Updated on 2025/09/26

写真a

 
KATO YUKITAKA
 
Organization
Institute of Integrated Research Laboratory for Zero-Carbon Energy Professor
Title
Professor
External link

Degree

  • Doctor of Engineering ( Tokyo Institute of Technology )

Research Interests

  • ケミカルヒートポンプ

  • 化学エネルギー貯蔵・変換

  • His research interests are in the area of chemical energy conversion technoloies and energy highly-utilizations. In particular he is concerned with development of some types heat pumps driven by using chemical reactions for heat energy storage and transfo

  • 炭素循環型エネルギーシステム

  • 燃料改質

  • 水素製造

  • and carbon active recycle energy system are also his res

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Chemical reaction and process system engineering

  • Energy Engineering / Nuclear engineering

  • Nanotechnology/Materials / Energy chemistry

Education

  • 東京工業大学大学院   理工学研究科   化学工学

    - 1991

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    Country： Japan

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  • Tokyo Institute of Technology   Graduate School, Division of Science and Engineering

    - 1991

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  • Tokyo University of Agriculture and Technology   Faculty of Engineering

    - 1985

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    Country： Japan

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Research History

  • 東京科学大学 総合研究院 ゼロカーボンエネルギー研究所 教授

    2024.10

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  • 東京科学大学 総合研究院 ゼロカーボンエネルギー研究所 所長

    2024.10

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  • 東京工業大学 科学技術創成研究院 ゼロカーボンエネルギー研究所 所長

    2022.4 - 2024.9

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  • 東北大学 多元物質科学研究所 客員教授

    2022.4 - 2023.3

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  • Tokyo Institute of Technology   Lab. for Zero-Carbon Energy, Inst. of Innovative Research   Professor

    2021.6 - 2024.9

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    Country：Japan

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  • Massachusetts Institute of Technology   Department of Nuclear Science and Engineering   Visiting Professor

    2017.9 - 2018.1

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  • Tokyo Institute of Technology   Laboratory for Advanced Nuclear Energy, IIR   Professor

    2015.4 - 2021.5

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  • Tokyo Institute of Technology   Research Laboratory for Nuclear Reactors   Associate Professor

    2008.4 - 2015.3

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  • Tokyo Institute of Technology   Research Laboratory for Nuclear Reactors   Associate Professor

    2002.11 - 2008.3

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  • :エジンバラ大学 環境持続性研究センター 客員研究員

    1997 - 1998

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  • Tokyo Institute of Technology   Research Laboratory for Nuclear Reactors   Assistant Professor

    1991 - 2002

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Professional Memberships

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Committee Memberships

  • 日本鉄鋼協会   環境・エネルギー・社会工学部会 部会長  

    2018.3 - 2020.2   

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    Committee type：Academic society

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  • 日本機械学会   産業・化学装置と安全部門 部門長  

    2017 - 2018   

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    Committee type：Academic society

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  • 日本鉄鋼協会   スマート製鉄システム研究会 主査  

    2015.3 - 2018.2   

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    Committee type：Academic society

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  • Inter National Agency   ECES/Annex 30 Expert from Japan  

    2015 - 2018   

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    Committee type：Academic society

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  • 化学工学会   次世代エネルギー社会検討委員会 委員長  

    2012 - 2017   

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    Committee type：Academic society

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  • 日本鉄鋼協会   環境・エネルギー工学部会運営委員会 グリーンエネルギーフォーラム 座長、環境・エネルギー工学部会運営委員会 委員  

    2009 - 2010   

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    Committee type：Academic society

    日本鉄鋼協会

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  • The Iron and Steel Institute of Japan   Chair of Green Energy Forum in Division of Environment and Energy、Board Member of Division of Environment and Energy  

    2009 - 2010   

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    Committee type：Academic society

    The Iron and Steel Institute of Japan

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  •   Director of the Division of Energy Engineering, Society of Chemical Engineers (SCEJ), Japan.  

    2009 - 2010   

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  •   - Chair, Green Energy Forum, The Iron and Steel Institute of Japan.  

    2009   

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  • 化学工学会   エネルギー部会 部会長、エネルギー部会熱利用分科会代表  

    2008 - 2009   

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    Committee type：Academic society

    化学工学会

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  •   - Chair, Division of Environment and Energy, The Iron and Steel Institute of Japan.  

    2008   

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  •   Expert Member of Japan of IEA ECES Annex 18 , "Transportation of Energy utilizing Thermal Energy Storage Technology", International Energy Agency.  

    2007 - 2009   

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  •   Chair of IMPRES, International Symposium on Innovative Materials for Processes in Energy Systems - for Fuel Cells, Heat Pumps and Related Gas-Solid Technologies -, 28-31 October, 2007, Kyoto Research Park, Kyoto, Japan.  

    2007   

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  •   平成19年4～21年3月 （社）日本機械学会 産業・化学機械と安全部門 代議員（2007（85期）、2008（86期））  

    2007   

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  •   - Member of CRINES, Center for Research into Innovative Nuclear Energy Systems.  

    2006   

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  •   Editorial board member of JSME International Journal, Japan Society of Mechanical Engineers (JSME).  

    2005 - 2008   

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  •   Editorial Member of JCEJ, Journal of Chemical Engineering of Japan.  

    2005 - 2008   

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  •   Council member, Editorial board member, The Heat Transfer Society of Japan (HTSJ).  

    2005 - 2007   

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  •   Editorial board member, The Japan Petroleum Institute.  

    2005 - 2007   

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  •   Chair of Sub-division of Thermal Energy Utilization, DEE, SCEJ, Japan.  

    2004 - 2008   

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  •   Sub-leader of COE-INES, Tokyo Institute of Technology, 21st Century Center Of Excellence (COE) Program on "Innovative Nuclear Energy Systems for Sustainable Development of the World".  

    2003 - 2008   

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  •   平成20年12月1日～22年3月31日 社団法人 日本鉄鋼協会 環境・エネルギー工学部会運営委員会 委員  

       

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  •   平成17年4～19年3月 （社）日本機械学会 産業・化学機械と安全部門 運営委員  

       

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  •   平成17年4～19年1月 JSME International Journal, 日本機械学会英文誌 編集委員  

       

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  •   平成19年4～20年3月 JSME International Journal, 日本機械学会英文誌 校閲委員  

       

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  •   平成20年4月～24年3月 社団法人 日本鉄鋼協会 グリーンエネルギー製鉄研究会委員  

       

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  •   平成20年4月～22年3月 化学工学会 代議員（本部・部会）  

       

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  •   平成19年4月～21年3月 化学工学会 エネルギー部会 副部会長  

       

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  •   平成19年4月～21年3月 化学工学会 エネルギー部会熱利用分科会代表  

       

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  •   平成21年4月1日～23年3月31日 化学工学会 エネルギー部会 部会長  

       

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  •   平成21年4月1日～23年3月31日 社団法人 日本鉄鋼協会 環境・エネルギー工学部会 グリーンエネルギーフォーラム 座長  

       

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  •   平成13年4月～ 化学工学会 エネルギー部会幹事  

       

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  •   平成17年4～19年3月 社団法人 日本伝熱学会 評議員、編集出版部会委員(～第44期)  

       

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  •   平成13年4月～15年3月 化学工学会 エネルギー部会熱利用分科会副代表  

       

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  •   平成15年4月～ 化学工学会 エネルギー部会熱利用分科会代表  

       

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  •   平成17年4～19年3月 石油学会誌論文編集委員  

       

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  •   平成17年4～平成21年3月 化学工学会論文編集委員  

       

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  •   平成7～12年 化学工学会 蓄熱・増熱・熱輸送特別研究会幹事  

       

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Papers

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Books

  • Recent Advancements in Materials and Systems for Thermal Energy Storage

    Yukitaka Kato（ Role： Joint authorpp. 103-117）

    Springer  2018.1 

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  • 潜熱蓄熱・化学蓄熱・潜熱輸送の最前線

    加藤 之貴（ Role： Joint author第3章 化学蓄熱の基礎、第5章化学蓄熱の伝熱促進）

    シーエムシー出版  2016.10 

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  • Energy Technology Roadmaps of Japan

    Yukitaka Kato（ Role： Edit）

    Springer  2016.1 

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  • エネルギー科学と地球温暖化

    加藤 之貴（ Role： Joint author）

    共立出版  2015.1 

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  • Thermal Energy Storage for Sustainable Energy Consumption: Fundamentals, Case Studies and Design

    Springer  2007 

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  • Thermal Energy Storage for Sustainable Energy Consumption: Fundamentals, Case Studies and Design

    Springer  2007 

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  • 骨太のエネルギーロードマップ

    化学工業社  2005 

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  • Honebuto Road Map for Furute Energy System

    2005 

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  • 最近の化学工学55「21世紀の循環型社会を支えるエネルギー化学工学」

    化学工業社  2003 

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  • ケミカルヒートポンプにおける新展開

    最近の化学工学55「21世紀の循環型社会を支えるエネルギー化学工学」  2003 

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  • 蓄熱技術－理論とその応用 －第2編－ 「潜熱蓄熱、化学蓄熱」(分担)

    信山社  2001 

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  • 平成10年度調査報告書 エコ・エネ都市プロジェクトにおける要素技術導入可能性と今後の技術動向に関する調査

    新エネルギー・産業技術総合開発機構  1999 

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  • エネルギー貯蔵及び輸送技術に関する調査及び研究III

    （財）熱・電気エネルギー技術財団  1999 

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  • Educational Reactor-Physics Experiments with the critical Assembly TCA

    JAERI-Review, Japan Atomic Energy Reseanch Institute  1996 

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  • Educational Reactor-Physics Experiments with the critical Assembly TCA

    JAERI-Review, Japan Atomic Energy Reseanch Institute  1996 

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  • 高性能ケミカルヒートポンプ応用事例集

    サイエンスフォーラム  1991 

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MISC

  • Basics and Applications of Thermally Driven Cycle Technologies(No.4)Principle and Application of Thermochemical Energy Storage Technology

    92 ( 1077 )   519 - 523   2017.7

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    Language：Japanese  

    CiNii Books

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  • Enhancement of Thermochemical Energy Storage Material Performance by Thermal Conductivity Enhancement

    92 ( 1075 )   373 - 377   2017.5

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    Language：Japanese  

    CiNii Books

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  • Vision and Technological Options for Future Energy Society

    80 ( 1 )   25 - 27   2016.1

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    Language：Japanese  

    CiNii Books

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  • Heat Utilization by Thermochemical Energy Storage

    54 ( 229 )   5 - 11   2015.10

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    Language：Japanese  

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  • Preface to the Special Issue on "Emerging Technologies for the Ironmaking Process Based on an Active Carbon Recycling Energy System"

    Yukitaka Kato

    ISIJ INTERNATIONAL   55 ( 2 )   339 - 339   2015

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    Language：English  

    Web of Science

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  • Thermochemical Energy Storage for efficient heat recovery and utilization

    C325 - 1-4   2015

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    Language：Japanese  

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  • GS-1 Reaction Performance of Calcium Hydroxide and Expanded Graphite Composites for Chemical Heat Storage Applications

    KARIYA Jun, RYU Junichi, KATO Yukitaka

    Industrial, Chemical Machinery & Safety Division Conference   2014   13 - 14   2014.12

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    A new material for a chemical heat storage (CHS) system based on the calcium oxide/water/calcium hydroxide (CaO/H_2O/Ca(OH)_2) reation system was developed. Mixtures of expanded graphite (EG) and Ca(OH)_2 were evaluated to enhance reaction performance and impart moldability for practical heat exchange in a packed-bed CHS reactor. The reaction kinetics was investigated by thermogravimetric analysis. It was confirmed that hydration and dehydration rates were improved by the mixture of EG and Ca(OH)_2. Especially the hydration was enhanced markedly due to effects of EG. In hydration the maximum conversion change rate of a mixture containing 50 wt% EG was 2.2×10^<-3>[s^<-1>], which was triple that of pure Ca(OH)_2(0.8[s^<-1>]). Thus, the mixed materials were capable of enhancing thermal performance in the CHS system.

