燃料电池汽车散热器的换热效率研究  

Heat exchange efficiencies of fuel cell vehicle radiator

作　　者：曾辉杰 常国峰[1,2] 倪淮生[1,3] 俞嘉麟 

机构地区：[1]同济大学新能源汽车工程中心,上海201804 [2]同济大学汽车学院,上海201804 [3]上海燃料电池汽车动力系统有限公司,上海201804

出　　处：《电源技术》2014年第2期255-258,共4页Chinese Journal of Power Sources

基　　金：国家"863"高科技资助项目(2011AA11A265)

摘　　要：质子交换膜燃料电池工作温度低、热负荷大,如何使热管理系统在工作时充分发挥出其性能,是燃料电池热管理工作的重点。根据燃料电池汽车的热特性和工作工况,以燃料电池汽车热管理系统散热器的换热效率为指标,通过小型风洞实验,对燃料电池汽车散热器的换热效率影响因素进行研究。通过计算分析得到:在燃料电池汽车运行工况下,可通过调节工质的运行参数,提高散热器的换热效率。去离子水作为冷却液的散热器的效率要比采用其与乙二醇混合溶液作为冷却液的散热器的换热效率高;散热器换热效率随冷却液流量的增加而逐渐增大,但是冷却液流量越大,换热效率增加的幅度逐渐减小;散热器换热效率随空气流速的增加而减小,空气流速越大,换热效率减小的幅度越小;散热器换热效率随空气侧(冷流体侧)入口温度的减小而降低。The working temperature of PEMFC was low, and the heat load was heavy. The most important part of fuel cell thermal management system was how to make the thermal management system work efficiently. The thermal characteristics and work station of fuel cell were considered. The radiator heat exchange efficiency was regarded as an index. An experiment of mini-wind tunnel was taken. The influence parameters of heat exchange efficiency were investigated. The calculation result shows that the heat exchange efficiency can be improved by adjusting the operating conditions. The heat exchange efficiency of radiator with the coolant of deionized water was higher than radiator with the coolant of ethylene glycol solvent. Heat exchange efficiency was gradually increasing with the increase of the coolant flow rate, but the extent was gradually reduced with the increasing of the heat exchange efficiency; it was gradually decreasing with the increase of air velocities and with the decrease of air inlet temperatures.

关 键 词：燃料电池 散热器 换热效率 风洞实验 

分 类 号：TM911[电气工程—电力电子与电力传动]