{"id":48324,"date":"2019-11-10T03:13:21","date_gmt":"2019-11-10T02:13:21","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-a-declaracao-da-segunda-lei-de-kelvin-planck-definicao\/"},"modified":"2020-01-28T14:41:35","modified_gmt":"2020-01-28T13:41:35","slug":"o-que-e-a-declaracao-da-segunda-lei-de-kelvin-planck-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-a-declaracao-da-segunda-lei-de-kelvin-planck-definicao\/","title":{"rendered":"O que \u00e9 a Declara\u00e7\u00e3o da Segunda Lei de Kelvin-Planck &#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 de Kelvin-Planck da Segunda Lei da Termodin\u00e2mica.\u00a0\u201c\u00c9 imposs\u00edvel construir um dispositivo que opera em um ciclo e n\u00e3o produz outro efeito sen\u00e3o a produ\u00e7\u00e3o de trabalho e a transfer\u00eancia de calor de um \u00fanico corpo\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<h2><span>Declara\u00e7\u00e3o da Segunda Lei de Kelvin-Planck<\/span><\/h2>\n<p><em><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/kelvin-planck-statement-second-law.png\"><img loading=\"lazy\" class=\"alignright size-full wp-image-16899 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/kelvin-planck-statement-second-law.png\" alt=\"Declara\u00e7\u00e3o da Segunda Lei de Kelvin-Planck\" width=\"237\" height=\"364\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/kelvin-planck-statement-second-law.png\" \/><\/a><span>\u201c\u00c9 imposs\u00edvel construir um dispositivo que opera em um ciclo e n\u00e3o produz outro efeito sen\u00e3o a produ\u00e7\u00e3o de trabalho e a transfer\u00eancia de calor de um \u00fanico corpo\u201d.<\/span><\/em><\/p>\n<p><span>Esta declara\u00e7\u00e3o opera com o termo &#8221;\u00a0<\/span><strong><span>reservat\u00f3rio t\u00e9rmico<\/span><\/strong><span>\u00a0&#8221; ou &#8221;\u00a0<\/span><strong><span>reservat\u00f3rio \u00fanico<\/span><\/strong><span>\u00a0&#8220;.\u00a0Um reservat\u00f3rio \u00e9 um objeto grande, no qual a temperatura permanece constante enquanto a energia \u00e9 extra\u00edda.\u00a0Esse sistema pode ser aproximado de v\u00e1rias maneiras &#8211; pela atmosfera da Terra, grandes massas de \u00e1gua como lagos, oceanos e assim por diante.<\/span><\/p>\n<p><span>A\u00a0<\/span><strong><span>declara\u00e7\u00e3o Kelvin-Planck<\/span><\/strong><span>\u00a0n\u00e3o exclui a exist\u00eancia de um sistema que desenvolve uma quantidade l\u00edquida de trabalho a partir de uma transfer\u00eancia de calor extra\u00edda de um reservat\u00f3rio t\u00e9rmico.\u00a0De acordo com esta declara\u00e7\u00e3o, um sistema em\u00a0<\/span><strong><span>ciclo<\/span><\/strong><span>\u00a0n\u00e3o pode desenvolver uma quantidade l\u00edquida positiva de trabalho a partir de uma transfer\u00eancia de calor extra\u00edda de um reservat\u00f3rio t\u00e9rmico.<\/span><\/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<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 de Kelvin-Planck da Segunda Lei da Termodin\u00e2mica.\u00a0\u201c\u00c9 imposs\u00edvel construir um dispositivo que opera em um ciclo e n\u00e3o produz outro efeito sen\u00e3o a produ\u00e7\u00e3o de trabalho e a transfer\u00eancia de calor de um \u00fanico corpo\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 &#8230; <a title=\"O que \u00e9 a Declara\u00e7\u00e3o da Segunda Lei de Kelvin-Planck &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-a-declaracao-da-segunda-lei-de-kelvin-planck-definicao\/\" aria-label=\"More on O que \u00e9 a Declara\u00e7\u00e3o da Segunda Lei de Kelvin-Planck &#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 da Segunda Lei de Kelvin-Planck - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Declara\u00e7\u00e3o de Kelvin-Planck da Segunda Lei da Termodin\u00e2mica. \u201c\u00c9 imposs\u00edvel construir um dispositivo que opera em um ciclo e n\u00e3o produz outro efeito sen\u00e3o a produ\u00e7\u00e3o de trabalho e a transfer\u00eancia de calor de um \u00fanico corpo\u201d. 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