{"id":48187,"date":"2019-11-08T11:00:01","date_gmt":"2019-11-08T10:00:01","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-exemplo-de-processo-isotermico-definicao\/"},"modified":"2020-01-27T17:27:30","modified_gmt":"2020-01-27T16:27:30","slug":"o-que-e-exemplo-de-processo-isotermico-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-exemplo-de-processo-isotermico-definicao\/","title":{"rendered":"O que \u00e9 exemplo de processo isot\u00e9rmico – defini\u00e7\u00e3o"},"content":{"rendered":"
\n
Assuma uma expans\u00e3o isot\u00e9rmica de h\u00e9lio (i \u2192 f) em um pist\u00e3o sem atrito (sistema fechado).\u00a0A expans\u00e3o do g\u00e1s \u00e9 impulsionada pela absor\u00e7\u00e3o de energia t\u00e9rmica Qadd.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n
<\/div>\n
\n
\n
<\/div>\n

Exemplo de processo isot\u00e9rmico<\/h2>\n
\"Processo<\/a>
Processo isot\u00e9rmico – diagrama pV<\/figcaption><\/figure>\n

Assuma uma\u00a0expans\u00e3o isot\u00e9rmica<\/strong>\u00a0de h\u00e9lio (i \u2192 f) em um pist\u00e3o sem atrito (sistema fechado).\u00a0A expans\u00e3o do g\u00e1s \u00e9 impulsionada pela absor\u00e7\u00e3o de energia t\u00e9rmica\u00a0Q\u00a0add<\/sub><\/strong>\u00a0.\u00a0O g\u00e1s se expande do volume inicial de 0,001 m\u00a03<\/sup>\u00a0e simultaneamente a carga externa do pist\u00e3o diminui lenta e continuamente de 1 MPa para 0,5 MPa.\u00a0Como o h\u00e9lio se comporta quase como um g\u00e1s ideal, use a\u00a0lei do g\u00e1s ideal<\/strong>\u00a0<\/a>para calcular o volume final da c\u00e2mara e depois calcule o trabalho realizado pelo sistema, quando a temperatura do g\u00e1s for igual a 400 K.<\/p>\n

Solu\u00e7\u00e3o:<\/strong><\/p>\n

O volume final do g\u00e1s, V\u00a0f<\/sub>\u00a0, pode ser calculado usando a rela\u00e7\u00e3o\u00a0p, V, T<\/strong>\u00a0para o processo isot\u00e9rmico:<\/p>\n

p\u00a0<\/em>i<\/sub><\/em>\u00a0V\u00a0<\/em>i<\/sub><\/em>\u00a0= p\u00a0<\/em>f<\/sub><\/em>\u00a0V\u00a0<\/em>f<\/sub><\/em>\u00a0\u21d2\u00a0<\/em>V\u00a0<\/em>f<\/sub><\/em>\u00a0= p\u00a0<\/em>i<\/sub><\/em>\u00a0V\u00a0<\/em>i<\/sub><\/em>\u00a0\/ p\u00a0<\/em>f<\/sub><\/em>\u00a0= 2 x 0,001 m\u00a0<\/em>3<\/sup><\/em>\u00a0= 0,002 m\u00a0<\/em>3<\/sup><\/em><\/strong><\/p>\n

Para calcular esses processos, precisar\u00edamos saber como a press\u00e3o varia com o volume do processo real pelo qual o sistema muda\u00a0do estado i para o estado f<\/strong>\u00a0.\u00a0Como durante esse processo a press\u00e3o interna n\u00e3o era constante, o\u00a0trabalho de\u00a0p\u2206V<\/strong>\u00a0realizado pelo pist\u00e3o deve ser calculado usando a seguinte integral:<\/p>\n

\"processo<\/a><\/p>\n

Por conven\u00e7\u00e3o,\u00a0um valor positivo para o trabalho indica que o trabalho \u00e9 realizado pelo sistema em seus arredores.\u00a0Um valor negativo indica que o trabalho \u00e9 realizado no sistema por seus arredores.\u00a0O trabalho p\u0394V \u00e9 igual \u00e0 \u00e1rea sob a curva do processo plotada no diagrama press\u00e3o-volume.<\/p>\n<\/div>\n<\/div>\n

