\u9ad8\u6e29\u30ac\u30b9\u7089\u3067\u306f950\u2103\u306e\u30d8\u30ea\u30a6\u30e0\u3092\u4f5c\u308a\u307e\u3059\u3002\u71b1\u306e\u767a\u751f\u306e\u539f\u7406\u306f\u5358\u7d14\u3067\u3001\u81e8\u754c\u72b6\u614b\u306e\u653e\u5c04\u6027\u7269\u8cea\u306e\u6838\u53cd\u5fdc\u306b\u3088\u308b\u767a\u71b1\u3067\u3059\u3002\u30a6\u30e9\u30f3235\u306a\u3069\u4e00\u90e8\u306e\u653e\u5c04\u6027\u7269\u8cea\u306f\u3001\u539f\u5b50\u6838\u5206\u88c2\u3092\u8d77\u3053\u3059\u3068\u304d\u306b\u9ad8\u901f\u306e\u4e2d\u6027\u5b50\u3092\u51fa\u3057\u307e\u3059\u3002\u9ad8\u901f\u4e2d\u6027\u5b50\u306f\u30a6\u30e9\u30f3235\u3068\u306e\u53cd\u5fdc\u6027\u304c\u4f4e\u3044\u3067\u3059\u304c\u3001\u6e1b\u901f\u6750\u3067\u901f\u5ea6\u3092\u843d\u3068\u3057\u3066\u3042\u3052\u308b\u3068\u5225\u306e\u30a6\u30e9\u30f3235\u306b\u3076\u3064\u304b\u3063\u305f\u3068\u304d\u306b\u6838\u5206\u88c2\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u9023\u9396\u53cd\u5fdc\u3067\u3059\u3002\u9023\u9396\u53cd\u5fdc\u304c\u904e\u6fc0\u306b\u8d77\u3053\u308b\u3068\u539f\u5b50\u7206\u5f3e\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u304c\u3001\u30a6\u30e9\u30f3238\u7b49\u6838\u53cd\u5fdc\u3057\u306a\u3044\u7269\u8cea\u3067\u9069\u5ea6\u306b\u8584\u3081\u305f\u6838\u71c3\u6599\u3067\u306f\u5236\u5fa1\u3055\u308c\u305f\u767a\u71b1\u304c\u3067\u304d\u307e\u3059\u3002
\n\u4e2d\u6027\u5b50\u306e\u6e1b\u901f\u3068\u906e\u853d\u304c\u5236\u5fa1\u306b\u306f\u91cd\u8981\u3067\u3001\u4e2d\u6027\u5b50\u3092\u5438\u53ce\u3059\u308b\u7269\u8cea\uff08\u30db\u30a6\u7d20\u3001\u30ab\u30c9\u30df\u30a6\u30e0\u7b49\u306e\u5316\u5408\u7269\uff09\u3067\u3067\u304d\u305f\u5236\u5fa1\u68d2\u3092\u5165\u308c\u3066\u4e2d\u6027\u5b50\u3092\u906e\u308b\u3053\u3068\u3067\u53cd\u5fdc\u3092\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u3042\u305f\u308a\u306f\u540c\u3058\u7269\u8cea\uff08\u4f8b\u3048\u3070\u6c34\uff09\u3067\u3082\u6e1b\u901f\u3068\u906e\u853d\uff08\u5438\u53ce\uff09\u306e\u4e21\u65b9\u306e\u4f5c\u7528\u304c\u3042\u308b\u306e\u3067\u8907\u96d1\u3067\u3059\u3002<\/p>\n
\u3055\u3066\u3001950\u2103\u306e\u71b1\u3092\u4f55\u306b\u4f7f\u3046\u304b\u3068\u3044\u3046\u3068\u3001\u65e5\u672c\u306f\u6c34\u3092\u5206\u89e3\u3057\u3066\u6c34\u7d20\u3092\u4f5c\u308d\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002
\n\u53cd\u5fdc\u306b\u306f\u786b\u9ec4-\u30e8\u30a6\u7d20\u30b5\u30a4\u30af\u30eb\u3092\u4f7f\u3044\u307e\u3059\u3002https:\/\/en.wikipedia.org\/wiki\/Sulfur%E2%80%93iodine_cycle
\n(1) I2+SO2+H2O \u2192\u30002HI+H2SO4 @120\u2103
\n\u53f3\u8fba\u306eHI\u3092\u84b8\u7559\u304b\u6bd4\u91cd\u306b\u3088\u308a\u5206\u96e2\u3057\u307e\u3059\u3002\u6b8b\u3063\u305f\u786b\u9178\u3092(2)\u306e\u53cd\u5fdc\u3067\u71b1\u5206\u89e3\u3057\u307e\u3059\u3002
