微胶囊相变悬浮液传热特性的实验研究  

Experimental Research on Heat Transfer Characteristics in Microencapsulated Phase Change Material Suspensions

作　　者：王利[1] 赵兵全[1] 赵镇南[1] 

机构地区：[1]天津大学机械工程学院,天津300072

出　　处：《煤气与热力》2006年第12期66-70,共5页Gas & Heat

基　　金：国家自然科学基金资助项目(50276044)

摘　　要：介绍了微胶囊相变悬浮液的研究进展。建立了微胶囊相变悬浮液层流传热特性的实验系统，对其在定热流密度加热条件下的管内层流强迫对流传热特性进行了测试和分析。影响传热强化的主要因素为雷诺数及微胶囊的体积分数，斯蒂芬数的影响很小，可以忽略不计。微胶囊相变悬浮液的管内层流强迫对流传热的修正努塞尔数是水的2．5—3．0倍，修正努塞尔数随着雷诺数及微胶囊体积分数的增加而增大。The research progress of microencapsulated phase change material suspensions is introduced. The experimental system of laminar heat transfer characteristics in microencapsulated phase change material suspensions is established. The laminar forced convection heat transfer of the suspensions in a circular tube under heating condition with constant heat flux density is tested and analyzed. The key factors affecting the heat transfer enhancement are Reynolds,number and volumetric fraction of micro-captransfer of the suspensions in a circular tube is higher than that for water by a factor of 2.5 to 3.0, and the correct Nusseh number increases with increasing Reynolds number and volumetric fraction of microcapsule.

关 键 词：相变 微胶囊相变悬浮液 传热强化 

分 类 号：TU995[建筑科学—供热、供燃气、通风及空调工程]