溴化锂风冷垂直降膜吸收过程数值模拟  

Numerical simulation for air cooling vertical falling film absorption of LiBr solution

作　　者：程文龙[1] 陈则韶[1] 

机构地区：[1]中国科学技术大学热科学和能源工程系,安徽合肥230027

出　　处：《制冷学报》2001年第4期11-15,共5页Journal of Refrigeration

基　　金：中国科学技术大学高水平大学建设专向基金

摘　　要：通过对溴化锂溶液在降膜吸收过程中传热、传质特性的分析 ,建立了垂直降膜吸收过程的数学模型。在这个模型中 ,考虑了对流及变膜厚等因素对传热、传质性能的影响。并对风冷垂直管降膜吸收过程进行了数值模拟。得出的结论对垂直降膜吸收器的设计和优化具有指导意义。Based on the study of the characteristics of heat and mass transfer of absorption,a numerical model to simulate the process of absorption of LiBr solution is established. In this numerical model,both of the convection in falling film and thickness variation of falling fillm are considered. The heat and mass problem of air cooling absorption is studied by the numerical method. The results of this paper will be in favor of the design and optimization of vertical falling film absorber.

关 键 词：降膜吸收器 降膜 传质性能 垂直管 传质特性 传热 溴化锂溶液 风冷 数值模拟 对流 

分 类 号：TB651[一般工业技术—制冷工程] TQ028[化学工程]