【作者】 陈威； 叶勇；

【Author】 CHEN Wei;YE Yong;Shanghai Maritime University;

【机构】 上海海事大学商船学院；

【摘要】 汲液式多孔层置于建筑结构中,通过多孔材料的主动吸水、被动蒸发产生制冷效果,减少了外界的动力消耗。本文应用描述非饱和多孔介质热质迁移的数学模型,在不同环境参数下,分析了床层粒径对多孔床内部非饱和场量的影响;以含湿砂石多孔床层为对象,实验研究了不同粒径床层热湿迁移环境因子特性。数值分析与实验相符合,所获的结果可为含湿多孔填料床制冷性能的开发和利用提供一定的指导。更多还原

【Abstract】 In this paper, the porous layer with water soaking-up ability has been set for building. Due to the water soaking-up ability of porous layer and the evaporation, the cooling of the porous layer can be given continuously. The mathematical model on the heat and mass transfer in the unsaturated porous media is developed to analyze the effects of the ambient conditions on the unsaturated fields and cooling characteristics in porous layers of different particle sizes. The experiments have also been conducted to study the water soaking-up performance of the porous layer with different particle sizes. The simulations agree with the experimental data. All these results should be taken into account for the promotion and application of the evaporative cooling of wet porous media.更多还原