Search Results 1-20 of 815

  • A THEORETICAL MODEL FOR FISSION GAS RELEASE FROM UCO TRISO FUEL

    Richards Matt

    … This paper describes a theoretical model for fission-gas release from TRISO-coated particle fuel with UCO kernels. … The model is derived from an overall mass balance for gaseous fission products, and includes components for low-temperature release, hightemperature release, and transport through fuel compact and/or graphite structures to a reactor coolant or capsule sweep gas. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1330, 2019

    J-STAGE 

  • EVALUATION OF SOURCE TERMS OF FISSION PRODUCTS IN GASEOUS EFFLUENTS AND RECOMMENDATIONS FOR EFFLUENT MONITORING OF NUCLEAR POWER PLANTS

    Zhu Zhaowen , Jiang Jing , Fang Lan , Xu Chunyan , Liu Xinhua , Xie Feng , Lou Mengqi

    … The source terms of fission products in the airborne effluents of the CPR1000 and HPR1000 (Hualong One) nuclear power plants (NPPs) in China were estimated for cycles without fuel failure. … The results indicated that the activity concentrations of fission product nuclides in the gaseous effluents were two orders of magnitude lower than the detection limit of laboratory instruments. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1196, 2019

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  • Fuel regression behavior of swirling-injection end-burning hybrid rocket engine

    SAKURAI Takashi , OISHIGE Yuya , SAITO Kazuyuki

    … <p>Burning experiments were conducted to better understand the fuel regression behavior in a swirling-injection end-burning hybrid rocket engine using paraffin wax/gaseous oxygen propellant. … The fuel grain with a diameter of 90 mm also resulted in unstable combustion caused by the initial shallow crack of the cast grain. …

    Journal of Fluid Science and Technology 14(3), JFST0025-JFST0025, 2019

    J-STAGE 

  • O-17 Biomass Gasification in Oxygen-enriched Air with Packed Bed Gasifier  [in Japanese]

    ODA Masaya , Shirato Daisuke , YOSHIIE Ryo , NARUSE Ichiro , UEKI Yasuaki

    … <p>In recent years, biomass gasification processes are attracting attention to produce renewable gaseous fuels. … It is considered that partial combustion of the fuel can be promoted and sufficient heat can be obtained. …

    Proceedings of the Conference on Biomass Science 15(0), 31-32, 2019

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  • 5-2-5 Investigation of High Load Operation Range Expansion in a Supercharged HCCI Engine  [in Japanese]

    OTOKOZAWA Teruhiko , OGAWA Ryoji , AOKI Daiki , WATANABE Kaoru , IIJIMA Akira

    … In this study, a gaseous fuel blend was used with the aim of expanding the high load operating region. … The results revealed that the region of high load operation can be suitably combining a high boost level, high exhaust gas recirculation, low compression ratio and a change in the fuel blending ratio.</p> …

    Proceedings of the Annual Conference of The Japan Institute of Energy 28(0), 176-177, 2019

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  • Study on Measurement, Multiphase Chemistry and Effect on Human Health of Gaseous Nitrous Acid  [in Japanese]

    Takenaka Norimichi

    <p>大気環境学会賞ではこれまでに行ってきた研究である、大気汚染物質の新規な測定法の開発や測定、大気中で起こっているであろう反応の研究、さらに水滴の凍結や乾燥過程での反応、亜硝酸の人体影響、バイオディーゼル燃料の製造と燃焼排ガスの測定や大気環境への影響など、大気環境にかかわる多岐に渡る研究が対象であった。これらをすべてを紹介するのは紙面の関係で無理であるので、ここでは、受賞の元となった …

    Journal of Japan Society for Atmospheric Environment / Taiki Kankyo Gakkaishi 54(1), 1-8, 2019

    J-STAGE  Ichushi Web 

  • P-46 A process design, performance and environmental impact analyses of the gasification combined SOFC system due to bio-syngas including H<sub>2</sub>S  [in Japanese]

