{"id":47699,"date":"2019-11-06T01:03:56","date_gmt":"2019-11-06T00:03:56","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/"},"modified":"2020-01-24T17:18:58","modified_gmt":"2020-01-24T16:18:58","slug":"o-que-e-resistencia-termica-resistencia-termica-especifica-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/","title":{"rendered":"O que \u00e9 resist\u00eancia t\u00e9rmica &#8211; Resist\u00eancia t\u00e9rmica espec\u00edfica &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Defini\u00e7\u00e3o de resist\u00eancia t\u00e9rmica.\u00a0Resist\u00eancia t\u00e9rmica espec\u00edfica ou resistividade t\u00e9rmica espec\u00edfica, R\u03bb, que possui unidades de [(K \u00b7 m) \/ W].\u00a0T\u00e9rmica espec\u00edfica \u00e9 uma constante do material.\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>Defini\u00e7\u00e3o de resist\u00eancia t\u00e9rmica<\/h2>\n<p><a title=\"Resist\u00eancia t\u00e9rmica - Resistividade t\u00e9rmica\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistividade-termica-definicao\/\"><strong>A resist\u00eancia t\u00e9rmica<\/strong><\/a>\u00a0\u00e9 uma propriedade de calor e uma medi\u00e7\u00e3o de uma diferen\u00e7a de temperatura pela qual um objeto ou material resiste ao fluxo de calor.\u00a0A resist\u00eancia t\u00e9rmica para condu\u00e7\u00e3o em uma parede plana \u00e9 definida como:<\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-resistance-definition.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-20119 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-resistance-definition.png\" alt=\"resist\u00eancia t\u00e9rmica - defini\u00e7\u00e3o\" width=\"260\" height=\"170\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-resistance-definition.png\" \/><\/a><\/p>\n<p>Como o conceito de\u00a0<strong>resist\u00eancia t\u00e9rmica<\/strong>\u00a0pode ser usado em uma variedade de ramos de engenharia, definimos:<\/p>\n<ul>\n<li><strong>Resist\u00eancia t\u00e9rmica absoluta<\/strong>\u00a0,\u00a0<strong>R\u00a0<\/strong><strong><sub>t<\/sub><\/strong>\u00a0, que possui unidades de [K \/ W].\u00a0A resist\u00eancia t\u00e9rmica absoluta \u00e9 uma propriedade de um componente em particular, que definiu a geometria (espessura &#8211; L, \u00e1rea &#8211; A e forma).\u00a0Por exemplo, uma caracter\u00edstica de um trocador de calor definido.\u00a0Apenas uma diferen\u00e7a de temperatura \u00e9 necess\u00e1ria para resolver o calor transferido.<\/li>\n<li><strong>Resist\u00eancia t\u00e9rmica<\/strong>\u00a0espec\u00edfica ou resistividade t\u00e9rmica espec\u00edfica,\u00a0<strong>R\u00a0<sub>\u03bb<\/sub><\/strong>\u00a0, que possui unidades de [(K \u00b7 m) \/ W].\u00a0T\u00e9rmica espec\u00edfica \u00e9 uma constante do material.\u00a0A espessura do material e uma diferen\u00e7a de temperatura s\u00e3o necess\u00e1rias para resolver o calor transferido.<\/li>\n<li><strong>R-valor<\/strong>\u00a0.\u00a0O valor R (fator de isolamento t\u00e9rmico) \u00e9 uma medida de resist\u00eancia t\u00e9rmica.\u00a0Quanto maior o valor R, maior a efic\u00e1cia do isolamento.\u00a0A isola\u00e7\u00e3o t\u00e9rmica possui as unidades [(m\u00a0<sup>2<\/sup>\u00a0.K) \/ W] em unidades SI ou [(p\u00e9s\u00a0<sup>2<\/sup>\u00a0\u00b0 F \u00b7 h) \/ Btu] em unidades imperiais.\u00a0\u00c9 a resist\u00eancia t\u00e9rmica da \u00e1rea unit\u00e1ria de um material.\u00a0O valor R depende do tipo de isolamento, sua espessura e densidade.\u00a0\u00c9 necess\u00e1ria uma diferen\u00e7a de \u00e1rea e temperatura para resolver o calor transferido.<\/li>\n<\/ul>\n<p>&nbsp;<\/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\">\n<div class=\"su-accordion\">\n<div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-arrow\" data-anchor=\"References\">\n<div class=\"su-spoiler-content su-clearfix\"><\/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<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Defini\u00e7\u00e3o de resist\u00eancia t\u00e9rmica.