空冷型PEMFC电堆输出功率与热特性试验研究
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摘要
主要对500 W空冷型PEMFC电堆进行了电堆负载动态阶跃响应、单电池电压均一性以及电堆内部温度分布实验研究.通过变载实验,发现电堆每次变载时电压都出现过冲现象,同时同一电流下对应的温度和电压,加载过程要比卸载过程低;单电池电压随着负载增加,波动越来越大,距离阳极排水口较远的单电池最容易发生水淹,位于电堆中部位置的NO.13~NO.21单电池电压均一性表现较好;电堆内部温度分布不均匀,与位置有很大关系,在不同负载下,电堆底部温度要比顶部温度高.
The dynamic load response of the stack,the uniformity of the cell voltage,and the internal temperature distribution of the stack are performed for a 500 W air-cooled PEMFC stack. Through variable load experiments,it is found that the voltage of the stack is overshooted while load is changed. At the same time,the corresponding temperature and voltage under the same current,the loading process is lower than the unloading process. With the increase of the load,the cell voltage will fluctuate more and more. Single cells far from the anode outlet are most likely to be flooded,and the voltage uniformity of the NO. 13 ~ NO. 21 cell located in the middle of the stack is performs well.The temperature distribution inside the stack is not uniform and has a large relationship with the location. Under different loads,the temperature at the bottom of the stack is higher than that at the top.
The dynamic load response of the stack,the uniformity of the cell voltage,and the internal temperature distribution of the stack are performed for a 500 W air-cooled PEMFC stack. Through variable load experiments,it is found that the voltage of the stack is overshooted while load is changed. At the same time,the corresponding temperature and voltage under the same current,the loading process is lower than the unloading process. With the increase of the load,the cell voltage will fluctuate more and more. Single cells far from the anode outlet are most likely to be flooded,and the voltage uniformity of the NO. 13 ~ NO. 21 cell located in the middle of the stack is performs well.The temperature distribution inside the stack is not uniform and has a large relationship with the location. Under different loads,the temperature at the bottom of the stack is higher than that at the top.
引文
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[15]汪茂海,郭航,马重芳,等.质子交换膜燃料电池表面温度分布的测量[J].电源技术,2004,28(12):764-766.
[2]詹姆斯·拉米尼,安德鲁·迪克斯.燃料电池系统:原理·设计·应用[M].北京:科学出版社,2006.
[3]衣宝廉.燃料电池:原理、技术、应用[M].北京:化学工业出版社,2003.
[4]Jian Qifei,Zhao Yang,Wang Haoting.An experimental study of the dynamic behavior of a 2k W proton exchange membrane fuel cell stack under various loading conditions[J].Energy,2015,80:740-745.
[5]刘永峰,王娜.进气温度对质子交换膜燃料电池性能影响的试验研究[J].北京建筑工程学院学报,2016,32(2):46-50.
[6]Kim S,Hong I.Effects of humidity and temperature on a proton exchange membrane fuel cell(PEMFC)stack[J].Journal of Industrial&Engineering Chemistry,2008,14(3):357-364.
[7]陈奔,王俊,涂正凯,等.基于高氢气利用率的质子交换膜燃料电池运行特性研究[J].工程热物理学报,2016,37(2):372-377.
[8]曹涛锋,丁靖,母玉同,等.质子交换膜燃料电池动态响应性能实验研究[J].工程热物理学报,2016,37(4):835-839.
[9]朱晓舟,陈民武,刘湘东,等.空冷型PEMFC阳极排气方法实验研究[J].储能科学与技术,2018(1):118-122.
[10]陈冬浩,卜庆元,陈维荣,等.空冷型PEMFC阳极排气周期实验研究[J].电池,2015,45(1):3-5.
[11]裴后昌,周兵,丁刚强,等.风冷质子交换膜燃料电池的运行特性[J].电池工业,2011,16(6):333-336.
[12]戴朝华,史青,陈维荣,等.质子交换膜燃料电池单体电压均衡性研究综述[J].中国电机工程学报,2016,36(5):1289-1302.
[13]Jian Qifei,Ma Guangqing,Qiu Xiaoliang.Influences of gas relative humidity on the temperature of membrane in PEMFC with interdigitated flow field[J].Renewable Energy,2014,62(3):129-136.
[14]田玉冬,朱新坚,曹广益.质子交换膜燃料电池的温度实验分析[J].电池,2005,35(3):221-222.
[15]汪茂海,郭航,马重芳,等.质子交换膜燃料电池表面温度分布的测量[J].电源技术,2004,28(12):764-766.