\n(2) 2H2SO4 \u2192 2SO2+2H2O+O2\u3000@830\u2103\u3000\u3053\u308c\u306f\u3001\u5de6\u8fba\u304c2\u30e2\u30eb\u3001\u53f3\u8fba\u304c5\u30e2\u30eb\u306a\u306e\u3067\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc\u751f\u6210\u91cf\u304c\u5927\u304d\u3044\u305f\u3081\u9ad8\u6e29\u3067\u6709\u5229\u3067\u3059\u3002
\n\u4f4e\u6e29\u306b\u3059\u308b\u3068\u3001O2\u306e\u307f\u6c17\u4f53\u306b\u3067\u304d\u308b\u306e\u3067\u5206\u96e2\u3067\u304d\u307e\u3059\u3002
\n(3) 2HI \u2192 I2 + H2 @450\u2103\u3000\u3053\u308c\u306fHI\u306e\u751f\u6210\u30a8\u30f3\u30bf\u30eb\u30d4\u30fc\u304c\u5c0f\u3055\u3044\u306e\u3067\u53ef\u80fd\u306a\u306e\u3067\u3057\u3087\u3046\u3002H2\u304c\u6c17\u4f53\u3068\u3057\u3066\u5206\u96e2\u3067\u304d\u307e\u3059\u3002
\n\u3053\u306e3\u3064\u306e\u53cd\u5fdc\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068
\n(4) 2H2O \u2192 2H2 + O2
\n\u3068\u306a\u308a\u3001\u6c34\u304b\u3089\u6c34\u7d20\u304c\u3064\u304f\u308c\u307e\u3059\u3002
\n(4)\u306e\u53cd\u5fdc\u3092\u3044\u304d\u306a\u308a\u884c\u304a\u3046\u3068\u3059\u308b\u3068\u304b\u306a\u308a\u5927\u5909\u3067\u3059\u3002\u0394G=\u0394H-T\u0394S\u3067\u3001\u5ba4\u6e29\u3067\u0394H=286kJ\/mol\u3067\u3059\u3002
\nH2O\u2192H2+0.5O2\u3067\u306f\u5206\u5b50\u6570\u304c0.5 mol\u3060\u3051\u5897\u3048\u308b\u306e\u3067\u3001\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc\u304c\u4e8c\u539f\u5b50\u5206\u5b501\u30e2\u30eb\u5206\u306e5\/2R[Jmol^-1K^-1]\u3000\u00d7 0.5mol = 5\/4R = 10.4 [J\/K]\u3060\u3051\u751f\u3058\u307e\u3059\uff08\uff1d\u0394S\uff09\u3002
\nT=950\u2103\uff1d1223K \u3060\u3068T\u0394S=13 kJ\/mol\u306a\u306e\u3067\u0394G\u306f\u3042\u307e\u308a\u4e0b\u304c\u308a\u307e\u305b\u3093\u3002\u30dc\u30eb\u30c4\u30de\u30f3\u5206\u5e03\u3092\u8003\u3048\u3066\u3082\u3001exp(-\u0394G\/RT)=10^-12 (@950\u2103)\u3000\u3067\u3001\u751f\u6210\u7269\u3092\u3082\u306e\u3059\u3054\u304f\u9811\u5f35\u3063\u3066\u5206\u96e2\u3057\u306a\u3044\u3068\u53cd\u5fdc\u304c\u9032\u307f\u307e\u305b\u3093\u3002
\n\u3057\u305f\u304c\u3063\u3066\u3001\u30e8\u30a6\u7d20-\u786b\u9ec4\u30b5\u30a4\u30af\u30eb\u306f\u5b9f\u306b\u982d\u304c\u3044\u3044\u65b9\u5f0f\u3067\u3059\u304c\u30011970\u5e74\u4ee3\u306bGeneral Atomics\u793e\u3067\u958b\u767a\u3055\u308c\u305f\u305d\u3046\u3067\u3059\u3002\u3053\u306e\u4f1a\u793e\u306f\u4eca\u306f\u8ecd\u4e8b\u30c9\u30ed\u30fc\u30f3\u3082\u4f5c\u3063\u3066\u3044\u308b\u3088\u3046\u306a\u4f01\u696d\u3067\u3059\u3002
\n\u9ad8\u6e29\u3067\u306e\u6c34\u5206\u89e3\u306f\u4ed6\u306b\u3082celium oxide cycle\u3084copper chlorine cycle\u306a\u3069\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u3002\u305d\u306e\u3046\u3061\u307e\u3068\u3081\u3066\u8abf\u3079\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u82f1\u8a9e\u306f\u3001https:\/\/en.wikipedia.org\/wiki\/Control_rod \u304b\u3089\u3002
