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Influence of the Geometry of the Oxygen Removal Chamber on the Oxygen Concentration in a PEM Water Electrolysis System

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  • Sooin Kwon

    (School of Mechanical Engineering, Pusan National University, Busandaehak-ro 63beon-gil 2, Geumjeong-gu, Busan 46241, Republic of Korea
    School of Electronical Engineering, Pusan National University, Busandaehak-ro 63beon-gil 2, Geumjeong-gu, Busan 46241, Republic of Korea
    Sunbo Unitech R&D Center, 97, Centum jungang-ro, Haeundae-gu, Busan 48058, Republic of Korea)

  • Seongyong Eom

    (School of Mechanical Engineering, Pusan National University, Busandaehak-ro 63beon-gil 2, Geumjeong-gu, Busan 46241, Republic of Korea)

  • Gyungmin Choi

    (School of Mechanical Engineering, Pusan National University, Busandaehak-ro 63beon-gil 2, Geumjeong-gu, Busan 46241, Republic of Korea)

Abstract

In this paper, we investigate the optimization of an oxygen removal system for water electrolysis plants because high oxygen concentrations can be dangerous and compromise the quality of the hydrogen produced. The design of an oxygen removal system was investigated using numerical analysis. The results showed that the diameter of the chamber had a significant effect on the oxygen removal efficiency, and a diameter twice the size of the gas inlet was found to be optimal. The porosity of the catalyst layer also played a crucial role in the efficiency, with a lower porosity resulting in higher removal rates. Additionally, the optimal chamber length was found to be 76.8 D to achieve an oxygen mole fraction of 2.4 ppm after the chamber, which satisfied the safety criterion of 4.0 ppm. These results can aid in the design of oxygen removal systems for water electrolysis plants, providing a more efficient and safer operation.

Suggested Citation

  • Sooin Kwon & Seongyong Eom & Gyungmin Choi, 2023. "Influence of the Geometry of the Oxygen Removal Chamber on the Oxygen Concentration in a PEM Water Electrolysis System," Energies, MDPI, vol. 16(20), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:20:p:7119-:d:1261296
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    References listed on IDEAS

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    1. Nikolaidis, Pavlos & Poullikkas, Andreas, 2017. "A comparative overview of hydrogen production processes," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 597-611.
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