{"id":6608,"date":"2025-09-10T15:12:17","date_gmt":"2025-09-10T15:12:17","guid":{"rendered":"https:\/\/www.ub.edu\/cercles\/?p=6608"},"modified":"2025-09-10T15:16:09","modified_gmt":"2025-09-10T15:16:09","slug":"de-les-maquines-termiques-a-les-piles-de-combustible-reptes-actuals-i-futurs-de-la-conversio-denergia","status":"publish","type":"post","link":"https:\/\/www.ub.edu\/cercles\/?p=6608","title":{"rendered":"De les m\u00e0quines t\u00e8rmiques a les piles de combustible. Reptes actuals i futurs de la conversi\u00f3 d\u2019energia"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6608\" class=\"elementor elementor-6608\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6355b93f e-flex e-con-boxed e-con e-parent\" data-id=\"6355b93f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-763082ba e-con-full e-flex e-con e-child\" data-id=\"763082ba\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-499425af elementor-widget elementor-widget-heading\" data-id=\"499425af\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">De les m\u00e0quines t\u00e8rmiques a les piles de combustible. Reptes actuals i futurs de la conversi\u00f3 d\u2019energia<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77e3c63f elementor-widget elementor-widget-text-editor\" data-id=\"77e3c63f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><strong>Josep M. Salla Tarrag\u00f3<\/strong><br \/>Universitat Polit\u00e8cnica de Catalunya<\/p><p>\u00a0<\/p><p>Les societats avan\u00e7ades necessiten cada vegada m\u00e9s energia d\u2019alta qualitat per mantenir i augmentar el seu nivell de vida. Les m\u00e0quines t\u00e8rmiques i la seva capacitat de convertir energia f\u00f2ssil en energia m\u00e9s \u00fatil, com \u00e9s, per exemple, l\u2019electricitat, continuen sent unes valuoses eines, sense les quals dif\u00edcilment s\u2019haurien assolit ni es podrien mantenir les quotes de benestar actuals.A causa dels efectes mediambientals provocats, del baix rendiment de conversi\u00f3 i de la depend\u00e8ncia que es t\u00e9 del petroli, hi ha la consci\u00e8ncia <\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-22f1e91e e-con-full e-flex e-con e-child\" data-id=\"22f1e91e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-64592d5c elementor-widget elementor-widget-sidebar\" data-id=\"64592d5c\" data-element_type=\"widget\" data-widget_type=\"sidebar.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<aside id=\"block-46\" class=\"widget widget_block widget_search\"><form role=\"search\" method=\"get\" action=\"https:\/\/www.ub.edu\/cercles\/\" class=\"wp-block-search__button-outside wp-block-search__text-button wp-block-search\"    ><label class=\"wp-block-search__label screen-reader-text\" for=\"wp-block-search__input-1\" >Buscar<\/label><div class=\"wp-block-search__inside-wrapper\"  style=\"width: 611px\"><input class=\"wp-block-search__input\" id=\"wp-block-search__input-1\" placeholder=\"\" value=\"\" type=\"search\" name=\"s\" required \/><button aria-label=\"Buscar\" class=\"wp-block-search__button wp-element-button\" type=\"submit\" >Buscar<\/button><\/div><\/form><\/aside><aside id=\"block-33\" class=\"widget widget_block\">\n<ul class=\"wp-block-list\">\n<li><\/li>\n<\/ul>\n<\/aside><aside id=\"block-45\" class=\"widget widget_block widget_media_image\">\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" fetchpriority=\"high\" width=\"730\" height=\"1024\" src=\"https:\/\/www.ub.edu\/cercles\/wp-content\/uploads\/2025\/12\/Cercles-28_coberta-730x1024.jpg\" alt=\"\" class=\"wp-image-7134\" srcset=\"https:\/\/www.ub.edu\/cercles\/wp-content\/uploads\/2025\/12\/Cercles-28_coberta-730x1024.jpg 730w, https:\/\/www.ub.edu\/cercles\/wp-content\/uploads\/2025\/12\/Cercles-28_coberta-214x300.jpg 214w, https:\/\/www.ub.edu\/cercles\/wp-content\/uploads\/2025\/12\/Cercles-28_coberta-768x1077.jpg 768w, https:\/\/www.ub.edu\/cercles\/wp-content\/uploads\/2025\/12\/Cercles-28_coberta.jpg 900w\" sizes=\"(max-width: 730px) 100vw, 730px\" \/><\/figure>\n<\/aside><aside id=\"block-37\" class=\"widget widget_block widget_text\">\n<p><strong>Revista indexada a:<\/strong>&nbsp;SCOPUS, SJR. 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Attribution-NonCommercial-NoDerivatives 4.0 <a href=\"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/\" data-type=\"URL\" data-id=\"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/\" target=\"_blank\" rel=\"noreferrer noopener\">International\u00a0(CC BY-NC-ND 4.0)<\/a><\/figcaption><\/figure>\n<\/aside><aside id=\"block-48\" class=\"widget widget_block widget_text\">\n<p><\/p>\n<\/aside><aside id=\"block-42\" class=\"widget widget_block widget_text\">\n<p><\/p>\n<\/aside><aside id=\"block-47\" class=\"widget widget_block widget_text\">\n<p><\/p>\n<\/aside>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>De les m\u00e0quines t\u00e8rmiques a les piles de combustible. Reptes actuals i futurs de la conversi\u00f3 d\u2019energia Josep M. Salla Tarrag\u00f3Universitat Polit\u00e8cnica de Catalunya \u00a0 Les societats avan\u00e7ades necessiten cada vegada m\u00e9s energia d\u2019alta qualitat per mantenir i augmentar el seu nivell de vida. Les m\u00e0quines t\u00e8rmiques i la seva capacitat de convertir energia f\u00f2ssil [&hellip;]<\/p>\n","protected":false},"author":136,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","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":"set","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[942],"tags":[],"class_list":["post-6608","post","type-post","status-publish","format-standard","hentry","category-temes-num-9"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>De les m\u00e0quines t\u00e8rmiques a les piles de combustible. 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