Energy efficiency assessment of hydrogen recirculation ejectors for proton exchange membrane fuel cell (PEMFC) system
dc.contributor.author | Ding, H | |
dc.contributor.author | Dong, Y | |
dc.contributor.author | Zhang, Y | |
dc.contributor.author | Yang, Y | |
dc.contributor.author | Wen, C | |
dc.date.accessioned | 2023-06-09T09:43:25Z | |
dc.date.issued | 2023-06-08 | |
dc.date.updated | 2023-06-09T08:34:36Z | |
dc.description.abstract | The ejector is the core component for hydrogen recirculation in a proton exchange membrane fuel cell (PEMFC) system. However, in the past, the computational fluid dynamics (CFD) simulation of the ejector mainly focused on the influence of the change of the structural parameters on its performance, while the research on phase change condensation was lacking. Here, we proposed a two-phase flow model integrating the non-equilibrium phase change conservation equations and four categories of entropy transport equations, which analysed the phase change characteristics and the influence of different primary pressures on the property of ejector and internal entropy and exergy under the dry and wet gas models. We validated that the wet gas model has a good prediction ability with an MRE of only 2.53%. There was a significant difference between the dry and wet gas models, for example, the dry gas model predicted a larger Mach number and entrainment ratio, while the temperature and pressure were less than that of the wet gas model. Finally, the entropy and exergy were analysed, and the dry gas model overestimated the entropy generation, i.e, when the pressure of the primary inlet raised to 5.0 bar, the entropy generation overestimated by the dry gas model had reached 138.66 J kg-1K− 1 . The exergy destruction and exergy destruction ratio both increased with the rise of primary pressure. The dry gas model overestimated the exergy destruction and exergy destruction ratio, and the maximum overestimated values can reach 41.83 kJ/kg and 15.83%, respectively. | en_GB |
dc.description.sponsorship | National Natural Science Foundation of China | en_GB |
dc.identifier.citation | Vol. 346, article 121357 | en_GB |
dc.identifier.doi | https://doi.org/10.1016/j.apenergy.2023.121357 | |
dc.identifier.grantnumber | 52276159 | en_GB |
dc.identifier.grantnumber | 51876143 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/133322 | |
dc.identifier | ORCID: 0000-0002-4445-1589 (Wen, Chuang) | |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier | en_GB |
dc.rights | © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). | en_GB |
dc.subject | Hydrogen | en_GB |
dc.subject | PEMFC | en_GB |
dc.subject | Ejector | en_GB |
dc.subject | Exergy destruction | en_GB |
dc.subject | Non-equilibrium condensation | en_GB |
dc.subject | Proton exchange membrane fuel cell | en_GB |
dc.title | Energy efficiency assessment of hydrogen recirculation ejectors for proton exchange membrane fuel cell (PEMFC) system | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2023-06-09T09:43:25Z | |
dc.identifier.issn | 0306-2619 | |
exeter.article-number | 121357 | |
dc.description | This is the final version. Available on open access from Elsevier via the DOI in this record. | en_GB |
dc.description | Data availability statement: The research data supporting this publication are provided within this paper. | en_GB |
dc.identifier.eissn | 1872-9118 | |
dc.identifier.journal | Applied Energy | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2023-05-25 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2023-06-08 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2023-06-09T09:40:02Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2023-06-09T09:43:26Z | |
refterms.panel | B | en_GB |
refterms.dateFirstOnline | 2023-06-08 |
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Except where otherwise noted, this item's licence is described as © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).