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  • Development of Highly Thermal Conductive Thermochemical Energy Storage Materials for Efficient Thermal Energy Utilization

    56 ( 5 )   290 - 295   2014.10

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  • Preface to the Special Issue for International Symposium on Innovative Materials for Processes in Energy Systems 2013 Reviewed

    Michihisa Koyama, Yukitaka Kato, Nobuyoshi Nakagawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   47 ( 7 )   497 - 497   2014.7

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    Language：English  

    Web of Science

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  • Research and Development Trend of Materials for Chemical Heat Storage

    78 ( 2 )   130 - 133   2014.2

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  • Contributions of Thermochemical Energy Storage Technologies to Waste Heat Utilization

    33 ( 7 )   5 - 12   2013.7

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  • Possibility of Active Carbon Recycling Energy System (ACRES)

    KATO Yukitaka

    77 ( 3 )   185 - 187   2013.3

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  • Future energy systems designed by feasible technologies

    Kikuchi Yasunori, Kajikawa Yuya, Kubota Mitsuhiro, Koyama Michihisa, Matsukata Masahiko, Nakagaki Takao, Fukushima Yasuhiro, Fujioka Keiko, Kato Yukitaka

    Abstracts for ILCAJ meeting   2011 ( 0 )   10 - 10   2011

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    Language：Japanese   Publisher：The Institute of Life Cycle Assessment, Japan  

    DOI： 10.11539/ilcaj.2011.0.10.0

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  • Carbon recycling for reduction of carbon dioxide emission from iron-Making process

    Yukitaka Kato

    ISIJ International   50 ( 1 )   181 - 185   2010

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  • Carbon Recycling for Reduction of Carbon Dioxide Emission from Iron-making Process

    Yukitaka Kato

    ISIJ INTERNATIONAL   50 ( 1 )   181 - 185   2010

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  • ケミカルヒートポンプ : 化学反応熱を利用した熱回収技術

    加藤 之貴, 劉 醇一

    化学工学 = Chemical engineering   73 ( 9 )   413 - 416   2009.9

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    Language：Japanese   Publisher：化学工学会  

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  • Study on medium-temperature chemical heat storage using mixed hydroxides

    Yukitaka Kato, Rui Takahashi, Toshiya Sekiguchi, Junichi Ryu

    INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID   32 ( 4 )   661 - 666   2009.6

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  • Development of Chemical Heat Pumps for Utilization of Low-temperature Waste Heats

    Y. Kato

    J. Jpn. Inst. Energy   88 ( 11 )   986 - 993   2009

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  • ケミカルヒートポンプを用いた低温排熱回収

    加藤之貴

    日本エネルギー学会誌   88 ( 11 )   986 - 993   2009

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  • Experimental Study on Fuel Reforming with Carbon Dioxide Recovery for Vehicle Use

    Yukitaka Kato, Ken-ichiro Otsuka, Junichi Ryu

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   42 ( Supplement 1 )   S10 - S16   2009

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  • Dehydration Behavior of Metal-salt-added Magnesium Hydroxide as Chemical Heat Storage Media

    Junichi Ryu, Naoya Hirao, Rui Takahashi, Yukitaka Kato

    CHEMISTRY LETTERS   37 ( 11 )   1140 - 1141   2008.11

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  • Possibility of a Hybrid High-Temperature Process with Chemical Heat Pump

    Journal of Japan Solar Energy Society   34 ( 3 )   15 - 21   2008.5

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  • Thermal Energy Storage : Development of Thermal Storage Materials for Middle-Temperature Heat

    KATO Yukitaka, RYU Junichi

    Energy and resources   29 ( 2 )   83 - 87   2008.3

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  • Carbon Recycle Nuclear Hydrogen Carrier System for Transportation Field

    Y. Kato, K. Otsuka, J. Ryu

    Progress in Nuclear Energy   50 ( 2-6 )   417 - 421   2008

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  • Carbon recycle nuclear hydrogen carrier system for transportation field

    Yukitaka Kato, Ken-ichiro Otsuka, Junichi Ryu

    PROGRESS IN NUCLEAR ENERGY   50 ( 2-6 )   417 - 421   2008

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  • Thermal Energy Storage －Development of Thermal Storage Materials

    YUKITAKA KATO, Junichi RYU

    29 ( 2 )   17 - 21   2008

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  • Carbon Recycle Nuclear Hydrogen Carrier System for Transportation Field

    Y. Kato, K. Otsuka, J. Ryu

    Progress in Nuclear Energy   50 ( 2-6 )   417 - 421   2008

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  • 熱を蓄える―中温蓄熱材料の開発動向―

    加藤之貴, 劉醇一

    エネルギー・資源   29 ( 2 )   17 - 21   2008

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  • Effect of transition metal mixing on reactivities of magnesium oxide for chemical heat pump

    Junichi Ryu, Rui Takahashi, Naoya Hirao, Yukitaka Kato

    Journal of Chemical Engineering of Japan   40 ( 13 )   1281 - 1286   2007.12

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  • Innovative energy materials from HONEBUTO Energy Road Map

    Yukitaka Kato

    Journal of Chemical Engineering of Japan   40 ( 13 )   1141 - 1149   2007.12

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    Language：English   Publishing type：Book review, literature introduction, etc.  

    DOI： 10.1252/jcej.07WE224

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  • Durable reaction material development for magnesium oxide/water chemical heat pump

    Yukitaka Kato, Tomofumi Saito, Tsutomu Soga, Junichi Ryu, Yoshio Yoshizawa

    Journal of Chemical Engineering of Japan   40 ( 13 )   1264 - 1269   2007.12

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  • Durable Reaction Material Development for Magnesium Oxide/Water Chemical Heat Pump

    Yukitaka Kato, Tomofumi Saito, Tsutomu Soga, Junichi Ryu, Yoshio Yoshizawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   40 ( 13 )   1264 - 1269   2007

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  • Status of Small Reactor Designs without On-Site Refueling

    L. Adamovich, S. Banerjee, M. A. Bolshunkhin, E. Budylov, M. Chaki, I V. Dulera, P. A. Fomichnko, K. Furukawa, B. Gabaraev, E. Greenspan, E. I. Grishanin, N. Handa, K. Hibi, T. Ishida, E. Ivanov, M. Kambe, E. Kaplar, Y. Kato, M. Konomura, A. V. Kurachenkov, V. Kuzunetsov, A. N. Lepekhin, A. Minato, S. M. Modro, R. I. K. Moorthy, M. Moriwaki, J. N. Reyes Jr, V. A. Rogov, Y. Sakashita, O. B. Samoilov, F. Sefidvash, H. Sekimoto, Y. Shimazu, J. Sienicki, R. K. Sinha, Z. Su’ud, M. Takahashi, G. I. Toshinsky, G. A. Trifanov, G. Tsiklauri, B. A. Vasilyev, D. Wade, R. Yoshioka, V. N. Zelenskiy

    IAEA-TECDOC-1536, IAEA   2007

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  • Innovative Energy Materials from Honebuto Energy Road Map

    Y. Kato

    J. Chem. Eng. Japan   40 ( 13 )   1141 - 1149   2007

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  • Durable Reaction Material Development for Magnesium Oxide/Water Chemical Heat Pump

    Y. Kato, T. Saito, T. Soga, J. Ryu, Y. Yoshizawa

    J. Chem. Eng. Japan   40 ( 13 )   1264 - 1269   2007

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  • Effect of Transition Metal Mixing on Reactivities of Magnesium Oxide for Chemical Heat Pump

    Junichi Ryu, Rui Takahashi, Naoya Hirao, Yukitaka Kato

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   40 ( 13 )   1281 - 1286   2007

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  • Status of Small Reactor Designs without On-Site Refueling

    L. Adamovich, S. Banerjee, M. A. Bolshunkhin, E. Budylov, M. Chaki, I V. Dulera, P. A. Fomichnko, K. Furukawa, B. Gabaraev, E. Greenspan, E. I. Grishanin, N. Handa, K. Hibi, T. Ishida, E. Ivanov, M. Kambe, E. Kaplar, Y. Kato, M. Konomura, A. V. Kurachenkov, V. Kuzunetsov, A. N. Lepekhin, A. Minato, S. M. Modro, R. I. K. Moorthy, M. Moriwaki, J. N. Reyes Jr, V. A. Rogov, Y. Sakashita, O. B. Samoilov, F. Sefidvash, H. Sekimoto, Y. Shimazu, J. Sienicki, R. K. Sinha, Z. Su’ud, M. Takahashi, G. I. Toshinsky, G. A. Trifanov, G. Tsiklauri, B. A. Vasilyev, D. Wade, R. Yoshioka, V. N. Zelenskiy

    IAEA-TECDOC-1536, IAEA   2007

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  • Innovative Energy Materials from Honebuto Energy Road Map

    Y. Kato

    J. Chem. Eng. Japan   40 ( 13 )   1141 - 1149   2007

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  • Innovative Energy Materials from HONEBUTO Energy Road Map

    Yukitaka Kato

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   40 ( 13 )   1141 - 1149   2007

