纤维复合相变蓄热材料的固/液界面模拟及分析  

The Analog and Analysis on the Solid/Liquid Interface of Fiber-Phase Matrix Composites for Energy Storage

作　　者：汤勇[1] 张娟[1] 周德明[1] 王威[1] 王小五[2] 

机构地区：[1]华南理工大学机电工程系,广东广州510640 [2]华南理工大学应用物理系,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2001年第11期1-6,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 (2 9876 0 14)

摘　　要：按单元结构相似的理论设计了蓄热材料相变传热的物理模型 ,采用焓法理论和有限差分法建立了一种求解此物理模型传热特性的三维数学模型 .利用软件计算结果研究了纤维复合相变材料凝固过程中固 /液界面的移动规律及其放热特性 ,并用摄影法和测温法对纤维相变材料的凝固特性进行了实验论证 ,其结果与理论计算结果吻合 ,从而证明了本文所提出的数学模型的正确性 .A three_dimensional physical model and its mathematical solution for heat transfer analysis of thermal energy storage units are presented in this paper. This solution is based on enthalpy theory and finite difference. Then the heat transfer performance and solid_liquid interface motion pattern of fiber enhanced phase change material's solidification are predicted and analyzed by computer calculation. The influence of Bi to heat transfer performance is also studied for comparison. In addition, solidification character of fiber enhanced phase change material is testified by means of taking photographs and measuring thermometer. Result of computation goes well with experimental data, thus, the model brought forward in this paper is proved true. So it is obvious that this study will provide an instructive mathema_tical method of industry application.

关 键 词：纤维复合相变材料 传热模型 相变蓄热材料 固/液界面 传热特性 凝固特性 蓄热器 

分 类 号：TK513.5[动力工程及工程热物理—热能工程] TB34[一般工业技术—材料科学与工程]