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Tachibana, Yukio; Iyoku, Tatsuo; Sato, Hiroyuki; Kunitomi, Kazuhiko; Ogawa, Masuro
Proceedings of International Scientific-Practical Conference Nuclear Power Engineering in Kazakhstan, 10 Pages, 2008/06
JAEA (Japan Atomic energy Agency) has been designing a Small-sized Co-generation High Temperature Gas-cooled Reactor (HTGR), named High Temperature Reactor 50-Cogeneration (HTR50C), on the basis of design, construction and operational experience of the Japan's first HTGR, HTTR. The HTR50C that can be used not only for electric power generation but also for hydrogen production and district heating is considered one of the most promising nuclear reactors for countries where sufficient infrastructure such as power grids is not provided. Specification, equipment configuration, etc. of the HTR50C were determined, and also economic assessment was made.
Izumo, Hironobu; Hori, Naohiko; Nagao, Yoshiharu; Niimi, Motoji; Kawamura, Hiroshi
no journal, ,
no abstracts in English
Terada, Atsuhiko; Kubo, Shinji; Sakaba, Nariaki; Onuki, Kaoru
no journal, ,
The IS process is a thermo-chemical water splitting process for hydrogen production. JAEA completed one-week continuous hydrogen production using a glass-made bench-scale test apparatus equipped with an automatic control system in 2004, where the hydrogen production rate was about 30NL/hr. Based on the successful test, present activity focuses on the development of components to be used in the corrosive process environments and technologies to realize high thermal efficiency of hydrogen production. This paper describes present status of the former activity such as a conceptual design of a test plant driven by sensible heat of helium gas heated by an electric heater simulating the HTTR, and a test of components for service in corrosive environments of high temperature sulfuric acid. Also, R&D results are described on glass lining technologies and a reliability evaluation of components made of SiC ceramics such as the sulfuric acid decomposer and the SO
decomposer.