Theoretical and experimental study of a 10 kilowatt proton exchange membrane fuel cell's thermal and moisture system control: Master's thesis

    Research output: ThesisMaster's thesisTheses

    Abstract

    A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production.

    In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range.

    Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar.

    In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow.
    The power density increases by pressurization and this leads system size and cost reductions.
    Original languageEnglish
    QualificationMaster Degree
    Awarding Institution
    • Helsinki University of Technology
    Supervisors/Advisors
    • Lampinen, Markku, Supervisor, External person
    • Ihonen, Jari, Advisor
    Place of PublicationEspoo
    Publication statusPublished - 2008
    MoE publication typeG2 Master's thesis, polytechnic Master's thesis

    Fingerprint

    Pressurization
    Proton exchange membrane fuel cells (PEMFC)
    Moisture
    Control systems
    Fuel cells
    Blowers
    Water management
    Cost reduction
    Oxidants
    Atmospheric pressure
    Compressors
    Atmospheric humidity
    Electricity
    Hot Temperature
    Availability
    Air
    Water

    Keywords

    • PEMFC
    • air and water management
    • pressurization

    Cite this

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    title = "Theoretical and experimental study of a 10 kilowatt proton exchange membrane fuel cell's thermal and moisture system control: Master's thesis",
    abstract = "A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production. In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range. Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar. In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow. The power density increases by pressurization and this leads system size and cost reductions.",
    keywords = "PEMFC, air and water management, pressurization",
    author = "Jaana Viitakangas",
    note = "CA2: tk503",
    year = "2008",
    language = "English",
    school = "Helsinki University of Technology",

    }

    TY - THES

    T1 - Theoretical and experimental study of a 10 kilowatt proton exchange membrane fuel cell's thermal and moisture system control

    T2 - Master's thesis

    AU - Viitakangas, Jaana

    N1 - CA2: tk503

    PY - 2008

    Y1 - 2008

    N2 - A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production. In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range. Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar. In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow. The power density increases by pressurization and this leads system size and cost reductions.

    AB - A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production. In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range. Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar. In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow. The power density increases by pressurization and this leads system size and cost reductions.

    KW - PEMFC

    KW - air and water management

    KW - pressurization

    M3 - Master's thesis

    CY - Espoo

    ER -