Optimization study of purge cycle in proton exchange membrane fuel cell system

Kaj Nikiforow (Corresponding Author), Henri Karimäki, Tommi Keränen, Jari Ihonen

    Research output: Contribution to journalArticleScientificpeer-review

    49 Citations (Scopus)

    Abstract

    In PEMFC (proton exchange membrane fuel cell) systems operating in dead-end mode, hydrogen purges are needed to remove accumulated inert gases and liquid water from the anode side of the fuel cell stack. Hydrogen purges were studied using different humidity levels, purge times, and purge triggering criteria. The purged gas volume and composition were accurately measured with fast data acquisition and an advanced experimental set-up. The experiments were done with constant current density with aim of keeping the anode gas recirculation rate constant. Fuel utilization per pass varied as the hydrogen content on the anode side changed. This study demonstrates how the optimized purge strategy changes with a changing humidity level. It also shows that high fuel efficiency (>99%) is easily reached and that with optimized purge strategy a very high fuel efficiency (99.9%) can be reached. It was also shown that concentration polarization due to accumulation of inert gases on the anode side is two times higher than values obtained by theoretical calculations. This result is significant for purge strategy and system design.
    Original languageEnglish
    Pages (from-to)336-344
    Number of pages9
    JournalJournal of Power Sources
    Volume238
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Proton exchange membrane fuel cells (PEMFC)
    fuel cells
    Anodes
    anodes
    membranes
    Noble Gases
    Hydrogen
    cycles
    optimization
    protons
    Inert gases
    humidity
    rare gases
    Atmospheric humidity
    hydrogen
    Gases
    gases
    systems engineering
    data acquisition
    Fuel cells

    Keywords

    • PEMFC system
    • Purge cycle
    • inert build-up
    • hydrogen quality

    Cite this

    @article{c5e18695b79d429e82406d614ff22372,
    title = "Optimization study of purge cycle in proton exchange membrane fuel cell system",
    abstract = "In PEMFC (proton exchange membrane fuel cell) systems operating in dead-end mode, hydrogen purges are needed to remove accumulated inert gases and liquid water from the anode side of the fuel cell stack. Hydrogen purges were studied using different humidity levels, purge times, and purge triggering criteria. The purged gas volume and composition were accurately measured with fast data acquisition and an advanced experimental set-up. The experiments were done with constant current density with aim of keeping the anode gas recirculation rate constant. Fuel utilization per pass varied as the hydrogen content on the anode side changed. This study demonstrates how the optimized purge strategy changes with a changing humidity level. It also shows that high fuel efficiency (>99{\%}) is easily reached and that with optimized purge strategy a very high fuel efficiency (99.9{\%}) can be reached. It was also shown that concentration polarization due to accumulation of inert gases on the anode side is two times higher than values obtained by theoretical calculations. This result is significant for purge strategy and system design.",
    keywords = "PEMFC system, Purge cycle, inert build-up, hydrogen quality",
    author = "Kaj Nikiforow and Henri Karim{\"a}ki and Tommi Ker{\"a}nen and Jari Ihonen",
    year = "2013",
    doi = "10.1016/j.jpowsour.2012.11.153",
    language = "English",
    volume = "238",
    pages = "336--344",
    journal = "Journal of Power Sources",
    issn = "0378-7753",
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    Optimization study of purge cycle in proton exchange membrane fuel cell system. / Nikiforow, Kaj (Corresponding Author); Karimäki, Henri; Keränen, Tommi; Ihonen, Jari.

    In: Journal of Power Sources, Vol. 238, 2013, p. 336-344.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Optimization study of purge cycle in proton exchange membrane fuel cell system

    AU - Nikiforow, Kaj

    AU - Karimäki, Henri

    AU - Keränen, Tommi

    AU - Ihonen, Jari

    PY - 2013

    Y1 - 2013

    N2 - In PEMFC (proton exchange membrane fuel cell) systems operating in dead-end mode, hydrogen purges are needed to remove accumulated inert gases and liquid water from the anode side of the fuel cell stack. Hydrogen purges were studied using different humidity levels, purge times, and purge triggering criteria. The purged gas volume and composition were accurately measured with fast data acquisition and an advanced experimental set-up. The experiments were done with constant current density with aim of keeping the anode gas recirculation rate constant. Fuel utilization per pass varied as the hydrogen content on the anode side changed. This study demonstrates how the optimized purge strategy changes with a changing humidity level. It also shows that high fuel efficiency (>99%) is easily reached and that with optimized purge strategy a very high fuel efficiency (99.9%) can be reached. It was also shown that concentration polarization due to accumulation of inert gases on the anode side is two times higher than values obtained by theoretical calculations. This result is significant for purge strategy and system design.

    AB - In PEMFC (proton exchange membrane fuel cell) systems operating in dead-end mode, hydrogen purges are needed to remove accumulated inert gases and liquid water from the anode side of the fuel cell stack. Hydrogen purges were studied using different humidity levels, purge times, and purge triggering criteria. The purged gas volume and composition were accurately measured with fast data acquisition and an advanced experimental set-up. The experiments were done with constant current density with aim of keeping the anode gas recirculation rate constant. Fuel utilization per pass varied as the hydrogen content on the anode side changed. This study demonstrates how the optimized purge strategy changes with a changing humidity level. It also shows that high fuel efficiency (>99%) is easily reached and that with optimized purge strategy a very high fuel efficiency (99.9%) can be reached. It was also shown that concentration polarization due to accumulation of inert gases on the anode side is two times higher than values obtained by theoretical calculations. This result is significant for purge strategy and system design.

    KW - PEMFC system

    KW - Purge cycle

    KW - inert build-up

    KW - hydrogen quality

    U2 - 10.1016/j.jpowsour.2012.11.153

    DO - 10.1016/j.jpowsour.2012.11.153

    M3 - Article

    VL - 238

    SP - 336

    EP - 344

    JO - Journal of Power Sources

    JF - Journal of Power Sources

    SN - 0378-7753

    ER -