凹凸变化壁面强化传热机理与传热性能的研究  

Study on Heat Transfer Mechanism and Characteristics of Concave and Raised Surface

作　　者：刘振艳[1] 刘振义[1] 宋继田[1] 李丁[1] 王洪玲[1] 

机构地区：[1]天津科技大学机械工程学院,天津300222

出　　处：《节能技术》2007年第4期305-308,共4页Energy Conservation Technology

摘　　要：介绍了一种近年来开发的板式外流降膜蒸发器中的凹凸变化壁面的传热元件;分析讨论了其强化传热的机理及其传热性能;建立了凹凸变化壁面上降落液膜的传热系数准数关联式,为其应用于工业生产提供了参考数据。The concave and raised surface in the plate film evaporator is introduced, which has been developed for the several years. This paper analyzes heat - transfer mechanism and capability of the concave and raised surface, and establishs the heat transfer coefficient and performance of this kind of surface, which will provide reliable data for industry production.

关 键 词：凹凸变化壁面 强化传热 传热系数 

分 类 号：TK124[动力工程及工程热物理—工程热物理]