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2007 Fiscal Year Final Research Report Summary

Study of Ammonia Dissociation System for Portable Fuel Cells

Research Project

Project/Area Number 16560192
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKogakuin University

Principal Investigator

SAIKA Takashi  Kogakuin University, Faculty of Global Engineering, Professor (20146731)

Co-Investigator(Kenkyū-buntansha) ISHII Chiharu  Kogakuin University, Faculty of Global Engineering, Associate Professor (80296079)
Project Period (FY) 2004 – 2007
KeywordsFuel cell / Hydrogen energy / Ammonia dissociation / Hydrogen generator / Portable electric generator / Low cont. ammonia separation
Research Abstract

In this research, the researchers have described a fuel-cell electric vehicle for trial purposes with the hydrogen generation system fueled with ammonia for compact vehicles. The system consists of a dissociator with Ruthenium/Alumina catalyst, aheat exchanger and an ammonia separator to remove residual ammonia. The dissociation system compactly unifies the heat exchanger and the dissociator to effectively rise the temperature of the system by installing some alumina balls just before catalyst. Therefore the system can be small in size enough to be installed on-board in the vehicle.
The cruising time is about 160 minutes in the system. If the concentration of residual ammonia in the dissociated gas becomes 13 ppm or more, the residual ammonia will poison the proton exchange membrane (electrolyte) of the fuel cell, and cause the fuel cell to decrease the output. The residual ammonia in the separator must be removed, because the ammonia concentration in the dissociated gas reaches 13 ppm after 160 minutes in the experiment. If the residual ammonia is removed, the system can be expected to be about 2.5 times of the cruising time. In addition, it is estimated that the fuel cell will probably work for about 20 hours with 10 liters of liquid ammonia.
In this research, the hydrogen generation system fueled with liquid ammonia for fuel cells was proposed, and the vehicle with the ammonia dissociation system was actually manufactured for a trial purpose. Ammonia will be also expected as an alternate fuel for the measure of the environmental problem. Although further improvement of energy efficiency and safety is needed, the fuel-cell electric vehicle can be one of the clean future vehides by assuming liquid ammonia as an alternate fuel for fuel cells.

  • Research Products

    (6 results)

All 2008 2007

All Journal Article (2 results) Presentation (2 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 「研究成果報告書概要(欧文)」より2008

    • Author(s)
      Takashi Saika, et. al.
    • Journal Title

      Micro Fuel-cell Development

      Pages: 147-156

  • [Journal Article] 「研究成果報告書概要(欧文)」より2007

    • Author(s)
      Takashi Saika, et. al.
    • Journal Title

      Hydrogen Technologies Handbook Vol. 3

      Pages: 62-67

  • [Presentation] Design of a Fuel-Cell Electric Vehicle with a Dissociation System Fueled with Ammonia2007

    • Author(s)
      Masaya Otoguro, Hiroshi Mitsui, Tetsuo Nohara, Takashi Saika
    • Organizer
      43th Tohoku-branch, Japan Society of Mechanical Engineers
    • Year and Date
      2007-09-29
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Design of a Fuel-Cell Electric Vehicle with a Hydrogen Generation System Fueled with Ammonia2007

    • Author(s)
      Masaya Otoguro, Takashi Saika, Kotaro Akasaka, Tetsuo Nohara
    • Organizer
      The 14th Asia Pacific Automotive Engineering Conference
    • Place of Presentation
      Hollywood, USA
    • Year and Date
      2007-08-06
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] マイクロ燃料電池の開発最前線(第2編第2章2アンモニア)2008

    • Author(s)
      雑賀高, 他(共著)
    • Total Pages
      298
    • Publisher
      (株)エヌ・ティー・エス
    • Description
      「研究成果報告書概要(和文)」より
  • [Patent(Industrial Property Rights)] 水素生成装置2007

    • Inventor(s)
      雑賀高, 他
    • Industrial Property Rights Holder
      TAMA-TLO
    • Industrial Property Number
      特願2007-202731
    • Filing Date
      2007-08-03
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2010-06-09  

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