常压燃料电池系统膜增湿器与焓轮增湿器性能比较  

Comparative study of membrane humidifier and enthalpy wheel humidifier in low pressure fuel cell systems

作　　者：程良奖[1] 李保群[1] 曾宏[1] 

机构地区：[1]武汉第二船舶设计研究所,湖北武汉430064

出　　处：《舰船科学技术》2012年第7期72-75,78,共5页Ship Science and Technology

摘　　要：为比较用于大功率燃料电池系统的膜增湿器和焓轮增湿器性能,基于一维扩散方程建立了膜增湿器性能分析模型,基于表面扩散方程建立了焓轮增湿器性能分析模型,模拟了各操作参数对二者性能的影响,模拟结果与实验数据符合良好。分析表明,低空气流量、高进气温度和高转轮转速有利于提高焓轮增湿器表面扩散系数,膜增湿器内水含量梯度随空气流量增加而减小并在进气温度约40℃时达到最小值;焓轮增湿器动态响应能力优于膜增湿器。Performance of membrane humidifier and enthalpy wheel humidifier in low pressure fuel cell system is compared simultaneously.Membrane humidifier model is developed based on one dimensional diffusion equation and enthalpy wheel humidifier model is developed based on surface diffusion equation. Effects of operating parameters on humidifiers performance are simulated and the results agree well with experimental data.It is found low air mass flow rate,high air intake temperature and high wheel speed enhance surface water diffusion coefficient in enthalpy wheel humidifier.Water content gradient in membrane humidifier gets lower as air mass flow rate gets larger and it reaches the lowest value while air intake temperature is around 40 ℃.Transient performance of enthalpy wheel humidifier would be better than that of membrane humidifier.

关 键 词：膜增湿器 焓轮增湿器 常压 燃料电池系统 

分 类 号：TM911.4[电气工程—电力电子与电力传动]