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  • 非反応平衡を利用した水素システムの開発

    加藤之貴

    化学工学   70 ( 3 )   155 - 158   2006

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  • Possibility of a Chemical Hydrogen Carrier System Based on Nuclear Power

    YUKITAKA KATO

    NEA-OECD   309 - 318   2006

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  • Possibility of a Chemical Hydrogen Carrier System Based on Nuclear Power

    YUKITAKA KATO

    NEA-OECD   309 - 318   2006

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  • Magnesium oxide/water chemical heat pump to enhance energy utilization of a cogeneration system

    Y Kato, Y Sasaki, Y Yoshizawa

    ENERGY   30 ( 11-12 )   2144 - 2155   2005.8

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  • Carbon dioxide zero-emission hydrogen carrier system for fuel cell vehicle

    Y Kato, K Otsuka, CY Liu

    CHEMICAL ENGINEERING RESEARCH & DESIGN   83 ( A7 )   900 - 904   2005.7

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  • Heat storage with water sorption-desorption by metal salt added porous material

    LIU Chun Yi, MOROFUJI Kentaro, NAGAI Kohki, KATO Yukitaka, AIKA Ken-ichi

    46 ( 6 )   480 - 482   2004.9

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  • Numerical Study on the Thermal Performance of Packed Bed Reactor for CaO/CO2 Chemical Heat Pump

    Li Guangzhe, Kato Yukitaka, Yoshiawa Yoshio

    Asian Pacific Confederation of Chemical Engineering congress program and abstracts   2004   538 - 538   2004

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    Language：English   Publisher：The Society of Chemical Engineers, Japan  

    A gas circular loop system of CaO/CO2 chemical heat pump was proposed due to improve the thermal performance of the heat pump. The loop system consists of CaO packed reactor, a carbon dioxide storage reactor, heat exchanges and a high temperature pump. The carbon dioxide as working fluid is circulating in this loop. In the design of the loop system, the understanding thermal performance on the CaO packed reactor and choosing of optimum reactor operation condition are important. This study mainly deals with the CaO packed reactor. The carbonation rate of calcium oxide in the packed reactor was discussed as function of the initial reaction temperature and reaction pressure, experimentally. Then, an analytical model for thermal performance evaluation in the packed reactor was developed, and was validated by experimental results. The heat output performance of the loop system was evaluated using the analytical model. The numerical analysis indicated that the proposed system could realize an effective heat recovery and high heat output performance at a constant temperature.

    DOI： 10.11491/apcche.2004.0.538.0

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  • Invitation to Museum World

    YUKITAKA KATO

    J. Heat Transfer Society of Japan   43   26 - 29   2004

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  • Numerical Study on the Thermal Performance of Packed Bed Reactor for CaO/CO2 Chemical Heat Pump

    Guangzhe Li, Y. Kato, Y. Yoshizawa

    41st National Heat Transfer Symposium   2004   538 - 538   2004

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    Language：English   Publisher：The Society of Chemical Engineers, Japan  

    A gas circular loop system of CaO/CO2 chemical heat pump was proposed due to improve the thermal performance of the heat pump. The loop system consists of CaO packed reactor, a carbon dioxide storage reactor, heat exchanges and a high temperature pump. The carbon dioxide as working fluid is circulating in this loop. In the design of the loop system, the understanding thermal performance on the CaO packed reactor and choosing of optimum reactor operation condition are important. This study mainly deals with the CaO packed reactor. The carbonation rate of calcium oxide in the packed reactor was discussed as function of the initial reaction temperature and reaction pressure, experimentally. Then, an analytical model for thermal performance evaluation in the packed reactor was developed, and was validated by experimental results. The heat output performance of the loop system was evaluated using the analytical model. The numerical analysis indicated that the proposed system could realize an effective heat recovery and high heat output performance at a constant temperature.

    DOI： 10.11491/apcche.2004.0.538.0

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  • Chemical Material Development for Energy System

    KATO Yukitaka

    Journal of the Heat Transfer Society of Japan   43 ( 179 )   7 - 11   2004

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    Language：Japanese   Publisher：The Heat Transfer Society of Japan  

    DOI： 10.11368/htsj1999.43.179_7

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    Other Link： https://jlc.jst.go.jp/DN/JALC/00237818430?from=CiNii

  • Invitation to Museum World

    YUKITAKA KATO

    J. Heat Transfer Society of Japan   43   26 - 29   2004

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  • Chemical Material Development for Energy System

    YUKITAKA KATO

    J. Heat Transfer Society of Japan   43 ( 179 )   7 - 11   2004

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  • Thermal performance measurement of a packed bed reactor of a magnesium oxide/water chemical heat pump

    Y Kato, Y Sasaki, Y Yoshizawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   36 ( 7 )   833 - 839   2003.7

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  • Study on a regenerative fuel reformer for a zero-emission vehicle system

    Yukitaka Kato, Keiko Ando, Yoshio Yoshizawa

    Journal of Chemical Engineering of Japan   36 ( 7 )   860 - 866   2003.7

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  • Study on a regenerative fuel reformer for a zero-emission vehicle system

    Y Kato, K Ando, Y Yoshizawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   36 ( 7 )   860 - 866   2003.7

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  • Applicability of calcium oxide in a cascading sorption cooling system

    B Cerkvenik, Y Kato, F Storkenmaier

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   35 ( 10 )   969 - 976   2002.10

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  • Heat and mass transfer in a packed bed reactor for calcium oxide/carbon dioxide chemical heat pump

    GZ Li, T Kanie, Y Kato, Y Yoshizawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   35 ( 9 )   886 - 892   2002.9

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  • Heat and mass transfer in a packed bed reactor for calcium oxide/carbon dioxide chemical heat pump

    Guangzhe Li, Toshihiro Kanie, Yukitaka Kato, Yoshio Yoshizawa

    Journal of Chemical Engineering of Japan   35 ( 9 )   886 - 892   2002

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    Language：English   Publisher：Society of Chemical Engineers, Japan  

    DOI： 10.1252/jcej.35.886

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  • Calcium oxide/carbon dioxide reactivity in a packed bed reactor of a chemical heat pump for high-temperature gas reactors

    Yukitaka Kato, Mitsuteru Yamada, Toshihiro Kanie, Yoshio Yoshizawa

    Nuclear Engineering and Design   210 ( 1-3 )   1 - 8   2001.12

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  • Operability of a thermally driven magnesium oxide/water chemical heat pump

    Y Kato, A Minakami, GZ Li, Y Yoshizawa

    CANADIAN JOURNAL OF CHEMICAL ENGINEERING   79 ( 4 )   536 - 541   2001.8

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  • Thermal analysis of a magnesium oxide/water chemical heat pump for cogeneration

    Y Kato, F Takahashi, A Watanabe, Y Yoshizawa

    APPLIED THERMAL ENGINEERING   21 ( 10 )   1067 - 1081   2001.7

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  • Thermal analysis of a magnesium oxide/water chemical heat pump for cogeneration

    Yukitaka Kato, Fu-uta Takahashi, Akihiko Watanabe, Yoshio Yoshizawa

    Applied Thermal Engineering   21 ( 10 )   1067 - 1081   2001.7

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  • Thermal performance of a packed bed reactor for a high-temperature chemical heat pump

    Yukitaka Kato, Tadashi O-shima, Yoshio Yoshizawa

    International Journal of Energy Research   25 ( 7 )   577 - 589   2001.6

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    Language：English  

    DOI： 10.1002/er.704

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  • Thermal performance of a packed bed reactor for a high-temperature chemical heat pump

    Y Kato, T O-shima, Y Yoshizawa

    INTERNATIONAL JOURNAL OF ENERGY RESEARCH   25 ( 7 )   577 - 589   2001.6

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  • Application of a chemical heat pump to a cogeneration system

    Y Kato, Y Yoshizawa

    INTERNATIONAL JOURNAL OF ENERGY RESEARCH   25 ( 2 )   129 - 140   2001.2

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  • 酸化マグネシウム／水系ケミカルヒートポンプ反応器の熱出力挙動解析

    加藤之貴

    第38回日本伝熱シンポジウム講演論文集   1   257 - 258   2001

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  • Application of a Chemical Heat Pump to a Cogeneration System

    Yukitaka Kato, Y. Yoshizawa

    Int. J. Energy Research   25 ( 2 )   129 - 140   2001

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  • Operability of a Thermally Driven Magnesium Oxide/Water Chemical Heat Pump

    Yukitaka Kato, A. Minakami, G. Li, Y. Yoshizawa

    Canadian J. of Chemical Engineering   79 ( 4 )   536 - 541   2001

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  • Thermal performance of a packed bed reactor of a chemical heat pump for cogeneration

    Y Kato, F Takahashi, A Watanabe, Y Yoshizawa

    CHEMICAL ENGINEERING RESEARCH & DESIGN   78 ( A5 )   745 - 748   2000.7

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  • Energy performance analysis of isobutene/water/tert-butanol chemical heat pump

    Y Kato, CL Pritchard

    CHEMICAL ENGINEERING RESEARCH & DESIGN   78 ( A2 )   184 - 191   2000.3

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  • Possibility of Low Exergy Reactor for Decentralized Energy System

    Yukitaka Kato

    Bull. Res. Lab. Nuclear Reactors   24   34   2000

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  • Application of a Chemical Heat Pump on High-Temperature Heat Process for High Efficiency Energy Utilization

    Kato, Y. M, Yamada, Y. Yoshizawa

    Intl. J. Environmentally Conscious Design and Manufacturing   9 ( 3 )   11 - 18   2000

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  • Measurements of Gas Diffusion in Supercritical Water

    KUGE Katsuya, MURAYAMA Yusuke, KATO Yukitaka, YOSHIZAWA Yoshio

    Journal of the Japan Institute of Energy   79 ( 11 )   1088 - 1094   2000

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  • Interferometric measurements of gas diffusivity in supercritical water

    K Kuge, Y Murayama, T Honda, Y Kato, Y Yoshizawa

    PROGRESS IN NUCLEAR ENERGY   37 ( 1-4 )   441 - 446   2000

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  • 酸化マグネシウム／水系ケミカルヒートポンプの熱出力性能試験

    大峯幸輝, 村瀬直, 加藤之貴, 吉澤善男

    第37回日本伝熱シンポジウム講演論文集   3 ( E311 )   813 - 814   2000

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  • 酸化マグネシウム／水系ケミカルヒートポンプの熱駆動特性に関する研究

