{"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\/et\/from_rocket_fuel_to_clean_cars\/","title":{"rendered":"Raketik\u00fctusest keskkonnas\u00f5bralike autode k\u00fctuseni"},"content":{"rendered":"
\n

Vesinik, k\u00f5ige kergem gaas, on universumis k\u00f5ige levinum element. Hapniku juuresolekul on see \u00e4\u00e4rmiselt kergesti s\u00fcttiv. Euroopa Ariane 5 kanderakettides kasutatav vesinik on suurep\u00e4rane raketik\u00fctus, kuid seda on v\u00e4ga raske ladustada. Seda tuleb hoida kahekordse seinaga mahutites v\u00e4ga madalal temperatuuril ning seej\u00e4rel suunata raketimootoritesse tihedalt suletud torude kaudu.<\/p>\n<\/div>\n

Austria ettev\u00f5tte hiljutised edusammud viitavad sellele, et vesinikust v\u00f5ib saada ka tulevase maanteetranspordi eelistatud k\u00fctus, mis lahendaks puhta autode loomise probleemi. Koost\u00f6\u00f6s Saksa autotootja BMW-ga on see ettev\u00f5te kohandanud raketitehnoloogiat, et arendada v\u00e4lja vesinikuhoidlad, mis on piisavalt v\u00e4ikesed, et mahutada need sedaani pagasiruumi. Selle tulemusena s\u00fcndis 2007. aastal seeriatoodangusse j\u00f5udnud auto BMW Hydrogen 7, mis saab k\u00fctusena kasutada nii vesinikku kui ka bensiini. Sisuliselt on auto ainus heitgaas ohutu veeaur!<\/p>\n

\"Hydrogen
Vesinikauto k\u00fctusepaak<\/figcaption><\/figure>\n

\u00dcks suurimaid v\u00e4ljakutseid oli k\u00fctusepaagi projekteerimine. Vedelal kujul hoidmiseks tuleb vesinikku s\u00e4ilitada temperatuuril \u2013253 \u00b0C. Pideva jahutamise asemel hoiavad BMW Hydrogen 7 autod 114 liitrit vedelat vesinikku h\u00e4sti isoleeritud paakides. Paakide isolatsioon, mis vastab 17 m paksusele pol\u00fcst\u00fcreenkihile, suudab vesinikku k\u00fclmana hoida peaaegu kaks n\u00e4dalat.<\/p>\n

Enne kui vesinikk\u00fctusega autod muutuvad igap\u00e4evaseks, tuleb veel m\u00f5ned probleemid lahendada. \u00dcks neist on tanklate puudus. Teine probleem on vedela vesiniku kadu, kui see soojeneb ja aurustub aeglaselt gaasiks. N\u00e4iteks juhul, kui juht j\u00e4tab auto lennujaama kaheks n\u00e4dalaks, leiab ta tagasi tulles t\u00fchja k\u00fctusepaagi. Siiski on selgeid m\u00e4rke sellest, et vesinikul t\u00f6\u00f6tavad keskkonnas\u00f5bralikud autod on saastevaba autoliikluse tulevik.<\/p>","protected":false},"excerpt":{"rendered":"

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, […]<\/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\/et\/wp-json\/wp\/v2\/posts\/714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=714"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/714\/revisions"}],"predecessor-version":[{"id":4644,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/714\/revisions\/4644"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=714"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=714"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=714"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=714"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=714"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=714"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=714"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}