{"id":15531,"date":"2025-06-24T11:19:10","date_gmt":"2025-06-24T09:19:10","guid":{"rendered":"https:\/\/www.nlr.org\/?p=15531"},"modified":"2026-02-23T08:20:55","modified_gmt":"2026-02-23T07:20:55","slug":"brava","status":"publish","type":"post","link":"https:\/\/www.nlr.org\/nl\/newsroom\/case\/brava\/","title":{"rendered":"R&amp;D case: Baankbrekende brandstofcel&shy;technologie voor vliegtuigen"},"content":{"rendered":"\n<p><strong>Project: BRAVA (Breakthrough fuel cell technologies for aviation<\/strong>)<\/p>\n\n\n\n<p>Het <a href=\"https:\/\/brava-project.eu\/\" target=\"_blank\" rel=\"noreferrer noopener\">BRAVA<\/a>-project richt zich op het ontwikkelen van innovatief warmtebeheer voor <em>fuel cell-based power generation system<\/em>s (PGS) voor vliegtuigen om de massa- en vriesbeperkingen van conventionele koelsystemen te aan te pakken. Hiermee wordt een belangrijke stap gezet om vliegen op waterstof mogelijk te maken.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">De uitdaging<\/h2>\n\n\n\n<p>Conventionele koelsystemen gebruiken een vloeistof (meestal een mengsel van glycol en water) die wordt rondgepompt om de brandstofcellen te koelen. Dit resulteert echter in een systeemgewicht dat te hoog is voor toepassingen in vliegtuigen. Bovendien is de vloeistof gevoelig voor bevriezing onder koude omstandigheden, wat een extra uitdaging vormt. Om deze beperkingen aan te pakken, heeft het BRAVA-project een innovatief tweefasen-koelsysteem ontwikkelt, waarbij de term &#8217;twee-fasen&#8217; verwijst naar de faseovergang van de vloeistof van vloeibaar naar gas.<\/p>\n\n\n\n<div class=\"wp-block-group alignwide has-background is-layout-constrained wp-block-group-is-layout-constrained\" style=\"background-color:#eff5fb\">\n<h2 class=\"wp-block-heading\">De oplossing<\/h2>\n\n\n\n<p>Het gewicht van het koelsysteem en het benodigde pompvermogen kunnen aanzienlijk worden verlaagd door gebruik te maken van de verdampingswarmte van een vloeistof. In een tweefasen-koelsysteem wordt een vloeistof rondgepompt die in de brandstofcellen verdampt en daarbij de restwarmte opneemt. Hierdoor is de benodigde vloeistofstroom aanzienlijk kleiner dan bij conventionele vloeistofkoeling, waardoor een veel kleinere pomp en smallere buisdiameters nodig zijn. <a href=\"https:\/\/doi.org\/10.3390\/en18040849\" target=\"_blank\" rel=\"noreferrer noopener\">Gedetailleerde analyses<\/a> door NLR en Airbus laten zien dat het gewicht van een vliegtuig voor 100 passagiers met vier motoren met ongeveer 1000 kg kan worden verlaagd wanneer een tweefasen-koelsysteem wordt gebruikt in plaats van een conventioneel koelsysteem met glycol-water.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"715\" src=\"https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-Fuel-Cell-Engine-Model-Reveal_AI-STO-1079-021-1024x715.jpg\" alt=\"\" class=\"wp-image-15527\" srcset=\"https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-Fuel-Cell-Engine-Model-Reveal_AI-STO-1079-021-1024x715.jpg 1024w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-Fuel-Cell-Engine-Model-Reveal_AI-STO-1079-021-300x209.jpg 300w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-Fuel-Cell-Engine-Model-Reveal_AI-STO-1079-021-768x536.jpg 768w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-Fuel-Cell-Engine-Model-Reveal_AI-STO-1079-021-1536x1072.jpg 1536w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-Fuel-Cell-Engine-Model-Reveal_AI-STO-1079-021-2048x1429.jpg 2048w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-Fuel-Cell-Engine-Model-Reveal_AI-STO-1079-021-1320x921.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Wat hebben we gedaan?<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-f0342b05 wp-block-columns-is-layout-flex\" style=\"margin-top:0;margin-bottom:0\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><span style=\"font-size: revert; color: inherit; background-color: var(--wp--preset--color--white); font-weight: inherit;\">Om de haalbaarheid van het tweefasen-koelconcept te onderzoeken, heeft NLR eerst een <a href=\"https:\/\/doi.org\/10.3390\/aerospace12030188\" target=\"_blank\" rel=\"noreferrer noopener\">testopstelling<\/a> gebouwd met een koelvermogen van 20 kW. De testresultaten zijn vervolgens gebruikt om een demonstrator te ontwerpen en bouwen voor een tweefasen-koelsysteem met een koelvermogen van 240 kW. <\/span><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><span style=\"font-size: revert; color: inherit; background-color: var(--wp--preset--color--white); font-weight: inherit;\"><span style=\"font-size: revert; color: inherit; background-color: var(--wp--preset--color--white); font-weight: inherit;\">In deze opstellingen werden elektrische heaters gebruikt om de warmtelast van een brandstofcel te simuleren. Daarnaast is een 5 kW tweefasen-koelsysteem met succes getest met een functionerende brandstofcelstack bij Aerostack om het concept te valideren<\/span><\/span>.