    水上敦司, 佐々木泰海, 加藤之貴, 吉澤善男

    第37回日本伝熱シンポジウム講演論文集   3 ( E312 )   815 - 816   2000

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  • Possibility of Low Exergy Reactor for Decentralized Energy System

    Yukitaka Kato

    Bull. Res. Lab. Nuclear Reactors   24   34   2000

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  • Low exergy reactor for decentralized energy utilization

    Y Kato

    PROGRESS IN NUCLEAR ENERGY   37 ( 1-4 )   405 - 410   2000

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  • Low Exergy Reactor for Decentralized Energy Utilization

    YUKITAKA KATO

    Progress in Nuclear Energy   37 ( 1-4 )   405 - 410   2000

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  • Application of a Chemical Heat Pump on High-Temperature Heat Process for High Efficiency Energy Utilization

    Kato, Y. M, Yamada, Y. Yoshizawa

    Intl. J. Environmentally Conscious Design and Manufacturing   9 ( 3 )   11 - 18   2000

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  • 酸化マグネシウム／水系ケミカルヒートポンプの熱駆動特性

    加藤之貴, 水上敦司, 佐々木泰海, 李光哲, 吉澤善男

    化学工学会第33回秋季大会予稿集   ( C315 )   2000

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  • Thermal Performance Experiment of Magnesium Oxide / Water Chemical Heat Pump

    3 ( E311 )   813 - 814   2000

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  • Thermal drivability of magnesium oxide/water chemical heat pump

    3 ( E312 )   815 - 816   2000

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  • Kinetic feasibility of a chemical heat pump for heat utilization of high-temperature processes

    Y Kato, N Harada, Y Yoshizawa

    APPLIED THERMAL ENGINEERING   19 ( 3 )   239 - 254   1999.3

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  • Durability characteristics of the hydration of magnesium oxide under repetitive reaction

    Y Kato, J Nakahata, Y Yoshizawa

    JOURNAL OF MATERIALS SCIENCE   34 ( 3 )   475 - 480   1999.2

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  • Kinetic Feasibility of a Chemical Heat Pump for Heat Utilization of High-Temperature Processes

    Yukitaka KATO, Naozumi Harada, Yoshio Yoshizawa

    Applied Thermal Engineering   19 ( 1 )   239 - 254   1999

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  • Durability to repetitive reaction of magnesium oxide/water reaction system for a heat pump

    Y Kato, K Kobayashi, Y Yoshizawa

    APPLIED THERMAL ENGINEERING   18 ( 3-4 )   85 - 92   1998.3

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  • Utilization of high temperature heat from nuclear reactor using inorganic chemical heat pump

    Y Kato, D Saku, N Harada, Y Yoshizawa

    PROGRESS IN NUCLEAR ENERGY   32 ( 3-4 )   563 - 570   1998

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  • Heat Output Performance Study of Magnesium Oxide/Water Chemical Heat Pump

    Yukitaka Kato, Fuuta Takahashi, Nanmoku Wataru, Yoshio Yoshizawa, Fuuta Takahashi, Wataru Nanmoku

    Kagaku Kogaku Ronbunshu   24 ( 6 )   840 - 844   1998

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  • Cold Heat Storage Performance of Amine/Water Solutions

    Yukitaka Kato, Hiroshi Hashimoto, Yoshio Yoshizawa, Hiroshi Hashimoto

    Kagaku Kogaku Ronbunshu   24 ( 6 )   834 - 839   1998

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  • Utilization of high temperature heat using a calcium oxide lead oxide carbon dioxide chemical heat pump

    Y Kato, D Saku, N Harada, Y Yoshizawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   30 ( 6 )   1013 - 1019   1997.12

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  • Kinetic study of the hydration of magnesium oxide for a chemical heat pump

    Y Kato, N Yamashita, K Kobayashi, Y Yoshizawa

    APPLIED THERMAL ENGINEERING   16 ( 11 )   853 - 862   1996.11

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  • Kinetic measurement on the isobutene/water/tert-butanol chemical heat pump; Dehydration of tert-butanol

    Y Kato, T Hondo, A Kanzawa

    INTERNATIONAL JOURNAL OF ENERGY RESEARCH   20 ( 8 )   681 - 692   1996.8

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  • STUDY OF CHEMICAL HEAT-PUMP WITH REACTION SYSTEM OF MAGNESIUM-OXIDE WATER - ACTIVATION OF MAGNESIUM-OXIDE HYDRATION

    Y KATO, N YAMASHITA, Y YOSHIZAWA

    KAGAKU KOGAKU RONBUNSHU   19 ( 6 )   1213 - 1216   1993.11

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    DOI： 10.1252/kakoronbunshu.19.1213

    Web of Science

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  • 酸化マグネシウム・水系ケミカルヒートポンプに関する研究-酸化マグネシウム水和反応の活性化-

    加藤之貴, 山下理道, 吉澤善男

    化学工学論文集   19 ( 6 )   1213 - 16   1993

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  • STUDY OF CHEMICAL HEAT-PUMP WITH REACTION SYSTEM OF ISOBUTENE WATER TERT-BUTANOL

    Y KATO, T HONDA, A KANZAWA

    KAGAKU KOGAKU RONBUNSHU   17 ( 1 )   135 - 142   1991.1

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  • Study of Chemical Heat Pump with Reaction System of Isobutene/Water/ tert-Butanol

    Yukitaka Kato, Takuya Honda, Atsushi Kanzawa

    KAGAKU KOGAKU RONBUNSHU   17 ( 1 )   135 - 142   1991

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  • The study of acetone/Hydrogen/2-Propanol Chemical Heat pump.

    Kagaku-Kogaku Ronbun-shu   13 ( 5 )   714 - 717   1987

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  • Study of Chemical Heat Pump with Reaction Couple of Acetone Hydrogenation / 2-Propanol Dehydrogenation: Kinetics of the Hydrogenation of Acetone

    Yukitaka Kato, Nobuyoshi Nakagawa, Hideo Kameyama

    KAGAKU KOGAKU RONBUNSHU   13 ( 5 )   714 - 717   1987

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▼display all

Presentations

  • A Roadmap on Energy Conversion Technologies utilizing Chemical Reaction

    Symposium on Materials and Systems for Energy Conversion  2005 

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  • Study on Hydrogen Carrier System Based on Nuclear Power

    International Congress on Advances in Nuclear Power Plants (ICAPP'05)  2005 

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  • Zero Carbon Dioxide Release Hydrogen System Using Nuclear Powers

    American Nuclear Society Transaction  2005 

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  • POSSIBILITY OF A CHEMICAL HYDROGEN CARRIER SYSTEM BASED ON NUCLEAR POWER

    3rd Information Exchange Meeting on the Nuclear Production of Hydrogen and 2nd HTTR Workshop on Hydrogen Production Technology  2005 

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  • Carbon Dioxide Zero-Emission Hydrogen Carrier System for Fuel Cell Vehicle

    7th World Congress of Chemical Engineering (WCCE2005)  2005 

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  • POSSIBILITY OF A CHEMICAL HYDROGEN CARRIER SYSTEM BASED ON NUCLEAR POWER

    3rd Information Exchange Meeting on the Nuclear Production of Hydrogen and 2nd HTTR Workshop on Hydrogen Production Technology  2005 

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  • Carbon Dioxide Zero-Emission Hydrogen Carrier System for Fuel Cell Vehicle

    7th World Congress of Chemical Engineering (WCCE2005)  2005 

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  • A Study on Hydrogen Carrier System for Fuel Cell Vehicle

    Proc. of VI Minsk International Seminar, ”HEAT PIPES, HEAT PUMPS, REFRIGERATORS”  2005 

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  • A Roadmap on Energy Conversion Technologies utilizing Chemical Reaction

    Symposium on Materials and Systems for Energy Conversion  2005 

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  • Study on Hydrogen Carrier System Based on Nuclear Power

    International Congress on Advances in Nuclear Power Plants (ICAPP'05)  2005 

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  • Zero Carbon Dioxide Release Hydrogen System Using Nuclear Powers

    American Nuclear Society Transaction  2005 

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  • Reactor Study on Middle Temperature Heat Storage using Chemical Composite Materials

    Proc. of International Sorption Heat Pump Conference 2008  2010 

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  • Reactor Study on Middle Temperature Heat Storage using Chemical Composite Materials

    Proc. of International Sorption Heat Pump Conference 2008  2010 

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  • THERMAL ENERGY STORAGES IN VEHICLES FOR FUEL EFFICIENCY IMPROVEMENT

    The 11th Intl Conference on Thermal Energy Storage (Effstock 2009)  2009 

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  • Study of catalyst assisted chemical Heat Pump with Reaction Couple of acetone hydrogenation and 2-propanol dehydration

    World congress III of Chemical Engineering  1986 

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  • Carbon Recycle Nuclear Energy Systems for Vehicles

    The Second Tokyo Tech-MIT Symposium on Innovative Nuclear Energy Systems (TM-INES 2)  2007 

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  • A Kinetic study of magnesium oxide/water chemical heat pump

    44th Canadian chemical engineering conference  1994 

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  • A Kinetic study of magnesium oxide/water chemical heat pump

    44th Canadian chemical engineering conference  1994 

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  • Study of catalyst assisted chemical Heat Pump with Reaction Couple of acetone hydrogenation and 2-propanol dehydration

    World congress III of Chemical Engineering  1986 

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  • Application of Inorganic Oxide / Carbon Dioxide Reaction System to a Chemical Heat Pump

    Proceeding of 31st Intersociety of Energy Conversion Engineering Conf.  1996 

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  • Application of Inorganic Oxide / Carbon Dioxide Reaction System to a Chemical Heat Pump

    Proceedings of 31st Intersociety of Energy Conversion Engineering Conference (31st IECEC)  1996 

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  • Kinetic Study of Magnesium Oxide/Water Chemical Heat Pump

    Porceedings of the 30th. Infersociety Energy Conversion Engineering Conf.  1995 

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  • Kinetic Study of Magnesium Oxide/Water Chemical Heat Pump

    Porceedings of the 30th. Infersociety Energy Conversion Engineering Conf.  1995 

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  • Researches on Ignition Mechanism and Turbulent Combustion of Premixed Hydrogen-Air Mixtures in the Connected Compartments

    Proceedings of the 5th International Conference on Nuclear Engineering (ICONE-5)  1997 

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  • Application of Inorganic Oxide / Carbon Dioxide Reaction System to a Chemical Heat Pump

    Proceeding of 31st Intersociety of Energy Conversion Engineering Conf.  1996 

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  • Application of Inorganic Oxide / Carbon Dioxide Reaction System to a Chemical Heat Pump

