流体机械2024，Vol.52Issue(6)：25-32,8.DOI:10.3969/j.issn.1005-0329.2024.06.004
SOFC阴极空气预热器耦合传热特性及参数影响分析
Coupled heat transfer characteristics and parameter influence analysis of SOFC cathode air preheater
摘要
Abstract
For the SiC-based cathodic air preheater,a novel SOFC high temperature heat exchanger,the coupled radiation-conduction-convection heat transfer and parameter influence characteristics between flue gas and air under extremely high temperature conditions were investigated.The DO model in ANSYS Fluent was utilized to analyze the effects of the radiation heat transfer and absorption coefficient of high-temperature flue gas on performance of the heat exchanger,and the simulation results were compared with the S2S model and non-radiation model.The effects of wall emissivity and flue gas inlet temperature on coupled heat transfer were also studied.The results show that when the flue gas inlet temperature is 800～1 100℃,influence of radiation heat transfer is very important,but the effects of flue gas absorption coefficient and radiation can be ignored.Meanwhile,the effects of the wall emissivity and flue gas inlet temperature on the coupled heat transfer performance are very significant,the higher the wall emissivity and flue gas inlet temperature,the higher the outlet temperature of air.The research results can provide a theoretical basis for the design of silicon carbide based cathode air preheaters.关键词
SOFC/阴极空气预热器/碳化硅/热辐射/耦合传热特性Key words
SOFC/cathode air preheater/SiC/heat radiation/coupled heat transfer characteristics分类
机械制造引用本文复制引用
宋嘉梁,陈永东,于改革,邹宏伟..SOFC阴极空气预热器耦合传热特性及参数影响分析[J].流体机械,2024,52(6):25-32,8.基金项目
国家重点研发计划(2022YFB3306401) （2022YFB3306401）
国机集团青年科技基金重点项目(QNJJ-ZD-2022-06) （QNJJ-ZD-2022-06）
合肥通用机械研究院有限公司博士科技基金(2020011749) （2020011749）