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-b653aba5 wp-block-columns-is-layout-flex\" style=\"border-width:1px;padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Project partners:<\/h3>\n\n\n\n<p>Aerostack GmbH, Airbus Operations GmbH, Airbus Operations SL, CNRS, Heraeus Deutschalnd GmbH, Liebherr Aerospace Toulouse SAS, Madit Metal SL, Morpheus Designs SL, SYENSQO, Technische Universitat Berlin<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Project timeline:<\/h3>\n\n\n\n<p>2023 &#8211; 2026<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"590\" src=\"https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/03\/clean_hydrogen_logo-01-1024x590.jpg\" alt=\"Clean_hydrogen_logo\" class=\"wp-image-12252\" srcset=\"https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/03\/clean_hydrogen_logo-01-1024x590.jpg 1024w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/03\/clean_hydrogen_logo-01-300x173.jpg 300w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/03\/clean_hydrogen_logo-01-768x443.jpg 768w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/03\/clean_hydrogen_logo-01-1536x885.jpg 1536w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/03\/clean_hydrogen_logo-01-2048x1180.jpg 2048w, https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/03\/clean_hydrogen_logo-01-1320x761.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"378\" height=\"150\" src=\"https:\/\/www.nlr.org\/wp-content\/uploads\/2024\/02\/eu_-logo.jpg\" alt=\"\" class=\"wp-image-2432\" srcset=\"https:\/\/www.nlr.org\/wp-content\/uploads\/2024\/02\/eu_-logo.jpg 378w, https:\/\/www.nlr.org\/wp-content\/uploads\/2024\/02\/eu_-logo-300x119.jpg 300w\" sizes=\"auto, (max-width: 378px) 100vw, 378px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-fe9cc265 wp-block-group-is-layout-flex\">\n<p>Dit project is gefinancierd door het Clean Hydrogen Partnership onder GA nr. 101101409<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Project: BRAVA (Breakthrough fuel cell technologies for aviation) Het BRAVA-project richt zich op het ontwikkelen van innovatief warmtebeheer voor fuel cell-based power generation systems (PGS) voor vliegtuigen om de massa- en vriesbeperkingen van conventionele koelsystemen te aan te pakken. Hiermee wordt een belangrijke stap gezet om vliegen op waterstof mogelijk te maken. De uitdaging Conventionele [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":15528,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"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-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":[62],"expertise":[140],"class_list":["post-15531","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geen-onderdeel-van-een-categorie-2","post_template_type-case","expertise-duurzaamheid-en-milieu"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>R&amp;D case: Baankbrekende brandstofcel&shy;technologie voor vliegtuigen - Nederlands Lucht- en Ruimtevaartcentrum<\/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.nlr.org\/nl\/newsroom\/case\/brava\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R&amp;D case: Baankbrekende brandstofcel&shy;technologie voor vliegtuigen - Nederlands Lucht- en Ruimtevaartcentrum\" \/>\n<meta property=\"og:description\" content=\"Project: BRAVA (Breakthrough fuel cell technologies for aviation) Het BRAVA-project richt zich op het ontwikkelen van innovatief warmtebeheer voor fuel cell-based power generation systems (PGS) voor vliegtuigen om de massa- en vriesbeperkingen van conventionele koelsystemen te aan te pakken. Hiermee wordt een belangrijke stap gezet om vliegen op waterstof mogelijk te maken. De uitdaging Conventionele [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.nlr.org\/nl\/newsroom\/case\/brava\/\" \/>\n<meta property=\"og:site_name\" content=\"Nederlands Lucht- en Ruimtevaartcentrum\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-24T09:19:10+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-23T07:20:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.nlr.org\/wp-content\/uploads\/2025\/06\/Airbus_2025_ZEROe-fully-electric-hydrogen-powered-four-pod-aircraft_ZeroE_Turboprop_AIB_VCITY2-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Wendy Duivestein\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Geschreven door\" \/>\n\t<meta name=\"twitter:data1\" content=\"Wendy Duivestein\" \/>\n\t<meta name=\"twitter:label2\" content=\"Geschatte leestijd\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.nlr.org\\\/nl\\\/newsroom\\\/case\\\/brava\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.nlr.org\\\/nl\\\/newsroom\\\/case\\\/brava\\\/\"},\"author\":{\"name\":\"Wendy Duivestein\",\"@id\":\"https:\\\/\\\/www.nlr.org\\\/#\\\/schema\\\/person\\\/6593a4e1ae0dd30f635b204bb3901fe0\"},\"headline\":\"R&amp;D case: Baankbrekende brandstofcel&shy;technologie voor vliegtuigen\",\"datePublished\":\"2025-06-24T09:19:10+00:00\",\"dateModified\":\"2026-02-23T07:20:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.nlr.org\\\/nl\\\/newsroom\\\/case\\\/brava\\\/\"},\"wordCount\":362,\"publisher\":{\"@id\":\"https:\\\/\\\/www.nlr.org\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.nlr.org\\\/nl\\\/newsroom\\\/case\\\/brava\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.nlr.org\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Airbus_2025_ZEROe-fully-electric-hydrogen-powered-four-pod-aircraft_ZeroE_Turboprop_AIB_VCITY2-scaled.jpg\",\"articleSection\":[\"Geen onderdeel van een categorie\"],\"inLanguage\":\"nl-NL\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.nlr.org\\\/nl\\\/newsroom\\\/case\\\/brava\\\/\",\"url\":\"https:\\\/\\\/www.nlr.org\\\/nl\\\/newsroom\\\/case\\\/brava\\\/\",\"name\":\"R&amp;D case: Baankbrekende brandstofcel&shy;technologie voor vliegtuigen - 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Hiermee wordt een belangrijke stap gezet om vliegen op waterstof mogelijk te maken. 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