{"id":41793,"date":"2019-09-30T05:05:46","date_gmt":"2019-09-30T04:05:46","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/que-es-el-metodo-2k-metodo-3k-caida-de-presion-local-definicion\/"},"modified":"2020-01-20T13:46:12","modified_gmt":"2020-01-20T12:46:12","slug":"que-es-el-metodo-2k-metodo-3k-caida-de-presion-local-definicion","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/es\/que-es-el-metodo-2k-metodo-3k-caida-de-presion-local-definicion\/","title":{"rendered":"\u00bfQu\u00e9 es el m\u00e9todo 2K? M\u00e9todo 3K: ca\u00edda de presi\u00f3n local: definici\u00f3n"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">El m\u00e9todo 2-K es ventajoso sobre otro m\u00e9todo, especialmente en la regi\u00f3n de flujo laminar. El m\u00e9todo 3K es particularmente preciso para un sistema con accesorios grandes. Ingenieria termal<\/div>\n<\/div>\n<div><\/div>\n<div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-60 lgc-tablet-grid-60 lgc-mobile-grid-100 lgc-equal-heights  lgc-first\">\n<div class=\"inside-grid-column\">\n<h2><span>M\u00e9todo 2K &#8211; M\u00e9todo 3K<\/span><\/h2>\n<p><span>El valor K representa el\u00a0<\/span><strong><span>m\u00faltiplo de\u00a0<\/span><a title=\"Cabezal de velocidad\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/bernoullis-equation-bernoullis-principle\/velocity-head\/\"><span>las cabezas<\/span><\/a><\/strong><span><strong>\u00a0de\u00a0<\/strong><strong><a title=\"Cabezal de velocidad\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/bernoullis-equation-bernoullis-principle\/velocity-head\/\">velocidad<\/a><\/strong>\u00a0que se perder\u00e1n por el fluido que pasa a trav\u00e9s del accesorio.\u00a0La ecuaci\u00f3n para el c\u00e1lculo de la p\u00e9rdida de presi\u00f3n del elemento hidr\u00e1ulico es, por lo tanto:<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/K-value-method.png\"><img loading=\"lazy\" class=\"size-full wp-image-14691 aligncenter lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/K-value-method.png\" alt=\"M\u00e9todo de valor K\" width=\"133\" height=\"63\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/K-value-method.png\" \/><\/a><span>Por lo tanto, la ecuaci\u00f3n para el c\u00e1lculo de la p\u00e9rdida de presi\u00f3n de todo el sistema hidr\u00e1ulico es:<\/span><br \/>\n<a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/K-value-head-loss.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14690 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/K-value-head-loss.png\" alt=\"Valor K - p\u00e9rdida de carga\" width=\"240\" height=\"61\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/K-value-head-loss.png\" \/><\/a><br \/>\n<span>El\u00a0<\/span><strong><span>valor K<\/span><\/strong><span>\u00a0se puede caracterizar para varios\u00a0<\/span><a title=\"R\u00e9gimen de flujo\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/flow-regime\/\"><span>reg\u00edmenes de flujo<\/span><\/a><span>\u00a0(es decir, de acuerdo con el\u00a0<\/span><a title=\"Numero Reynolds\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/reynolds-number\/\"><span>n\u00famero de Reynolds<\/span><\/a><span>\u00a0) y esto hace que sea m\u00e1s preciso que el m\u00e9todo de longitud equivalente.<\/span><\/p>\n<p><span>Existen varios otros m\u00e9todos para calcular la p\u00e9rdida de presi\u00f3n de los accesorios, estos m\u00e9todos son\u00a0<\/span><strong><span>m\u00e1s sofisticados<\/span><\/strong><span>\u00a0y tambi\u00e9n\u00a0<\/span><strong><span>m\u00e1s precisos<\/span><\/strong><span>\u00a0:<\/span><\/p>\n<ul>\n<li><strong><span>M\u00e9todo 2K<\/span><\/strong><span>\u00a0.