ピンボール 木の豆ミックス2

Journal of the Hydrogen Energy Systems Society of Japan
Online ISSN : 2436-5599
Print ISSN : 1341-6995
Volume 32, Issue 3
Displaying 1-11 of 11 articles from this issue
  • [in Japanese]
    2007 Volume 32 Issue 3 Pages 1-2
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • Kan Kosaka, Akira Ishito, Abuliti Abudula
    2007 Volume 32 Issue 3 Pages 3-7
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS

    In addition to the Biomass energy, wind power, fuel cells, and other renewable energy research and policy planning in Aomori Prefecture, Hachinohe city of Aomori conducts the world’s first verification experiment of Microgrid using 100% renewable energy. While Thermonuclear Experimental Reactor (ITER) and related areas are still under researching, Aomori Prefecture takes the lead role in the field of a new hybrid-energy industry. This paper presents a summary of relevant hydrogen energy in Aomori Prefecture.

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  • Kenichi ITOH
    2007 Volume 32 Issue 3 Pages 8-11
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    The Shizuoka prefectural government established a study group of “Oigawa Eco Valley Hydrogen Project” with the object of producing hydrogen from wood biomass and using it. We aim to realize producing “renewable energy” locally and using it within the local. In this paper, we introduce our initiatives of renewable energy and project of hydrogen.

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  • Industrial Accumulation Division, Department of Agriculture Fisheries ...
    2007 Volume 32 Issue 3 Pages 12-14
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    In Mie Prefecture, we are applying the industrial qualities of technology, know-how, talented personnel and infrastructure we have cultivated in our prefecture until now, to fuel cell and hydrogen-related technology, which has environmentally excellent characteristics.

    We would now like to introduce our efforts to create a strong research - development base and the concentration of related industries through promoting the support of verification experiments, dissemination of information, and increased awareness outside Mie Prefecture.

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  • Environmental Policy Division・New Industry Promotion Division・Industri ...
    2007 Volume 32 Issue 3 Pages 15-19
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    Yamaguchi Prefecture, which has the highest potential of Hydrogen supply in Japan, has developed an atmosphere for the creation of a “Hydrogen Energy Society” on the basis of “Hydrogen Frontier Yamaguchi Promotion Plan” established in 2004. Specifically, we have promoted the model project which will enable to supply by-product hydrogen produced at the soda factory directly to the household hydrogen fuel cell through the pipeline.

    In addition, we have supported the industrialization of hydrogen related technology, such as encouraging the companies to the hydrogen business through developing leading technology like “hydrogen storage tank” by industry-academia-government collaboration. Moreover, regarding another project, research and development on the world’s first hydrogen engine ship have been advanced in the Shimonoseki area.

    The remarkable feature of Yamaguchi Prefecture is that the Environment Section and the Commerce & Industry section work together on diffusion, enlightenment, and support of developing technologies and industrialization toward a “Hydrogen Energy Society”. We will strengthen our efforts in order to take the leadership in the creation of a “Hydrogen Energy Society”.

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  • Shouji FUJIMOTO
    2007 Volume 32 Issue 3 Pages 20-23
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    With the aim of realizing an eco-friendly hydrogen energy society, the Fukuoka Strategy Conference for Hydrogen Energy was organized through the cooperation of industry, academia and government. This pioneering conference intends to establish the world’s leading research base for hydrogen technologies in Fukuoka by conducting integrated research and demonstration activities ranging from production to storage, transport and use of hydrogen, and by developing related human resources at what would be Japan’s sole training center for hydrogen experts.

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  • Masaya NAKAHARA, Moriaki KUMAGAI, Tepei YASUKAWA, Hiroyuki KIDO
    2007 Volume 32 Issue 3 Pages 24-31
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    One of the dangers latent in the hydrogen society is that hydrogen has much larger possible for the deflagration to detonation transitions (DDT) than ordinary hydrocarbon fuels, because of its higher laminar burning velocity and wider detonability limits. DDT may easier occur in a long and narrow space such as tunnels and ducts. It is important to be developed for predicting and preventing serious fire or explosion, and detonation. The present study is performed to investigate experimentally the deflagration flame of hydrogen mixtures propagating in a tunnel simulated channel (10x10x2440 mm) with special attention to flame front configurations and speeds, because of DDT caused mostly by enhancement of the flame front propagation. Hydrogen-air mixtures with 0.3~0.4 of equivalence ratio and hydrogen mixtures having nearly the same laminar burning velocity SLO with ɸ=0.4~0.7 are prepared, in order to examine effects of the laminar burning velocity and the equivalence ratio on enhancement of the flame speeds. The flame shape and speeds are obtained by using sequential schlieren images recorded under conditions with the center ignition and the both-ends open of channel. The results show that the flame propagation is oscillating due to acoustic instability. Some flames also shows to begin to accelerate after traveling a distance, so that the factors of flame acceleration are discussed.

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  • Kouji SAKAKI, Hirotoshi ENOKI, Kunihiko DAIDO, Masahiko SOGAO, Etsuo A ...
    2007 Volume 32 Issue 3 Pages 32-37
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    It is important to develop and evaluate novel hydrogen storage materials which can work under the pressure range from 1 to 35 MPa of hydrogen at ambient temperature. However, there are, unfortunately, few equipments to evaluate of hydrogen storage properties up to 40 MPa because of no suitable valves which can work for the PC equipment up to 40 MPa without any leakages. Therefore, we developed suitable valves for that type of PC equipment. Those have been able to work without any leakages under our actual experimental conditions at least for 8 months or during 51,207 times of opening and closing motion. Even after 51,207 times of opening and closing motion, the significant abrasion or damage of the sealing parts of the valve have not been observed by the dissection experiments. In addition, the accuracy of our equipment was ±0.03 mass % which is almost same as the conventional ones in the pressure range up to 5 MPa.

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  • Hideo KAWABATA
    2007 Volume 32 Issue 3 Pages 38-44
    Published: 2007
    Released on J-STAGE: July 21, 2022
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    As the countermeasures against global warming and energy security, numerous actions for introducing biofuels are being taken in various countries in the world. Among biofuels, bioethanol as a gasoline substitution is now attracting lots of attentions, and has been already introduced on a large scale in U.S.A. and Brazil. However, problems like a linkage of the price of farm products such as corn and sugar with oil prices have become apparent. Ethanol production technology from cellulose is drawing attentions as a method which do not compete with food, and it is expected to be the key for future resource acquisition and stable energy supply.

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  • 2007 Volume 32 Issue 3 Pages 45-47
    Published: 2007
    Released on J-STAGE: July 21, 2022
    DOI
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  • 2007 Volume 32 Issue 3 Pages 48-54
    Published: 2007
    Released on J-STAGE: July 21, 2022
    DOI
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