Parameters and their impacts on the temperature distribution and thermal gradient of solid oxide fuel cell
Parameters and their impacts on the temperature distribution and thermal gradient of solid oxide fuel cell
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DOI：
10.1016/j.apenergy.2019.03.034
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发表时间：
2019-05
期刊：
影响因子：
11.2
通讯作者：
E. Guk;V. Venkatesan;S. Babar;L. Jackson;Jung-Sik Kim
中科院分区：
文献类型：
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作者：
E. Guk;V. Venkatesan;S. Babar;L. Jackson;Jung-Sik Kim
由于某些技术问题，固体氧化物燃料电池的商业化潜力受到阻碍。其中之一是电池结构在运行期间的热梯度，这可能会降低系统的性能。在这项研究中，新开发的多点热传感器部署在阴极上，以了解各种因素的影响，包括电池的工作温度、燃料流量和牵引电流密度对温度分布及其稳定性的影响。在这里，我们报告说，在开路电压和负载条件下，由于燃料交叉而导致的氢气直接氧化是对电池平均温度增量影响最大的因素，而氢气的电化学氧化是对负载期间电池温度梯度影响最大的因素。电池表面的温度分布与温度变化源之间建立了关系，从而可以识别相关参数。
The commercialisation potential of Solid Oxide Fuel Cell is hindered due to certain technical issues. One of these is the thermal gradient across the cell structure during its operational period that can deteriorate the system’s performance. In this study, a newly developedmulti-point thermal sensoris deployed across the cathode to understand the impact of various factors including cell’s operating temperature, fuel flow rate and drawing current density on temperature distribution and its stability. Here we report that direct oxidation of hydrogen due to fuel crossover has been the most impactful contributor for the cell’s average temperature increment during both open circuit voltage and loading conditions, while electrochemical oxidation of hydrogen is the most impactful contributor for cell temperature gradient during loading. A relationship has been established between the temperature profile of the cell surface and the source of the temperature variation which allows identification of the responsible parameter.