|
| 歧管结构对SOFC流动均匀性及性能影响数值分析 |
| Numerical analysis on the influence of manifold structure on flow uniformity and performance of solid oxide fuel cells |
| 投稿时间：2023-05-20 |
| DOI：10.13259/j.cnki.eri.2024.04.001 |
| 中文关键词: 固体氧化物燃料电池 流动均匀性 数值模拟 电池性能 |
| 英文关键词:solid oxide fuel cell flow uniformity numerical analysis cell performance |
| 基金项目: |
|
| 摘要点击次数: 1736 |
| 全文下载次数: 1058 |
| 中文摘要: |
| 固体氧化物燃料电池（SOFC）中的歧管结构对通道内流动均匀性和电池性能有着重要影响。为了提高固体氧化物燃料电池通道内的流动均匀性和电池性能，将圆柱形障碍物加入到长方形歧管中，并为其设计了10种不同的排列方式。通过比较不均匀分布因子，找出最佳的结构设计，并对其流体流动、组分传递、电化学反应和固体流体传热的多物理场耦合过程进行数值分析。研究发现，在歧管内加入圆柱形障碍物可以显著提高燃料电池通道内的流动均匀性。最优的歧管结构可将通道内的不均匀分布因子由传统结构的30.16%降至5.95%，同时，燃料利用率和燃料电池最大功率密度分别提高4.36%和6.33%。 |
| 英文摘要: |
| The manifold structure in solid oxide fuel cell (SOFC) has an important effect on flow uniformity and cell performance. To improve the flow uniformity and cell performance in the channel of SOFC, ten arrangements of cylindrical obstacles were designed by adding them into the rectangular manifold. The optimal structure design was obtained according to the non-uniform distribution factors. Numerical analysis on the fluid flow, species transfer, electrochemical reaction and solid-fluid heat transfer was carried out in the coupled multi-physical processes. It is found that adding cylindrical obstacles in the manifold can significantly improve the flow uniformity in the fuel cell channel. The optimal manifold structure reduces the non-uniform distribution factor in the channel from 30.16% to 5.95%. Meanwhile the fuel utilization and maximum power density of fuel cell increase by 4.36% and 6.33%, respectively. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
