Updated on 2025/07/31

写真a

 
NAKAGAKI TAKAO
 
Organization
Institute of Integrated Research Specially Appointed Professor
Title
Specially Appointed Professor
External link

Degree

  • Dr.Eng. ( Waseda University )

Research Interests

  • Chemical recuperation, Exergy, CCS

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Catalyst and resource chemical process

  • Nanotechnology/Materials / Energy chemistry

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Thermal engineering

Education

  • Waseda University   Graduate School, Division of Engineering   Mechanical Engineering

    - 1992

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Professional Memberships

Committee Memberships

  •   日本機械学会 動力エネルギー部門 企画委員 2014年～  

    2014   

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  •   日本機械学会 関東支部 商議員 2014年～  

    2014   

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  •   化学工学会 次世代エネルギー社会検討委員会 副委員長 201３年～  

    2013   

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  •   日本機械学会 動力エネルギー部門 広報委員幹事 2012年～  

    2012   

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  • 日本機械学会   動力エネルギーシステム部門広報委員，企画委員，関東支部商議員  

    2012   

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    Committee type：Academic society

    日本機械学会

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  •   日本機械学会 発電用規格専門委員会 火力専門委員会 委員 ～2011年  

    2011   

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  • 化学工学会   エネルギー部会 新エネルギーシステム分科会代表  

    2011   

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    Committee type：Academic society

    化学工学会

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  •   化学工学会 エネルギー部会 新エネルギー・エネルギーシステム分科会長 2011年～  

    2011   

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  •   化学工学会 エネルギー部会幹事 2010年～  

    2010   

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  •   日本技術士会 機械部会幹事 2009年～2013年  

    2009 - 2013   

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  •   日本機械学会 動力エネルギー部門 シンポジウム企画幹事・委員長 2009～2010年  

    2009 - 2010   

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  • 日本技術士会   機械部会幹事  

    2008 - 2013   

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    Committee type：Academic society

    日本技術士会

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  •   日本機械学会 論文査読委員 2007年～  

    2007   

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Papers

  • Effect of solidification and cooling methods on the efficacy of slag as a feedstock for CO2 mineralization

    Corey Adam Myers, Takao Nakagaki

    ISIJ International   58 ( 2 )   211 - 219   2018

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Iron and Steel Institute of Japan  

    DOI： 10.2355/isijinternational.ISIJINT-2017-478

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  • Distributed Cogeneration of Power and Heat within an Energy Management Strategy for Mitigating Fossil Fuel Consumption Reviewed

    Yasunori Kikuchi, Yuichiro Kanematsu, Ryuichi Sato, Takao Nakagaki

    JOURNAL OF INDUSTRIAL ECOLOGY   20 ( 2 )   289 - 303   2016.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1111/jiec.12374

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  • Electric power generation and its backend technology

    Takao Nakagaki

    Energy Technology Roadmaps of Japan: Future Energy Systems Based on Feasible Technologies Beyond 2030   236 - 238   2016.1

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    Language：English   Publisher：Springer Japan  

    DOI： 10.1007/978-4-431-55951-1

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  • Thermal power generation

    Takao Nakagaki

    Energy Technology Roadmaps of Japan: Future Energy Systems Based on Feasible Technologies Beyond 2030   239 - 255   2016.1

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    Language：English   Publishing type：Part of collection (book)   Publisher：Springer Japan  

    DOI： 10.1007/978-4-431-55951-1_14

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  • Energy technology roadmaps of Japan: Future energy systems based on feasible technologies beyond 2030

    Kato, Yukitaka, Koyama, Michihisa, Fukushima, Yasuhiro, Nakagaki, Takao

    Energy Technology Roadmaps of Japan: Future Energy Systems Based on Feasible Technologies Beyond 2030   1 - 573   2016.1

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    © Springer Japan 2016.This book, edited by members of the Committee of Future Energy and Social Systems, The Society of Chemical Engineers, Japan, describes energy technology roadmaps for Japan post-Fukushima. In this work, energy technology experts show quantitatively the advantages and disadvantages of major energy technologies with which they are involved, in a unified chapter structure with figures illustrating the technology development perspectives. The future energy vision for Japan together with the pathway is quantitatively discussed, explicitly considering the contributions of individual energy technology by referring to the technology roadmaps. The pathways for future energy vision thus derived will be useful not only for all energy researchers but also for graduate students in the field to grasp the potential of the technologies and future energy system of Japan.

    DOI： 10.1007/978-4-431-55951-1

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  • Material and heat flow analysis in thermal energy storage and transport system utilizing unused heat from bagasse boiler

    FUJII Shoma, KANEMATSU Yuichiro, KIKUCHI Yasunori, NAKAGAKI Takao

    Mechanical Engineering Journal   3 ( 5 )   16 - 00334-16-00334   2016

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    <p>Sugar production is the main industry in Tanegashima, Japan. Whilst the sugar mill recycles sugarcane bagasse as a fuel, it concurrently generates large amounts of unused 200 °C heat during operation. Raw sugar is shipped to a refinery in Osaka for the final stages of production, which uses a city gas boiler to continuously generate a large quantity of 150 °C heat. However, factories in Tanegashima need a continuous supply of process steam at temperatures of up to 120 °C. To resolve this spatial and seasonal mismatch of heat, we propose a thermal energy storage and transport system using a zeolite adsorption/regeneration cycle. A process flow diagram of the sugar mill has been developed, and the amount of available heat, the potential storage capacity, and the transportable amount of heat have been calculated. Two scenarios were analyzed, in which the stored heat is shipped to Osaka, or used on the island. This was achieved by calculating the rate-based storage capacity of zeolite, based upon an adsorption and regeneration test. The transportable quantity of zeolite determines the feasibility of using waste heat. In the first case, transport of heat to the sugar refinery in Osaka has little possibility of being implemented. In the second case, transport of heat to a liquor factory in Tanegashima can potentially reduce its usage of heavy oil by 83 %, equivalent to 33 kL/year.</p>

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  • ICOPE-15-1132 Transport system of unused heat from bagasse-boiler by using chemical heat storage in sugar milling and refinery process

    FUJII Shoma, SATOH Ryuichi, KANEMATSU Yuichiro, KIKUCHI Yasunori, NAKAGAKI Takao

    Proceedings of the International Conference on Power Engineering : ICOPE   2015 ( 12 )   "ICOPE - 15-1132-1"-"ICOPE-15-1132-11"   2015.11

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    Language：English   Publisher：The Japan Society of Mechanical Engineers  

    In Tanegashima, the sugar mill, which is the main industry recycles sugarcane bagasse as a fuel but concurrently generates the massive amounts of unused heat at 200℃. Raw sugar is shipped to a sugar-refinery in Osaka where the sugar products are produced. The sugar-refinery uses a city gas boiler to generate a massive quantity of heat at 150℃ for refining. In order to resolve this spatial and temporal mismatch, we propose the application of chemical heat storage. Steam adsorption and desorption cycle of zeolite was employed in this work. Process flow diagram of the sugar mill was developed and potential heat storage capacity, the transport capacity for zeolite and reduction rates of city gas consumption at Osaka were calculated. From the results, it was revealed that the transport capacity for zeolite was restricting factor in the heat storage and transport system. In fact, heat storage capacity depends on desorption amount and regeneration rates, so potential heat storage capacity, the transport capacity for zeolite and fuel reduction rates at Osaka were recalculated using the results of the adsorption/regeneration tests.

