【摘要】 本文讨论了用焓模型及相似模型在相同参数下圆翅片管蓄热器在凝固过程中的放热特性,不同的Bi数及Ste数对上述两种数学模型计算结果所产生的影响及其原因。从而判定两模型的应用范围及前景,为设计潜热储能设备提供依据。文中列出了有关的放热特性曲线及实验所得的数据,示出了固液界面在凝固过程中的形状及其移动规律。更多还原

【Abstract】 This paper discusses the solidification process of Phase Change Material outside an annular fin-tube solved by applying both Enthalpy Model and Similarity Model under the same conditions, and also the performance of heat extraction, the position of solidliquid interface during solidification and the results of experiment showed for comparison and analysis. It also discusses the influences of the Biot number and the Stefan number on the results of calculations thus appraising the advantages and application prospects of the two models.更多还原