| Presentation | 2023-03-06 Volumetric Energy Density of A Polymer Electrolyte Fuel Cell System using NaBH4 and H2O as Hydrogen Source Considering The Amount of Recovered Water Generated during Power Generation Ryosuke Masuo, Nobukazu Hoshi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | NaBH$_4$ is attracting attention as a hydrogen source for fuel cells because it has a high volumetric energy density, is stable as a powder at room temperature and pressure, and does not produce carbon dioxide during hydrogen production. The volumetric energy density of a polymer electrolyte fuel cell system (PEFC) fueled by NaBH$_4$ and water as hydrogen sources are lowered because more water than the theoretical amount of water is fed into the system to allow NaBH$_4$ and water to react sufficiently. As a solution to this issue, this paper examines the effectiveness of recovering water, a byproduct of fuel cell power generation, and reusing it as fuel in a PEFC fueled by NaBH$_4$ and water. As a result, for the PEFC used in this study, a stoichiometric ratio of 2.0 for the air flow rate and a fuel cell cooling water temperature of 70$ {}^circmathrm{C}$ were suitable. It was also found that the volumetric energy density can be significantly improved by attaching a fan of less than $1 %$ of the output power to the cathode-side condenser. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Sodium tetrahydroborate（NaBH4） / water / polymer electrolyte fuel cell / hydrogen / volumetric energy density / hydrogen generator / hydrogen source |
| Paper # | EE2022-55 |
| Date of Issue | 2023-02-27 (EE) |
| Conference Information | |
| Committee | EE |
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| Conference Date | 2023/3/6(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yoshiyasu Nakashima(NXTEC) |
| Vice Chair | Hiroo Sekiya(Chiba Univ.) / Hiroaki Kusawake(JAXA) |
| Secretary | Hiroo Sekiya(Aichi Inst. of Tech.) / Hiroaki Kusawake(Nagasaki Inst. of Applied Science) |
| Assistant | Yuu Yonezawa(Nagoya Univ.) / Yudai Furukawa(Fukuoka Univ.) / Kazufumi Yuasa(NTT Facilities) |
| Paper Information | |
| Registration To | Technical Committee on Energy Engineering in Electronics and Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Volumetric Energy Density of A Polymer Electrolyte Fuel Cell System using NaBH4 and H2O as Hydrogen Source Considering The Amount of Recovered Water Generated during Power Generation |
| Sub Title (in English) | |
| Keyword(1) | Sodium tetrahydroborate（NaBH4） |
| Keyword(2) | water |
| Keyword(3) | polymer electrolyte fuel cell |
| Keyword(4) | hydrogen |
| Keyword(5) | volumetric energy density |
| Keyword(6) | hydrogen generator |
| Keyword(7) | hydrogen source |
| 1st Author's Name | Ryosuke Masuo |
| 1st Author's Affiliation | Tokyo University of Science(TUS) |
| 2nd Author's Name | Nobukazu Hoshi |
| 2nd Author's Affiliation | Tokyo University of Science(TUS) |
| Date | 2023-03-06 |
| Paper # | EE2022-55 |
| Volume (vol) | vol.122 |
| Number (no) | EE-418 |
| Page | pp.pp.1-6(EE), |
| #Pages | 6 |
| Date of Issue | 2023-02-27 (EE) |