\n“Control rods are used in nuclear reactors to control the rate of fission of the nuclear fuel \u2013 uranium or plutonium.”
\ncontrol rods \u5236\u5fa1\u68d2
\nnuclear reactors \u539f\u5b50\u7089
\nrate of fission \u6838\u5206\u88c2\u306e\u901f\u5ea6
\nnuculear fuel \u6838\u71c3\u6599
\n“Breeder reactors operate with fast neutrons.” \u5897\u6b96\u7089\u306f\u9ad8\u901f\u4e2d\u6027\u5b50\u3067\u52d5\u4f5c\u3059\u308b\u3002
\n“Maintaining a constant power output requires keeping the long-term average neutron multiplication factor close to 1.”
\n\u4e00\u5b9a\u306e\u51fa\u529b\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u306f\u9577\u671f\u7684\u306a\u4e2d\u6027\u5b50\u5897\u500d\u56e0\u5b50\u3092\uff11\u306b\u8fd1\u3065\u3051\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002
\n“Typical shutdown time for modern reactors is two seconds for 90% reduction, limited by decay heat.\u201d
\n\u73fe\u4ee3\u306e\u539f\u5b50\u7089\u306e\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u306b\u8981\u3059\u308b\u6642\u9593\u306f90\uff05\u51fa\u529b\u6e1b\u5c11\u306b2\u79d2\u3067\u3042\u308b\u3002\u3053\u308c\u306f\u5d29\u58ca\u71b1\u306b\u3088\u3063\u3066\u5236\u9650\u3055\u308c\u3066\u3044\u308b\u3002
\n“Other means of controlling reactivity include (for PWR) a soluble neutron absorber (boric acid) added to the reactor coolant, allowing the complete extraction of the control rods during stationary power operation, ensuring an even power and flux distribution over the entire core. This chemical shim, along with the use of burnable neutron poisons within the fuel pellets, is used to assist regulation of the core’s long term reactivity, while the control rods are used for rapid reactor power changes (e.g. shutdown and start up). ”
\nsoluble \u6eb6\u3051\u308b
\nreactor coolant \u539f\u5b50\u7089\u51b7\u5374\u6c34
\ncomplete extraction of the control rods \u5236\u5fa1\u68d2\u3092\u5b8c\u5168\u306b\u5f15\u304d\u629c\u304f\u3053\u3068
\nstationary power operation \u5b9a\u5e38\u96fb\u529b\u3067\u306e\u904b\u8ee2
\nan even power and flux distribution over the entire core\u3000\u7089\u5fc3\u5168\u4f53\u3067\u306e\u30d1\u30ef\u30fc\u3068\u4e2d\u6027\u5b50\u675f\u306e\u5747\u7b49\u306a\u5206\u5e03
\n“In most reactor designs, as a safety measure, control rods are attached to the lifting machinery by electromagnets, rather than direct mechanical linkage. This means that in the event of power failure, the control rods fall automatically, under gravity, all the way into the pile to stop the reaction.”