    Proceedings of 31st Intersociety of Energy Conversion Engineering Conference (31st IECEC)  1996 

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  • Experimental study of a chemical heat pump reactor for a enhancement of cogeneration performance

    Proceeding of 8th International Conference on Thermal Energy Storage (TERRATOCK 2000)  2000 

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  • Reactivity study of a packed bed reactor for a magnesium oxide/water chemical heat pump

    Proc. of Energy Engineering Symposium of the society of Chemical Engineers, Japan  2001 

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  • Reactivity study of a packed bed reactor for a magnesium oxide/water chemical heat pump

    Proc. of Energy Engineering Symposium of the society of Chemical Engineers, Japan  2001 

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  • Experimental study of a chemical heat pump reactor for a enhancement of cogeneration performance

    Proceeding of 8th International Conference on Thermal Energy Storage (TERRATOCK 2000)  2000 

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  • Application of a Chemical Heat Pump on High-Temperature Heat Process for High Efficiency Energy Utilization, Proceedings for 4th Minsk International Seminar

    Proceedings for 4th Minsk International Seminar Heat Pipes, Heat Pumps, Refrigerators  2000 

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  • Basic study on thermally regenerative fuel reformer

    Proc. of Energy Engineering Symposium of the society of Chemical Engineers  2002 

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  • Operability Analysis of a Magnesium Oxide/Water Chemical Heat Pump for Cogeneration

    Proc. of International Sorption Heat Pump Conf. (ISHPC 2002)  2002 

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  • Chemical Heat Pump for Energy Utilization of Cogeneration System

    Proc. of 5th Intl. Symposium on CO_2_ Fixation and Efficient Utilization of Energy (C&E2002)  2002 

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  • Study on carbonation reactivity of calcium oxide in a packed bed reactor

    Proc. of Energy Engineering Symposium of the society of Chemical Engineers, Japan  2002 

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  • Study on carbonation reactivity of calcium oxide in a packed bed reactor

    Proc. of Energy Engineering Symposium of the society of Chemical Engineers, Japan  2002 

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  • Thermal Performance of a Cogeneration System using a Chemical Heat Pump

    Proceedings of International Sorption Heat Pump Conf. (ISHPC '99)  1999 

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  • Reaction Durability of a Magnesium Oxide / Water Chemical Heat Pump

    Proceedings of 32nd Intersociety of Energy Conversion Engineering Conference  1997 

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  • Researches on Ignition Mechanism and Turbulent Combustion of Premixed Hydrogen-Air Mixtures in the Connected Compartments

    Proceedings of the 5th International Conference on Nuclear Engineering (ICONE-5)  1997 

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  • Reaction Durability of a Magnesium Oxide / Water Chemical Heat Pump

    Proceedings of 32nd Intersociety of Energy Conversion Engineering Conference  1997 

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  • Energy analysis of a high-temperature chemical heat pump

    Proceedings of 34th Intersociety of Energy Conversion Engineering Conference (34th IECEC)  1999 

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  • Thermal Performance of a Cogeneration System using a Chemical Heat Pump

    Proceedings of International Sorption Heat Pump Conf. (ISHPC '99)  1999 

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  • Interferometric Measurements of Gas Diffusivity in Supercritical Water

    Proceedings of the Symposium on Energy Engineering in the 21st Century (SEE2000)  1999 

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  • Energy analysis of a high-temperature chemical heat pump

    Proceedings of 34th Intersociety of Energy Conversion Engineering Conference (34th IECEC)  1999 

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  • Application of a Chemical Heat Pump on High-Temperature Heat Process for High Efficiency Energy Utilization, Proceedings for 4th Minsk International Seminar

    Proceedings for 4th Minsk International Seminar Heat Pipes, Heat Pumps, Refrigerators  2000 

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  • Interferometric Measurements of Gas Diffusivity in Supercritical Water

    Proceedings of the Symposium on Energy Engineering in the 21st Century (SEE2000)  1999 

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  • Bed Reactor Demonstration of a Magnesium Oxide/Water Chemical Heat Pump

    Procd. of 3rd Int. Heat Powered Cycles Conference (HPC 2004)  2004 

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  • Chemical Thermal Energy Storage System using Metal Oxide Reactions for High Temperature Heat Utilization

    Proc. of 6th Expert Meeting and Workshop of Annex 17 to the IEA Implementing Agreement on Energy Conservation trough Energy Storage  2004 

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  • Zero-emission Fuel Cell Vehicle System Based on Nuclear Power System

    Proc. of International Conf. of Global Environment and Advanced Nuclear Power Plants (GENES4/ANP2003)  2003 

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  • Bed Reactor Demonstration of a Magnesium Oxide/Water Chemical Heat Pump

    Procd. of 3rd Int. Heat Powered Cycles Conference (HPC 2004)  2004 

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  • Chemical Thermal Energy Storage System using Metal Oxide Reactions for High Temperature Heat Utilization

    Proc. of 6th Expert Meeting and Workshop of Annex 17 to the IEA Implementing Agreement on Energy Conservation trough Energy Storage  2004 

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  • Hydrogen Career System for Fuel Cell Vehicles

    Procd. of 10th Asian Pacific Confederation of Chemical Engineering Conference (APCChE2004)  2004 

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  • Numerical Study on the Thermal Performance of Packed Bed Reactor for CaO/CO2 Chemical Heat Pump

    Procd. of 10th Asian Pacific Confederation of Chemical Engineering Conference (APCChE2004)  2004 

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  • A Study on Hydrogen Carrier System for Fuel Cell Vehicle

    Proc. of VI Minsk International Seminar, ”HEAT PIPES, HEAT PUMPS, REFRIGERATORS”  2005 

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  • Hydrogen Career System for Fuel Cell Vehicles

    Procd. of 10th Asian Pacific Confederation of Chemical Engineering Conference (APCChE2004)  2004 

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  • Numerical Study on the Thermal Performance of Packed Bed Reactor for CaO/CO2 Chemical Heat Pump

    Procd. of 10th Asian Pacific Confederation of Chemical Engineering Conference (APCChE2004)  2004 

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  • Operability Analysis of a Magnesium Oxide/Water Chemical Heat Pump for Cogeneration

    Proc. of International Sorption Heat Pump Conf. (ISHPC 2002)  2002 

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  • Chemical Heat Pump for Energy Utilization of Cogeneration System

    Proc. of 5th Intl. Symposium on CO_2_ Fixation and Efficient Utilization of Energy (C&E2002)  2002 

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  • Development of a Magnesium Oxide/Water Chemical Heat Pump for Efficient Energy Storage and Utilization

    Proc. of the 5th Minsk International Seminar “Heat pipes, heat pumps, refrigerators”  2003 

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  • Magnesium Oxide/Water Chemical Heat Pump for Efficient Energy Storage and Utilization

    Proc. of the 9th International Conference on Thermal Energy Storage (FUTURESTOCK)  2003 

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  • Thermally Regenerative Fuel Reformer for a Zero Emission Vehicle System

    Proc. of 16th International Conf. on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems (ECOS 2003)  2003 

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  • Basic study on thermally regenerative fuel reformer

    Proc. of Energy Engineering Symposium of the society of Chemical Engineers  2002 

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  • Development of a Magnesium Oxide/Water Chemical Heat Pump for Efficient Energy Storage and Utilization

    Proc. of the 5th Minsk International Seminar “Heat pipes, heat pumps, refrigerators”  2003 

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  • Magnesium Oxide/Water Chemical Heat Pump for Efficient Energy Storage and Utilization

    Proc. of the 9th International Conference on Thermal Energy Storage (FUTURESTOCK)  2003 

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  • Thermally Regenerative Fuel Reformer for a Zero Emission Vehicle System

    Proc. of 16th International Conf. on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems (ECOS 2003)  2003 

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  • Zero-emission Fuel Cell Vehicle System Based on Nuclear Power System

    Proc. of International Conf. of Global Environment and Advanced Nuclear Power Plants (GENES4/ANP2003)  2003 

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  • THERMAL ENERGY STORAGES IN VEHICLES FOR FUEL EFFICIENCY IMPROVEMENT

    The 11th Intl Conference on Thermal Energy Storage (Effstock 2009)  2009 

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  • Carbon Recycle Nuclear Hydrogen Carrier System using Nuclear Power

    International Conference on Non-Electric Applications of Nuclear Power: Seawater Desalination, Hydrogen Production and other Industrial Applications  2007 

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  • Possibility of Chemical Heat storage in Thermal Energy Transportation Market

    First Workshop of IEA/ECES Annex 18  2006 

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  • PACKED BED REACTOR DEMONSTRATION OF MAGNESIUM OXIDE/WATER CHEMICAL HEAT PUMP

    The Tenth International Conference on Thermal Energy Storage (Ecostock 2006)  2006 

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  • THERMAL STORAGE PERFORMANCE OF MAGNESIUM OXIDE/WATER CHEMICAL HEAT PUMP

    4th Int. Heat Powered Cycles Conference, HPC2006  2006 

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  • Possibility of Chemical Heat storage in Thermal Energy Transportation Market

    First Workshop of IEA/ECES Annex 18  2006 

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  • Carbon Recycle Nuclear Hydrogen Carrier System using Nuclear Power

    International Conference on Non-Electric Applications of Nuclear Power: Seawater Desalination, Hydrogen Production and other Industrial Applications  2007 

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  • Carbon Recycle Nuclear Energy Systems for Vehicles

    The Second Tokyo Tech-MIT Symposium on Innovative Nuclear Energy Systems (TM-INES 2)  2007 

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  • PACKED BED REACTOR DEMONSTRATION OF MAGNESIUM OXIDE/WATER CHEMICAL HEAT PUMP

    The Tenth International Conference on Thermal Energy Storage (Ecostock 2006)  2006 

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  • THERMAL STORAGE PERFORMANCE OF MAGNESIUM OXIDE/WATER CHEMICAL HEAT PUMP

    4th Int. Heat Powered Cycles Conference, HPC2006  2006 

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Works

  • 「水素貯蔵膜／水素透過膜」特性データの測定

    2004

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    Work type：Artistic work  

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  • Performance measurement of hydrogen permeability and hydrogen storage ability of materials

    2004

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    Work type：Artistic work  

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  • Sevelopment of plate-type non-equilibrium fuel reformer

    2003 - 2004

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    Work type：Artistic work  

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  • 平板型非平衡改質に関する研究

    2003 - 2004

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    Work type：Artistic work  

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  • 酸化マグネシウム／水系ケミカルヒートポンプ充填層型装置の熱出力性能試験

