【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 .为实用的纤维复合相变材料蓄热器的设计提供了指导性的数学工具更多还原

【Abstract】 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.更多还原