多孔窗的传热传质分析与制冷性能研究

该文从连续介质力学的观点出发，提出了描述多孔介质非饱和热质传递的一般方程式，并针对二维多孔窗模型，采用ＳＩＭＰＬＥ方法进行了数值求解，得到了不同运行工况下的床内各量的场分布及其蒸发制冷量分布，同时对环境参数与多孔窗内部热质传递及其换热性能之间的内在联系进行了分析。

ANALYSIS OF HEAT AND MASS TRANSFER AND REFRIGERATING PERFORMANCE IN POROUS WINDOW

In this paper,from the macroscopic continuum approach,a set of generalequations are established to describe the heat and mass transfer throughunsaturated porous media.The SIMPLE method is adopted to solve the governingequations for the two-dimensional porous window model.The field distributionsof variables in the porous bed and the heat flux between the porous window andthe environment under different working conditions are obtained by numericalsimulation.The results show that the mathematical model and the numericalmethod are reasonable and feasible,and that the heat taken out of room by theporons window is capable of meeting some air-conditioning needs.The relationbetween the environment parameters and heat-mass transport in the porous bedand the heat exchange capability of the porous window are also analyzed.