Life Cycle Assessment for Energy Payback of Spherical Tokamak Reactors

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2012/07/01

タイトル(英語): Life Cycle Assessment for Energy Payback of Spherical Tokamak Reactors

著者名: Kanae Ban (Nagoya University), Kozo Yamazaki (Nagoya University), Hideki Arimoto (Nagoya University), Tetsutarou Oishi (Nagoya University), Tatsuo Shoji (Nagoya University)

著者名(英語): Kanae Ban (Nagoya University), Kozo Yamazaki (Nagoya University), Hideki Arimoto (Nagoya University), Tetsutarou Oishi (Nagoya University), Tatsuo Shoji (Nagoya University)

キーワード: energy payback ratio (EPR)，spherical tokamak，low aspect ratio tokamak reactor，tokamak reactor，aspect ratio，elongation

要約(英語): The energy payback ratio (EPR) is the index evaluating how a power plant produces the higher output energy effectively from the lower input energy. We used the system code and evaluated the EPRs of three reactor models; spherical tokamak (NC-ST), low aspect ratio tokamak reactor (LATR), and standard tokamak reactor (TR). The NC-ST and LATR systems have no center solenoid at the inboard side of plasma. In the case of NC-ST, normal conducting coils (NC) are used for toroidal field system. In LATR and TR superconducting coils (SC) are adopted. After we studied the relationship between the EPR of each fusion reactor and the aspect ratio in the range from 1.2 to 4.0, we evaluated the EPR of three typical models; ARIES-ST like, VECTOR like, and ARIES-RS like. The input parameters of aspect ratio, elongation, and normalized beta are as same as those of each original reactor. It was found that the EPR of LATR is the highest. Since LATR has no power loss due to ohmic-heating of normal conducting coils, the input energy of construction, operation and replacement is the lowest.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.132 No.7 （2012） 特集：The 16th International Workshop on Spherical Tori 2011

本誌掲載ページ: 535-539 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/132/7/132_535/_article/-char/ja/