merci<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

La deuxi\u00e8me loi de Joule stipule que: L’\u00e9nergie interne d’une masse fixe d’un gaz parfait ne d\u00e9pend que de sa temp\u00e9rature (et non de la pression ou du volume).\u00a0G\u00e9nie thermique Deuxi\u00e8me loi de Joule Pour tout gaz dont l’\u00e9quation d’\u00e9tat est donn\u00e9e exactement par\u00a0pV = nRT\u00a0(ou\u00a0pv = RT\u00a0), l’\u00a0\u00e9nergie interne sp\u00e9cifique\u00a0d\u00e9pend uniquement de la temp\u00e9rature.\u00a0Cette … 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":"\nQuelle est la deuxi\u00e8me loi de Joule - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"La deuxi\u00e8me loi de Joule stipule que: L\u2019\u00e9nergie interne d\u2019une masse fixe d\u2019un gaz id\u00e9al ne d\u00e9pend que de sa temp\u00e9rature (et non de la pression ou du volume). 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