摘要
为探究不同使用条件对含水乙醇重整器性能的影响,对重整器性能进行仿真,为后续重整器结构及发动机性能优化提供依据.利用Solid Works和Fluent分别进行建模和换热仿真,搭建含水乙醇重整器性能试验台架,根据试验数据验证模型的正确性,探究不同使用条件对重整器性能的影响.结果表明:重整器蒸发率与重整率整体上随入口流量的增大而减少,随废气入口温度的升高而增大;在低温小流量下,蒸发率与重整率对含水乙醇入口流量与废气入口温度变化较为敏感,高温大流量下影响较小;在工作范围内,重整器蒸发率集中在25%~70%,重整率集中在13%~28%;相同工况下,选用75%含水乙醇作为原料重整率略低于选用85%含水乙醇,但重整产物中H2含量高于选用85%含水乙醇.
In order to explore the influence of different operating conditions on the performance of hydrous ethanol reformer,the performance of the reformer was simulated to provide basis for subsequent reformer structure and engine performance optimization.Solid Works and Fluent were used for modeling and heat exchange simulation respectively to build a performance test bed for hydrous ethanol reformer.The correctness of the model was verified according to the test data,and the influence of different operating conditions on the reformer performance was explored.The results show that the overall evaporation rate and reforming rate of the reformer decrease with the increase of inlet flow rate and increase with the increase of exhaust gas inlet temperature.At low temperature and small flow rate,evaporation rate and reforming rate are more sensitive to the changes of water-containing ethanol inlet flow rate and exhaust gas inlet temperature,but at high temperature and large flow rate,evaporation rate and reforming rate have less influence on the changes of flow rate and temperature.In the working range,the evaporation rate of the reformer is distributed between 25%and 70%,and the reforming rate is concentrated between 13%and 28%.Under the same conditions,the reforming rate of 75%hydrous ethanol is slightly lower than that of 85%hydrous ethanol,but the H2 content in the reformate is higher than that of 85%hydrous ethanol.
作者
王楠
张新塘
曹雨奇
WANG Nan;ZHANG Xintang;CAO Yuqi(School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China)
出处
《武汉理工大学学报（交通科学与工程版）》
2020年第3期564-569,共6页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
含水乙醇重整器
换热仿真
模型建立
hydrous ethanol reformer
heat transfer simulation
model building
