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首页> 外文期刊>International Journal of Heat and Mass Transfer >A new humidification and heat control method of cathode air for a PEM fuel cell stack
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A new humidification and heat control method of cathode air for a PEM fuel cell stack

机译：用于PEM燃料电池堆的阴极空气增湿和热控制的新方法

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摘要

A new method of humidification and heat controls for a PEM fuel cell stack using non-contact laser absorption spectroscopy is presented in this study. The focus of this experiment is to follow the load current variation and its effect on the resistance and performance. Optimal relative humidity gases not only decrease the total losses in the membrane-electrode-assembly (MEA), but also eliminate channel flooding. By controlling humidified air and heat, it is shown that the tested stack has an improvement in performance as compared to fully humidified gases especially under a heavy-load condition. In this paper, a proposed humidification and temperature control strategy based on humidifiers and gas heaters is presented and discussed in detail. The results indicate that the humidification and temperature control strategy suggested in this experimental study can precisely control the air relative humidity, temperature and flow rate, and increase overall power output by 16% from PEM fuel cell stack.
机译：本研究提出了一种使用非接触式激光吸收光谱法对PEM燃料电池堆进行加湿和热控制的新方法。该实验的重点是跟踪负载电流变化及其对电阻和性能的影响。最佳的相对湿度气体不仅可以减少膜电极组件（MEA）中的总损耗，而且可以消除通道溢流。通过控制加湿的空气和热量，表明与完全加湿的气体相比，被测试的烟囱在性能上有所改善，尤其是在重载条件下。本文提出并详细讨论了基于加湿器和燃气加热器的加湿和温度控制策略。结果表明，本实验研究中提出的加湿和温度控制策略可以精确控制空气的相对湿度，温度和流量，并使PEM燃料电池堆的总功率输出增加16％。

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