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  • ICOPE-15-1038 Quantitative Evaluation of CO_2 Emission Reduction and Energy Conservation in Iron Making Process by Using In-plant CO Recycling System

    SUZUKI Katsuki, NAKAGAKI Takao, SUMI Ikuhiko, ISHII Jun

    Proceedings of the International Conference on Power Engineering : ICOPE   2015 ( 12 )   "ICOPE - 15-1038-1"-"ICOPE-15-1038-8"   2015.11

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    Language：English   Publisher：The Japan Society of Mechanical Engineers  

    Japanese iron and steel manufacturing industries import a significant amount expensive coking coal (coke); reduction of coke consumption is a great challenge for the industry. In this paper, we propose an in-plant CO recycling system which supplements coke with gaseous CO as a reducing agent in the blast furnace. Process flow diagrams including a blast furnace with CO recycling, coke oven, and hot blast stove were built in Aspen Plus and the effect of CO recycling on coal conservation, exergy efficiency, and CO_2 emission were quantitatively evaluated. In the blast furnace the input exergy, effective exergy ratio, overall CO_2 emissions, and the input coke decreased as the degree of CO circulation was increased. The recirculated CO gas was separated from the Blast Furnace Gas (BFG), the coke oven gas, and the converter gas. The separation and recycling of CO into the blast furnace resulted in the decrease of input coke, and input exergy by 13.0% and 10.3%, respectively. On the other hand, overall CO_2 emissions increased by 2.6%

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  • Quantitative Evaluation of CO2 Emission Reduction of Active Carbon Recycling Energy System for Ironmaking by Modeling with Aspen Plus Reviewed

    Katsuki Suzuki, Kentaro Hayashi, Kohei Kuribara, Takao Nakagaki, Seiji Kasahara

    ISIJ INTERNATIONAL   55 ( 2 )   340 - 347   2015

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2355/isijinternational.55.340

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  • Process Evaluation of Use of High Temperature Gas-cooled Reactors to an Ironmaking System Based on Active Carbon Recycling Energy System

    Kentaro Hayashi, Seiji Kasahara, Kouhei Kuribara, Takao Nakagaki, Xing L. Yan, Yoshiyuki Inagaki, Masuro Ogawa

    ISIJ INTERNATIONAL   55 ( 2 )   348 - 358   2015

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2355/isijintemational.55.348

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  • Process Evaluation of Use of High Temperature Gas-cooled Reactors to an Ironmaking System Based on Active Carbon Recycling Energy System Reviewed

    Kentaro Hayashi, Seiji Kasahara, Kouhei Kuribara, Takao Nakagaki, Xing L. Yan, Yoshiyuki Inagaki, Masuro Ogawa

    ISIJ INTERNATIONAL   55 ( 2 )   348 - 358   2015

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2355/isijintemational.55.348

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  • Quantitative Evaluation of CO2 Emission Reduction of Active Carbon Recycling Energy System for Ironmaking by Modeling with Aspen Plus Reviewed

    Katsuki Suzuki, Kentaro Hayashi, Kohei Kuribara, Takao Nakagaki, Seiji Kasahara

    ISIJ INTERNATIONAL   55 ( 2 )   340 - 347   2015

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2355/isijinternational.55.340

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  • Numerical Analysis for CO2 Absorption and Regeneration Behavior in Porous Solid Sorbent by Modified Unreacted-Core Model Reviewed

    Takahiro Tanaka, Eiki Tabata, Takao Nakagaki, Mamoru Mizunuma, Yasuko Y. Maruo

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   47 ( 7 )   561 - 568   2014.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1252/jcej.13we310

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  • Present Status and Points of Discussion for Future Energy Systems in Japan from the Aspects of Technology Options Reviewed

    Michihisa Koyama, Seiichiro Kimura, Yasunori Kikuchi, Takao Nakagaki, Kenshi Itaoka

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   47 ( 7 )   499 - 513   2014.7

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  • Present Status and Points of Discussion for Future Energy Systems in Japan from the Aspects of Technology Options

    Michihisa Koyama, Seiichiro Kimura, Yasunori Kikuchi, Takao Nakagaki, Kenshi Itaoka

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   47 ( 7 )   499 - 513   2014.7

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  • Numerical Analysis for CO2 Absorption and Regeneration Behavior in Porous Solid Sorbent by Modified Unreacted-Core Model Reviewed

    Tanaka Takahiro, Tabata Eiki, Nakagaki Takao, Mizunuma Mamoru, Maruo Yasuko Y

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   47 ( 7 )   561 - 568   2014

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    Lithium ortho-silicate (Li4SiO4) is a suitable solid sorbent for capturing CO2 from solid oxide fuel cells. CO2 absorption reactors packed with porous-solid spherical pellets of Li4SiO4 show unsteady temperature distribution and capture ratio behavior owing to the unsteady CO2 absorption rate and highly exothermic process. The CO2 absorption rate of this sorbent reportedly depends on temperature, CO2 concentration, and CO2 accumulation, expressed as the weight change of the sorbent. Nevertheless, discussions of detailed mechanisms of CO2 absorption by this sorbent are rare. In this study, the modified unreacted core model is proposed to explain the mechanism of CO2 absorption of a porous-solid spherical pellet, and numerical analysis was conducted to simulate the unsteady behavior of the sorbent. Important properties such as the reaction rate constant, the gas film mass transfer coefficient, and the coefficient for effective diffusion through the product layers were empirically derived using thermogravimetry and a diluted packed-bed reactor. Numerical analysis by applying these parameters to the modified unreacted core model adequately explained the complicated CO2 absorption and regeneration behaviors.

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  • High-efficiency Power Generation System improved by Exhaust Heat Recovery using Chemical Reaction—Innovative Approach to Natural Gas Utilization by Chemical Recuperation

    NAKAGAKI Takao

    IEEJ Transactions on Sensors and Micromachines   134 ( 3 )   156 - 160   2014

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    Language：Japanese  

    This article has no abstract.

