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Influence of inlet-nozzle and outlet-diffuser mounted in the plate-shape reactor on PEMFC net power output and methanol steam reforming performance

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  • Perng, Shiang-Wuu
  • Wu, Horng-Wen

Abstract

A proton exchange membrane fuel cell (PEMFC) fueled from a plate-shape reactor under steam reforming of methanol is believed to be an optimistic minute power source. This numerical study explores the conversion efficacy of a plate methanol steam reformer (MSR) with an inlet-nozzle and an outlet-diffuser. Considering various convergent ratios and lengths of inlet-nozzle examines the conversion quality of MSR and evaluates PEMFC net power output changing divergent ratio (λd) and length of outlet-diffuser (Ld) at different wall-heated temperatures (Twall). The divergent ratio is the reciprocalof convergent ratio. The results depict that the application of inlet-nozzle and outlet-diffuser to a plate reactor significantly enhances the methanol conversion of MSR and PEMFC net output power. Compared to the common reactor without nozzle and diffuser, the innovative reactor with the inlet-nozzle and outlet-diffuser ofλd = 4.0, and Ld = 7.5 mm creates the best improvement of the methanol conversion about 21.04 % and the hydrogen gain about 85.66 % at Twall = 250 °C. Furthermore, the other novel reactor with the inlet-nozzle and outlet-diffuser ofλd = 4.0, and Ld = 10.0 mm generates the greatest rise of 20.39 % in PEMFC net output power at Twall = 250 °C with the permissible CO emission.

Suggested Citation

  • Perng, Shiang-Wuu & Wu, Horng-Wen, 2022. "Influence of inlet-nozzle and outlet-diffuser mounted in the plate-shape reactor on PEMFC net power output and methanol steam reforming performance," Applied Energy, Elsevier, vol. 323(C).
    • Handle: RePEc:eee:appene:v:323:y:2022:i:c:s0306261922008327
    DOI: 10.1016/j.apenergy.2022.119510
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    References listed on IDEAS

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    1. Wu, Horng-Wen, 2016. "A review of recent development: Transport and performance modeling of PEM fuel cells," Applied Energy, Elsevier, vol. 165(C), pages 81-106.
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    1. Perng, Shiang-Wuu & Wu, Horng-Wen, 2023. "Enhancement of proton exchange membrane fuel cell net electric power and methanol-reforming performance by vein channel carved into the reactor plate," Energy, Elsevier, vol. 281(C).
    2. Phan Anh Duong & Borim Ryu & Jinwon Jung & Hokeun Kang, 2022. "Design, Modelling, and Thermodynamic Analysis of a Novel Marine Power System Based on Methanol Solid Oxide Fuel Cells, Integrated Proton Exchange Membrane Fuel Cells, and Combined Heat and Power Produ," Sustainability, MDPI, vol. 14(19), pages 1-27, September.

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