Multimode sensing technique for carbon monoxide plume tracking and forecasting for reliable field deployed air breathing PEM fuel cell operation

S. Mitra, P. Ramesh, M. Bhattacharyya, S. Duttagupta
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引用次数: 4

Abstract

An air breathing proton exchange membrane fuel cell (PEMFC) combines H2 or reformed hydrocarbon fuel and O2 from air to produce electrical energy. The efficiency of nano-scale platinum catalysts at the fuel cell cathode is highly susceptible to carbon monoxide (CO) poisoning and results in irreversible damage to the electrode. Higher CO2 level in air does not induce catalytic poisoning, however it lowers the partial pressure of O2 at cathode. This results in a drop of fuel cell output power. Our work proposes a combined range sensing and proximate sensing based approach for tracking of smoke plume. Our approach helps to tackle the PEMFC degradation issue by forecasting nature of the plume in vicinity of the fuel cell. The simulation results quantify the dynamic changes in PEMFC electrode resistance with respect to higher levels of CO concentration in air. Drop in fuel cell output power with respect to higher mass fractions of CO2 and ambient humidity are also quantified in this work. The proposed threat prediction based approach helps to enhance the lifetime of a field deployed air PEMFC by reducing and/or inhibiting the air contaminant based fuel cell degradation mechanisms.
多模传感技术用于可靠的现场部署呼吸式PEM燃料电池的一氧化碳羽流跟踪和预测
空气呼吸式质子交换膜燃料电池(PEMFC)将氢气或重整碳氢化合物燃料与空气中的O2结合起来产生电能。纳米级铂催化剂在燃料电池阴极上的效率极易受到一氧化碳(CO)中毒的影响,并导致电极的不可逆损伤。空气中较高的CO2浓度不会引起催化中毒,但会降低阴极O2的分压。这导致燃料电池输出功率下降。我们的工作提出了一种结合距离传感和近似值传感的烟羽跟踪方法。我们的方法通过预测燃料电池附近羽流的性质,有助于解决PEMFC降解问题。模拟结果量化了PEMFC电极电阻在空气中CO浓度较高时的动态变化。在这项工作中,燃料电池输出功率的下降与二氧化碳质量分数和环境湿度的增加有关。所提出的基于威胁预测的方法通过减少和/或抑制基于空气污染物的燃料电池降解机制,有助于提高现场部署的空气PEMFC的使用寿命。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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