\u00a0Resist\u00eancia t\u00e9rmica espec\u00edfica ou resistividade t\u00e9rmica espec\u00edfica, R\u03bb, que possui unidades de [(K \u00b7 m) \/ W].\u00a0T\u00e9rmica espec\u00edfica \u00e9 uma constante do material.\u00a0Engenharia T\u00e9rmica Defini\u00e7\u00e3o de resist\u00eancia t\u00e9rmica A resist\u00eancia t\u00e9rmica\u00a0\u00e9 uma propriedade de calor e uma medi\u00e7\u00e3o de uma diferen\u00e7a de temperatura pela qual um objeto ou material resiste ao fluxo &#8230; <a title=\"O que \u00e9 resist\u00eancia t\u00e9rmica &#8211; Resist\u00eancia t\u00e9rmica espec\u00edfica &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/\" aria-label=\"More on O que \u00e9 resist\u00eancia t\u00e9rmica &#8211; Resist\u00eancia t\u00e9rmica espec\u00edfica &#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 resist\u00eancia t\u00e9rmica - Resist\u00eancia t\u00e9rmica espec\u00edfica - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Defini\u00e7\u00e3o de resist\u00eancia t\u00e9rmica. Resist\u00eancia t\u00e9rmica espec\u00edfica ou resistividade t\u00e9rmica espec\u00edfica, R\u03bb, que possui unidades de [(K \u00b7 m) \/ W]. T\u00e9rmica espec\u00edfica \u00e9 uma constante do material. Engenharia T\u00e9rmica\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"O que \u00e9 resist\u00eancia t\u00e9rmica - Resist\u00eancia t\u00e9rmica espec\u00edfica - Defini\u00e7\u00e3o\" \/>\n<meta property=\"og:description\" content=\"Defini\u00e7\u00e3o de resist\u00eancia t\u00e9rmica. Resist\u00eancia t\u00e9rmica espec\u00edfica ou resistividade t\u00e9rmica espec\u00edfica, R\u03bb, que possui unidades de [(K \u00b7 m) \/ W]. T\u00e9rmica espec\u00edfica \u00e9 uma constante do material. Engenharia T\u00e9rmica\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2019-11-06T00:03:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-01-24T16:18:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-resistance-definition.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\">\n\t<meta name=\"twitter:data2\" content=\"1 minuto\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/\",\"name\":\"Thermal Engineering\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.thermal-engineering.org\/fr\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-BR\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/#primaryimage\",\"inLanguage\":\"pt-BR\",\"url\":\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/thermal-resistance-definition.png\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/\",\"name\":\"O que \\u00e9 resist\\u00eancia t\\u00e9rmica - Resist\\u00eancia t\\u00e9rmica espec\\u00edfica - Defini\\u00e7\\u00e3o\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/#primaryimage\"},\"datePublished\":\"2019-11-06T00:03:56+00:00\",\"dateModified\":\"2020-01-24T16:18:58+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"Defini\\u00e7\\u00e3o de resist\\u00eancia t\\u00e9rmica. Resist\\u00eancia t\\u00e9rmica espec\\u00edfica ou resistividade t\\u00e9rmica espec\\u00edfica, R\\u03bb, que possui unidades de [(K \\u00b7 m) \/ W]. T\\u00e9rmica espec\\u00edfica \\u00e9 uma constante do material. Engenharia T\\u00e9rmica\",\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-resistencia-termica-resistencia-termica-especifica-definicao\/\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\",\"name\":\"Nick Connor\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#personlogo\",\"inLanguage\":\"pt-BR\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g\",\"caption\":\"Nick Connor\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/posts\/47699"}],"collection":[{"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/comments?post=47699"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/posts\/47699\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/media?parent=47699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/categories?post=47699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/tags?post=47699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}