\n\u5b89\u5168\u5bfe\u7b56\u3068\u3057\u3066\u307b\u3068\u3093\u3069\u306e\u539f\u5b50\u7089\u3067\u5236\u5fa1\u68d2\u306f\u6a5f\u68b0\u5f0f\u9023\u7d50\u3067\u306f\u306a\u304f\u96fb\u78c1\u77f3\u3067\u91e3\u308a\u3042\u3052\u3089\u308c\u3066\u3044\u3066\u3001\u96fb\u6e90\u55aa\u5931\u6642\u306b\u306f\u91cd\u529b\u3067\u4e00\u756a\u4e0b\u307e\u3067\u843d\u3061\u3066\u6838\u53cd\u5fdc\u3092\u505c\u6b62\u3055\u305b\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u3002 <\/p>\n","protected":false},"excerpt":{"rendered":"
\u9ad8\u6e29\u30ac\u30b9\u7089\u3067\u306f950\u2103\u306e\u30d8\u30ea\u30a6\u30e0\u3092\u4f5c\u308a\u307e\u3059\u3002\u71b1\u306e\u767a\u751f\u306e\u539f\u7406\u306f\u5358\u7d14\u3067\u3001\u81e8\u754c\u72b6\u614b\u306e\u653e\u5c04\u6027\u7269\u8cea\u306e\u6838\u53cd\u5fdc\u306b\u3088\u308b\u767a\u71b1\u3067\u3059\u3002\u30a6\u30e9\u30f3235\u306a\u3069\u4e00\u90e8\u306e\u653e\u5c04\u6027\u7269\u8cea\u306f\u3001\u539f\u5b50\u6838\u5206\u88c2\u3092\u8d77\u3053\u3059\u3068\u304d\u306b\u9ad8\u901f\u306e\u4e2d\u6027\u5b50\u3092\u51fa\u3057\u307e\u3059\u3002\u9ad8\u901f\u4e2d\u6027\u5b50\u306f\u30a6\u30e9\u30f3235\u3068\u306e\u53cd\u5fdc\u6027\u304c\u4f4e\u3044\u3067\u3059\u304c\u3001\u6e1b\u901f\u6750\u3067\u901f\u5ea6\u3092\u843d\u3068\u3057\u3066\u3042\u3052\u308b\u3068\u5225\u306e\u30a6\u30e9\u30f3235\u306b\u3076\u3064\u304b\u3063\u305f\u3068\u304d\u306b\u6838\u5206\u88c2\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u9023\u9396\u53cd\u5fdc\u3067\u3059\u3002\u9023\u9396\u53cd\u5fdc\u304c\u904e\u6fc0\u306b\u8d77\u3053\u308b\u3068\u539f\u5b50\u7206\u5f3e\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u304c\u3001\u30a6\u30e9\u30f3238\u7b49\u6838\u53cd\u5fdc\u3057\u306a\u3044\u7269\u8cea\u3067\u9069\u5ea6\u306b\u8584\u3081\u305f\u6838\u71c3\u6599\u3067\u306f\u5236\u5fa1\u3055\u308c\u305f\u767a\u71b1\u304c\u3067\u304d\u307e\u3059\u3002 \u4e2d\u6027\u5b50\u306e\u6e1b\u901f\u3068\u906e\u853d\u304c\u5236\u5fa1\u306b\u306f\u91cd\u8981\u3067\u3001\u4e2d\u6027\u5b50\u3092\u5438\u53ce\u3059\u308b\u7269\u8cea\uff08\u30db\u30a6\u7d20\u3001\u30ab\u30c9\u30df\u30a6\u30e0\u7b49\u306e\u5316\u5408\u7269\uff09\u3067\u3067\u304d\u305f\u5236\u5fa1\u68d2\u3092\u5165\u308c\u3066\u4e2d…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[42,44],"tags":[5,7],"class_list":["post-1936","post","type-post","status-publish","format-standard","hentry","category-tech","category-materials","tag-tech","tag-materials"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/posts\/1936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1936"}],"version-history":[{"count":0,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/posts\/1936\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}