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  • 次世代エネルギー社会検討委員会の活動報告「プロセス安全管理」第1回研究会を平成25年6月10日に開催

    中垣 隆雄

    化学工学 = Chemical engineering   77 ( 10 )   2013.10

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  • Performance evaluation of solid oxide fuel cell for exergy recuperation of exhaust heat by electrochemical partial oxidation

    Takayuki Ozeki, Takao Nakagaki

    Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B   79 ( 804 )   1583 - 1593   2013

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1299/kikaib.79.1583

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  • 化学再生発電システムによる燃料削減効果

    OHM   99 ( 6 )   4 - 5   2012.6

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  • Follow-Up Report about "Urgent Proposal to Counter Energy Crisis in East Japan Caused by the Tohoku Earthquake"

    KIKUCHI Yasunori, KAJIKAWA Yuya, KATO Yukitaka, KUBOTA Mitsuhiro, NAKAGAKI Takao, FUKUSHIMA Yasuhiro, MATSUKATA Masahiko, KOYAMA Michihisa

    76 ( 3 )   154 - 157   2012.3

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  • J081052 Measurement of internal pressure distribution of PEFC using temperature-sensitive paint

    TSUKADA Daisuke, NAKAGAKI Takao, CHO Daisuke

    Mechanical Engineering Congress, Japan   2011   "J081052 - 1"-"J081052-3"   2011.9

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    Language：English   Publisher：The Japan Society of Mechanical Engineers  

    Decreasing the contact resistance between components with high sensitivity of the contact pressure in the Polymer Electrolyte Fuel Cell improves the cell performance accompanied with the complex interaction between the transport phenomenon of heat, reactants and electrons, especially, under the high current density operation of Fuel Cell Vehicles. This work aims to establish the method of measuring pressure distribution in the cell by quantifying the discoloration level of irreversible temperature-sensitive paint which also has pressure sensitivity. Three paint samples, which discolor at 95, 100 and 105 °C, were prepared in uniform thickness and pressurized during the fixed time under the condition of constant temperature and humidity. The discoloration level was quantified with the peak value of the brightness spectrum which is obtained by image processing of the sample picture of the microscope. A linear correlation between pressure and discoloration level was obtained in some paints, and at 70°C and relative humidity of 70 %, one of paints could quantify pressure range from 0.5 to 2.5 MPa and one of the other paints could quantify the lower pressure range.

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  • J081054 Study on the electron transport resistance in gas diffusion layer of polymer electrolyte fuel cell

    KIM Jyu seyi, NAKAGAK Takao, CHO Daisuke

    Mechanical Engineering Congress, Japan   2011   "J081054 - 1"-"J081054-5"   2011.9

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    Language：English   Publisher：The Japan Society of Mechanical Engineers  

    The cost of PEFC (Polymer Electrolyte Fuel Cell) vehicle should be reduced to spread widely, and to realize cost reduction, high current density operation under the condition of high temperature and low humidification is required. It is important for reduction of ohmic loss at the severe operating conditions to evaluate properly electron transport phenomena derived electric resistance of cell components such as GDL (Gas Diffusion Layer). This research approached to explain difference in electrical resistances among commercially available GDLs made of fabricated carbon fibers from both macroscopic and microscopic viewpoints, which are bulk density of GDLs and graphitization of carbon fibers and binders measured by Raman spectroscopy. The results of measurements indicated that electrical resistivity significantly correlated with both characteristics.

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  • Proposed HONEBUTO Energy Technologies (1) : Social System and Energy

    NAKAGAKI Takao

    Chemical engineering of Japan   75 ( 3 )   126 - 129   2011.3

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  • Enhanced hydrogen production process from coal integrated with CO2 separation using dual chemical looping

    Nakagaki, e

    Energy Procedia   Vol.4   324 - 332   2011.1

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  • Separation Analysis of Bulk and Contact Resistance of MEA Compornents

    Kotaka Toshikazu, Takada Shinichiro, Sakai Masanobu, Fukuyama Yosuke, Aoki Osamu, Tabuchi Yuichiro, Kubo Norio, Sakai Hiromasa, Nakagaki Takao

    Proceedings of National Heat Transfer Symposium   2011 ( 0 )   266 - 266   2011

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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   2011 ( 0 )   10 - 10   2011

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  • Measurement of water vapor effective diffusion coefficient in gas diffusion layer of PEFC

    Sakai Ryuji, Kondo Yuuki, Katsuta Masafumi, Nakagaki Takao, Kubo Norio, Aoki Osamu

    Proceedings of National Heat Transfer Symposium   2011 ( 0 )   276 - 276   2011

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  • Tackling Power Outages in Japan: The Earthquake Compels a Swift Transformation of the Power Supply Reviewed

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

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN   44 ( 6 )   365 - 369   2011

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  • 化学反応による廃熱のエクセルギー増進

    中垣隆雄

    クリーンエネルギー   第19巻 ( 6号 )   17 - 21   2010.6

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  • 電気化学的部分酸化による排熱のエクセルギー再生に関する調査研究

    尾関高行, 中垣隆雄

    日本機械学会論文集   第76巻 ( 第763号B編 )   44 - 46   2010.3

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  • Feasibility Study on Exergy Recuperation of Exhaust Heat Using Electrochemical Partial Oxidation(<Special Issue>The 14th National Symposium on Power and Energy System)

    OZEKI Takayuki, NAKAGAKI Takao

    Transactions of the Japan Society of Mechanical Engineers. B   76 ( 763 )   406 - 408   2010.3

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    Electrochemical partial oxidation (EPOx) of methane can convert exhaust heat into electricity as much as difference between change of Gibbs free energy and change of enthalpy. In this paper, we considered 30kW power generation system combined Micro Gas Turbine and the Partial Oxdation Solid Oxide Fuel Cell using Gadolinium Doped Ceria as the electrolyte that has high oxide ion conductivity below 600℃. The cylindrical-shaped POSOFC is operated at 572℃ recovering turbine exhaust heat of 593℃ and accompanying production of hydrogen and carbon monoxide. According to the result of process simulation coupling with SOFC simulation including detailed polarization models, only addition of 16 liter POSOFC can increases the power generation efficiency by 8.5 points at fuel utilization of 80.1%.

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  • Measurement of thermal resistance and temperature under operation in MEA for PEFC

    TAKADA Shinichiro, YOSHIMURA Yusai, ADACHI Takuya, KUSAKA Jin, NAKAGAKI Takao, KUBO Norio, SUZUE Yoshinori, AOTANI Koichiro

    Proceedings of National Heat Transfer Symposium   2010 ( 0 )   209 - 209   2010

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  • PEFC内部における熱・物質輸送現象の評価・解析技術の開発

    中垣隆雄, 勝田正文, 久保則夫

    燃料電池   Vol.9 ( No.2 )   30 - 36   2009.11

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  • 化学再生発電:化学反応による廃熱のエクセルギー増進

    中垣隆雄

    化学工学   第73巻 ( 第9号 )   435 - 437   2009.9

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  • DME化学再生ガスタービンの実証試験

    中垣隆雄, 大橋幸夫, 高橋武雄, 山中矢, 佐藤純一, 笹部和宏, 渡邊恒典

    日本機械学会論文集   第72巻 ( 第718号B編 )   513 - 514   2009.3

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  • DME化学再生発電システムの開発 —マイクロガスタービンによる実証試験—

