{"id":48320,"date":"2019-11-10T02:56:23","date_gmt":"2019-11-10T01:56:23","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-a-declaracao-clausius-da-segunda-lei-definicao\/"},"modified":"2020-01-28T14:39:55","modified_gmt":"2020-01-28T13:39:55","slug":"o-que-e-a-declaracao-clausius-da-segunda-lei-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-a-declaracao-clausius-da-segunda-lei-definicao\/","title":{"rendered":"O que \u00e9 a Declara\u00e7\u00e3o Clausius da Segunda Lei &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Declara\u00e7\u00e3o Clausius da Segunda Lei da Termodin\u00e2mica.\u00a0\u201c\u00c9 imposs\u00edvel construir um dispositivo que opere em um ciclo e cujo \u00fanico efeito seja a transfer\u00eancia de calor de um corpo mais frio para um corpo mais quente\u201d.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2>V\u00e1rias declara\u00e7\u00f5es da lei<\/h2>\n<p>A\u00a0<strong>segunda lei da termodin\u00e2mica<\/strong>\u00a0pode ser expressa de v\u00e1rias maneiras espec\u00edficas.\u00a0Cada declara\u00e7\u00e3o expressa a mesma lei.\u00a0Listados abaixo est\u00e3o tr\u00eas frequentemente encontrados.<\/p>\n<ul>\n<li><a title=\"Clausius Declara\u00e7\u00e3o da Segunda Lei\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/second-law-of-thermodynamics\/clausius-statement-of-the-second-law\/\">Declara\u00e7\u00e3o Clausius<\/a><\/li>\n<li><a title=\"Declara\u00e7\u00e3o da Segunda Lei de Kelvin-Planck\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/second-law-of-thermodynamics\/kelvin-planck-statement-of-the-second-law\/\">Declara\u00e7\u00e3o de Kelvin-Planck<\/a><\/li>\n<li><a title=\"Entropia e a Segunda Lei da Termodin\u00e2mica\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/laws-of-thermodynamics\/second-law-of-thermodynamics\/entropy-and-the-second-law-of-thermodynamics\/\">Entropia e a Segunda Lei<\/a><\/li>\n<\/ul>\n<p>Antes dessas declara\u00e7\u00f5es, devemos lembrar o trabalho de\u00a0\u00a0um engenheiro e f\u00edsico franc\u00eas,\u00a0<strong><b>Nicolas L\u00e9onard Sadi Carnot<\/b><\/strong>, que\u00a0avan\u00e7ou o estudo da segunda lei, formando um princ\u00edpio (\u00a0tamb\u00e9m chamado\u00a0<strong><b>de regra de Carnot\u00a0<\/b><\/strong>) que especifica limites para a m\u00e1xima efici\u00eancia que qualquer motor t\u00e9rmico pode obter .<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<h2><span>Clausius Declara\u00e7\u00e3o da Segunda Lei<\/span><\/h2>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/clausius-statement-second-law.png\"><img loading=\"lazy\" class=\"alignright size-full wp-image-16898 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/clausius-statement-second-law.png\" alt=\"Clausius Declara\u00e7\u00e3o da Segunda Lei\" width=\"223\" height=\"329\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/clausius-statement-second-law.png\" \/><\/a><span>Uma das primeiras declara\u00e7\u00f5es da Segunda Lei da Termodin\u00e2mica foi feita por\u00a0<\/span><strong><span>R. Clausius em 1850<\/span><\/strong><span>\u00a0.\u00a0Ele afirmou o seguinte.<\/span><\/p>\n<p><em><span>\u201c\u00c9 imposs\u00edvel construir um dispositivo que opere em um ciclo e cujo \u00fanico efeito seja a transfer\u00eancia de calor de um corpo mais frio para um corpo mais quente\u201d.<\/span><\/em><\/p>\n<p><strong><span>O calor n\u00e3o pode fluir espontaneamente<\/span><\/strong><span>\u00a0do sistema frio para o sistema quente sem que seja executado um trabalho externo no sistema.\u00a0\u00c9 exatamente isso que os refrigeradores e as bombas de calor realizam.\u00a0Em uma geladeira, o calor flui do frio para o quente, mas somente quando for\u00e7ado por um trabalho externo, as geladeiras s\u00e3o acionadas por motores el\u00e9tricos que exigem trabalho do ambiente para operar.<\/span><\/p>\n<p><span>As declara\u00e7\u00f5es Clausius e Kelvin-Planck demonstraram ser equivalentes.<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\"><\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-accordion\">\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>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","protected":false},"excerpt":{"rendered":"<p>Declara\u00e7\u00e3o Clausius da Segunda Lei da Termodin\u00e2mica.\u00a0\u201c\u00c9 imposs\u00edvel construir um dispositivo que opere em um ciclo e cujo \u00fanico efeito seja a transfer\u00eancia de calor de um corpo mais frio para um corpo mais quente\u201d.\u00a0Engenharia T\u00e9rmica V\u00e1rias declara\u00e7\u00f5es da lei A\u00a0segunda lei da termodin\u00e2mica\u00a0pode ser expressa de v\u00e1rias maneiras espec\u00edficas.\u00a0Cada declara\u00e7\u00e3o expressa a mesma lei.\u00a0Listados &#8230; <a title=\"O que \u00e9 a Declara\u00e7\u00e3o Clausius da Segunda Lei &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-a-declaracao-clausius-da-segunda-lei-definicao\/\" aria-label=\"More on O que \u00e9 a Declara\u00e7\u00e3o Clausius da Segunda Lei &#8211; Defini\u00e7\u00e3o\">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":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 a Declara\u00e7\u00e3o Clausius da Segunda Lei - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Declara\u00e7\u00e3o Clausius da Segunda Lei da Termodin\u00e2mica. \u201c\u00c9 imposs\u00edvel construir um dispositivo que opere em um ciclo e cujo \u00fanico efeito seja a transfer\u00eancia de calor de um corpo mais frio para um corpo mais quente\u201d. 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