水表面蒸发速率的实验研究  

An experimental study on water surface evaporation rate

作　　者：耿江涛[1,2] 李相一[1] 邢广磊[1,2] 孙公权[1] 衣宝廉[1] 

机构地区：[1]中国科学院大连化学物理研究所燃料电池研究室,辽宁大连116023 [2]中国科学院研究生院,北京100039

出　　处：《电源技术》2010年第5期470-472,共3页Chinese Journal of Power Sources

摘　　要：对非自然界环境条件[即温度20～90℃、湿度30%～95%(RH)、压力1×105～4×105Pa及空气流速1～10m/s]下水的表面蒸发速率进行了实验研究。经过对实验数据的回归处理,得到了水的表面蒸发速率与诸条件间的经验关系式,在实验范围内其复相关系数达0.99。此经验式的适用范围涵盖质子交换膜燃料电池的运行条件,故可将其用于燃料电池内部水的动态平衡计算及基于表面蒸发机理的增湿器的设计计算。An experimental study on water surface evaporation rate under non-natural conditions （temperature： 20-90 ℃; humidity, 30%～95% RH; pressure, 1×105-4×105 Pa; air velocity, 1-10 m/s） was carried out. By multiple regression analysis of experimental data, a simple empirical equation of water surface evaporation rate was obtained, and its multiple correlation coefficient was approximately 0.99. Because the applicable range of this equation covers the operation conditions of proton exchange membrane fuel cell, the empirical equation can be used in the calculation of dynamic water balance within fuel cell stack and the design of humidifier based on water surface evaporation mechanism.

关 键 词：水表面蒸发速率 经验关系式 质子交换膜燃料电池 水管理 

分 类 号：TM911.4[电气工程—电力电子与电力传动]