    山中, 中垣ほか

    日本ガスタービン学会誌   36 ( 3 )   219 - 224   2008.5

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  • DME改質触媒の化学再生ガスタービンへの適用性評価

    中垣ほか

    日本機械学会論文集   72 ( 718B )   1633 - 1640   2006.6

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  • 化学再生発電システム

    中垣隆雄

    化学工学会誌   70 ( 3 )   159 - 162   2006.3

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  • 化学再生ガスタービンシステムの技術開発(2)

    中垣隆雄

    火力原子力発電技術協会誌   56 ( 11 )   1071 - 1077   2005.11

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  • DMEを燃料とする化学再生発電システムの開発

    技術情報誌「OHM」   2005.9

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  • PERFORMANCE PREDICTION OF HIGH-TEMPERATURE CO2 CAPTURE SYSTEM UTILIZING LITHIUM SILICATE FOR PULVERIZED COAL-FIRED POWER PLANT

    Nakagaki, e

    Proc. ASME Power05   2005.4

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  • Chemically Recuperated Gas Turbine using Dimethyl Ether as Fuel

    Nakagaki, e

    IERE News Letter   2005.1

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  • 化学再生ガスタービンシステムの技術開発(1)

    中垣隆雄

    火力原子力発電技術協会誌   55 ( 11 )   1190 - 1195   2004.11

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  • R&amp;D最前線:ジメチルエーテルを燃料とする化学再生発電システムの開発

    中垣隆雄

    東芝レビュー   2004.11

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  • 天然ガス改質型化学再生ガスタービンの要素研究 第2報 要素技術の実験的検討

    中垣ほか

    日本機械学会論文集   69 ( 688B )   2725 - 2732   2003.12

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  • Development of Components for Chemically Recuperated Gas Turbine with Natural Gas Steam-Reforming

    Nakagaki, e

    Proc. International Conference on Power Engineering-03   2003.11

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  • 天然ガス改質型化学再生ガスタービンの要素研究 第1報 化学再生ガスタービンのシステム特性と改質器の設計

    中垣ほか

    日本機械学会論文集   69 ( 687B )   2545 - 2552   2003.11

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  • DEVELOPMENT OF CHEMICALLY RECUPERATED MICRO GAS TURBINE

    Journal of Engineering for Gas Turbines and Power, ASME   125   391 - 397   2003.10

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  • 化学再生ガスタービンコージェネレーションシステム

    中垣隆雄

    日本設計工学会誌   37 ( 12 )   620 - 625   2002.12

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  • 溶融炭酸塩型燃料電池用ガスシール構造に関する研究 第2報 ガスシール構造の実験的検討

    中垣ほか

    日本機械学会論文集   63 ( 688B )   1273 - 1280   2002.4

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  • Pressure losses at dividing and combining junctions in a molten carbonate fuel cell stack Reviewed

    H Hirata, T Nakagaki, M Hori

    JOURNAL OF POWER SOURCES   102 ( 1-2 )   118 - 123   2001.12

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  • Development of methanol steam reformer for chemical recuperation

    T Nakagaki, T Ogawa, K Murata, Y Nakata

    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME   123 ( 4 )   727 - 733   2001.10

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  • Effect of gas channel height on gas flow and gas diffusion in a molten carbonate fuel cell stack Reviewed

    H Hirata, T Nakagaki, M Hori

    JOURNAL OF POWER SOURCES   83 ( 1-2 )   41 - 49   1999.10

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  • 溶融炭酸塩型燃料電池用ガスシール構造に関する研究

    中垣ほか

    日本機械学会論文集   63 ( 616B )   4055 - 4060   1997.12

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Molten carbonate fuel cells (MCFCs) are expected to be large-scale, highly efficient energy sources in the future. A reactant gas seal is one of the critical issues in achievement of reliability of the MCFC stack, which is a key piece of equipment in an MCFC power plant. At present, the wet gas seal with carbonate molten at the operating temperature (650℃) is generally considered to be suitable as such a seal. On the other hand, to be cost-competitive with existing power plants, the MCFC stack must consist almost entirely of thin sheet metal parts. In this report, a wet gas seal configuration composed of thin sheet metal parts is proposed. Then, the long-term performance of the wet gas seal in an actual MCFC is evaluated.

    CiNii Books

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Books

  • エクセルギーデザイン学の理解と応用 続熱管理士教本

    大阪大学出版会  2012.12  （ ISBN:9784872594140 ）

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  • これからのエネルギーと省エネ—エネルギーあなたはどれを選ぶ?〈3〉

    さえら書房  2012.7  （ ISBN:9784378012438 ）

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  • ゼロから見直すエネルギー

    丸善出版  2012.4  （ ISBN:9784621085134 ）

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  • これまでのエネルギー—エネルギーあなたはどれを選ぶ?〈1〉

    さえら書房  2012.4  （ ISBN:9784378012414 ）

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  • Science and technology in catalysis 2006

    Elsevier  2007.5  （ ISBN:9784062134293 ）

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  • DMEハンドブック

    オーム社  2006.4  （ ISBN:4274202291 ）

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MISC

  • 化学再生発電システムによる燃料削減効果 Reviewed

    OHM   99 ( 6 )   4 - 5   2012.6

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  • Enhanced Hydrogen Production Process from Coal Integrated with CO2 Separation Using Dual Chemical Looping

    Takao Nakagaki

    10TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES   4   324 - 332   2011

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  • Enhanced hydrogen production process from coal integrated with CO 2 separation using dual chemical looping

    Takao Nakagaki

    Energy Procedia   4   324 - 332   2011

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    Language：English   Publisher：Elsevier Ltd  

    DOI： 10.1016/j.egypro.2011.01.058

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  • 化学反応による廃熱のエクセルギー増進 Reviewed

    中垣隆雄

    クリーンエネルギー   第19巻 ( 6号 )   17 - 21   2010.6

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  • 電気化学的部分酸化による排熱のエクセルギー再生に関する調査研究 Reviewed

    尾関高行, 中垣隆雄

    日本機械学会論文集   第76巻 ( 第763号B編 )   44 - 46   2010.3

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    DOI： 10.1299/kikaib.76.763_406

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  • PEFC内部における熱・物質輸送現象の評価・解析技術の開発 Reviewed

    中垣隆雄, 勝田正文, 久保則夫

    燃料電池   Vol.9 ( No.2 )   30 - 36   2009.11

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  • 化学再生発電:化学反応による廃熱のエクセルギー増進 Reviewed

    中垣隆雄

    化学工学   第73巻 ( 第9号 )   435 - 437   2009.9

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  • DME化学再生ガスタービンの実証試験 Reviewed

    中垣隆雄, 大橋幸夫, 高橋武雄, 山中矢, 佐藤純一, 笹部和宏, 渡邊恒典

    日本機械学会論文集   第72巻 ( 第718号B編 )   513 - 514   2009.3

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    DOI： 10.1299/kikaib.75.751_513

