{"id":48075,"date":"2019-11-08T01:35:24","date_gmt":"2019-11-08T00:35:24","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-o-processo-politropico-definicao\/"},"modified":"2020-01-27T13:34:32","modified_gmt":"2020-01-27T12:34:32","slug":"o-que-e-o-processo-politropico-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-processo-politropico-definicao\/","title":{"rendered":"O que \u00e9 o Processo Politr\u00f3pico &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Um processo politr\u00f3pico \u00e9 qualquer processo termodin\u00e2mico que pode ser expresso pela seguinte equa\u00e7\u00e3o: pVn = constante. Defini\u00e7\u00e3o e caracter\u00edsticas do Processo Politr\u00f3pico. Engenharia T\u00e9rmica<\/div>\n<\/div>\n<div><\/div>\n<div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights  lgc-first\">\n<div class=\"inside-grid-column\">\n<h2><span>Processo Politr\u00f3pico<\/span><\/h2>\n<p><strong><span>Um\u00a0<\/span><span>processo politr\u00f3pico<\/span><span>\u00a0\u00e9 qualquer processo termodin\u00e2mico que pode ser expresso pela seguinte equa\u00e7\u00e3o:<\/span><\/strong><\/p>\n<p><em><strong><span>pV\u00a0<\/span><sup><span>n<\/span><\/sup><span>\u00a0= constante<\/span><\/strong><\/em><\/p>\n<p><span>O\u00a0<\/span><strong><span>processo politr\u00f3pico<\/span><\/strong><span>\u00a0pode descrever a expans\u00e3o e compress\u00e3o de g\u00e1s que\u00a0<\/span><strong><span>incluem transfer\u00eancia de calor<\/span><\/strong><span>\u00a0.\u00a0O expoente\u00a0<\/span><strong><span>n<\/span><\/strong><span>\u00a0\u00e9 conhecido como\u00a0<\/span><strong><span>\u00edndice politr\u00f3pico<\/span><\/strong><span>\u00a0e pode assumir qualquer valor de 0 a \u221e, dependendo do processo espec\u00edfico.<\/span><\/p>\n<p><span>Existem alguns\u00a0<\/span><strong><span>casos especiais de n<\/span><\/strong><span>\u00a0, que correspondem a processos espec\u00edficos:<\/span><\/p>\n<ul>\n<li><span>o caso\u00a0<\/span><strong><em><span>n =\u00a0<\/span><\/em><\/strong><em><strong><span>0<\/span><\/strong><span>\u00a0,<\/span><\/em><span>\u00a0p = constante\u00a0<\/span><em><span>,<\/span><\/em><span>\u00a0corresponde a um processo\u00a0<\/span><a title=\"Processo isob\u00e1rico\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-processo-isobarico-definicao\/\"><strong><span>isob\u00e1rico (press\u00e3o constante)<\/span><\/strong><\/a><span>\u00a0.<\/span><\/li>\n<li><span>o caso\u00a0<\/span><strong><em><span>n =\u00a0<\/span><\/em><\/strong><em><strong><span>1<\/span><\/strong><span>\u00a0,<\/span><\/em><span>\u00a0pV = constante\u00a0<\/span><em><span>, \u00a0<\/span><\/em><span>\u00a0corresponde a um processo\u00a0<\/span><a title=\"Processo isot\u00e9rmico\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-processo-isotermico-definicao\/\"><strong><span>isot\u00e9rmico (temperatura constante)<\/span><\/strong><\/a><span>\u00a0.<\/span><\/li>\n<li><span>o caso\u00a0<\/span><strong><em><span>n =<\/span><\/em>\u00a0<\/strong><em><span>,<\/span><\/em><span>\u00a0pV<\/span><span>= constante\u00a0<\/span><em><span>, \u00a0<\/span><\/em><span>\u00a0corresponde a um processo\u00a0<\/span><strong><a title=\"Processo isentr\u00f3pico\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-processo-isentropico-definicao\/\"><span>isentr\u00f3pico (entropia constante)<\/span><\/a><\/strong><span>\u00a0.<\/span><\/li>\n<li><span>o caso\u00a0<\/span><strong><em><span>n\u00a0<\/span><\/em><em><span>\u279d\u00a0<\/span><\/em><em><span>\u221e<\/span><\/em><\/strong><em>\u00a0\u00a0<\/em><span>\u00a0corresponde a um processo\u00a0<\/span><a title=\"Processo Isoc\u00f3rico - Processo Isom\u00e9trico\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-processo-isocorico-processo-isometrico-definicao\/\"><strong><span>isoc\u00f3rico (volume constante)<\/span><\/strong><\/a><span>\u00a0.