    1994 - 2004

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  • Thermal performace demonstration of a packed reactor bed of a magnesium oxide/water chemical heat pump

    1994 - 2004

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Research Projects

  • 大規模二酸化炭素資源化のための金属基板固体酸化物電気分解セルスタックの開発

    Grant number：19H02807  2019.4 - 2023.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    加藤 之貴, 高須 大輝, 佐伯 功

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    Grant amount：\17420000 （ Direct Cost: \13400000 、 Indirect Cost：\4020000 ）

    二酸化炭素(CO2)を資源として循環する炭素循環エネルギーシステムの産業実装による産業の革新的な低炭素化が本研究のゴールである。CO2の還元・資源化がキーテクノロジーであり、本研究では固体酸化物電気分解セル（Solid Oxide Electrolysis Cell、SOEC）を用いたCO2還元によるCO2資源化を目指している。社会実装に必要な大量還元の大面積化を実現するため、金属基板上にSOECを製膜した新たな金属基板支持SOEC (MS-SOEC)の開発を進め、セルの大面積化、大規模CO2還元の可能性を示し、合わせて、積層化（スタック化）のための技術課題の解決を目指した。
    SOECの構造は既に実用が進んでいる固体酸化物燃料電池（SOFC）と同等の構成を有している。技術のボトルネックはセルの大面積化である。そこで金属基板上にSOECを製膜した金属基板支持SOEC (Metal Supported-SOEC, MS-SOEC)を開発した。本研究ではMS-SOECの大面積化、スタック化の課題の特定と解決を進め、大容量CO2還元の概念実証を目的とする。大面積セルの製作パラメータは金属基板構造、大気圧プラズマ溶射にそれぞれにあり、これらの製作パラメータの最適化を行い性能向上を計った。MS~SOECによるCO2電気分解そして一酸化炭素（CO）、酸素生成の実証に成功している。他に事例が見られず独自性の高い成果と判断された。COは炭素材料の素材物質として有用である。本研究ではMS-SOECの製作と実験的検討を行い、MS-SOECの有用性を検討することとした。

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  • Metal supported solid oxide electrolysis cell for carbon dioxide recycle usage

    Grant number：16H04644  2016.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Kato Yukitaka

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    Grant amount：\17290000 （ Direct Cost: \13300000 、 Indirect Cost：\3990000 ）

    We improved the metal-based solid oxide electrolysis cell (MS-SOEC) to improve electrolysis performance. A large number of micrometer-order pores for gas diffusion were opened in the metal substrate. Atmosphere plasma spray method (APS) was used for the anode and cathode layers of the SOEC body. A CO2 electrolysis test was performed. We confirmed the production of CO and O2 by electrolysis of the target CO2, and demonstrated that the fabricated cell functions as MS-SOEC. It was judged that the research purpose was achieved by the production of the initially planned MS-SOEC and the demonstration of its operation.

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  • Development of Metal Supported Solid Oxide Electrolysis Cell for Renewable Energy Utilization

    Grant number：15K14300  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    Kato Yukitaka

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    Grant amount：\3900000 （ Direct Cost: \3000000 、 Indirect Cost：\900000 ）

    Metal Supported Solid Oxide Electrolysis Cell (MS-SOEC) was developed for instable renewable energy electricity utilization by hydrogen or carbon monoxide productions form water or carbon dioxide electrolysis. An MS-SOEC was produced under a new process, and demonstrated of electrolysis ability by cell experiment. The MS-SOEC methodology was expected to be applicable for enhancement of surface area of MS-SOEC and large-scale renewable energy system.

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  • Cost structure analysis of emerging technology in energy supply chain

    Grant number：26285080  2014.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Kajikawa Yuya

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    Grant amount：\13520000 （ Direct Cost: \10400000 、 Indirect Cost：\3120000 ）

    This research investigated emerging energy technologies and their cost structures. We visualized research trend and extracted emerging domains by bibliometrics. Our comparative analysis revealed most of research in Japan on energy technologies are in engineering domain but less active in natural sciences, social sciences, and humanities. And we found that introduction of safety nuclear power technologies, carbon capture storage, hydrogen and rechargeable batteries will increase energy supply cost 2-3 times. In addition, we investigated necessary factors in social implementation of energy technology by a case study in an island. In future research, cost and value assessment and strategic research and development planning based on energy system design are necessary.

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  • Middle-temperature waste heat utilization by thermochemical energy storage material accompanied with high-thermal conductivity

    Grant number：24360404  2012.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Kato Yukitaka, RYU JUNICHI

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    Grant amount：\18590000 （ Direct Cost: \14300000 、 Indirect Cost：\4290000 ）

    Composite thermochemical energy storage material (EM) mixed with magnesium hydroxide (Mg(OH)2) and expanded graphite (EG) is developed. It was demonstrated by kinetic analysis by using a thermo-balance that EG has higher thermal conductivity, vapor diffusivity and reactivity than one of conventional Mg(OH)2. Tablet figure of EM was discussed as a suitable figure for practical packed bed reactor having heat-exchanging function. It was shown that mixing mass ratio of Mg(OH)2 : EG = 8 : 1 was the optimum mixing ratio in the stand point of reactivity per unit mass of material. The tablet EM was used for a packed bed experiment for demonstration of practical thermochemical energy storage performance of EM. The EM packed bed had higher heat storage amount and heat storage rate than one of conventional Mg(OH)2. Then, it was demonstrated from this study that thermochemical energy storage system using the EM material would have new possibility for middle-temperature heat utilization.

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  • Output power leveling of renewable energy systems by utilization of these energies for carbon dioxide reduction and carbon material regeneration

    Grant number：24656550  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    KATO Yukitaka, RYU Junichi

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    Grant amount：\4030000 （ Direct Cost: \3100000 、 Indirect Cost：\930000 ）

    Efficient carbon dioxide (CO2) reduction into carbon material is required to establish a smart enegy system using unstable electricity production from solar, wind and so fourth renewable energy systems. Direct electrolysis of CO2 was discussed experimentally. A disk-type solid oxide electrolysis cell (SOEC) was prepared and examined experimentally for application to the CO2 reduction process. The electrolysis of carbon dioxide was conducted at 800-900 degree C. A current density of 107.1 mA cm-2 was measured between the cathode and anode at 900 deg. C and at 2.52 V. The production rates of carbon monoxide ar a carbon material and oxygen were in agreement with the theoretical values determined using Faraday’s law. It was demonstrated that the SOEC methodology is useful for utilization of large amount and unstable renewable energies.

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  • Development of materials for chemical heat storage with Metal-salt/PCP composite

    Grant number：24656577  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    RYU Junichi, KATO Yukitaka

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    Grant amount：\4030000 （ Direct Cost: \3100000 、 Indirect Cost：\930000 ）

    Thermo-chemical energy storage system based on gas-solid reaction is widely investigated in view of utilization of industrial waste heat. However, this energy storage system is not in practical use due to its reactivity. In this work, metal-salt/PCP (Porous Cordinatiion Polymer) composites were prepared, and reactivity of these materials were investigated.
    It was shown that CaCl2/ZIF-8 composite has a good stability under cyclic reaction condition with dehydration and hydration.

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  • 自然エネルギー貯蔵を目指す新しいアンモニア吸蔵剤の研究

    Grant number：22560766  2010.10 - 2013.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    秋鹿 研一, 東 千秋, 加藤 之貴, 劉 醇一

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    Grant amount：\3900000 （ Direct Cost: \3000000 、 Indirect Cost：\900000 ）

    アンモニアはCa,Mgなどのハロゲン化合物と安定な錯塩を作る。塩化カルシウムにアンモニアが近づくと、窒素のローンペアーの強い配位力と塩素イオン同士の排斥力により、アンモニアのほうがカルシウムイオン近くに取り込まれる。結晶は2配位、8配位へと変化し、膨潤する。これをアンモニアの吸蔵材料として使うために、これらの錯形成反応の速度論データを取る装置をくみ上げ、データ取得を始めた。これらのデータは全くないこと、材料実用化のためにはあらゆる種類のデータを多くの技術者にとって貰う必要があるため、簡便な装置として、食品の水分量を測定する自動天秤を利用することを企画した。CaCl2にアンモニアを吸蔵させる際、水蒸気が共存すると正確なデータがとれないため、天秤を窒素気流雰囲気下へ設置した。CaCl2などの潮解性試料に対し、水分の吸収条件を検討した。吸収、脱離の速度に影響する因子は、アンモニア圧、(塩素、臭素混合であれば)陰イオンの種類と割合、結晶子あるいはクラスターサイズ、温度などである。
    CaCl2-CaBr2系は、常温、常圧でアンモニアを分離、貯蔵、放出でき、実用化の可能性がある。CaCl2は高い圧で、CaBr2は低い圧でアンモニアを吸収する。Cl/Bn比,1:1,の混合系は中間的構造を取るため、両者の中間的圧力(常圧付近)でアンモニアを吸蔵放出できる。これらについて、速度論データを取るための予備的実験を重ねたが、出発物質の水分制御が思ったより難しく、比較検討できるデータが十分に得られたとはいえない。従って、平衡に近い挙動のデータはこれまでのデータに加えることが出来たが、速度論的データについては再現性を得るに至っていない。サンプル調製法、速度データ取得装置については更なる検討を必要とした。
    実験データの整理法については理論的考察をさらに推し進めた。

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  • Efficiency improvement of high-temperature process by hybrid of chemical heat storage function

    Grant number：20360428  2008 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    KATO Yukitaka, RYU Junichi

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    Grant amount：\18850000 （ Direct Cost: \14500000 、 Indirect Cost：\4350000 ）

    Feasibility of hybrid thermal energy system which combines magnesium oxide/water chemical heat storage system and high-temperature process was discussed experimentally as an energy saving system. New heat storage composite material mixed with expanded graphite and magnesium hydroxide was demonstrated as high-performance material compared with conventional pure magnesium hydroxide. Pelletized material using the composite was developed also. The pellet was charged into a packed bed reactor of chemical heat storage system and measured its thermal performance. The chemical heat storage system using the composite was expected to contribute on load leveling and energy saving of a high-temperature process.