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  • DME化学再生発電システムの開発 —マイクロガスタービンによる実証試験— Reviewed

    山中, 中垣ほか

    日本ガスタービン学会誌   36 ( 3 )   219 - 224   2008.5

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  • DME改質触媒の化学再生ガスタービンへの適用性評価 Reviewed

    中垣ほか

    日本機械学会論文集   72 ( 718B )   1633 - 1640   2006.6

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    Dimethyl ether (DME), which is attracting attention as an alternative fuel for versatile use, has been tried to apply to the Chemically Recuperated Gas Turbine (CRGT), since DME steam-reforming that occurs at temperatures below 350℃ with endothermic reaction is suitable for chemical heat recovery and leads to enhancement of power generation efficiency and power output. One of important concerns for the DME-fueled CRGT is related to catalyst reactions in the heat recovery reformer that is a key component of the system because exothermic reactions such as methanation and CO shift disturb the chemical heat recovery. Almost 30 kinds of precious metal-based catalyst were screened using the pressurized reformer to find the most suitable candidate for the CRGT from the viewpoint of LHV increase of the reformed gas. The selected candidate of catalyst was also tested with various temperature, steam/DME molar ratios (S/DME) and pressures. The result indicated that T=450℃ and S/DME=3.5 was an appropriate condition for the reasons of the balance between endothermic and exothermic reaction rates and carbon deposition. The catalyst was also available for the pressure range up to 2.1 MPa in a MW class GT system without significant decrease of chemical heat recovery.

    DOI： 10.1299/kikaib.72.1633

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  • 化学再生発電システム Reviewed

    中垣隆雄

    化学工学会誌   70 ( 3 )   159 - 162   2006.3

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  • 化学再生ガスタービンシステムの技術開発(2) Reviewed

    中垣隆雄

    火力原子力発電技術協会誌   56 ( 11 )   1071 - 1077   2005.11

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  • DMEを燃料とする化学再生発電システムの開発 Reviewed

    技術情報誌「OHM」   2005.9

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  • PERFORMANCE PREDICTION OF HIGH-TEMPERATURE CO2 CAPTURE SYSTEM UTILIZING LITHIUM SILICATE FOR PULVERIZED COAL-FIRED POWER PLANT Reviewed

    Nakagaki, e

    Proc. ASME Power05   2005.4

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  • Chemically Recuperated Gas Turbine using Dimethyl Ether as Fuel

    Nakagaki, e

    IERE News Letter   2005.1

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  • PERFORMANCE PREDICTION OF HIGH-TEMPERATURE CO2 CAPTURE SYSTEM UTILIZING LITHIUM SILICATE FOR PULVERIZED COAL-FIRED POWER PLANT

    Nakagaki, e

    Proc. ASME Power05   2005

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  • 化学再生ガスタービンシステムの技術開発(1)

    中垣隆雄

    火力原子力発電技術協会誌   55 ( 11 )   1190 - 1195   2004.11

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  • R&amp;D最前線:ジメチルエーテルを燃料とする化学再生発電システムの開発 Reviewed

    中垣隆雄

    東芝レビュー   2004.11

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  • 天然ガス改質型化学再生ガスタービンの要素研究 第2報 要素技術の実験的検討 Reviewed

    中垣ほか

    日本機械学会論文集   69 ( 688B )   2725 - 2732   2003.12

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    DOI： 10.1299/kikaib.69.2725

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  • Development of Components for Chemically Recuperated Gas Turbine with Natural Gas Steam-Reforming

    Nakagaki, e

    Proc. International Conference on Power Engineering-03   2003.11

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  • Development of Components for Chemically Recuperated Gas Turbine with Natural Gas Steam-Reforming Reviewed

    Nakagaki, e

    Proc. International Conference on Power Engineering-03   2003.11

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  • 天然ガス改質型化学再生ガスタービンの要素研究 第1報 化学再生ガスタービンのシステム特性と改質器の設計 Reviewed

    中垣ほか

    日本機械学会論文集   69 ( 687B )   2545 - 2552   2003.11

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    DOI： 10.1299/kikaib.69.2545

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  • Development of chemically recuperated micro gas turbine

    T Nakagaki, T Ogawa, H Hirata, K Kawamoto, Y Ohashi, K Tanaka

    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME   125 ( 1 )   391 - 397   2003.1

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  • Development of chemically recuperated micro gas turbine Reviewed

    T Nakagaki, T Ogawa, H Hirata, K Kawamoto, Y Ohashi, K Tanaka

    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME   125 ( 1 )   391 - 397   2003.1

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  • 化学再生ガスタービンコージェネレーションシステム Reviewed

    中垣隆雄

    日本設計工学会誌   37 ( 12 )   620 - 625   2002.12

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  • 溶融炭酸塩型燃料電池用ガスシール構造に関する研究 第2報 ガスシール構造の実験的検討

    中垣ほか

    日本機械学会論文集   68 ( 668 )   1273 - 1280   2002

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  • Pressure losses at dividing and combining junctions in a molten carbonate fuel cell stack

    H Hirata, T Nakagaki, M Hori

    JOURNAL OF POWER SOURCES   102 ( 1-2 )   118 - 123   2001.12

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  • Development of methanol steam reformer for chemical recuperation

    T Nakagaki, T Ogawa, K Murata, Y Nakata

    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME   123 ( 4 )   727 - 733   2001.10

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  • Development of methanol steam reformer for chemical recuperation Reviewed

    T Nakagaki, T Ogawa, K Murata, Y Nakata

    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME   123 ( 4 )   727 - 733   2001.10

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  • Effect of gas channel height on gas flow and gas diffusion in a molten carbonate fuel cell stack

    H Hirata, T Nakagaki, M Hori

    JOURNAL OF POWER SOURCES   83 ( 1-2 )   41 - 49   1999.10

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  • 溶融炭酸塩型燃料電池用ガスシール構造に関する研究 Reviewed

    中垣ほか

    日本機械学会論文集   63 ( 616B )   4055 - 4060   1997.12

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    Molten carbonate fuel cells (MCFCs) are expected to be large-scale, highly efficient energy sources in the future. A reactant gas seal is one of the critical issues in achievement of reliability of the MCFC stack, which is a key piece of equipment in an MCFC power plant. At present, the wet gas seal with carbonate molten at the operating temperature (650℃) is generally considered to be suitable as such a seal. On the other hand, to be cost-competitive with existing power plants, the MCFC stack must consist almost entirely of thin sheet metal parts. In this report, a wet gas seal configuration composed of thin sheet metal parts is proposed. Then, the long-term performance of the wet gas seal in an actual MCFC is evaluated.