\u00a0El m\u00e9todo 2K es una t\u00e9cnica desarrollada por Hooper BW para predecir la p\u00e9rdida de cabeza en un codo, v\u00e1lvula o tee.\u00a0El m\u00e9todo 2K mejora el m\u00e9todo del exceso de carga al caracterizar el cambio en la p\u00e9rdida de presi\u00f3n debido al\u00a0<\/span><strong><span>n\u00famero variable de Reynolds<\/span><\/strong><span>\u00a0.\u00a0El m\u00e9todo 2-K es ventajoso sobre otro m\u00e9todo, especialmente en la\u00a0<\/span><a title=\"Flujo Laminar - Flujo Viscoso\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-flujo-laminar-flujo-viscoso-definicion\/\"><strong><span>regi\u00f3n de flujo laminar<\/span><\/strong><\/a><span>\u00a0.<\/span><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/2K-method.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14689 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/2K-method.png\" alt=\"M\u00e9todo 2K\" width=\"199\" height=\"49\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/2K-method.png\" \/><\/a><\/li>\n<\/ul>\n<ul>\n<li><strong><span>M\u00e9todo 3K<\/span><\/strong><span>\u00a0.\u00a0El m\u00e9todo 3K (por Ron Darby en 1999) mejora a\u00fan m\u00e1s la precisi\u00f3n del c\u00e1lculo de la p\u00e9rdida de presi\u00f3n al caracterizar tambi\u00e9n el\u00a0<\/span><strong><span>cambio en las proporciones geom\u00e9tricas<\/span><\/strong><span>\u00a0de un accesorio a medida que cambia su tama\u00f1o.\u00a0Esto hace que el m\u00e9todo 3K sea particularmente\u00a0<\/span><strong><span>preciso para un sistema con accesorios grandes<\/span><\/strong><span>\u00a0.<\/span><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/3K-method.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14688 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/3K-method.png\" alt=\"M\u00e9todo 3K\" width=\"215\" height=\"58\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/3K-method.png\" \/><\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-40 lgc-tablet-grid-40 lgc-mobile-grid-100 lgc-equal-heights  lgc-last\">\n<div class=\"inside-grid-column\">\n<h2><span>Resumen:<\/span><\/h2>\n<ul>\n<li><span>La p\u00e9rdida de carga del sistema hidr\u00e1ulico se divide en\u00a0<\/span><strong><span>dos categor\u00edas principales<\/span><\/strong><span>\u00a0:<\/span>\n<ul>\n<li><strong><span>P\u00e9rdida de carga importante<\/span><\/strong><span>\u00a0: debido a la fricci\u00f3n en tuber\u00edas rectas<\/span><\/li>\n<li><strong><span>P\u00e9rdida de carga menor<\/span><\/strong><span>\u00a0: debido a componentes como v\u00e1lvulas, curvas &#8230;<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>Se\u00a0puede usar\u00a0<\/span><strong><span>una forma especial de la ecuaci\u00f3n de Darcy<\/span><\/strong><span>\u00a0para calcular\u00a0<\/span><strong><span>p\u00e9rdidas menores<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<li><span>Las p\u00e9rdidas menores son m\u00e1s o menos proporcional a la\u00a0<\/span><strong><span>cuadrado de la velocidad de flujo<\/span><\/strong><span>\u00a0y por lo tanto puede ser f\u00e1cil integrados en la ecuaci\u00f3n de Darcy-Weisbach a trav\u00e9s de\u00a0<\/span><strong><span>coeficiente de resistencia K<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<li><span>Como p\u00e9rdida local de presi\u00f3n,\u00a0tambi\u00e9n se puede considerar\u00a0<\/span><strong><span>la aceleraci\u00f3n del fluido en un canal calentado<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<\/ul>\n<p><span>Existen los siguientes m\u00e9todos:<\/span><\/p>\n<ul>\n<li><strong><span>M\u00e9todo de longitud equivalente<\/span><\/strong><\/li>\n<li><strong><span>M\u00e9todo K (coeficiente de resistencia, m\u00e9todo)<\/span><\/strong><\/li>\n<li><strong><span>M\u00e9todo 2K<\/span><\/strong><\/li>\n<li><strong><span>M\u00e9todo 3K<\/span><\/strong><\/li>\n<\/ul>\n<h2><span>\u00bfPor qu\u00e9 la p\u00e9rdida de cabeza es tan importante?