R&D status of heat utilization technologies for high-temperature gas-cooled reactor and solar energy

Myagmarjav, O.  ; 岩月 仁 ; 田中 伸幸 ; 野口 弘喜  ; 上地 優; 井岡 郁夫  ; 野村 幹弘*; 八巻 徹也*; 都留 稔了*; 町田 正人*; 石原 達己*; 阿部川 弘明*; 細野 恭生*; 猪俣 誠*; 宮嶋 圭太*; 久保 真治  ; 稲垣 嘉之; 坂場 成昭 

Myagmarjav, O.; Iwatsuki, Jin; Tanaka, Nobuyuki; Noguchi, Hiroki; Kamiji, Yu; Ioka, Ikuo; Nomura, Mikihiro*; Yamaki, Tetsuya*; Tsuru, Toshinori*; Machida, Masato*; Ishihara, Tatsumi*; Abekawa, Hiroaki*; Hosono, Yasuo*; Inomata, Makoto*; Miyajima, Keita*; Kubo, Shinji; Inagaki, Yoshiyuki; Sakaba, Nariaki

The thermochemical water splitting iodine-sulfur (IS) process has potential for producing a large amount of hydrogen without restriction of resources and CO emission in the upcoming hydrogen society. The IS process harnesses heat energy in ranges of temperature, which is generated by High Temperature Gas-cooled Reactors (HTGRs) or solar energy. For application of solar energy, innovative membrane techniques are required to recover total thermal efficiency because temperature (ca. 600C) of heat derived from the solar energy is lower than that of HTGRs (ca. 900C). This paper summarizes current R&D of key devices of membranes and catalysts, and of process evaluation.