Analysis of steady state heating configuration for high-temperature proton exchange membrane fuel cell based on multi-physical numerical modelling
Analysis of steady state heating configuration for high-temperature proton exchange membrane fuel cell based on multi-physical numerical modelling
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DOI：
10.1016/j.electacta.2016.10.172
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发表时间：
2016-12
影响因子：
6.6
通讯作者：
R. A. Rasheed;S. Chan
中科院分区：
文献类型：
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作者：
R. A. Rasheed;S. Chan
建立了高温质子交换膜燃料电池（HT-PEMFC）电堆稳态加热结构的三维模型。通过对简化的部分单电池进行数值模拟，研究了特定的加热配置的温度分布，强调膜。研究了阳极入口温度（AIT）和阴极入口温度（CIT）对温度分布的影响。结果表明，在气体入口附近，特别是靠近垂直边缘处，可以经历低温，这受到阳极入口温度的影响，特别是受到阴极入口温度的影响。因此，控制阴极入口温度以确保靠近阴极入口的膜温度不会降低到对燃料电池性能有害的值是至关重要的。具体地说，阴极入口温度高于100 ° C可以保证靠近阴极气体入口的膜温度不降低到150 ° C以下。此外，增加内部空气速度被发现，以减少最高膜温度和最高电池温度经历的双极板显着。最后，基于典型1千瓦电堆的能量分析表明，提高阳极入口温度可以显着降低总体能量需求。
A three-dimensional model is developed to investigate the steady state heating configuration for a high temperature proton exchange membrane fuel cell (HT-PEMFC) stack. By numerically modelling a simplified partial single cell, a particular heating configuration is investigated for temperature distribution, emphasising on the membrane. The effects of the Anode inlet temperature (AIT) and Cathode inlet temperature (CIT) on the temperature distribution are investigated. The results indicate that low temperatures can be experienced near the gas inlets, especially close to the vertical edges, which are affected by the Anode inlet temperature, and especially by the Cathode inlet temperature. Thus, it is critical to control the Cathode inlet temperature to ensure that the membrane temperature close to the cathode inlet, does not reduce to a value that is detrimental to the fuel cell performance. Specifically, a Cathode inlet temperature of higher than 100 ° C can ensure that the membrane temperature close to the cathode gas inlet, does not reduce below 150 ° C. In addition, increasing the interior air velocity is found to reduce the maximum membrane temperature and the maximum cell temperature experienced at the bipolar plates significantly. Finally, an energy analysis based on a typical 1-kW stack suggests that increasing the Anode inlet temperature can reduce the overall energy requirement significantly.