一种带状支撑的纵流壳程换热器热力特性分析  

Analysis of Thermodynamic Characteristics in Shell Side of a Shell-and-tube Heat Exchanger with Ribbon Support

作　　者：王永庆[1] 靳遵龙[1] 郭晓迪[1] 雷佩玉[1] 郭月明[1] 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2013年第4期77-80,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：中国博士后科学基金资助项目(2011M501187);河南省基础研究计划资助项目(122300410046)

摘　　要：以纵流壳程换热器作为研究对象,对一种带状支撑纵流壳程换热器的壳程流体流动与传热特性进行了数值研究与分析.基于纵流壳程换热器的特性,建立了带状支撑结构的计算模型,对其流体流动与传热进行了数值计算,得到了壳程流场和温度分布等细观信息.对带状支撑换热器在不同几何参数及工况情况下的热力性能进行了综合分析,并将其特性与折流杆式支撑壳程特性进行了对比分析.研究表明,在相同的流动条件下,带状支撑结构壳程内,流体具有较强的湍动度,增大了的换热效果.The shell-and-tube heat exchanger with longitudinal fluid flow in shell side was selected as the re- search object. The characteristics of fluid flow and heat transfer in shell side of shell-and-tube heat exchanger with a ribbon support structure were studied numerically. Based on the characteristics of fluid flow and heat- transfer in shell side of heat exchanger, the periodic unit duct model was presented and adopted in the numeri- cal calculations for heat exchanger. The detailed information of the fluid flow and temperature field were ob- tained. The thermodynamic characteristics in shell side of the ribbon support structures with different parame- ters were analyzed comprehensively. In addition, the characteristics were compared with that of rod baffle heat exchanger, another heat exchanger with longitudinal fluid flow in shell side. It is concluded that in the same condition, in shell side with a ribbon support structure, fluid is of bigger turbulent intensity, which enhances heat transfer.

关 键 词：换热器 纵向流 带状支撑结构 热力特性 

分 类 号：TK172[动力工程及工程热物理—热能工程]