{"id":606,"date":"2018-10-17T00:15:56","date_gmt":"2018-10-16T16:15:56","guid":{"rendered":"https:\/\/plasticmoldco.com\/?p=606"},"modified":"2018-10-17T00:15:56","modified_gmt":"2018-10-16T16:15:56","slug":"chapter-24-cooling-system-equations","status":"publish","type":"post","link":"https:\/\/www.plasticmoldco.com\/es\/2018\/10\/17\/capitulo-24-ecuaciones-del-sistema-de-refrigeracion\/","title":{"rendered":"Cap\u00edtulo 24, Ecuaciones del sistema de refrigeraci\u00f3n"},"content":{"rendered":"<div id=\"titlep\">\n<div><\/div>\n<\/div>\n<h1>Tiempo de enfriamiento<\/h1>\n<p>Te\u00f3ricamente, el tiempo de enfriamiento es proporcional al cuadrado del espesor de la pared de la pieza m\u00e1s pesada o a la potencia de 1,6 para el mayor di\u00e1metro del canal. Es decir<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1288 alignnone\" title=\"Tiempo de enfriamiento\" src=\"https:\/\/web.archive.org\/web\/20130131102810im_\/http:\/\/www.moldchina.org\/wp-content\/uploads\/2011\/10\/Cooling-time.gif\" alt=\"Tiempo de enfriamiento\" width=\"477\" height=\"202\" \/><\/p>\n<p>donde la difusividad t\u00e9rmica del pol\u00edmero fundido se define como<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1289 alignnone\" title=\"Tiempo de refrigeraci\u00f3n-2\" src=\"https:\/\/web.archive.org\/web\/20130131102810im_\/http:\/\/www.moldchina.org\/wp-content\/uploads\/2011\/10\/Cooling-time-2.gif\" alt=\"Tiempo de enfriamiento\" width=\"453\" height=\"86\" \/><\/p>\n<p>En otras palabras, duplicar el grosor de la pared cuadruplica el tiempo de enfriamiento.<\/p>\n<h1>N\u00famero de Reynolds y flujo de refrigerante<\/h1>\n<p>Si el flujo de refrigerante es turbulento o no, puede determinarse por el n\u00famero de Reynolds (Re), como se indica en la Tabla 1. El n\u00famero de Reynolds se define como:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1290 alignnone\" title=\"Tiempo de refrigeraci\u00f3n-3\" src=\"https:\/\/web.archive.org\/web\/20130131102810im_\/http:\/\/www.moldchina.org\/wp-content\/uploads\/2011\/10\/Cooling-time-3.gif\" alt=\"Tiempo de refrigeraci\u00f3n-3\" width=\"287\" height=\"79\" \/><\/p>\n<p>donde\u00a0<strong>\u03c1<\/strong>\u00a0es la densidad del refrigerante,\u00a0<strong>U<\/strong>\u00a0es la velocidad media del refrigerante,\u00a0<strong>d<\/strong>\u00a0es el di\u00e1metro del canal de refrigeraci\u00f3n, y\u00a0\u00a0<strong>\u03b7<\/strong>\u00a0es la viscosidad din\u00e1mica del refrigerante.<\/p>\n<p>TABLA 1. Tipos de flujo de refrigerante y sus correspondientes<br \/>\nIntervalos de n\u00fameros Reynolds<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1291\" title=\"Tiempo de refrigeraci\u00f3n-4\" src=\"https:\/\/web.archive.org\/web\/20130131102810im_\/http:\/\/www.moldchina.org\/wp-content\/uploads\/2011\/10\/Cooling-time-4.gif\" alt=\"Tiempo de refrigeraci\u00f3n-4\" width=\"347\" height=\"182\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>Tiempo de enfriamiento Te\u00f3ricamente, el tiempo de enfriamiento es proporcional al cuadrado del grosor de la pared de la pieza m\u00e1s pesada o a la potencia de 1,6 para el mayor di\u00e1metro del canal. Es decir: donde la difusividad t\u00e9rmica del pol\u00edmero fundido se define como En otras palabras, duplicar el grosor de la pared cuadruplica el tiempo de enfriamiento. N\u00famero de Reynolds y flujo de refrigerante Si [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[15],"tags":[],"class_list":["post-606","post","type-post","status-publish","format-standard","hentry","category-mould-technology-blog-1"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chapter 24, Cooling system equations - Plastic Mold | China Mold Maker<\/title>\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.plasticmoldco.com\/es\/2018\/10\/17\/capitulo-24-ecuaciones-del-sistema-de-refrigeracion\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chapter 24, Cooling system equations - Plastic Mold | China Mold Maker\" \/>\n<meta property=\"og:description\" content=\"Cooling time Theoretically, cooling time is proportional to the square of the heaviest part wall thickness or the power of 1.6 for the largest runner diameter. That is: where the thermal diffusivity of polymer melt is defined as In other words, doubling the wall thickness quadruples the cooling time. 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