{"id":99569,"date":"2010-05-03T00:00:00","date_gmt":"2010-05-03T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/water-evaporation-in-vertical-tubes-an-analytical-approach-for-the-subcooled-flow-boiling-region-and-development-of-a-method-for-evaluation-and-sizing-evaporators\/"},"modified":"2010-05-03T00:00:00","modified_gmt":"2010-05-03T00:00:00","slug":"water-evaporation-in-vertical-tubes-an-analytical-approach-for-the-subcooled-flow-boiling-region-and-development-of-a-method-for-evaluation-and-sizing-evaporators","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/politecnica-de-madrid\/water-evaporation-in-vertical-tubes-an-analytical-approach-for-the-subcooled-flow-boiling-region-and-development-of-a-method-for-evaluation-and-sizing-evaporators\/","title":{"rendered":"Water evaporation in vertical tubes: an analytical approach for the subcooled flow boiling region and development of a method for evaluation and sizing evaporators"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Zambrana Gonz\u00e1lez <\/strong><\/h2>\n<p>The present thesis analyscs in detall the process of water evaporation for convective upward flows in vertical tubes, used in industrial applications. Both, the heat transfer process and the pressure drop mechanism, are considered. However, special attcntion has been put on the heat transfer process in the transition from pur\u00e9 liquid to two-pha.Se flow, known as subcooled \u00ediow boiling regi\u00f3n. the empirical correlations for the heat transfer coefficient on the water side for subcooled flow boiling regi\u00f3n, provided by the usual bibliography, do not ensure continuity between this regi\u00f3n and the pur\u00e9 liquid and two-phasc \u00ediow regions. This is, in fact, opposite to the physics of the phenomenon. in order to get continuity between the subcooled flow boiling regi\u00f3n and its extremes, ensuring consequently physical coherence, this thesis proposes to use an analytical corrclation of elliptical type for the water heat transfer coefficient in the subcooled flow boiling regi\u00f3n. using this correlation in the transition regi\u00f3n for the water heat transfer coefficient together with other empirical correlations commonly used for pur\u00e9 liquid and two-phase flow, has allowed developing a method of calculation for a single tube. Similar methods or correlations for the pressure drop determination in each of the regions have been used. at the same time, to extend the method developed for a single tube to a bank of tubes has ailowed to develop an crigineering tool valid for performance analyses and\/or sizing of industrial evaporators. the tool here developed has severa! Advantages when it is compared to the ones used commonly in the industry, the e-ntu methods. The first advantage is the fact itself of being able to analyse evaporators where phase change occurs inside them, determining dynainically where each regi\u00f3n begins and cnds (pur\u00e9 liquid, subcooled flow boiling regi\u00f3n and two-phasc flow regi\u00f3n). The second advantage is that this tool allows a local analysis of the heat exchanger instead of a global one, as usual. It is possiblc theu for the designer a better evaluation of the evaporator under study.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Water evaporation in vertical tubes: an analytical approach for the subcooled flow boiling region and development of a method for evaluation and sizing evaporators<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Water evaporation in vertical tubes: an analytical approach for the subcooled flow boiling region and development of a method for evaluation and sizing evaporators <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Zambrana Gonz\u00e1lez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 05\/03\/2010<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Pedro Perez Del Notario Martinez Mara\u00f1on<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: isidoro Martinez herranz <\/li>\n<li>pedro acisclo Rodriguez aumente (vocal)<\/li>\n<li>M\u00aa desamparados Ribes greus (vocal)<\/li>\n<li>Jos\u00e9 ignacio Nogueira goriba (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Zambrana Gonz\u00e1lez The present thesis analyscs in detall the process of water evaporation for convective upward [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[16008,46838],"tags":[16281,91537,203146,155756,55829,91051],"class_list":["post-99569","post","type-post","status-publish","format-standard","hentry","category-politecnica-de-madrid","category-procesos-de-transferencia-vapor-liquido","tag-isidoro-Martinez-herranz","tag-jose-ignacio-nogueira-goriba","tag-jose-zambrana-gonzalez","tag-ma-desamparados-ribes-greus","tag-pedro-acisclo-rodriguez-aumente","tag-pedro-perez-del-notario-Martinez-maranon"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/99569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=99569"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/99569\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=99569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=99569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=99569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}