<\/span><\/li>\n<\/ul>\n<p><span>&amp; nbsp;<\/span><\/p>\n<ul>\n<li><span>No caso\u00a0<\/span><strong><span>1 &lt;\u00a0<\/span><em><span>n &lt;<\/span><\/em>\u00a0<\/strong><span>, nesse processo, os fluxos de calor e trabalho seguem dire\u00e7\u00f5es opostas. Esse processo ocorre, por exemplo, na refrigera\u00e7\u00e3o por compress\u00e3o de vapor durante a compress\u00e3o<\/span><\/li>\n<li><span>o caso\u00a0<\/span><strong><span>&lt;\u00a0<\/span><em><span>n &lt;\u00a0<\/span><\/em><em><span>\u221e<\/span><\/em><\/strong><span>\u00a0, neste processo, os fluxos de calor e trabalho seguem na mesma dire\u00e7\u00e3o. Esse processo ocorre, por exemplo, em um motor de combust\u00e3o interna (por exemplo, ciclo Otto), no qual h\u00e1 calor perde atrav\u00e9s das paredes do cilindro durante o g\u00e1s expans\u00e3o (golpe de energia).<\/span><\/li>\n<\/ul>\n<p><span>Para um\u00a0<\/span><strong><span>processo politr\u00f3pico<\/span><\/strong><span>\u00a0entre dois estados:<\/span><\/p>\n<p><em><strong><span>p\u00a0<\/span><sub><span>1<\/span><\/sub><span>\u00a0V\u00a0<\/span><sub><span>1\u00a0<\/span><\/sub><sup><span>n<\/span><\/sup><span>\u00a0= p\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u00a0V\u00a0<\/span><sub><span>2\u00a0<\/span><\/sub><sup><span>n<\/span><\/sup><\/strong><\/em><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights  lgc-last\">\n<div class=\"inside-grid-column\">\n<figure id=\"attachment_17477\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-17477\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Polytropic-process-main-characteristics.png\"><img loading=\"lazy\" class=\"size-full wp-image-17477 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Polytropic-process-main-characteristics.png\" alt=\"Processo politr\u00f3pico - principais caracter\u00edsticas\" width=\"397\" height=\"617\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Polytropic-process-main-characteristics.png\" \/><\/a><figcaption id=\"caption-attachment-17477\" class=\"wp-caption-text\"><span>Processo politr\u00f3pico &#8211; principais caracter\u00edsticas<\/span><\/figcaption><\/figure>\n<figure id=\"attachment_17462\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-17462\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/polytropic-process-pv-diagram.png\"><img loading=\"lazy\" class=\"size-full wp-image-17462 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/polytropic-process-pv-diagram.png\" alt=\"processo politr\u00f3pico - diagrama pv\" width=\"721\" height=\"551\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/polytropic-process-pv-diagram.png\" \/><\/a><figcaption id=\"caption-attachment-17462\" class=\"wp-caption-text\"><span>Processos politr\u00f3picos com v\u00e1rios \u00edndices politr\u00f3picos.<\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div><\/div>\n<div><\/div>\n<div>\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","protected":false},"excerpt":{"rendered":"<p>Um processo politr\u00f3pico \u00e9 qualquer processo termodin\u00e2mico que pode ser expresso pela seguinte equa\u00e7\u00e3o: pVn = constante. Defini\u00e7\u00e3o e caracter\u00edsticas do Processo Politr\u00f3pico. Engenharia T\u00e9rmica Processo Politr\u00f3pico Um\u00a0processo politr\u00f3pico\u00a0\u00e9 qualquer processo termodin\u00e2mico que pode ser expresso pela seguinte equa\u00e7\u00e3o: pV\u00a0n\u00a0= constante O\u00a0processo politr\u00f3pico\u00a0pode descrever a expans\u00e3o e compress\u00e3o de g\u00e1s que\u00a0incluem transfer\u00eancia de calor\u00a0.\u00a0O expoente\u00a0n\u00a0\u00e9 &#8230; <a title=\"O que \u00e9 o Processo Politr\u00f3pico &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-processo-politropico-definicao\/\" aria-label=\"More on O que \u00e9 o Processo Politr\u00f3pico &#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 o Processo Politr\u00f3pico - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Um processo politr\u00f3pico \u00e9 qualquer processo termodin\u00e2mico que pode ser expresso pela seguinte equa\u00e7\u00e3o: pVn = constante. 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