【作者】 邱林； 刘星； 王偲；

【Author】 QIU Lin,LIU Xing (1.Beijing University of Civil Engineering and Architecture,Beijing 100044,China; 2.Central South University,Changsha 410083,China)

【机构】 北京建筑工程学院环能学院； 中南大学；

【摘要】 为了探讨相变蓄能材料在不同热作用条件下熔化过程的热性能变化,依据相变传热理论,采用现代CFD软件,对一种应用于建筑蓄能的水合盐相变材料TH29的相变过程进行数值研究。模拟了熔化比例、熔化时间随不同加热温度、加热边界条件的变化关系,得出决定相变界面位置和熔化速率的量化描述受诸因素的影响以及相变过程中各界面温度滞后现象的规律。更多还原

【Abstract】 To investigate the phase change heat storage material effect under different thermal properties of the melting process,based on phase change heat transfer theory,numerical study a phase transition process of the hydrated salt phase change materials(PCM) TH29 used in building storage by the modern CFD software.The proportion of melting,melting time,with different heating temperature,heating the variation of boundary conditions were simulated,study obtained the decision reached phase interface location and melting rate of the quantitative description of factors and the rules of phase transition temperature lag in the interface.更多还原