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  • 逆ビルドアップ法を用いた金属薄膜-金属多孔体複合型水素分離膜の開発

    Grant number：20656126  2008 - 2009

    日本学術振興会  科学研究費助成事業  挑戦的萌芽研究

    加藤 之貴, 劉 醇一

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    Grant amount：\3500000 （ Direct Cost: \3500000 ）

    申請者は水素分離型の非平衡型燃料改質をめざし、この反応技術の鍵となる水素分離膜に関して新技術を見出した。本研究では提案した逆ビルドアップ法による、1μmオーダーのパラジウム合金薄膜と多孔質金属支持体とを複合化した水素分離膜の実用開発を目指した。従来、試作品ごとに性能が一定でないため、実用的な製膜法を確立することを第1目的とした。平成20年度は製法を改良しピンホールフリーの水素透分離膜作成を実現した。平成21年度はこの手法で得られた水素分離膜の水素透過性能を評価し、さらに逆ビルドアップ法を用いた複合型水素分離膜の安定的な製法の確立を目指した。とくにピンホールフリーの製品歩留まりの向上が重要であった。申請者が提案した逆ビルドアップ法による新規複合水素分離膜の製法の要素段階の中で(1)パラジウム合金薄膜層スパッタ製膜工程、(2)支持メッキ層作成工程が安定した膜の作成に重要であった。工程(1)ではスパッタの電圧、電流値、スパッタ時間の最適化を検討した。工程(2)では従来はメッキ層が膜面の場所により不均一となり、膜の断裂破壊、ピンホールが発生し、安定した成膜が困難であったので、メッキ用の治具をさらなる改良を進め、膜全面に極力均一に電流が流れるよう、電気接点の多点化および、電力印加条件を検討した。その結果、大幅に歩留まりが向上し、本手法による目的の水素分離膜製作が実用的に可能であることを明らかにした。さらに得られた膜の水素透過性能値より、既往の合金単体薄膜に比べて経済性が高い可能性があることを示した。

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  • Halogenated Hydrocarbon Decomposition by Water DC Plasmas under Atmospheric Pressure

    Grant number：17310043  2005 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    WATANABE Takayuki, NAKANO Yoshio

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    Grant amount：\16380000 （ Direct Cost: \15600000 、 Indirect Cost：\780000 ）

    The purpose of this paper is to investigate decomposition process of hydrofluoroethylene (HFC-134a) by water plasmas. The water plasma was generated by DC arc discharge with a cathode of hafnium embedded into a copper rod and a nozzle-type copper anode. The advantage of the water plasma torch is generation of 100%-water plasma by DC discharge. The distinctive steam generation leads to the portable light-weight plasma generation system that does not require the gas supply unit, as well as the high energy efficiency owing to the nonnecessity of the additional water-cooling.
    A feasibility of HFC destruction was demonstrated by stable DC 100%-water plasma generation under atmospheric pressure. Decomposition of HFC-134a produces CO, CO_2. and H_2 in the off-gas, and HF which can be recovered in the solution of the neutralization vessel. The use of water as plasma supporting gas, rather than oxygen, improves the destruction performance, reducing the ODS residual level with eliminating CF_4 production. The TOC as the by-products after the decomposition can be negligible in the solution. The decomposition efficiency of 99.9% can be obtained up to 0.43 mmol/kJ of the ratio of HFC-134a feed rate to the arc power, hence the maximum feed rate was estimated to be 160 g/h at 1 kW of the arc power. Water plasma system for hazardous waste treatments is more effective than air plasma process and the conventional incineration process.
    Thermal plasmas such as steam would provide more capability for waste treatments, if thermal plasmas are utilized effectively as chemically reactive gas. Application of plasma systems for waste treatments is expected to downsize the system, reduce hazardous substances in the off-gas, finally low cost of waste treatments.

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  • 水素製造

    2003 - 2005

    共同研究 

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  • hydrogen production

    2003 - 2005

    Cooperative Research 

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  • Study on a new gas turbine cycle utilizing peculiarity of intermolecule force at the critical point.

    Grant number：14208059  2002 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    KATO Yasuyoshi, YOSHIZAWA Yoshio, KATO Yukitaka, NITAWAKI Takesi

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    Grant amount：\54340000 （ Direct Cost: \41800000 、 Indirect Cost：\12540000 ）

    1)A new gas turbine cycle and its application toreactors
    A supercritical carbon dioxide (CO_2) gas turbine reactor with a partial pre-cooling cycle attains 4 to 11% higher cycle efficiency compared with a helium(He) gas turbine cycle, providing comparable cycle efficiencies of 45.8% at medium temperature of 650℃ and pressure of 7 MPa with a typical He gas turbine reactor of GT-MHR (47.7%) at high temperature of 850℃. This higher efficiency is ascribed to : reduced compression work around the critical point of CO_2 ; and consideration of variation in CO_2 specific heat at constant pressure, Cp, with pressure and temperature into cycle configuration. Lowering temperature to 650℃ provides flexibility in choosing materials and eases maintenance through the lower diffusion leak rate of fission products from coated particle fuel by about two orders of magnitude. At medium temperature of 650℃, less expensive corrosion resistant materials such as type 316 stainless steel are applicable and their performance in CO_2 have been proven during extensive operation in AGRs. In the previous study, the CO_2 cycle gas turbomachinery weight was estimated to be about one-fifth compared with He cycles. The proposed medium temperature CO_2 gas turbine reactor is expected to be an alternative solution to current high temperature He gas turbine reactors.
    A supercritical CO_2 gas turbine fast reactor(FR) attains slightly higher cycle efficiencies of 41% than conventional sodium(Na) cooled steam turbine cycle FRs(40%) at the same temperature of 530℃. Use of CO_2 cycle instead of steam cycle for the power generation system could remove safety problems due to hazardous water-Na reaction in the event of Na leakage. As the result, extra intermediate cooling loops relative to light water reactors(LWRs) could be eliminated which are necessary to the conventional FRs. This results in reduction of capital cost of the FRs. Therefore, supercritical CO_2 gas turbine FR offers an alternative to sodium-cooled FRs, eliminating problems related to safety and construction cost.
    2)Supercritical CO_2 experimental loop and test result of HEATRIC's PCHE
    In a gas turbine cycle, a recuperator is one of the most important components since its thermal-hydraulic performance contributes to plant efficiency improvement or one percent change of its temperature effectiveness leads to 0.6 percent change of the cycle efficiency. In addition, its compactification results in plant cost reduction. A promising heat exchanger to serve these purposes is the Printed Circuit Heat Exchanger(PCHE), developed by HEATRIC (UK). A supercritical CO_2 experimental loop was constructed to test thermal hydraulic characteristics of the PCHE and develop a new design of the PCHE. An experimental loop was built to test thermal-hydraulic performance of the PCHE recuperators for the supercritical CO_2 gas turbine cycle. A supercritical CO_2 experimental loop consists of low pressure tank, compressor, oil separator, heaters, heat exchanger, PCHE test section, coolers, pressure-regulating valves, etc. The loop is able to test the PCHE with heat exchange duty of 3 kW under the operating condition xip to 350℃ and 13 MPa.
    A3-kW PCHE was purchased from HEATRIC, UK. The PCHE has core dimensions of 71×76×896 mm and a dry mass of 40 kg. The hot and cold sides has 144 and 66 flow channels, respectively. The PCHE has a double banking configuration with 12 hot plates and 6 cold plates. The flow channel may be described as zigzag lines of semicircle cross sections with 1.88 mm diameter. The flow channel pitch is 2.4 mm.
    The HEATRIC's PCHE was tested at various inlet temperatures and pressures of 280-300℃ and 2.2-5.2 MPa in the hot side ; and 90-108℃ and 6.5-10.0 MPa in the cold side. The mass flow rate was 40-80 kg/h. The Reynolds numbers in the PCHE were about 2400-6000 and 5000-13000 in the hot side and cold side respectively. The overall heat transfer coefficients were 300 to 700 W/(m^2K), and the local heat transfer coefficients were about 500-1400 W/(m^2K) in the hot side channel. Maximum heat exchanger effectiveness is higher than 99%. Empirical correlations for the friction factor, the overall heat transfer coefficient, and the local heat transfer coefficient are proposed as functions of the average Reynolds number.
    The HEATRIC's PCHE has provided excellent heat transfer performance as a recuperator for supercritical CO_2 cycle reactors but rather high pressure drop.
    3)New design of PCHE
    Three-dimensional computer fluid dynamic (3-D CFD) simulations using the FLUENT code have revealed that the high pressure drop of the HEATRIC's PCHE is ascribed to formation of eddies and swirls around the zigzag corners. Extensive 3-D CFD simulations were done to obtain a new flow channel configuration which reduces pressure drop through eliminating eddies and swirls. The new flow channel configuration has discontinuous fins with an S-shape, similar to a sine curve, in contrast to the continuous zigzag configuration of HEATRIC. Simulation calculations were done changing the fin shape and angle parametrically to obtain an optimal flow channel configuration for the recuperator of the supercritical CO_2 cycle, considering pressure drop and heat transfer performance.
    The new configuration has one-fifth of the pressure drop reference to the zigzag configuration with equal heat transfer performance. The pressure drop reduction is ascribed a superior uniform flow velocity profile in the flow area and elimination of eddies and swirls that occur around bend corners of zigzag flow channels in the HEATRIC's PCHE.

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  • Development of non-equilibrium plate-type reactor with hydrogen separation, membrane

    Grant number：14380224  2002 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    KATO Yukitaka, YOSHIZWA Yoshio, KAMEYAMA Hideo, NIKAI Isao

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    Grant amount：\15000000 （ Direct Cost: \15000000 ）

    Anew structure type fuel reformer proposed by investigator was developed in this research. The reactor consists of stuck of units having plates for fuel reforming catalyst, hydrogen membrane and hydrogen recovery. The research discussed for the demonstration of the fuel reforming concept experimentally, and also a new type hydrogen membrane having high performance.
    The proposed reformer is different from conventional packed bed type reformer, and removes produced hydrogen from reaction surface of the plate catalyst via a hydrogen permeation membrane. The plate type reformer has merits of high-hydrogen productivity, reduction of reforming temperature by using the hydrogen membrane, and also homogeneous temperature distribution in reforming catalyst plate, compactness of the rector. The research approaches the demonstration from three stand points of plate-type reactor reforming experiment, numerical analysis of the reformer and a hydrogen permeation membrane development.
    Single unit of reformer having a reforming catalyst, hydrogen permeation membrane and hydrogen recovery channel was prepared for the reforming demonstration. Methanol and methane were used reforming fuel. Reforming rate, hydrogen permeation rate, temperature distribution were measured. In the methanol reforming, reforming temperature reduction of 20-50 degree C. and hydrogen yield increase of 15 % was demonstrated. In the methanol reforming, reforming temperatures were reduced from 700-800 deg. C to 450-600 deg. C. The hydrogen yield was increased from 62 % to 80 % at 620 deg. C., and also from 80 % to 94 % at 480 deg. C. The reforming performance showed the possibility of the reformer. New method of hydrogen permeation membrane was examined in this research. Palladium (Pd) alloys is conventional material for the membrane. However, it is quite expensive like gold, and is required to be reduced usage amount for the membrane. Generally, the Pd membrane needs a thickness more than 20 micro m to keep the hardness. In this study, a new Pd alloy membrane having thickness of less 5 micro m, which was supported by another metal material membrane, was developed. The developed membrane performance for hydrogen permeation was demonstrated experimentally. The membrane has higher hydrogen permeability per Pd alloy mass compared with conventional Pd alloy membrane was demonstrated. This research demonstrated the possibility of the proposed plate-type reformer.