    DOI： 10.1299/kikaib.63.4055

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Presentations

  • 成分系混合吸収液のCO2吸収反応熱に関する研究

    化学工学会第44回秋季大会  2012.9 

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  • 高温炉熱を利用した熱化学再生の高純度アルミナ管によるメタン水蒸気改質試験

    化学工学会第44回秋季大会  2012.9 

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  • 中低温廃熱の化学再生用Ni/Cu系触媒の特性評価

    化学工学会 第77年会  2012.3 

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  • この１年で見えてきた電力供給システムの課題

    化学工学会 緊急提言委員会シンポジウム  2012.3 

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  • 固体高分子形燃料電池用ガス拡散層内のガス拡散係数計測手法の開発

    第49回日本伝熱シンポジウム  2012.5 

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  • 系統電源の構成分析と将来予測

    化学工学会 第77年会  2012.3 

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  • 固体高分子形燃料電池ガス拡散層の電子輸送抵抗に関する研究

    日本機械学会2011年度年次大会  2011.9 

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  • 固体高分子形燃料電池の内部圧力分布計測に関する研究 WAX系感温塗料の圧力計測への適用

    日本機械学会2011年度年次大会  2011.9 

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  • Estimation of Fuel Saving for Combined Heat and Power System by Chemical Recuperation

    INCHEM TOKYO2011  2011.11 

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  • 固体高分子形燃料電池用ガス拡散層の輸送特性に与える面圧の影響

    第52回電池討論会  2011.11 

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  • セラミックス吸収材充填層による断熱型CO2分離回収反応器の基礎特性

    化学工学会第43回秋季大会  2011.9 

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  • 2成分系混合化学吸収液の気液平衡特性評価

    化学工学会第43回秋季大会  2011.9 

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  • マイクロチューブ型SOFCを用いたメタンの電気化学的部分酸化による中低温排熱のエクセルギー再生(中低温で高性能なSOFC作製方法の確立)

    第17回日本機械学会動力エネルギー技術シンポジウム  2012.6 

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  • 溶融炭酸塩型燃料電池用ガスシール構造に関する研究

    日本機械学会 第73期通常総会講演会講演論文集（Ⅱ）  1996.4 

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  • MCFC用薄板製柔構造セパレータの開発（１）

    第３５回電池討論会講演論文集  1994.10 

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  • MCFCの耐熱サイクル性向上に関する研究

    第３７回電池討論会講演論文集  1966.10 

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  • 化学再生サイクル − 現状と展望 −

    日本冷凍空調学会 CO2を含む将来冷媒の先進熱交換器に関する調査研究 第7回講演会  2009.3 

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  • 30kW発電試験によるDME化学再生ガスタービンの性能評価

    日本機械学会第13回動力エネルギー技術シンポジウム  2008.6 

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  • 電気化学的部分酸化による排熱のエクセルギー再生に関する調査研究

    日本機械学会第14回動力エネルギー技術シンポジウム  2009.6 

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  • マイクロタービンを用いたDME化学再生発電試験

    化学工学会第39回秋季大会講演論文集  2007.9 

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  • DME化学再生発電システムの開発

    第35回ガスタービン定期講演会  2007.9 

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  • Development of DME-fueled Chemically Recuperated Gas Turbine System Demonstration Tests using 30kw Micro Gas Turbine

    2007.11 

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  • 化学再生ガスタービン発電システムの開発

    平成19年度火力原子力発電大会講演論文集  2007.10 

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  • ジメチルエーテルを燃料とする化学再生ガスタービンシステム用改質器の設計

    第11回日本機械学会動力・エネルギー技術シンポジウム講演論文集  2006.6 

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  • DME化学再生発電システムの開発

    日本機械学会関西支部第130回燃焼懇話会  2006.9 

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  • 施設園芸用CO2高度利用技術の概念検討

    日本機械学会第16回環境工学総合シンポジウム講演論文集  2006.7 

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  • ジメチルエーテルを燃料とする化学再生ガスタービンシステム用改質触媒の実験的評価

    日本機械学会第10回動力・エネルギー技術シンポジウム講演論文集  2005.6 

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  • 化学再生ガスタービンシステムの技術開発

    火力原子力発電技術協会関東支部講演会  2005.4 

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  • A Novel Carbon Dioxide Enrichment System Utilizing Lithium Silicate for Greenhouse

    8th International Conference on Greenhouse Gas Control Technologies(GHGT-8)  2006.6 

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  • 化学再生ガスタービン

    日本ガスタービン学会第34回ガスタービンセミナー資料集  2006.1 

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  • DEVELOPMENT OF CHEMICALLY RECUPERATED MICRO GAS TURBINE

    36th Intersociety Energy Conversion Engineering Conference  2001.8 

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  • 水素分離・非平衡型化学再生ガスタービンの検討

    化学工学会第33回秋季大会  2000.9 

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  • ジメチルエーテル改質型化学再生ガスタービンシステムの性能予測

    日本機械学会第9回動力・エネルギー技術シンポジウム講演論文集  2004.6 

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  • 化学再生ガスタービンシステム．

    日本機械学会RC196調査研究分科会第13回報告会  2004.5 

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  • 化学再生ガスタービン用改質器の性能検討

    日本機械学会 第７回動力・エネルギー技術シンポジウム  2000.6 

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  • DEVELOPMENT OF METHANOL STEAM REFORMER FOR CHEMICAL RECUPERATION

    International Joint Power Generation Conference and Exposition and International Conference on Power Engineering-99  1999.7 

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  • DRCを用いたCO2吸収液の反応熱に関する研究

    化学工学会第43回秋季大会  2011.9 

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  • EXERGY RECUPERATION OF MID AND LOW QUALITY HEAT BY CHEMICAL REACTIONS

    ASME ES-Fuel Cell 2011  2011.8 

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  • 今夏の電力供給の概要と今後の見込み

    化学工学会札幌大会2011  2011.8 

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  • 高温炉熱を利用した熱化学再生の無触媒メタン水蒸気改質試験

    化学工学会第43回秋季大会  2011.9 

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  • 今夏の電力供給の概要

    化学工学会第43回秋季大会  2011.9 

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  • 燃料電池MEA構成部材の電子伝導度と接触抵抗の分離解析手法の開発

    第48回日本伝熱シンポジウム  2011.5 

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  • 固体高分子形燃料電池ガス拡散層内の水蒸気有効拡散係数の計測

    第48回日本伝熱シンポジウム  2011.5 

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  • 蒸気噴射型ガスタービンコージェネレーション運用事業所の化学再生化による有効性の検討

    第16回日本機械学会動力エネルギー技術シンポジウム  2011.6 

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  • 円筒型SOFCを用いたメタンの電気化学的部分酸化による排熱のエクセルギー再生（数値計算による熱取込量と発電性能の定量化）

    第16回日本機械学会動力エネルギー技術シンポジウム  2011.6 

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  • 今夏および数年間の電力供給見込み

    シンポジウム：東日本大震災に伴う電力不足対策に関する緊急提言  2011.4 

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  • 骨太エネルギー技術の紹介(1) 社会とエネルギーおよびエネルギーレビュー

