Modeling and experimental validation of H2 gas bubble humidifier for a 50 kW stationary PEMFC system

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

    Research output: Contribution to journalArticleScientificpeer-review

    7 Citations (Scopus)

    Abstract

    Ensuring uniform membrane hydration in a PEMFC (Proton Exchange Membrane Fuel Cell) is important for its performance and durability. In this study, a bubble humidifier for humidifying hydrogen in a 50 kW PEMFC pilot plant was designed, built, and modeled. Initial tests, carried out by humidifying air, show that a dew point temperature of higher than 59 °C is attained when operating the PEMFC plant at nominal power at 65 °C. The model simulation results show good agreement with experimental data and the model is used for studying humidifier performance at other conditions. Steady state simulation results suggest that by increasing the heating water flow rate, the humidifier outlet dew point temperature can be increased by several degrees because of improved heat transfer. Finally, dynamic simulation results suggest that the humidity of the hydrogen can be controlled by manipulating the heat supply to the humidifier
    Original languageEnglish
    Pages (from-to)9768-9781
    Number of pages13
    JournalInternational Journal of Hydrogen Energy
    Volume39
    Issue number18
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Bubble humidifier
    • humidity
    • hydrogen
    • PEMFC

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