    SUGIHARA Hiromu , SEO Yuna , DOWAKI Kiyoshi , KAMEYAMA Mitsuo

    … <p>Recently, fuel cell power system is attractive in terms of global warming protection. … For instance, the combined gasification Solid Oxide Fuel Cell (SOFC) would be expected. … Because the various gaseous concentrations of H<sub>2</sub>, CO and CH<sub>4</sub> …

    Proceedings of the Conference on Biomass Science 14(0), 139-140, 2019

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  • A theoretical study on throttle ranges of O/F controllable hybrid rocket propulsion systems

    Ozawa Kohei , Shimada Toru

    … The characteristics of several O/F control methods for hybrid rocket propulsion have been discussed and theoretically analyzed from the physical properties of propellants and fuel regression behavior. …

    Journal of Fluid Science and Technology 13(4), JFST0031, 2018-11-09

    IR 

  • Development of Correlation of Gaseous Ruthenium Transfer Rate to Condensed Water in Accident of Evaporation to Dryness by Boiling of Reprocessed High Level Liquid Waste in Fuel Reprocessing Facilities  [in Japanese]

    吉田 一雄 , 玉置 等史 , 吉田 尚生 , 天野 祐希 , 阿部 仁

    JAEA-research 2017(15), 巻頭1-2,1-18, 2018-01

  • SYNTHESIS GAS PRODUCTION FROM VARIOUS TYPES OF BIOMASS

    Faleeva Yulia , Zaichenko Victor

    … The paper considers the technology of raw material heat treatment, which includes a two-stage pyrolytic conversion of biomass into gaseous fuel. … The experimental data on composition and quantity of the gaseous products formed in the process of thermal treatment of various types of raw material are presented. …

    Grand Renewable Energy proceedings 1(0), 210, 2018

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  • Numerical Simulation of Combustion and Gasification for a Coal Gasifier  [in Japanese]

    TANNO Kenji , WATANABE Hiroaki

    … Recently, the new concept of carbon dioxide capturing thermal power generation system with keeping high efficiency, named "oxy-fuel IGCC system" was proposed and has been developed. … A coal gasifier is one of the most important utilities in oxy-fuel IGCC system as well as the conventional IGCC system. … The results of numerical simulation in a coal gasifier under oxy-fuel IGCC system are also introduced. …

    Journal of the Combustion Society of Japan 60(194), 242-248, 2018

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  • The effect of premixed carbon monoxide on diesel PCCI combustion  [in Japanese]

    YAMAGUCHI Kyohei , EIZUKA Yuto , KUSAKA Jin , DAISHO Yasuhiro , SUZUKI Hisakazu

    … <p>In this study, we focused on premixed charge compression ignition (PCCI) combustion with dual fuel of carbon monoxide (CO) and diesel fuel. … The effects of CO as fuel on PCCI combustion characteristics were investigated based on engine tests and numerical simulations. … Therefore, there is a possibility that PCCI combustion with dual fuel of CO and diesel fuel will possibly achieve high thermal efficiency.</p> …

    Transactions of the JSME (in Japanese) 84(867), 18-00279-18-00279, 2018

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  • A theoretical study on throttle ranges of O/F controllable hybrid rocket propulsion systems

    OZAWA Kohei , SHIMADA Toru

    … <p>The characteristics of several O/F control methods for hybrid rocket propulsion have been discussed and theoretically analyzed from the physical properties of propellants and fuel regression behavior. …

    Journal of Fluid Science and Technology 13(4), JFST0031-JFST0031, 2018

    J-STAGE 

  • The effect of premixed carbon monoxide on diesel PCCI combustion  [in Japanese]

