{"id":47240,"date":"2019-11-03T18:00:52","date_gmt":"2019-11-03T17:00:52","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-calor-latente-de-condensacao-entalpia-de-condensacao-definicao\/"},"modified":"2020-01-22T17:04:31","modified_gmt":"2020-01-22T16:04:31","slug":"o-que-e-calor-latente-de-condensacao-entalpia-de-condensacao-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-calor-latente-de-condensacao-entalpia-de-condensacao-definicao\/","title":{"rendered":"O que \u00e9 calor latente de condensa\u00e7\u00e3o &#8211; entalpia de condensa\u00e7\u00e3o &#8211; defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Para a condensa\u00e7\u00e3o, os efeitos de calor latente associados \u00e0 mudan\u00e7a de fase s\u00e3o significativos, da mesma forma que na fervura, mas ao contr\u00e1rio.\u00a0Calor Latente de Condensa\u00e7\u00e3o &#8211; Entalpia de Condensa\u00e7\u00e3o<\/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<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/dry-steam-saturated-vapor-min.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-16092 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/dry-steam-saturated-vapor-min-300x256.png\" alt=\"vapor seco-vapor saturado-min\" width=\"300\" height=\"256\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/dry-steam-saturated-vapor-min-300x256.png\" \/><\/a>Para a\u00a0<strong>condensa\u00e7\u00e3o, os<\/strong>\u00a0efeitos de calor latente associados \u00e0 mudan\u00e7a de fase s\u00e3o significativos, da mesma forma que na fervura, mas ao contr\u00e1rio.\u00a0Observe que a\u00a0<strong>entalpia da condensa\u00e7\u00e3o<\/strong>\u00a0(ou\u00a0<strong>calor da condensa\u00e7\u00e3o<\/strong>\u00a0) \u00e9 por defini\u00e7\u00e3o igual \u00e0 entalpia da vaporiza\u00e7\u00e3o com o sinal oposto.\u00a0Calor latente \u00e9 a quantidade de calor adicionada ou removida de uma subst\u00e2ncia para produzir uma mudan\u00e7a de fase.\u00a0Durante a vaporiza\u00e7\u00e3o, essa energia decomp\u00f5e as for\u00e7as atrativas intermoleculares e tamb\u00e9m deve fornecer a energia necess\u00e1ria para expandir o g\u00e1s (o\u00a0<strong>trabalho p\u0394V<\/strong>\u00a0).\u00a0Quando o calor latente \u00e9 adicionado ou removido, nenhuma mudan\u00e7a de temperatura ocorre.\u00a0A entalpia da vaporiza\u00e7\u00e3o \u00e9 uma fun\u00e7\u00e3o da press\u00e3o na qual essa transforma\u00e7\u00e3o ocorre.<\/p>\n<figure id=\"attachment_16677\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-16677\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Specific-Enthalpy-Water-and-Steam-min.png\"><img loading=\"lazy\" class=\"size-medium wp-image-16677 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Specific-Enthalpy-Water-and-Steam-min-242x300.png\" alt=\"Calor latente de vaporiza\u00e7\u00e3o - \u00e1gua a 0,1 MPa, 3 MPa, 16 MPa\" width=\"242\" height=\"300\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Specific-Enthalpy-Water-and-Steam-min-242x300.png\" \/><\/a><figcaption id=\"caption-attachment-16677\" class=\"wp-caption-text\">O calor da vaporiza\u00e7\u00e3o diminui com o aumento da press\u00e3o, enquanto o ponto de ebuli\u00e7\u00e3o aumenta.\u00a0Ele desaparece completamente em um determinado ponto chamado ponto cr\u00edtico.<\/figcaption><\/figure>\n<p>Calor latente de condensa\u00e7\u00e3o &#8211; \u00e1gua a 0,1 MPa (press\u00e3o atmosf\u00e9rica)<\/p>\n<p><strong>h\u00a0<\/strong><strong><sub>lg<\/sub><\/strong><strong>\u00a0= &#8211; 2257 kJ \/ kg<\/strong><\/p>\n<p>Calor latente de condensa\u00e7\u00e3o &#8211; \u00e1gua a 3 MPa<\/p>\n<p><strong>h\u00a0<\/strong><strong><sub>lg<\/sub><\/strong><strong>\u00a0= &#8211; 1795 kJ \/ kg<\/strong><\/p>\n<p>Calor latente de condensa\u00e7\u00e3o &#8211; \u00e1gua a 16 MPa (press\u00e3o dentro de um\u00a0<a href=\"https:\/\/www.nuclear-power.com\/pressurizer\/\">pressurizador<\/a>\u00a0)<\/p>\n<p><strong>h\u00a0<\/strong><strong><sub>lg<\/sub><\/strong><strong>\u00a0= &#8211; 931 kJ \/ kg<\/strong><\/p>\n<p>O\u00a0<strong>calor da condensa\u00e7\u00e3o<\/strong>\u00a0diminui com o aumento da press\u00e3o, enquanto o\u00a0<a href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-saturacao-ponto-de-ebulicao-definicao\/\">ponto de ebuli\u00e7\u00e3o<\/a>\u00a0aumenta.