    化学工学会第76年会  2011.3 

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  • MDEA/PZ系混合化学吸収液のCO2吸収速度評価

    化学工学会第76年会  2011.3 

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  • Enhanced hydrogen production process from coal integrated with CO2 separation using dual chemical looping

    GHGT10  2010.9 

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  • DMEを利用した中低温廃熱の化学再生用触媒の実験的研究

    第15回日本機械学会動力エネルギー技術シンポジウム  2010.6 

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  • 2040年のCO2排出量予測 骨太のエネルギーロードマップ第2版

    第42回化学工学会秋季大会  2010.9 

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  • DME改質による中低温廃熱の化学再生用触媒のCO生成特性

    第42回化学工学会秋季大会  2010.9 

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  • 中低温廃熱を利用したジメチルエーテル改質型化学再生発電システム用触媒の実験的評価

    化学工学会第41回秋季大会  2009.9 

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  • 新水素製造法用CO2吸収材と酸素キャリアの性能評価

    化学工学会第41回秋季大会  2009.9 

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  • CO2回収型新水素製造法の研究 -黒鉛/CuOによるガス化試験-

    第15回日本機械学会動力エネルギー技術シンポジウム  2010.5 

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  • PEFC用MEAの熱抵抗及び発電中のMEA内温度の計測，講演論文集（査読なし）

    第47回日本伝熱シンポジウム  2009.11 

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  • 実構造をベースとした燃料電池用ガス拡散層の有効熱伝導度の計測・解析

    第53回電池討論会  2012.11 

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  • 実構造をベースとした燃料電池用ガス拡散層の有効拡散係数の計測・解析

    第53回電池討論会  2012.11 

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  • 2成分系混合吸収液におけるCO2吸収速度に与えるpHの影響

    化学工学会第44回秋季大会  2012.9 

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  • セラミックス吸収材充填層の温度分布の時間変化によるCO2吸収量の評価

    化学工学会第44回秋季大会  2012.9 

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  • 実構造をベースとした燃料電池用ガス拡散層の有効電子伝導度の計測・解析

    第53回電池討論会  2012.11 

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  • Experimental study on CO2 solubility in aqueous Piperazine/alkanolamines solutions at stripper conditions

    GHGT11  2012.11 

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Industrial property rights

  • 二酸化炭素の固定化方法

    中垣 隆雄, マイヤズ・コーリ

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    Application no：2020-132855  Date applied：2020.8

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  • 二酸化炭素の固定化方法

    マイヤズ・コーリ, 中垣 隆雄, Myers, Corey Adam

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    Application no：2020-106905  Date applied：2020.6

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  • セル構造体及びその製造方法並びに燃料電池および二次電池

    中垣 隆雄

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    Application no：2019-531848  Date applied：2018.12

    Patent/Registration no：6755540  Date issued：2020.8

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  • 二酸化炭素の回収方法及び回収装置

    井上 翔太, 中垣 隆雄

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    Application no：2013-155283  Date applied：2013.7

    Announcement no：2015- 24374  Date announced：2015.2

    Patent/Registration no：6170366  Date issued：2017.7

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  • 二酸化炭素回収方法および装置

    中垣 隆雄

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    Application no：2012-166628  Date applied：2012.7

    Announcement no：2014- 24715  Date announced：2014.2

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  • 二酸化炭素分離回収装置

    中垣 隆雄

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    Application no：2012- 91676  Date applied：2012.4

    Announcement no：2013-220953  Date announced：2013.10

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  • 二酸化炭素回収方法および装置

    中垣 隆雄

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    Application no：2011-162946  Date applied：2011.7

    Announcement no：2013- 22577  Date announced：2013.2

    Patent/Registration no：5561788  Date issued：2014.6

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  • 二酸化炭素分離システム

    中垣 隆雄

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    Application no：2011-121841  Date applied：2011.5

    Announcement no：2012-245510  Date announced：2012.12

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  • 二酸化炭素分離装置

    中垣 隆雄

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    Application no：2011- 88039  Date applied：2011.4

    Announcement no：2012-217959  Date announced：2012.11

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Awards

  • 日本ガスタービン学会 技術賞

    2008.4  

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  • 日本機械学会 奨励賞（技術）

    1999.4  

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Research Projects

  • CCUのための高温CO2吸収材の実用化に関する研究

    2019.4 - 2022.3

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    Grant type：Competitive

    Grant amount：\4290000

    本提案はCO2 Capture and Utilization（CCU）のために，500～900℃の高温域で繰り返し利用可能で，自重の30％以上の吸収容量のあるCO2吸収材，リチウムシリケート（以下LS）を用い，製鉄業のCO2分離回収システム実用化を目指した研究である．材料面においてはLS成形体のサイクル容量維持率の格段の向上を図る．反応器レベルでは，既反応層による物質輸送抵抗の影響と処理ガスの圧力損失を最小化しつつ，反応器の小型化と吸収量確保を達成するハニカム形状を数値計算にて設計し，その性能を実験的に評価する．また，分離CO2の利用として炭素循環製鉄システムのプロセス設計も行う．これまでの研究で，造孔剤として使用していたセルロースが圧縮成型時に楕円状へと構造変化を起こし，この構造変化がCO2吸収・放出時の微細構造変化の原因であることがMonte Carlo法の焼結シミュレーションツールQ-states POTTsモデルの計算結果により明らかになっている．本年度は開発したQ-states POTTsモデルの計算結果から圧縮成型後も円筒状の空隙を保持可能な造孔剤としてアセチレンカーボンブラックを選定した．この造孔剤を添加したリチウムシリケート（LS）を用いた熱重量示差熱分析（TG-DTA）によりCO2吸収・放出試験を12回繰り返し実施した．その結果から，12回目でもCO2吸収・放出容量の低下は5%未満であり，アセチレンカーボンブラックを造孔剤として用いることで，CO2吸収・放出時の微細構造変化に起因した吸収容量低下の抑制が可能であることが明らかとなった．コスト削減のためにアセチレンカーボンブラックの添加量を実験と補完的な数値計算によって決定した．TG-DTAによって測定した吸収・放出挙動を模擬するために，多孔質内での輸送現象を正確に模擬可能なDusty-gasモデルに生成/消滅項としてCO2吸収・放出反応を組み込んだ計算モデルを開発した．反応速度式中の係数はTG-DTAの結果に数値計算をフィッティングすることで決定し，LSの吸収・放出挙動を模擬した．LSの吸収・放出挙動を模擬可能な数値計算モデルにより，空隙率をパラメータとして数値計算を実施したところ，20分の吸収時間では空隙率が30%のときに吸収量が最大となった．細孔形状を円筒と仮定したQ-states POTTsモデルの計算結果より，CO2吸収・放出時の微細構造変化後の空隙率が30％となる初期空隙率は40％であったため，アセチレンカーボンブラックの適切な添加量を7wt%とした．研究計画通りに計画が進んでいる．平成31年度はTG-DTAによるCO2吸収・放出挙動の結果を模擬可能な数値計算モデルを開発した．開発した数値計算モデルによって繰り返し容量を維持可能な細孔構造を決定した．この数値計算モデルでは幾何学形状の変更によってハニカム形状のLSの評価が可能であるため，今後の研究の基礎を確立できた．（1）数値計算によるハニカム成形体の形状設計と製作 平成31年度の研究で決定した微細構造を有するハニカム成形体でのCO2吸収・放出の挙動を予測可能な数値計算モデルをCOMSOL Multiphysicsを用いて開発する．開発した数値計算モデルを用いて，ハニカムの幾何学形状をパラメータとして数値計算を実施し，ハニカム成形体の性能を評価する．また，CO2吸収・放出挙動の計算結果からハニカム成型体の形状を決定する．（2）実験によるLS成型体の性能評価 数値計算によって決定した形状のLSの成形を外注する．成形したハニカム成形体のCO2吸収・放出の非定常的かつ定量的な挙動を二重管反応器によって実験的に評価すると共に，前述の数値計算モデルの妥当性を確認する．試験と計算に差異がある場合には，押出成形法の圧力に起因した違いであると予測されるため，微細構造のキャラクタリゼーションを実施する．（3）Aspen Plusによるプロセス評価 COMSOL Multiphysicsにより開発した計算モデルによって実機相当にスケールアップしたLSの挙動をモデル化し，単位操作としてAspen Plusに組み込む．システム解析によって製鉄所のCCUによるCO2排出削減量を数値的に評価する