    YAMAGUCHI Kyohei , EIZUKA Yuto , KUSAKA Jin , DAISHO Yasuhiro , SUZUKI Hisakazu

    … <p>In this study, we focused on premixed charge compression ignition (PCCI) combustion with dual fuel of carbon monoxide (CO) and diesel fuel. … The effects of CO as fuel on PCCI combustion characteristics were investigated based on engine tests and numerical simulations. … Therefore, there is a possibility that PCCI combustion with dual fuel of CO and diesel fuel will possibly achieve high thermal efficiency.</p> …

    Transactions of the JSME (in Japanese), 2018

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  • Hydrocarbon Fuel Production from Lignocellulosic Biomass by Solvolysis and Catalytic Cracking

    Shimada Iori , Kobayashi Yutaka , Ohta Haruhisa , Suzuki Kengo , Takatsuka Toru

    <p>木質バイオマスの石油代替燃料としての利用には,効率的かつ安価な脱酸素化により炭化水素に転換することが求められる。本論文では,加溶媒分解前処理および重質油との混合接触分解からなる2段階プロセスを提案し,これまでの検討結果を報告した。加溶媒分解では,グアイアコールおよび水を溶媒とし,酢酸触媒を用いて90 C%以上の液化を達成した。加溶媒分解で得られた液体生成物と重質油モデル物質(&l …

    Journal of the Japan Petroleum Institute 61(5), 302-310, 2018

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  • Multi-zone Diesel Combustion Model for Prediction of Combustion in Lean Mixture of Gaseous Fuel

    Niki Yoichi , Nitta Yoshifuru , Nishio Sumito , Hirata Koichi

    … <p>The aim of this study was to develop the multi-zone diesel combustion model modified to apply for diesel combustion in lean mixture of gaseous fuel. … We found that the modified model can estimate qualitative effects of mixing gaseous fuel into intake air on combustion. …

    Marine Engineering 53(3), 330-335, 2018

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  • Combustion of Future Marine Fuels

    Takasaki Koji

    … <p>To reduce SOx emission, it has been decided that a global cap for sulfur % of marine fuel, which limits the sulfur content of all marine fuel to within 0.5%, starts from 2020. … Subsequently, conventional heavy fuel oil (HFO) will not be used for any ship that has not been fitted with an exhaust gas SOx scrubber. … For example, the conversion of marine fuel into natural gas is a very effective solution, achieving the reduction of CO<sub>2</sub> …

    Marine Engineering 53(3), 285-292, 2018

    J-STAGE 

  • A Record Flight of the Hybrid Sounding Rocket HEROS 3

    KOBALD Mario , SCHMIERER Christian , FISCHER Ulrich , TOMILIN Konstantin , PETRAROLO Anna

    … The rocket was powered by a 10 kN design thrust hybrid rocket engine with a paraffin-based fuel and Nitrous Oxide (N<sub>2</sub>O) as the oxidizer. … Liquid burn time in the flight was for 15 s with an additional combustion of gaseous N<sub>2</sub>O in the blow-down mode of about 10 s. …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 16(3), 312-317, 2018

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  • Toxic chemicals produced from atmospheric reactions  [in Japanese]

    亀田 貴之

    [第31回環境工学連合講演会 = he 31th National Congress for Environmental Studies] 2018/05/22-2018/05/22, 日本学術会議講堂, 主催: 日本学術会議 土木工学・建築学委員会

    環境工学連合講演会講演論文集 = Proceedings of the National Congress for Environmental Studies (31), 13-16, 2018

    IR 

  • Development of Iodine and Cesium Collection Technique by Ar Plasma(1)  [in Japanese]

    砂川 武義 , Glenn HARVEL , 青木 祐太郎 , 梅田 昌幸 , 井野 博貴 , Pinyapach TIAMDUANGTAWAN

    … From the event of a nuclear plant accident in which the nuclear fuel has been damaged, radioactive iodine gaseous species such as iodine-131 and cesium-137 could be released into the plant environment and nearby. …

    福井工業大学研究紀要 Memoirs of Fukui University of Technology (48), 65-69, 2018

    IR 

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