{"id":714,"date":"2012-11-07T10:12:00","date_gmt":"2012-11-07T09:12:00","guid":{"rendered":"https:\/\/kids.esa.int\/from_rocket_fuel_to_clean_cars\/"},"modified":"2026-10-08T00:31:27","modified_gmt":"2026-10-07T22:31:27","slug":"from_rocket_fuel_to_clean_cars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/from_rocket_fuel_to_clean_cars\/","title":{"rendered":"Fra rakettdrivstoff til milj\u00f8vennlige biler"},"content":{"rendered":"<div class=\"lede\">\n<p>Hydrogen, den letteste av alle gassene, er det vanligste grunnstoffet i universet. Det er ekstremt lettantennelig i n\u00e6rv\u00e6r av oksygen. Hydrogen, som brukes i Europas Ariane 5-raketter, er et utmerket rakettdrivstoff, men det er sv\u00e6rt vanskelig \u00e5 lagre. Det m\u00e5 oppbevares i dobbeltveggede tanker ved sv\u00e6rt lave temperaturer og deretter f\u00f8res til rakettmotorene gjennom tett forseglede r\u00f8r.<\/p>\n<\/div>\n<p>Nylige fremskritt fra et \u00f8sterriksk selskap tyder p\u00e5 at hydrogen ogs\u00e5 kan bli det foretrukne drivstoffet for fremtidens veitransport, og dermed l\u00f8se problemet med \u00e5 utvikle milj\u00f8vennlige biler. I samarbeid med den tyske bilprodusenten BMW har dette selskapet tilpasset rakettteknologi for \u00e5 utvikle hydrogenbeholdere som er sm\u00e5 nok til \u00e5 f\u00e5 plass i bagasjerommet p\u00e5 en sedan. I 2007 f\u00f8rte dette til lanseringen av en serieprodusert bil, BMW Hydrogen 7, som kan bruke enten hydrogen eller bensin som drivstoff. I praksis er den eneste utslippsgassen fra bilen ufarlig vanndamp!<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"Magna Steyr Aerospace\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/10\/Hydrogen_car_fuel_tank2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2012\/10\/hydrogen_car_fuel_tank2\/18250360-2-eng-GB\/Hydrogen_car_fuel_tank.jpg\" alt=\"Hydrogen car fuel tank\"><figcaption>Drivstofftank til hydrogenbil<\/figcaption><\/figure>\n<p>En av de st\u00f8rste utfordringene var \u00e5 utforme drivstofftanken. For \u00e5 kunne lagres i flytende form m\u00e5 hydrogen holdes ved \u2013253 \u00baC. I stedet for \u00e5 bruke kontinuerlig kj\u00f8ling lagrer BMW Hydrogen 7-bilene 114 liter flytende hydrogen i sv\u00e6rt godt isolerte tanker. Tankenes isolasjon, som tilsvarer et 17 m tykt lag med isopor, kan holde hydrogenet kaldt i nesten to uker.<\/p>\n<p>Det er fortsatt noen utfordringer som m\u00e5 l\u00f8ses f\u00f8r hydrogenbiler blir vanlige. En av dem er mangelen p\u00e5 fyllestasjoner. Et annet er tapet av flytende hydrogen n\u00e5r det varmes opp og sakte fordamper til gass. En sj\u00e5f\u00f8r som for eksempel lar bilen st\u00e5 p\u00e5 flyplassen i to uker, vil komme tilbake til en tom drivstofftank. Det er imidlertid klare tegn p\u00e5 at rene biler som kj\u00f8rer p\u00e5 hydrogen, er fremtiden for forurensningsfri bilkj\u00f8ring.<\/p>","protected":false},"excerpt":{"rendered":"<p>Hydrogen, the lightest of all gases, is the most common element in the Universe. It is extremely easy to burn, if oxygen is present. Used in Europe\u2019s Ariane 5 launchers, [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2012\/10\/liquid_hydrogen-powered_combustion_engine2\/17879995-2-eng-GB\/Liquid_hydrogen-powered_combustion_engine.jpg","esa_banner_description":"Liquid hydrogen-powered combustion engine","esa_banner_credit":"BMW\/Magna Steyr Aerospace","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/10\/Liquid_hydrogen-powered_combustion_engine2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,54,40],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-714","post","type-post","status-publish","format-standard","hentry","category-learn","category-space-technologies-on-earth","category-technology"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=714"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/714\/revisions"}],"predecessor-version":[{"id":4644,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/714\/revisions\/4644"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=714"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=714"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=714"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=714"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=714"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=714"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=714"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}