{"id":48352,"date":"2019-11-10T05:27:38","date_gmt":"2019-11-10T04:27:38","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-a-segunda-lei-de-joule-definicao\/"},"modified":"2020-01-28T15:22:00","modified_gmt":"2020-01-28T14:22:00","slug":"o-que-e-a-segunda-lei-de-joule-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-a-segunda-lei-de-joule-definicao\/","title":{"rendered":"O que \u00e9 a Segunda Lei de Joule – Defini\u00e7\u00e3o"},"content":{"rendered":"
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A Segunda Lei de Joule afirma: A energia interna de uma massa fixa de um g\u00e1s ideal depende apenas de sua temperatura (n\u00e3o press\u00e3o ou volume).\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n
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Segunda Lei de Joule<\/h2>\n

Para qualquer g\u00e1s cuja equa\u00e7\u00e3o de estado seja dada exatamente por\u00a0pV = nRT<\/strong>\u00a0<\/em>(ou\u00a0pv = RT<\/strong><\/em>\u00a0), a\u00a0energia interna espec\u00edfica<\/strong>\u00a0<\/a>depende apenas da temperatura.\u00a0Esta regra foi originalmente encontrada em 1843 pelo f\u00edsico ingl\u00eas\u00a0James Prescott Joule<\/strong>\u00a0experimentalmente para gases reais e \u00e9 conhecida como\u00a0a segunda lei de Joule<\/strong>\u00a0:<\/p>\n

A energia interna de uma massa fixa de um g\u00e1s ideal depende apenas de sua temperatura (n\u00e3o press\u00e3o ou volume).<\/em><\/p>\n

A\u00a0entalpia espec\u00edfica<\/a>\u00a0de um g\u00e1s descrita por\u00a0pV = nRT<\/strong><\/em>\u00a0tamb\u00e9m depende apenas da temperatura.\u00a0Observe que a\u00a0entalpia<\/strong>\u00a0\u00e9 a quantidade termodin\u00e2mica equivalente ao\u00a0conte\u00fado total de calor<\/strong>\u00a0de um sistema.\u00a0\u00c9 igual \u00e0 energia interna do sistema mais o produto de press\u00e3o e volume.\u00a0Em vari\u00e1veis \u200b\u200bintensivas, a\u00a0segunda lei de Joule<\/strong>\u00a0\u00e9 dada por\u00a0h = h (T) = u (T) + pv = u (T) + RT.<\/em><\/p>\n

Essas tr\u00eas equa\u00e7\u00f5es constituem o modelo de g\u00e1s ideal, resumido da seguinte forma:<\/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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……………………………………………………………………………………………………………………………….<\/p>\n

Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

A Segunda Lei de Joule afirma: A energia interna de uma massa fixa de um g\u00e1s ideal depende apenas de sua temperatura (n\u00e3o press\u00e3o ou volume).\u00a0Engenharia T\u00e9rmica Segunda Lei de Joule Para qualquer g\u00e1s cuja equa\u00e7\u00e3o de estado seja dada exatamente por\u00a0pV = nRT\u00a0(ou\u00a0pv = RT\u00a0), a\u00a0energia interna espec\u00edfica\u00a0depende apenas da temperatura.\u00a0Esta regra foi originalmente … Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[],"yoast_head":"\nO que \u00e9 a Segunda Lei de Joule - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"A Segunda Lei de Joule afirma: A energia interna de uma massa fixa de um g\u00e1s ideal depende apenas de sua temperatura (n\u00e3o press\u00e3o ou volume). 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