摘要
为掌握新型高效帘式折流片换热器壳程流动死区分布规律,采用CFD方法得到该换热器中停留时间分布(RTD)数据,研究表明:帘式折流片换热器壳程流动死区大小随着Re的增加而降低;流动死区分布规律受折流栅排列方式的影响,相同壳程Re下,折流栅对称排列时死区大于折流栅同向排列时的死区,且均小于折流板换热器壳程流动死区.当Re=5 000,10 000,15 000时,折流栅对称排列时帘式折流片换热器壳程死区分别为折流板换热器壳程死区的59.23%、49.08%、46.06%;折流栅同向排列时分别为折流板换热器壳程死区的29.94%、25.32%、19.80%.
In order to grasp the distribution rule of flow dead zone in shell side of shutter baffle heat exchang- er, which is a new and high efficiency heat exchanger, the residence time distribution （RTD） data was ob- tained and used to analysis by using CFD in this paper. The results showed that the size of flow dead zone in shell side of shutter baffle heat exchanger was reduced with increase of Reynolds number. The distribution of flow dead zone was influenced by assemble types of shutter baffles. When the shutter baffle symmetrical ar- rangement the size of flow dead zone is larger than that of co-rotating at the same Reynolds number, and the size of flow dead zone of shutter baffle heat exchanger is less than that of baffle plate heat exchanger. When Re = 5 000 ,Re = 10 000 and Re = 15 000 ,the dead zone in shell side of shutter baffle heat exchanger with shutter baffle symmetrical arrangement are respectively 59.23% ,49.08% ,46.06% of that in baffle plate heat ex- changer, and the dead zone in shell side of shutter baffle heat exchanger with shutter baffle co-rotating ar- rangement are respectively 29.94% ,25.32% ,19.80% of that in baffle plate heat exchanger.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2013年第6期116-119,共4页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(51006092)
关键词
流动死区
时间停留分布
帘式折流片
flow dead zone
residence time distribution
shutter baffle
作者简介
古新（1978-），男，山东济宁人，郑州大学副教授，博士，主要从事重大过程装备强化传热机理研究工作，E—mail：guxin@ZZU．edu．cn．