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  • Study on the combustion mechanism of molten sodium

    Grant number：13450082  2001 - 2003

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    YOSHIZAWA Yoshio, KATO Yukitaka

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    Grant amount：\14400000 （ Direct Cost: \14400000 ）

    The combustion of melting sodium is difficult and different from flame phenomenon widely known in the conventional basic combustion science because product is a solid phase. (1) There appears suction on the reaction zone. (2) The process of diffusion and removal of the solid phase product from the reaction zone is complicated. (3) The radiation heat transfer by the solid phase product has an important effect. In this study, the combustion of sodium is clarified from the viewpoint of the basic combustion science. The behavior of the radiation heat transfer by floating solid phase product (aerosol) was examined in detail and the effect of the radiation heat transfer by aerosol is discussed widely. The radiation heat transfer model based on the transport equation as an absorbing emitting medium was used. The followings were clarified by the numerical analysis based on above discussions ; surface combustion rate and flame height from the sodium pool, the effects of melting sodium temperature, atmosphere temperature, atmosphere oxygen concentration and emissivity of sodium surface. A sophisticate experimental sodium combustor was made. It is substantially a counter flow diffusion flame burner. The burner is surrounded with a pair of honeycomb which composes a radiation feedback burner. The premixed flame of the methane is formed on the honeycomb surface and the space between honeycomb is kept as a controlled high radiation field. Counter flow diffusion flames on the melting sodium pool surface were observed. The results agreed approximately with the analysis. In addition, an axi-symmetric flow field near the stagnation point of the counter flow was analyzed including detailed examination of the aerosol. The phenomena was clarified by comparing with the experimental results.

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  • ゼロエミッション燃料電池システム

    2000 - 2002

    その他の研究制度 

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    Grant type：Competitive

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  • Zero-emission fuel cell system

    2000 - 2002

    The Other Research Programs 

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    Grant type：Competitive

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  • Chemical Heat Storage System for micro-Cogeneration System

    Grant number：12680499  2000 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    KATA Yukitaka

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    Grant amount：\4000000 （ Direct Cost: \4000000 ）

    A chemical heat pump is examined experimentally as a chemical heat storage system in order to evaluate the contribution of the chemical heat pump to decentralized micro-cogeneration system. A new system that combines cogeneration with a chemical heat pump that uses a magnesium oxide/water reaction is proposed, and the feasibility of the combined system is discussed. A packed bed reactor of a magnesium oxide/water chemical heat pump was examined experimentally under various operation conditions. Thermal performance of the heat pump was analyzed using the experimental results. The heat pump containing the reactor is expected to enhance the energy utilization efficiency of the micro-cogeneration system by storing and utilizing surplus exhaust heat generated by the cogeneration system

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  • Decentralized enegy supply system

    1998 - 2002

    The Other Research Programs 

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    Grant type：Competitive

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  • 地域熱供給

    1998 - 2002

    その他の研究制度 

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    Grant type：Competitive

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  • 高温ケミカルヒートポンプと熱電変換デバイスを複合した熱電併給システムの開発

    Grant number：09780454  1997 - 1998

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    加藤 之貴

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    Grant amount：\1200000 （ Direct Cost: \1200000 ）

    本研究では酸化カルシウム/酸化鉛/二酸化炭素反応系を用いた熱駆動ケミカルヒートポンプに熱電変換デバイスを結合した可動部のないエネルギー変換システムの開発を目的としている。熱天秤を用いた従来の基礎的研究により、高温側の酸化カルシウム/二酸化炭素反応系も低温側の酸化鉛/二酸化炭素反応系も基本的な反応特性は把握されているので、本年度は、高温反応系の実証を中心に検討した。そこで、反応試料も試薬ではなく、実用的なものとして寒水石(98%CaCO_3)を用いた。本研究で製作したケミカルヒートポンプ試験機にこの試料600gを充てんして炭酸化反応圧力3気圧で実験した結果、電気ヒ-タにより900℃で蓄熱し、980℃に昇温して出力できることを確認した。さらに、ケミカルヒートポンプで重要な繰り返し反応耐久性の実験を行い、初期数サイクルで反応活性の低下がみられたが、その後は初期活性の30%程度の活性が持続されることを確認した。本ケミカルヒートポンプ試験機で炭酸化反応の圧力を3気圧より高くすることによりさらに高い温度における熱出力も可能であるが、その場合には試料粉体内部の伝熱の改善を図らないとホットスポットが形成され、試料が焼結して反応活性が急激に低下することが明らかになった。
    なお、年度途中で海外出張が決まったため熱電変換の実験はできなかったが、出力温度レベルが確認されたので、この温度レベルに対応する熱電変換デバイスを選定して研究を継続する予定である。

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  • JOINT STUDY ON THE SOLAR-DRIVEN CHEMICAL HEAT PUMP

    Grant number：06044074  1994 - 1995

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for international Scientific Research

    KAMEYAMA Hideo, DOI Takuya, FUNK James E, BLOCK David L, TANAKA Tadayosi, KATO Yukitaka, SAITO Yasukazu, YAMAMOTO Kyoko, MURADOV Nazim, T-RAISSI Ali

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    Grant amount：\12400000 （ Direct Cost: \12400000 ）

    This is a project for a international cooperative research program between Japan and USA financially supported by the Ministry of Education, Science, Sports and Culture in Japan. This project was two years program from 1994 fiscal year to develop a process to storage the low-level heat under 80 ゜C and to upgrade it to the highlevel heat around 200 ゜C using solar thermal energy as the primary energy input. The major objective of the program was to investigate a process feasibility of a solar-driven chemical heat pump, which was combined a chemical heat pump system being developed in Japan with solar panel and process interface technologies being developed in USA.This project has combined many isolated research activites conducted in the two countries and made effective use of them by cooperative research and sharing of research results. The process proposed in this project has also a big potential for decreasing CO_2 emission into the environment from industries by the energy saving caused by application to the efficient utilization of huge amounts of low-level heat exhausted from industries. Many technological problems must be solved to improve the thermal efficiency and to apply this system for effective utilization of solar energy. This project was planed to build on the following works already done in the USA and Japan and to make new technologies to overcome a wall of low thermal efficiency and to make realize new type of chemical heat pump using solar energy.
    1. Solar utilization technologies of solar receivers and control being developed in the USA.
    2. Chemical heat pump technologies being developed in Japan.
    3. Technology of plate-type catalyst with high thermal conductivity being developed in Japan.
    4. New type of unit operations such as plat type catalytic reactor and internal heat integrated distilllation column.
    5. Energy and Exergy analysis of chemical process by using ASPEN PLUS process simulator installed in each research laboratories.
    6. New process designs being discussed between USA and Japan.
    As a conclusion, several key technologies was recommended to be introduced for improving thermal efficiency of this chemical heat pump system.

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  • 社会受容性を備えた高温型ケミカルヒートポンプの開発

    Grant number：06780404  1994

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    加藤 之貴

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    Grant amount：\900000 （ Direct Cost: \900000 ）

    本研究では二酸化炭素を反応媒体にしたケミカルヒートポンプの可能性を検討した。二酸化炭素は1000K以下の高温域で安定な物質であり、また地球環境に対しても優しく、社会受容性を備えた反応物である。そこで二酸化炭素を反応媒体にした反応系の検討を行った。その結果、無機酸化物系の炭酸化反応が有望であった。酸化カルシウム/二酸化炭素反応系は従来より、反応活性が高いことが知られており、ヒートポンプを完成するには対応するもう一つの二酸化炭素反応系を決定する必要があった。本研究では酸化カルシウム/酸化マグネシウム/二酸化炭素反応系を候補にあげ主に検討し、その実用性を検討した。一方で種々の二酸化炭素反応系に関しても検討を行いヒートポンプとしての可能性を速度論的に検討した。
    実験では積分型反応器の設計条件を得るために、熱天秤を用いて微分反応速度を測定し、反応速度論的検討を行った。反応器は流通型であり、二酸化炭素と不活性ガス成分として窒素ガスを混合したガスを反応に用いた、各流量はマスフローメーターにより調節し、所定の反応分圧を実現した、反応温度は電気炉にて輻射加熱し所定温度を保った。反応物質としてはアルカリ土類金属酸化物および酸化銅、酸化コバルト、酸化亜鉛、酸化鉛に関してそれぞれ二酸化炭素反応特性を検討した。
    その結果酸化マグネシウム/二酸化炭素系及び酸化鉛/炭酸化反応系が酸化カルシウム系に対する反応系として有望であった。これれらの系についてはさらに検討を進め反応動力学的検討を行った。また、繰り返し反応対する反応耐久性を検討した。繰り返し反応性に関しては酸化鉛が優れていることが明らかになった。次に積分反応器の制作を行い。反応時の反応度、熱出力の同時測定が可能とした。この反応器によりヒートポンプとしての基礎的な反応性能を検討することが可能となった。

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  • ケミカルヒートポンプに関する研究

    1993 - 2002

    官民連帯共同研究 

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    Grant type：Competitive

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  • Chemical Heat Pump.

    1993 - 2002

    Public/Private Cooperative Joint Researches 

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    Grant type：Competitive

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  • 非平衡型燃料改質器の開発

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    Grant type：Competitive

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  • Development of high-performance reactant for a magnesium oxide chemical heat pump

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    Grant type：Competitive

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  • Demonstration of a magnesium/oxide chemical heat pump

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    Grant type：Competitive

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  • Development of non-equilibrium type fuel reformer

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    Grant type：Competitive

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  • Carbon dioxide zero-emission nergy system for fuel cell automobile

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    Grant type：Competitive

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  • 酸化マグネシウム／水系ケミカルヒートポンプ高性能反応材料の開発

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    Grant type：Competitive

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  • 二酸化炭素ゼロエミッション型移動体エネルギーシステム

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    Grant type：Competitive

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  • 酸化マグネシウム／水系ケミカルヒートポンプ実証試験

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    Grant type：Competitive

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