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Basic study on electric load following operation of small distributed solid oxide fuel cell system

Research Project

Project/Area Number 15560732
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Energy engineering
Research InstitutionToyohashi University of Technology

Principal Investigator

INUI Yoshitaka  Toyohashi University of Technology, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (70168425)

Co-Investigator(Kenkyū-buntansha) ITO Kohei  Kyushu University, Faculty of Engineering, Associate Professor, 大学院・工学研究院, 助教授 (10283491)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2005: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2004: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2003: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordssolid oxide fuel cell / small distributed generator / load change / electric load following operation / single cell plate / constant temperature operation / inverter / electric double layer capacitor / 交流インピーダンス / 可変負荷運転 / 熱ストレス
Research Abstract

The solid oxide fuel cell (SOFC) adopts oxygen ion conducting ceramic materials, such as yttria-stabilized zirconia (YSZ), as the electrolyte, and its operating temperature is very high as 1200-1300 K, leading to an advantage that very high overall efficiency can be achieved by combining it with some suitable bottoming cycle, such as the gas turbine, that can utilize its exhaust gas. Its research and development, therefore, have been actively promoted for middle to large-scale electric power sources. In addition, it is now also expected as the power source for the small distributed co-generation systems, because its efficiency is expected to reach about 50% by itself without the bottoming cycle by utilizing the internal heat generation for the steam reforming reaction of the fuel. The SOFC, however, has a problem in durability of the ceramics used as its cell materials, because its operating temperature is very high and cell temperature fluctuation induces the thermal stress to the cer … More amics. The cell temperature distribution in it, therefore, should be kept as constant as possible. In the case of the small distributed co-generation systems, however, the variable load operation through the control of the average current density in the cell is necessary, and this operation usually causes the cell temperature fluctuation. Considering this fact, aiming at the establishment of the variable load operation of the SOFC, we investigate the relation between the average current density and the temperature distribution in the co-flow and counter-flow type planar SOFC single cells by numerical simulations. It is made clear from the simulations that the change of the temperature distribution can be suppressed to sufficiently low level and the variable load operation can be realized for both types of cells by properly regulating the air utilization. To compensate the very fast load change and to smoothen the power fluctuation, we propose to install an electric double layer capacitor between the SOFC and the load, and its effect is confirmed through numerical simulations. In addition, an experimental circuit using an electric double layer capacitor is composed, and the experimental results are compared with the simulation results. As a result, although there exists a little difference on the transient response, it is made clear that the experimental circuit operates almost according to the simulation. This indicates the validity of the capacitor control method proposed in this study. Less

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (17 results)

All 2006 2005 2004 Other

All Journal Article (14 results) Publications (3 results)

  • [Journal Article] 天然ガスおよび石炭ガス利用炭酸ガス回収式SOFC/GT複合発電システムの検討2006

    • Author(s)
      乾 義尚, 松前友広, 西浦 健
    • Journal Title

      電気学会論文誌B分冊 126・3

      Pages: 365-372

    • NAID

      10017277019

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Performance Simulation of Planar SOFC Using Mixed Hydrogen and Carbon Monoxide Gases as Fuel2006

    • Author(s)
      Y.Inui, A.Urata, N.Ito, T.Nakajima, T.Tanaka
    • Journal Title

      Energy Conversion and Management (掲載予定)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Analytical Investigation on Cell Temperature Control Method of Planar Solid Oxide Fuel Cell2006

    • Author(s)
      Y.Inui, N.Ito, T.Nakajima, A.Urata
    • Journal Title

      Energy Conversion and Management (掲載予定)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Study on Carbon-Dioxide-Recovering SOFC/GT Combined Power Generation System Utilizing Natural Gas and Coal Gas2006

    • Author(s)
      Y.Inui, T.Matsumae, K.Nishiura
    • Journal Title

      IEEJ Transactions on PE (in Japanese) Vol.126, No.3

      Pages: 365-372

    • NAID

      10017277019

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Performance Simulation of Planar SOFC Using Mixed Hydrogen and Carbon Monoxide Gases as Fuel2006

    • Author(s)
      Y.Inui, A.Urata, N.Ito, T.Nakajima, T.Tanaka
    • Journal Title

      Energy Conversion and Management (in printing)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Analytical Investigation on Cell Temperature Control Method of Planar Solid Oxide Fuel Cell2006

    • Author(s)
      Y.Inui, N.Ito, T.Nakajima, A.Urata
    • Journal Title

      Energy Conversion and Management (in printing)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Performance Simulation of Planar SOFC Using Mixed Hydrogen and Carbon Monoxide Gases as Fuel2006

    • Author(s)
      Y.Inui, A.Urata, N.Ito, T.Nakajima, T.Tanaka
    • Journal Title

      Energy Conversion and Management (掲載決定)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Analytical Investigation on Cell Temperature Control Method of Planar Solid Oxide Fuel Cell2006

    • Author(s)
      Y.Inui, N.Ito, T.Nakajima, A.Urata
    • Journal Title

      Energy Conversion and Management (掲載決定)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] High Performance SOFC/GT Combined Power Generation System with CO_2 Recovery by Oxygen Combustion Method2005

    • Author(s)
      Y.Inui, T.Matsumae, H.Koga, K.Nishiura
    • Journal Title

      Energy Conversion and Management 46・11-12

      Pages: 1837-1847

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] 平板型固体酸化物燃料電池の可変負荷運転法に関する基礎的検討2005

    • Author(s)
      乾 義尚, 伊藤信之, 中島丈晴, 浦田敦史
    • Journal Title

      電気学会論文誌B分冊 125・6

      Pages: 595-602

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] High Performance SOFC/GT Combined Power Generation System with CO_2 Recovery by Oxygen Combustion Method2005

    • Author(s)
      Y.Inui, T.Matsumae, H.Koga, K.Nishiura
    • Journal Title

      Energy Conversion and Management Vol.46, No.11-12

      Pages: 1837-1847

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Fundamental Study on Variable Load Operation of Planar Solid Oxide Fuel Cell2005

    • Author(s)
      Y.Inui, N.Ito, T.Nakajima, A.Urata
    • Journal Title

      IEEJ Transactions on PE (in Japanese) Vol.125, No.6

      Pages: 595-602

    • NAID

      210000173096

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 平板型固体酸化物燃料電池単セル板の動作特性シミュレーション2004

    • Author(s)
      乾 義尚, 須藤哲郎, 伊藤信之
    • Journal Title

      電気学会論文誌B分冊 124・2

      Pages: 291-298

    • NAID

      10011965207

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Performance Simulation for Single Cell Plate of Planar Solid Oxide Fuel Cell2004

    • Author(s)
      Y.Inui, T.Suto, N.Ito
    • Journal Title

      IEEJ Transactions on PE (in Japanese) Vol.124, No.2

      Pages: 291-298

    • NAID

      10011965207

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] Y.Inui, S.Yanagisawa, T.Ishida: "Proposal of High Performance SOFC Combined Power Generation System with Carbon Dioxide Recovery"Energy Conversion and Management. 44・4. 597-609 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 乾 義尚, 石田太一, 松前友広: "加圧燃料空気作動固体酸化物形燃料電池を用いた炭酸ガス回収式高効率複合発電システム"電気学会論文誌B分冊. 123・9. 1097-1104 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 乾 義尚, 須藤哲郎, 伊藤信之: "平板型固体酸化物燃料電池単セル板の動作特性シミュレーション"電気学会論文誌B分冊. 124・2. 291-298 (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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