<\/span><\/h2>\n<p><span>Como se puede ver en la imagen, la p\u00e9rdida de carga es\u00a0<\/span><strong><span>una caracter\u00edstica clave<\/span><\/strong><span>\u00a0de cualquier sistema hidr\u00e1ulico.\u00a0En los sistemas, en los que se debe mantener cierto caudal (por ejemplo, para proporcionar suficiente enfriamiento o transferencia de calor desde el\u00a0<\/span><a title=\"N\u00facleo del reactor\" href=\"https:\/\/www.reactor-physics.com\/what-is-reactor-core-definition\/\"><span>n\u00facleo del reactor<\/span><\/a><span>\u00a0),\u00a0<\/span><strong><span>el equilibrio<\/span><\/strong><span>\u00a0de la\u00a0<\/span><strong><span>p\u00e9rdida de carga<\/span><\/strong><span>\u00a0y la\u00a0\u00a0<\/span><strong><span>carga a\u00f1adida<\/span><\/strong><span>\u00a0por una bomba determina la velocidad de flujo a trav\u00e9s del sistema.<\/span><\/p>\n<figure id=\"attachment_14299\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14299\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H.png\"><img loading=\"lazy\" class=\"size-medium wp-image-14299 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H-300x207.png\" alt=\"Diagrama caracter\u00edstico de QH de la bomba centr\u00edfuga y de la tuber\u00eda\" width=\"300\" height=\"207\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H-300x207.png\" \/><\/a><figcaption id=\"caption-attachment-14299\" class=\"wp-caption-text\"><span>Diagrama caracter\u00edstico de QH de la bomba centr\u00edfuga y de la tuber\u00eda<\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div><\/div>\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 art\u00edculo se basa en la traducci\u00f3n autom\u00e1tica del art\u00edculo original en ingl\u00e9s. Para m\u00e1s informaci\u00f3n vea el art\u00edculo en ingl\u00e9s. Puedes ayudarnos. Si desea corregir la traducci\u00f3n, env\u00edela a: translations@nuclear-power.com o complete el formulario de traducci\u00f3n en l\u00ednea. Agradecemos su ayuda, actualizaremos la traducci\u00f3n lo antes posible. Gracias.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>El m\u00e9todo 2-K es ventajoso sobre otro m\u00e9todo, especialmente en la regi\u00f3n de flujo laminar. El m\u00e9todo 3K es particularmente preciso para un sistema con accesorios grandes. Ingenieria termal M\u00e9todo 2K &#8211; M\u00e9todo 3K El valor K representa el\u00a0m\u00faltiplo de\u00a0las cabezas\u00a0de\u00a0velocidad\u00a0que se perder\u00e1n por el fluido que pasa a trav\u00e9s del accesorio.\u00a0La ecuaci\u00f3n para el &#8230; <a title=\"\u00bfQu\u00e9 es el m\u00e9todo 2K? M\u00e9todo 3K: ca\u00edda de presi\u00f3n local: definici\u00f3n\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/es\/que-es-el-metodo-2k-metodo-3k-caida-de-presion-local-definicion\/\" aria-label=\"M\u00e1s en \u00bfQu\u00e9 es el m\u00e9todo 2K? M\u00e9todo 3K: ca\u00edda de presi\u00f3n local: definici\u00f3n\">Leer m\u00e1s<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[16],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u00bfQu\u00e9 es el m\u00e9todo 2K? M\u00e9todo 3K: ca\u00edda de presi\u00f3n local: definici\u00f3n<\/title>\n<meta name=\"description\" content=\"El m\u00e9todo 2-K es ventajoso sobre otro m\u00e9todo, especialmente en la regi\u00f3n de flujo laminar. 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