含湿多孔蒸发制冷墙体能耗低，已得到广泛研究。根据含湿量不同，将多孔介质层划分为液饱和区、非饱和区和气饱和区三个区域，各区域中的传热与流动特性存在较大差异。目前，含湿多孔墙体内三个区域的界面迁移及其影响墙体蒸发制冷特性的机理尚不清楚。本项目研究，多孔介质自吸液式和有压头水源供液的含湿多孔墙体，存在液饱和区、非饱和区与气饱和区动态分层时，流体在各个区域的热质传递机理，以及对墙体制冷和吸液特性的影响，侧重分析含湿多孔墙体液饱和区与非饱和区或气饱和区的毛细弯液界面特性及界面迁移，以及非饱和区域范围变化的机理，建立含湿多孔蒸发制冷墙体分层传热及界面迁移数学模型，进行数值计算和试验研究。分析多孔介质孔隙大小、孔隙率和粒径等物性、含湿率、环境因素和水源压头等对含湿多孔墙体蒸发制冷和吸液特性影响。通过上述研究，探索出含湿多孔墙体蒸发相变分层传热及界面迁移特性，以及对其蒸发制冷和吸液特性影响的内在机理。

The wet porous evaporative cooled wall for building has been widely investigated due to the lower energy consumption. According to the wet content in the porous media, the porous layer can be divided as liquid saturated layer, unsaturated layer and gas saturated layer. There exists different characteristic of the flow and heat transfer in the different porous layer. The interface of the different moving layer in the wet porous wall and the evaporative cooling mechanism are unknown now. In this project, the effects of the heat and mass transfer in the porous layer on the cooling and the absorbing water of the wet porous wall are analyzed while there exists a liquid saturated layer,an unsaturated layer and a gas saturated layer in the porous layer. The characteristic and the moving of the meniscus evaporative interface between the liquid saturated layer and the unsaturated layer or the gas saturated layer, and the range change of the unsaturated layer in the porous layer are analyzed. The mathematics model on the heat transfer in the different porous layer and the interface moving in the wet porous evaporative cooled wall will be shown. The numerical analysis and the experiments will be conducted to verify the model and the numerical methods.. The influences of the pore size, porosity， particle size of the porous layer，the wet content in the porous media,the ambient conditions and the pressure of the supply water on the cooling and soaking-up water of the wet porous evaporative cooled wall will be analyzed. So, the heat transfer in the different porous layer and the interface moving in the porous media which influence the evaporative cooling and soaking-up water will be shown.