\n
\n
\"Processo<\/a>
Processo isot\u00e9rmico – principais caracter\u00edsticas<\/figcaption><\/figure>\n
\"Lei<\/a>
Lei de Boyle-Mariotte.\u00a0Para uma massa fixa de g\u00e1s a temperatura constante, o volume \u00e9 inversamente proporcional \u00e0 press\u00e3o.\u00a0Fonte: grc.nasa.gov A pol\u00edtica de direitos autorais da NASA afirma que \u201co material da NASA n\u00e3o \u00e9 protegido por direitos autorais, a menos que seja observado\u201d.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n
<\/div>\n
<\/div>\n
\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

……………………………………………………………………………………………………………………………….<\/p>\n

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":"

Assuma uma expans\u00e3o isot\u00e9rmica de h\u00e9lio (i \u2192 f) em um pist\u00e3o sem atrito (sistema fechado).\u00a0A expans\u00e3o do g\u00e1s \u00e9 impulsionada pela absor\u00e7\u00e3o de energia t\u00e9rmica Qadd.\u00a0Engenharia T\u00e9rmica Exemplo de processo isot\u00e9rmico Processo isot\u00e9rmico – diagrama pV Assuma uma\u00a0expans\u00e3o isot\u00e9rmica\u00a0de h\u00e9lio (i \u2192 f) em um pist\u00e3o sem atrito (sistema fechado).\u00a0A expans\u00e3o do g\u00e1s \u00e9 … 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":"\nO que \u00e9 exemplo de processo isot\u00e9rmico - defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Assuma uma expans\u00e3o isot\u00e9rmica de h\u00e9lio (i \u2192 f) em um pist\u00e3o sem atrito (sistema fechado). A expans\u00e3o do g\u00e1s \u00e9 impulsionada pela absor\u00e7\u00e3o de energia t\u00e9rmica Qadd. 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-exemplo-de-processo-isotermico-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 exemplo de processo isot\u00e9rmico - defini\u00e7\u00e3o\" \/>\n<meta property=\"og:description\" content=\"Assuma uma expans\u00e3o isot\u00e9rmica de h\u00e9lio (i \u2192 f) em um pist\u00e3o sem atrito (sistema fechado). A expans\u00e3o do g\u00e1s \u00e9 impulsionada pela absor\u00e7\u00e3o de energia t\u00e9rmica Qadd. Engenharia T\u00e9rmica\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-exemplo-de-processo-isotermico-definicao\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2019-11-08T10:00:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-01-27T16:27:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/isothermal-process-pV-diagram-300x245.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=\"2 minutos\">\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-exemplo-de-processo-isotermico-definicao\/#primaryimage\",\"inLanguage\":\"pt-BR\",\"url\":\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/isothermal-process-pV-diagram-300x245.png\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-exemplo-de-processo-isotermico-definicao\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-exemplo-de-processo-isotermico-definicao\/\",\"name\":\"O que \\u00e9 exemplo de processo isot\\u00e9rmico - defini\\u00e7\\u00e3o\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-exemplo-de-processo-isotermico-definicao\/#primaryimage\"},\"datePublished\":\"2019-11-08T10:00:01+00:00\",\"dateModified\":\"2020-01-27T16:27:30+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"Assuma uma expans\\u00e3o isot\\u00e9rmica de h\\u00e9lio (i \\u2192 f) em um pist\\u00e3o sem atrito (sistema fechado). A expans\\u00e3o do g\\u00e1s \\u00e9 impulsionada pela absor\\u00e7\\u00e3o de energia t\\u00e9rmica Qadd. Engenharia T\\u00e9rmica\",\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-exemplo-de-processo-isotermico-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\/48187"}],"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=48187"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/posts\/48187\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/media?parent=48187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/categories?post=48187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/pt-br\/wp-json\/wp\/v2\/tags?post=48187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}