{"id":56846,"date":"2023-03-22T10:29:02","date_gmt":"2023-03-22T08:29:02","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=56846"},"modified":"2023-03-22T10:29:02","modified_gmt":"2023-03-22T08:29:02","slug":"these-romain-hubert-high-thermal-conductivity-phase-change-materials-for-thermal-management-in-high-power-electronic-devices","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/theses-2022\/these-romain-hubert-high-thermal-conductivity-phase-change-materials-for-thermal-management-in-high-power-electronic-devices.html","title":{"rendered":"THESE Romain HUBERT-\"High thermal conductivity phase change materials for thermal management in high power electronic devices High thermal conductivity phase change materials for thermal management in high power electronic devices\"."},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_1fqxf6kxxe2te\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-56846'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lfjf6qq8-7d25a99a971934b54de869ba5bdc91e5\">\n#top .av-special-heading.av-lfjf6qq8-7d25a99a971934b54de869ba5bdc91e5{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-lfjf6qq8-7d25a99a971934b54de869ba5bdc91e5 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-lfjf6qq8-7d25a99a971934b54de869ba5bdc91e5 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-lfjf6qq8-7d25a99a971934b54de869ba5bdc91e5 av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESIS: Romain HUBERT - \"High thermal conductivity phase change materials for thermal management in high power electronic devices\".<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<p><strong>Romain HUBERT<br \/>\n<\/strong><\/p>\n<p>Final exam: 12 January 2022<strong><br \/>\n<\/strong>IEMN Amphitheatre - Central Laboratory - Villeneuve d'Ascq<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury :<\/span><\/strong><\/h5>\n<ul>\n<li><span dir=\"ltr\" role=\"presentation\">Marie Duquesne<\/span> <span dir=\"ltr\" role=\"presentation\">HDR Lecturer at Bordeaux INP-ENSCPB<\/span> <span dir=\"ltr\" role=\"presentation\">Rapporteure<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Jaona Randrianalisoa<\/span> <span dir=\"ltr\" role=\"presentation\">HDR Lecturer at ESIReims<\/span> <span dir=\"ltr\" role=\"presentation\">Rapporteur<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Lingai Luo<\/span> <span dir=\"ltr\" role=\"presentation\">Director of Research CNRS Nantes<\/span> <span dir=\"ltr\" role=\"presentation\">President<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Michel Quintard<\/span> <span dir=\"ltr\" role=\"presentation\">Director of Research CNRS Toulouse<\/span> <span dir=\"ltr\" role=\"presentation\">Examinateur<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Martin Raynaud<\/span> <span dir=\"ltr\" role=\"presentation\">Thermal expert at Thales Alenia Space<\/span> <span dir=\"ltr\" role=\"presentation\">Examinateur<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Philippe Pernod<\/span> <span dir=\"ltr\" role=\"presentation\">Professor at Centrale Lille\/IEMN<\/span> <span dir=\"ltr\" role=\"presentation\">Co-Director<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Philippe Coquet<\/span> <span dir=\"ltr\" role=\"presentation\">Professor at the University of Lille\/CINTRA<\/span> <span dir=\"ltr\" role=\"presentation\">Co-Director<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Olivier Bou Matar<\/span> <span dir=\"ltr\" role=\"presentation\">Professor at Centrale Lille\/IEMN<\/span> <span dir=\"ltr\" role=\"presentation\">Co-Encadrant<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Stefano Giordano<\/span> <span dir=\"ltr\" role=\"presentation\">Research Fellow at the IEMN<\/span> <span dir=\"ltr\" role=\"presentation\">Invit\u00e9<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Jerome Foncin<\/span> <span dir=\"ltr\" role=\"presentation\">Thermal expert at Thales LAS<\/span> <span dir=\"ltr\" role=\"presentation\">Invit\u00e9<\/span><\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>Phase change materials (P C M) are widely used for thermal management applications because of their high latent heat of fusion. Despite this, P C M's suffer from their low thermal conductivity, which limits the propagation of heat around the source, and without a significant improvement in conductivity, melting only takes place around the heat source, greatly limiting the performance of the device. To counter this, a multitude of thermal reinforcements have been developed and studied in recent years. A review of the literature details the study of these different reinforcements and their performance when combined with P C M in the first chapter of this manuscript. The second chapter presents a new reinforcement based on the use of metal lattices and a model for evaluating its thermal properties. The next chapter studies the use of such a reinforcement for the thermal management of a concrete case, both theoretically and experimentally. Finally, the last chapter presents the use of a new type of reinforcement based on the Cas cadedstorage principle, which consists of locally modifying the proportion of reinforcement in order to optimise heat transfer and heat absorption by the P C M.<\/p>\n<h5>Abstract:<\/h5>\n<p>Phase Change Material (P C M) have been widely used for thermal energy storage due to their highlatent heat of fusion for thermal management applications. However, P C M suffer from their verylow thermal conductivity which limits heat spreading around the heat source. Without properthermal conductivity enhancement, melting would occur mainly around the heat source and heatwould be conducted too slowly for the device to be efficient. To do so, a variety of fillers have beenendeveloped and extensively studied in the past decades. A thorough literature review of the differ-ent fillers as well as their behavior when combined with P C M is presented in the first part of themanuscript. Then, a new kind of architected filler based on metal lattice structure is presentedalongside with a model allowing to evaluate its performances. The following chapter presents acombined theoretical and experimental study on the implementation of such filler on a relevantuse-case. The final chapter of the thesis displays another kind of fillers based on the cascadedstorage principle which consists in adapting locally the filler's volume ratio to enhance heat con-duction and optimize P C M heat absorption<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[316],"tags":[],"class_list":["post-56846","post","type-post","status-publish","format-standard","hentry","category-theses-2022"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/56846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=56846"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/56846\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=56846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=56846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=56846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}