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本文以透过燃料电池增湿系统中多孔介质板的热湿传递过程为研究对象,建立了实验系统,测量并比较了高温高湿气体(增湿气体)透过多孔介质板对低温低湿气体(被增湿气体)进行加热加湿时,气体的相对流向、温度与相对湿度等对多孔介质板热湿传递特性的影响。结果表明,在使用相同的多孔介质板的前提下,使用逆流流向、提高增湿气体进口温度和相对湿度对多孔介质板两侧的换热和水分传递量的提高更加有利;同时,使用逆流流向、提高增湿气体进口温度以及降低其相对湿度有助于水分回收率的提高。
In this paper, through the heat and moisture transfer process of porous media plate in humidification system of fuel cell, the experimental system was set up and the effects of high temperature and high humidity gas (humidified gas) through porous media on the performance of low temperature and low humidity gas Humidified gas) is heated and humidified, the relative flow of gas, temperature and relative humidity on the porous medium plate heat and moisture transfer characteristics. The results show that under the premise of using the same porous media plate, it is more advantageous to use the countercurrent flow to increase the inlet temperature and relative humidity of the humidified gas to increase the heat transfer and moisture transfer on both sides of the porous media plate. At the same time, , Increasing the inlet temperature of the humidified gas and lowering its relative humidity contribute to the improvement of the water recovery rate.