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Accumulation of Inert Impurities in a Polymer Electrolyte Fuel Cell System with Anode Recirculation and Periodic Purge: A Simple Analytical Model

Author

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  • Christopher L. Gardner

    (Fuel Cell Research Laboratory, School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, BC V3T0A3, Canada)

  • Paran J. Sarma

    (Fuel Cell Research Laboratory, School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, BC V3T0A3, Canada)

  • Erik Kjeang

    (Fuel Cell Research Laboratory, School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, BC V3T0A3, Canada)

Abstract

Anode recirculation with periodic purge is commonly used in polymer electrolyte fuel cell systems to control the accumulation of nitrogen, water, and other impurities that are present in the fuel or diffuse through the membrane from the cathode compartment. In this work, we develop a simple, generalized analytical model that simulates the time dependence of the accumulation of inert impurities in the anode compartment of such a system. It is shown that, when there is transport out of the anode chamber, the inert species is expected to accumulate exponentially until equilibrium is reached when the rate of inert entering the anode in the fuel supply and/or via crossover from the cathode is balanced by the rate of leakage and/or crossover to the cathode. The model is validated using recently published experimental data for the accumulation of N 2 , CH 4 , and CO 2 in a recirculated system. The results show that nitrogen accumulation needs to be taken into account to properly adjust system parameters such as purge rate, purge volume, and recirculation rate. The use of this generalized analytical model is intended to aid the selection of these system parameters to optimize performance in the presence of inerts.

Suggested Citation

  • Christopher L. Gardner & Paran J. Sarma & Erik Kjeang, 2022. "Accumulation of Inert Impurities in a Polymer Electrolyte Fuel Cell System with Anode Recirculation and Periodic Purge: A Simple Analytical Model," Energies, MDPI, vol. 15(6), pages 1-18, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:6:p:1968-:d:766674
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    References listed on IDEAS

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    1. Steinberger, Michael & Geiling, Johannes & Oechsner, Richard & Frey, Lothar, 2018. "Anode recirculation and purge strategies for PEM fuel cell operation with diluted hydrogen feed gas," Applied Energy, Elsevier, vol. 232(C), pages 572-582.
    2. Kurnia, Jundika C. & Sasmito, Agus P. & Shamim, Tariq, 2019. "Advances in proton exchange membrane fuel cell with dead-end anode operation: A review," Applied Energy, Elsevier, vol. 252(C), pages 1-1.
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