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Ohashi, Hirofumi; Inaba, Yoshitomo; Nishihara, Tetsuo; Takeda, Tetsuaki; Hayashi, Koji; Inagaki, Yoshiyuki
Nuclear Production of Hydrogen, p.177 - 185, 2006/00
Japan Atomic Energy Agency (JAEA) has been promoting R&D on the hydrogen production technology with a High Temperature Gas-cooled Reactor (HTGR). Research on the system integration technology has been carried out about four items, that is, (a) control technology to keep reactor operation against thermal disturbance caused by the hydrogen production system, (b) estimation of tritium permeation from reactor to hydrogen, (c) countermeasure against explosion and (d) development of high temperature valve to isolate reactor and hydrogen production systems in accidents. This report describes current status of research activities on the system integration technology at JAEA.
Shiozawa, Shusaku; Komori, Yoshihiro; Ogawa, Masuro
Nihon Genshiryoku Gakkai-Shi, 47(5), p.342 - 349, 2005/05
For the purpose to extend high temperature nuclear heat application, JAERI constructed the HTTR, High Temperature Engineering Test Reactor, and has carried out research and development of high temperature gas cooled reactor system aiming at high efficiency power generation and hydrogen production. This paper explains the history, main results, present status of research and development of HTTR project, international cooperation of research and development of HTGR and future plan aiming at development of Japanese original future HTGR-Hydrogen production system. This paper includes results from the study, which is entrusted from Ministry of Education, Culture, Sports, Science and Technology of Japan.
Ogawa, Masuro; Nishihara, Tetsuo
Nuclear Engineering and Design, 233(1-3), p.5 - 10, 2004/10
Times Cited Count：28 Percentile：82.72(Nuclear Science & Technology)An amount of primary energy supply in Japan is increasing year by year. Much energy such as oil, coal and natural gas is imported so that the self-sufficiency ratio in Japan is only 20 % even if including nuclear energy. An amount of energy consumption is also increasing especially in commercial and resident sector and transport sector. As a result, a large amount of greenhouse gas was emitted into the environment. Nuclear energy plays the important role in energy supply in Japan. Japan Atomic Energy Research Institute (JAERI) has been carried out research and development of a hydrogen production system using a high temperature gas cooled reactor (HTGR). The HTTR project aims at the establishment of the HTGR hydrogen production system. Reactor technology of the HTGR, hydrogen production technology with thermochemical water splitting process and system integration technology between the HTGR and a hydrogen production plant are developed in the HTTR project.
Inagaki, Yoshiyuki; Nishihara, Tetsuo; Takeda, Tetsuaki; Hayashi, Koji; Inaba, Yoshitomo; Ohashi, Hirofumi
Proceedings of International Conference on Global Environment and Advanced Nuclear Power Plants (GENES4/ANP 2003) (CD-ROM), p.1062_1 - 1062_6, 2003/09
JAERI has been promoting R&D on the HTTR Hydrogen Production System (HTTR-H2) with a view to establishing and demonstrating the technology to couple a hydrogen production system with a High Temperature Gas-cooled Reactor. The coupling technology consists of control and safety-related ones. The control technology aims at preventing thermal mismatch between reactor and hydrogen production systems. A simulation test with a mockup model of the HTTR-H2 has been carried out to develop this technology. The safety-related technology includes countermeasures against explosion of combustible gas and tritium permeation from helium gas to process gas, and assurance of pressure boundary between the primary and secondary helium gases and that between the secondary and process gases. As for this technology, design study and components tests are underway.
Nishihara, Tetsuo; Inagaki, Yoshiyuki
Proceedings of GLOBAL2003 Atoms for Prosperity; Updating Eisenhower's Global Vision for Nuclear Energy (CD-ROM), p.320 - 324, 2003/00
HTGR hydrogen production system has potential possibility to provide hydrogen without CO
emission. Key technology for developing this system is to establish the control technology for preventing propagation of thermal turbulence from the hydrogen production system to the HTGR. Japan Atomic Energy Research Institute (JAERI) has planed a demonstration test of hydrogen production using an HTGR named high temperature engineering test reactor (HTTR) to develop the control technology. Thermal load absorber concept using the steam generator located downstream of the chemical reactor is proposed to mitigate the variation of outlet helium temperature of the chemical reactor. This concept leads to the stable controllability and enables to operate the HTGR and the hydrogen production plant independently. Plant simulation analyses are carried out to verify the performance of this concept.
16, 1996, Oarai, JapanJAERI-Conf 96-010, 533 Pages, 1996/07
no abstracts in English
Saito, Shinzo; Tanaka, Toshiyuki; Sudo, Yukio; Baba, Osamu; ; Hishida, Makoto; ; ; Shinohara, Yoshikuni; ; et al.
Nihon Genshiryoku Gakkai-Shi, 32(9), p.847 - 871, 1990/09
no abstracts in English
; ;
Nihon Genshiryoku Gakkai-Shi, 25(12), p.971 - 978, 1983/00
Times Cited Count：1 Percentile：22.14(Nuclear Science & Technology)no abstracts in English
Nishihara, Tetsuo
no journal, ,
The purpose of high-temperature gas cooled reactor (HTGR) development, present status of research and development on HTGR and hydrogen production technology implemented by JAEA and international cooperation are introduced.
Tachibana, Yukio
no journal, ,
no abstracts in English
Kamide, Hideki
no journal, ,
Current status of developments about sodium cooled fast reactor, high temperature gas cooled reactor, and related innovative technology is reported in a Plenary panel of the meeting.