\u00a0Ele desaparece completamente em um determinado ponto chamado\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-of-water\/critical-point-of-water\/\">ponto cr\u00edtico<\/a>\u00a0.\u00a0Acima do ponto cr\u00edtico, as fases l\u00edquida e de vapor s\u00e3o indistingu\u00edveis, e a subst\u00e2ncia \u00e9 chamada de\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-steam-what-is-steam\/supercritical-fluid-supercritical-water\/\">fluido supercr\u00edtico<\/a>\u00a0.<\/p>\n<p>O calor da condensa\u00e7\u00e3o \u00e9 o calor liberado para condensar completamente uma unidade de vapor saturado e \u00e9 igual a &#8211;\u00a0\u00a0<strong>h\u00a0<sub>lg<\/sub>\u00a0\u00a0= h\u00a0<sub>l<\/sub>\u00a0&#8211; h\u00a0<sub>g<\/sub><\/strong>\u00a0.<\/p>\n<p>O calor necess\u00e1rio para derreter (ou congelar) uma unidade de massa na subst\u00e2ncia a press\u00e3o constante \u00e9 o calor da fus\u00e3o e \u00e9 igual a\u00a0\u00a0<strong>h\u00a0<sub>sl<\/sub>\u00a0\u00a0= h\u00a0<sub>l<\/sub>\u00a0\u00a0&#8211; h\u00a0<sub>s<\/sub><\/strong>\u00a0, onde h\u00a0<sub>s\u00a0<\/sub>\u00a0\u00e9 a entalpia do s\u00f3lido saturado e h\u00a0<sub>l<\/sub>\u00a0\u00a0\u00e9 a entalpia do l\u00edquido saturado.<\/p>\n<figure id=\"attachment_16676\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-16676\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Phease-Changes-Heat-of-Vaporization-Water-min.png\"><img loading=\"lazy\" class=\"size-large wp-image-16676 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Phease-Changes-Heat-of-Vaporization-Water-min-1024x454.png\" alt=\"Mudan\u00e7as de fase - entalpia de vaporiza\u00e7\u00e3o\" width=\"669\" height=\"297\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Phease-Changes-Heat-of-Vaporization-Water-min-1024x454.png\" \/><\/a><figcaption id=\"caption-attachment-16676\" class=\"wp-caption-text\"><span>Calor latente de vaporiza\u00e7\u00e3o &#8211; \u00e1gua a 0,1 MPa.\u00a0Parte dominante do calor absorvido.<\/span><\/figcaption><figcaption id=\"caption-attachment-16676\" class=\"wp-caption-text\">&#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<\/figcaption><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Para a condensa\u00e7\u00e3o, os efeitos de calor latente associados \u00e0 mudan\u00e7a de fase s\u00e3o significativos, da mesma forma que na fervura, mas ao contr\u00e1rio.\u00a0Calor Latente de Condensa\u00e7\u00e3o &#8211; Entalpia de Condensa\u00e7\u00e3o Para a\u00a0condensa\u00e7\u00e3o, os\u00a0efeitos de calor latente associados \u00e0 mudan\u00e7a de fase s\u00e3o significativos, da mesma forma que na fervura, mas ao contr\u00e1rio.\u00a0Observe que a\u00a0entalpia &#8230; <a title=\"O que \u00e9 calor latente de condensa\u00e7\u00e3o &#8211; entalpia de condensa\u00e7\u00e3o &#8211; defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-calor-latente-de-condensacao-entalpia-de-condensacao-definicao\/\" aria-label=\"More on O que \u00e9 calor latente de condensa\u00e7\u00e3o &#8211; entalpia de condensa\u00e7\u00e3o &#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 calor latente de condensa\u00e7\u00e3o - entalpia de condensa\u00e7\u00e3o - defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Para a condensa\u00e7\u00e3o, os efeitos de calor latente associados \u00e0 mudan\u00e7a de fase s\u00e3o significativos, da mesma forma que na fervura, mas ao contr\u00e1rio. 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