{"id":4126,"date":"2022-09-16T12:07:00","date_gmt":"2022-09-16T12:07:00","guid":{"rendered":"https:\/\/peacock.nu\/okategoriserad\/miten-ydinvoimalaitos-toimii\/"},"modified":"2023-01-24T13:11:12","modified_gmt":"2023-01-24T13:11:12","slug":"miten-ydinvoimalaitos-toimii","status":"publish","type":"post","link":"https:\/\/peacock.nu\/fi\/blogi\/miten-ydinvoimalaitos-toimii\/","title":{"rendered":"Miten ydinvoimalaitos toimii?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Keskustelu ydinvoiman olemassaolosta tai olemattomuudesta ei tunnu loppuvan koskaan. Ruotsissa \u00e4\u00e4nestettiin asiasta jo vuonna 1980. T\u00e4m\u00e4n seurauksena parlamentti p\u00e4\u00e4tti, ett\u00e4 kaikki reaktorit olisi poistettava k\u00e4yt\u00f6st\u00e4 vuoteen 2010 menness\u00e4.<\/p>\n\n<p class=\"wp-block-paragraph\">N\u00e4in ei ole k\u00e4ynyt &#8211; nyky\u00e4\u00e4n on kuusi aktiivista reaktoria Forsmarkissa, Oskarshamnissa ja Ringhalsissa. Niit\u00e4 on kahta eri tyyppi\u00e4: painevesireaktoreita ja kiehutusvesireaktoreita. Molemmat toimivat samalla perusperiaatteella &#8211; vesi kuumennetaan, jolloin turbiini ja generaattori tuottavat s\u00e4hk\u00f6\u00e4.<\/p>\n\n<h2 class=\"wp-block-heading\">Yksinkertainen selitys ydinvoimalan toiminnasta<\/h2>\n\n<p class=\"wp-block-paragraph\">Mutta takaisin p\u00e4iv\u00e4n kysymykseen: &#8221;Miten ydinvoimala toimii?&#8221;. Tietenkin taustalla on monimutkainen fysiikka, jos menemme yksityiskohtiin. Mutta maallikolle on my\u00f6s mahdollista kuvata se lyhyesti, p\u00e4\u00e4piirteitt\u00e4in tai askel askeleelta, jos haluat:<\/p>\n\n<ol class=\"wp-block-list\"><li>Rikastettu uraani s\u00e4teilytet\u00e4\u00e4n neutroneilla.<\/li><li>Uraanin atomit jakautuvat kahtia s\u00e4teilytyksen vaikutuksesta.<\/li><li>Fissio synnytt\u00e4\u00e4 uusia neutroneita, jotka puolestaan fissioivat muita uraaniatomeja &#8211; ketjureaktio.<\/li><li>Jotta ketjureaktio ei p\u00e4\u00e4sisi r\u00e4j\u00e4ht\u00e4m\u00e4\u00e4n hallitsemattomasti, sit\u00e4 hallitaan reaktorisyd\u00e4meen laskettavilla s\u00e4\u00e4t\u00f6sauvoilla. Ne koostuvat aineista, jotka vangitsevat suuria m\u00e4\u00e4ri\u00e4 neutroneita. T\u00e4m\u00e4 pit\u00e4\u00e4 ydinreaktion hallinnassa.<\/li><li>Uraaniatomien halkeaminen vapauttaa suuria m\u00e4\u00e4ri\u00e4 l\u00e4mp\u00f6\u00e4. Sit\u00e4 k\u00e4ytet\u00e4\u00e4n veden l\u00e4mmitt\u00e4miseen h\u00f6yryn tuottamiseksi.<\/li><li>Kuuma h\u00f6yry puolestaan py\u00f6ritt\u00e4\u00e4 generaattorilla varustettua turbiinia.<\/li><li>Ydinvoimalan generaattori tuottaa lopulta haluamasi s\u00e4hk\u00f6n. Generaattori muuntaa turbiinin py\u00f6riv\u00e4t lavat s\u00e4hk\u00f6ksi k\u00e4\u00e4mien sis\u00e4ll\u00e4 py\u00f6rivien magneettien avulla. 3 000 kierrosta minuutissa py\u00f6riv\u00e4 py\u00f6rimisnopeus tuottaa 50 Hz:n taajuuden, joka on Euroopan s\u00e4hk\u00f6verkoissa k\u00e4ytetty taajuus.<\/li><\/ol>","protected":false},"excerpt":{"rendered":"<p>Keskustelu ydinvoiman olemassaolosta tai olemattomuudesta ei tunnu loppuvan koskaan. Ruotsissa \u00e4\u00e4nestettiin asiasta jo vuonna 1980. T\u00e4m\u00e4n seurauksena parlamentti p\u00e4\u00e4tti, ett\u00e4 kaikki reaktorit olisi poistettava k\u00e4yt\u00f6st\u00e4 vuoteen 2010 menness\u00e4. N\u00e4in ei&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1473,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-4126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Miten ydinvoimalaitos toimii? - Peacock<\/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:\/\/peacock.nu\/fi\/blogi\/miten-ydinvoimalaitos-toimii\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Miten ydinvoimalaitos toimii? - Peacock\" \/>\n<meta property=\"og:description\" content=\"Keskustelu ydinvoiman olemassaolosta tai olemattomuudesta ei tunnu loppuvan koskaan. Ruotsissa \u00e4\u00e4nestettiin asiasta jo vuonna 1980. T\u00e4m\u00e4n seurauksena parlamentti p\u00e4\u00e4tti, ett\u00e4 kaikki reaktorit olisi poistettava k\u00e4yt\u00f6st\u00e4 vuoteen 2010 menness\u00e4. 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