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  • データ同化を用いた単一分子計測法の高度化と階層性微細孔内での吸着・拡散挙動の解明

    2019.4 - 2022.3

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    Grant type：Competitive

    Grant amount：\17420000

    マクロ・メソ・ミクロ孔といった空間階層性を有した多孔質物質は，触媒をはじめとして吸着材料，イオン交換，太陽光発電，ガス検知など非常に広範な機器において中心的な役割を果たしている．本研究では，単一分子計測法（SMT: Single Molecule Tracking）により，階層性を有した微細孔内での分子の吸着・拡散現象を直接計測・解析する．またマクロスケールでの計測結果と対比することで，吸着・拡散現象を詳細にモデル化する．これにより将来的に，微細孔径分布をコントロールすることで，所望する性能を有した材料をボトムアップにより設計開発するための方法論の基盤構築を行うことを目的とする

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  • Fabrication of TPB microstructure of SOFC by using 3D printers

    Grant number：16K14177  2016.4 - 2017.3

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

    Yoshida Makoto, OKANE Toshimitsu

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    Grant type：Competitive

    Grant amount：\3640000

    This research aims to fabricate the three-dimensional microstructure of triple phase boundary in solid oxide fuel cells, in which each network is ideally connected, by using 3D printers. Three kinds of ink slurry, which are electrolyte, electrode and filler to form the pore network after sublimation, are developed to ensure proper jet of each slurry and fast fabrication of microstructure. In order to optimize concentration, dispersion and viscosity, main solutes, solvents and dispersants are mixed and orchestrated in various blend ratios. Eventually, we succeeded in fabricating the around 25 micrometers microstructure of multi-layered triple phase boundary with completely connected three networks

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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 type：Competitive

    Grant amount：\13520000

    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

    researchmap

  • Geometry design of CO2 solid sorbent used in Active Carbon Recycling Energy System for iron making process

    Grant number：26420159  2014.4 - 2017.3

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

    Takao Nakagaki

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    Grant type：Competitive

    Grant amount：\4940000

    In order to apply the high temperature CO2 separation technology for iron and steel making process, calcination of lithium silicate and pelletization procedure were developed, and the absorption test using cylindrical-hollow-shaped LS pellet designed by numerical calculation. The numerical analysis employed the combination model of chemical reaction and mass transport in the porous media and improved the prediction accuracy of the absorption behavior. The pellet produced according to the optimized design was tested by TG-DTA at 650 degrees C and 30% CO2 concentration. The pellet reached maximum absorption within 10 minutes and kept 78.4% of the initial CO2 loading after 5 heat cycles. Furthermore, the unsteady absorption behavior in the packed-bed reactor was simulated taking heat and mass transport into account. Consequently, the amount of CO2 absorption and the temperature peak shift caused by absorption heat was accurately simulated and agreed with the experimental result

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  • Exergy Recuperation of Exhaust Heat by Electrochemical Partial Oxidation

    Grant number：23560244  2011.4 - 2014.3

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

    NAKAGAKI Takao

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    Grant type：Competitive

    Grant amount：\5330000

    The numerical analysis using cylindrical quasi-2D non-isothermal model quantified the cell performance and heat uptake realized by the MGT-EPOx combined system in which the power generation efficiency increase by 8.5 points, and the result set a target for the SOFC. After the characterization and fabrication process which satisfy multi-physical transport properties required for the electrodes and electrolyte at a high level were established, thin-layered Pt/Al2O3 catalyst which have both the selectivity of partial oxidation at low temperatures and anti-coking was incorporated between the interface of anode and electrolyte by Ratio Frequency Sputtering method. The maximum power density of the fabricated SOFC was 207.5 mW/cm2 using dry methane as fuel and CO selectivity derived by EPOx reaction was 84.3% at 600deg-C

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  • Study on Future Energy Systems Designed by Feasible Technology for Japan

    2011

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    Grant type：Competitive

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  • Exergy analysis of active carbon recycle system in iron-making process

    2011

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    Grant type：Competitive

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  • Fuel saving of high-temperature furnace by thermochemical recuperation

    2010

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    Grant type：Competitive

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  • CO2 capture and separation system using a solid sorbent for distributed power sources

    2010

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    Grant type：Competitive

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  • Mesurement of transport resistance of heat, electron and mass in PEMFC

    2010

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    Grant type：Competitive

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  • CO2 capture and separation from coal-fired power plant by amine solutions

    2009

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    Grant type：Competitive

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  • Enhanced Hydrogen Production Process from Coal Integrated with CO_2 Separation Using Dual Chemical Looping

    Grant number：20560785  2008 - 2010

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

    NAKAGAKI Takao

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    Grant type：Competitive

    Grant amount：\4550000

    Copper oxide is one of the suitable materials for oxygen carrier because reduction of CuO by carbon is exothermic reaction which benefits energy balance in the proposed hydrogen production process. The result of thermogravimetry test using dry mixtures of copper oxide and graphite showed rapid weight change at around 600℃. Hydrogen production from graphite was confirmed at around 600℃ by the gasification test in combination with Lithium Silicate used as CO_2 sorbent under the condition of various C/CuO mixture ratio and steam mass flow, and this result showed reaction promotion effect derived from non-equilibrium state by CO_2 absorption

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  • Direct measurement of temperature distribution in PEMFC

    2008 - 2009

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    Grant type：Competitive

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  • Development of DME-fueled CRGT

    2007

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    Grant type：Competitive

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