化学工程2016，Vol.44Issue(2)：23-27,57,6.DOI:10.3969/j.issn.1005-9954.2016.02.005
折流板结构对换热器壳程性能影响的定量研究
Quantitative research on effect of different baffle structures on performance of heat exchanger′s shell side
摘要
Abstract
The pressure drop,heat transfer coefficient and comprehensive performance of segmental baffles and continuous helical baffles heat exchangers were quantitatively compared by numerical simulation,based on CFD analysis software Fluent and RNG k-εmodel.Local flow field and temperature field of heat exchangers with different baffle structures were further analyzed.The results show that the shell side velocity field and temperature field distribution of segmental baffles heat exchanger present obvious discontinuity.When the distance between two adjacent baffles of segmental baffles and pitch of continuous helical baffles are the same,and pitch of baffles is smaller,continuous helical baffles can significantly improve heat transfer coefficient,but the structure of baffle has little effect on comprehensive performance.Yet when the pitch of baffles increases to an extent,continuous helical baffles can obviously improve comprehensive performance,but the structure of baffle makes little difference on heat transfer coefficient.The results provide the theoretical basis for the selection of baffle structures.关键词
换热器/连续螺旋折流板/弓形折流板/数值研究Key words
heat exchangers/continuous helical baffles/segmental baffles/numerical research分类
能源科技引用本文复制引用
王珂,许伟峰,王丹,靳遵龙,刘敏珊..折流板结构对换热器壳程性能影响的定量研究[J].化学工程,2016,44(2):23-27,57,6.基金项目
国家自然科学基金资助项目(51476147) （51476147）
中国博士后科学基金资助项目(2014M552011) （2014M552011）
