管内对流换热影响因素及其强化分析  

Influencing Factors and Enhancing Methods of Convective Heat Transfer in Tubes

作　　者：陈观生[1] 杜文杰[1] 杨景泉[1] 李文丰[1] 李学宇[1] 梁适[1] 张莉[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《广东工业大学学报》2012年第1期23-26,31,共5页Journal of Guangdong University of Technology

基　　金：广东工业大学重大项目培育专项资助项目(092006);广东省大学生创新实验项目(4021022126)

摘　　要：从影响管内对流换热的因素出发,对近年来国内外学者的研究成果进行了综合分析,包括管内流体流动状态、表面形状、物性、脉动等对管内对流换热的影响.介绍了利用缩放管、金属泡沫管、纳米流体、高压电场等强化换热的方法.对中高温太阳能热利用系统中大温差管内对流换热的应用及其强化方法进行了展望.Some factors were summarized systematically according to the research in China and abroad in recent years,including convection flow state,phase-transformation,geometric factors,fluid pulse,fluid physical properties and viscosities.At the same time,some methods of enhancing heat transfer in tubes were also summarized,such as additives,electro-hydro-dynamical,metal foam filled pipes etc.Finally,the characteristics and the method of heat transfer enhancement were analyzed in high-medium temperature solar power systems.

关 键 词：管内 对流 换热 强化换热 

分 类 号：TK513[动力工程及工程热物理—热能工程]