{"id":49286,"date":"2019-11-16T00:27:50","date_gmt":"2019-11-15T23:27:50","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-potencia-de-freio-definicao\/"},"modified":"2020-01-31T13:04:27","modified_gmt":"2020-01-31T12:04:27","slug":"o-que-e-potencia-de-freio-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-potencia-de-freio-definicao\/","title":{"rendered":"O que \u00e9 pot\u00eancia de freio &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">A pot\u00eancia necess\u00e1ria para acionar a bomba \u00e9 geralmente conhecida como pot\u00eancia dos freios.\u00a0Pode ser expresso em termos de pot\u00eancia da \u00e1gua dividida por efici\u00eancia.\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>Pot\u00eancia de freio<\/h2>\n<p>A\u00a0<strong>pot\u00eancia necess\u00e1ria<\/strong>\u00a0para acionar uma\u00a0<a title=\"Bombas centr\u00edfugas\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-bomba-centrifuga-definicao\/\">bomba centr\u00edfuga<\/a>\u00a0\u00e9 geralmente conhecida como\u00a0<strong>pot\u00eancia<\/strong>\u00a0dos\u00a0<strong>freios<\/strong>\u00a0.\u00a0Pode ser expresso em termos de pot\u00eancia da \u00e1gua dividida por efici\u00eancia.<\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/brake-horsepower.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14999 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/brake-horsepower.png\" alt=\"pot\u00eancia de freio\" width=\"112\" height=\"67\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/brake-horsepower.png\" \/><\/a><\/p>\n<p>No sistema m\u00e9trico,\u00a0\u00a0s\u00e3o utilizados\u00a0<strong>quilowatts (kW)<\/strong>\u00a0.\u00a0Devido a perdas hidr\u00e1ulicas, mec\u00e2nicas e volum\u00e9tricas em uma bomba, a pot\u00eancia real ou h\u00eddrica dispon\u00edvel para o trabalho no fluido \u00e9 menor que a pot\u00eancia total fornecida.<\/p>\n<h2>Efici\u00eancia da bomba<\/h2>\n<p><strong>A efici\u00eancia da bomba<\/strong>\u00a0\u00e9 a raz\u00e3o entre a\u00a0<strong>pot\u00eancia de \u00e1gua<\/strong>\u00a0fornecida pela bomba e a\u00a0<strong>pot\u00eancia de freio<\/strong>\u00a0fornecida ao eixo da bomba.\u00a0Ao selecionar uma bomba, uma das principais preocupa\u00e7\u00f5es \u00e9 otimizar\u00a0<strong>a efici\u00eancia do bombeamento<\/strong>\u00a0.\u00a0O uso de energia em uma instala\u00e7\u00e3o de bombeamento \u00e9 determinado pelo fluxo necess\u00e1rio, pela altura elevada e pelas\u00a0<strong>caracter\u00edsticas<\/strong>\u00a0de\u00a0comprimento e\u00a0<strong>atrito<\/strong>\u00a0da tubula\u00e7\u00e3o.\u00a0A energia necess\u00e1ria para acionar uma bomba \u00e9 definida simplesmente usando as unidades SI:<\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/pump-efficiency.png?11abca\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14994 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/pump-efficiency.png?11abca\" alt=\"efici\u00eancia da bomba\" width=\"179\" height=\"58\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/pump-efficiency.png?11abca\" \/><\/a><\/p>\n<p><span>Onde:<\/span><\/p>\n<ul>\n<li><span>P \u00e9 a pot\u00eancia de entrada necess\u00e1ria (W)<\/span><\/li>\n<li><span>BHP \u00e9 a pot\u00eancia do freio<\/span><\/li>\n<li><span>\u03c1 \u00e9 a densidade do fluido (kg \/ m\u00a0<\/span><sup><span>3<\/span><\/sup><span>\u00a0)<\/span><\/li>\n<li><span>g \u00e9 a acelera\u00e7\u00e3o padr\u00e3o da gravidade (9,81 m \/ s\u00a0<\/span><sup><span>2<\/span><\/sup><span>\u00a0)<\/span><\/li>\n<li><span>H \u00e9 a cabe\u00e7a l\u00edquida da bomba adicionada ao fluxo (m)<\/span><\/li>\n<li><span>Q \u00e9 a vaz\u00e3o (m\u00a0<\/span><sup><span>3<\/span><\/sup><span>\u00a0\/ s)<\/span><\/li>\n<li><span>\u03b7 \u00e9 a efici\u00eancia da bomba<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/performace-curve-brake-horsepower-min.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14998 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/performace-curve-brake-horsepower-min.png\" alt=\"curva de desempenho - cavalos-for\u00e7a do freio\" width=\"1005\" height=\"595\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/performace-curve-brake-horsepower-min.png\" \/><\/a><\/p>\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>A pot\u00eancia necess\u00e1ria para acionar a bomba \u00e9 geralmente conhecida como pot\u00eancia dos freios.\u00a0Pode ser expresso em termos de pot\u00eancia da \u00e1gua dividida por efici\u00eancia.\u00a0Engenharia T\u00e9rmica Pot\u00eancia de freio A\u00a0pot\u00eancia necess\u00e1ria\u00a0para acionar uma\u00a0bomba centr\u00edfuga\u00a0\u00e9 geralmente conhecida como\u00a0pot\u00eancia\u00a0dos\u00a0freios\u00a0.\u00a0Pode ser expresso em termos de pot\u00eancia da \u00e1gua dividida por efici\u00eancia. No sistema m\u00e9trico,\u00a0\u00a0s\u00e3o utilizados\u00a0quilowatts (kW)\u00a0.\u00a0Devido a perdas &#8230; <a title=\"O que \u00e9 pot\u00eancia de freio &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-potencia-de-freio-definicao\/\" aria-label=\"More on O que \u00e9 pot\u00eancia de freio &#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 pot\u00eancia de freio - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"A pot\u00eancia necess\u00e1ria para acionar a bomba \u00e9 geralmente conhecida como pot\u00eancia dos freios. 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