論文

2017年1月

海水ウランを用いた高温ガス炉による持続的で安全なエネルギー供給とその経済性

Annals of Nuclear Energy
  • 深谷 裕司
  • ,
  • 後藤 実

99
開始ページ
19
終了ページ
27
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.anucene.2016.09.029
出版者・発行元
Elsevier

Sustainable and safe energy supply with seawater fueled HTGR have been investigated to sustain the nuclear energy safely by electricity generation with HTGR, the uranium resources must be inexhaustible. The seawater uranium is expected to be alternative resources to conventional resources. It is said that 4.5 billion tons of uranium is dissolved in the seawater, which corresponds to a consumption of approximately 72 thousand years. The uranium dissolved in seawater is in an equilibrium state with the uranium on surface of sea floor, which is approximately a thousand times of the amount, that is 72 million years. It can be recoverable. In other words, the uranium from seawater is almost inexhaustible natural resource. The cost of extracting uranium from seawater with current technology is still expensive compared with that of conventional uranium. However, the economy of nuclear power generation fueled by seawater uranium should be assessed for entire electricity generation cost. In the present study, the economy of electricity generation using uranium from seawater is assessed using a commercial HTGR. Compared with ordinary LWR using conventional uranium, HTGR can realize lower cost of electricity owing to small volume of simple direct gas turbine system compared with water and steam systems of LWR, rationalization by modularizing, and high thermal efficiency, even if fueled by seawater uranium. It is concluded that the HTGR fueled by seawater uranium with the current technology enables the energy sustainability to be maintained for a long term approximately 70 million years with superior inherent safety features and low cost of 7.28 yen/kWh, which is lower than the 8.80 yen/kWh cost of LWR using conventional uranium.著者所属: 日本原子力研究開発機構(JAEA)

リンク情報
DOI
https://doi.org/10.1016/j.anucene.2016.09.029
CiNii Articles
http://ci.nii.ac.jp/naid/120006502091
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000388053100003&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.anucene.2016.09.029
  • ISSN : 0306-4549
  • CiNii Articles ID : 120006502091
  • identifiers.cinii_nr_id : 9000308375380
  • SCOPUS ID : 84989817497
  • Web of Science ID : WOS:000388053100003

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