{"title":"竹状微管固体氧化物燃料电池的数值研究","authors":"","doi":"10.1016/j.ijhydene.2024.09.037","DOIUrl":null,"url":null,"abstract":"<div><p>An innovative structure of segmented-in-series tubular solid oxide fuel cell, the bamboo-like optimized the current collection and achieve higher power density compared with that of the cell with the same axial length. In this study, a comprehensive three-dimensional (3D) numerical model of a bamboo-like micro-tubular solid oxide fuel cell (uT-SOFC) coupling the electrochemical reactions and mass, momentum, heat transfer processes and thermal stress, is developed by using the finite element method for the first time. Investigating the internal conditions under steady-state conditions to understand mass transfer, heat transfer processes, and mechanical states of the bamboo-like uT-SOFCs. The steam flow exhibits limited diffusion in the region of the anode at the internal end of the interconnector, creating a concentration gradient of H<sub>2</sub>O that adversely affects the cell performance. The maximum mole fraction of H<sub>2</sub>O in this region of two-cells and three-cells in series is increased by 185 % and 112 % respectively compared to the overall average of the cells. The interconnector shortens the current transmission path of the cells, and exhibits high current collection efficiency. This structure achieves a lower temperature while attaining higher power density compared to the same axial length cell at 973 K. The temperature of three-cells in series decreased by 3 K–5 K compared with two-cells in series. The thermal stress induced by the interconnector on the cells is minor, and the thermal expansion displacement caused by the interconnector is only approximately 7 μm–8 μm. This study revealed its internal conditions, and provides an insight into the bamboo-like structure.</p></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical study of a bamboo-like micro-tubular solid oxide fuel cell\",\"authors\":\"\",\"doi\":\"10.1016/j.ijhydene.2024.09.037\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>An innovative structure of segmented-in-series tubular solid oxide fuel cell, the bamboo-like optimized the current collection and achieve higher power density compared with that of the cell with the same axial length. In this study, a comprehensive three-dimensional (3D) numerical model of a bamboo-like micro-tubular solid oxide fuel cell (uT-SOFC) coupling the electrochemical reactions and mass, momentum, heat transfer processes and thermal stress, is developed by using the finite element method for the first time. Investigating the internal conditions under steady-state conditions to understand mass transfer, heat transfer processes, and mechanical states of the bamboo-like uT-SOFCs. The steam flow exhibits limited diffusion in the region of the anode at the internal end of the interconnector, creating a concentration gradient of H<sub>2</sub>O that adversely affects the cell performance. The maximum mole fraction of H<sub>2</sub>O in this region of two-cells and three-cells in series is increased by 185 % and 112 % respectively compared to the overall average of the cells. The interconnector shortens the current transmission path of the cells, and exhibits high current collection efficiency. This structure achieves a lower temperature while attaining higher power density compared to the same axial length cell at 973 K. The temperature of three-cells in series decreased by 3 K–5 K compared with two-cells in series. The thermal stress induced by the interconnector on the cells is minor, and the thermal expansion displacement caused by the interconnector is only approximately 7 μm–8 μm. This study revealed its internal conditions, and provides an insight into the bamboo-like structure.</p></div>\",\"PeriodicalId\":337,\"journal\":{\"name\":\"International Journal of Hydrogen Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-09-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Hydrogen Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0360319924037467\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360319924037467","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Numerical study of a bamboo-like micro-tubular solid oxide fuel cell
An innovative structure of segmented-in-series tubular solid oxide fuel cell, the bamboo-like optimized the current collection and achieve higher power density compared with that of the cell with the same axial length. In this study, a comprehensive three-dimensional (3D) numerical model of a bamboo-like micro-tubular solid oxide fuel cell (uT-SOFC) coupling the electrochemical reactions and mass, momentum, heat transfer processes and thermal stress, is developed by using the finite element method for the first time. Investigating the internal conditions under steady-state conditions to understand mass transfer, heat transfer processes, and mechanical states of the bamboo-like uT-SOFCs. The steam flow exhibits limited diffusion in the region of the anode at the internal end of the interconnector, creating a concentration gradient of H2O that adversely affects the cell performance. The maximum mole fraction of H2O in this region of two-cells and three-cells in series is increased by 185 % and 112 % respectively compared to the overall average of the cells. The interconnector shortens the current transmission path of the cells, and exhibits high current collection efficiency. This structure achieves a lower temperature while attaining higher power density compared to the same axial length cell at 973 K. The temperature of three-cells in series decreased by 3 K–5 K compared with two-cells in series. The thermal stress induced by the interconnector on the cells is minor, and the thermal expansion displacement caused by the interconnector is only approximately 7 μm–8 μm. This study revealed its internal conditions, and provides an insight into the bamboo-like structure.
期刊介绍:
The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc.
The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.