{"id":47200,"date":"2019-11-03T14:46:45","date_gmt":"2019-11-03T13:46:45","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-o-ponto-de-pressao-trocador-de-calor-definicao\/"},"modified":"2020-01-22T16:46:54","modified_gmt":"2020-01-22T15:46:54","slug":"o-que-e-o-ponto-de-pressao-trocador-de-calor-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-ponto-de-pressao-trocador-de-calor-definicao\/","title":{"rendered":"O que \u00e9 o ponto de press\u00e3o – Trocador de calor – Defini\u00e7\u00e3o"},"content":{"rendered":"
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O ponto de aperto \u00e9 o local no trocador de calor em que a diferen\u00e7a de temperatura entre o fluido quente e o frio \u00e9 m\u00ednima nesse local.\u00a0Pinch Point – Trocador de Calor<\/div>\n<\/div>\n
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Pinch Point – Trocador de Calor<\/h2>\n

H\u00e1 outro aspecto interessante no projeto, pois a diferen\u00e7a de temperatura conhecida como\u00a0‘pitada’<\/strong>\u00a0pode limitar o desempenho dos trocadores de calor se as \u00e1reas e taxas de fluxo n\u00e3o forem projetadas adequadamente.\u00a0O ponto de aperto<\/strong>\u00a0\u00e9 o local no trocador de calor em que a diferen\u00e7a de temperatura entre o fluido quente e o frio \u00e9\u00a0m\u00ednima<\/strong>\u00a0nesse local.<\/p>\n<\/div>\n<\/div>\n

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LMTD – Condensadores e Caldeiras<\/h2>\n
\"Gerador<\/a>
Gradientes de temperatura no gerador de vapor PWR t\u00edpico.<\/figcaption><\/figure>\n

Geradores de vapor<\/a>\u00a0e\u00a0condensadores<\/a>\u00a0tamb\u00e9m s\u00e3o exemplos de componentes encontrados em instala\u00e7\u00f5es nucleares, onde o conceito de\u00a0LMTD<\/strong>\u00a0\u00e9 necess\u00e1rio para resolver certos problemas.\u00a0Quando a \u00e1gua sub-resfriada entra no gerador de vapor, ela deve ser aquecida at\u00e9 o ponto de ebuli\u00e7\u00e3o e depois deve ser evaporada.\u00a0Como a evapora\u00e7\u00e3o est\u00e1 ocorrendo a temperatura constante, n\u00e3o pode ser usado um \u00fanico LMTD.\u00a0Nesse caso, o trocador de calor deve ser tratado como uma combina\u00e7\u00e3o de dois ou tr\u00eas (quando ocorre superaquecimento) trocadores de calor.<\/p>\n<\/div>\n<\/div>\n

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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":"

O ponto de aperto \u00e9 o local no trocador de calor em que a diferen\u00e7a de temperatura entre o fluido quente e o frio \u00e9 m\u00ednima nesse local.\u00a0Pinch Point – Trocador de Calor Pinch Point – Trocador de Calor H\u00e1 outro aspecto interessante no projeto, pois a diferen\u00e7a de temperatura conhecida como\u00a0‘pitada’\u00a0pode limitar o desempenho … 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 o ponto de press\u00e3o - Trocador de calor - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"O ponto de aperto \u00e9 o local no trocador de calor em que a diferen\u00e7a de temperatura entre o fluido quente e o frio \u00e9 m\u00ednima nesse local. 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