对几种非均匀孔隙的多孔介质换热元件进行了冷态实验 ,得到流动阻力与流速的经验关系式。基于冷态实验 ,建立多孔介质系统的能量平衡模型 ,通过数值模拟 ,得到系统内部压力曲线 ;将冷态实验的结果推广到了非等温系统 ,并讨论了流量、温度场、组成多孔介质物质的形状、流通长度等因素对阻力损失的影响 Several kinds of porous medium heat exchangers with non-uniform pores were tested in cold state, and the empirical relationship between flow resistance and flow rate was obtained. Based on the cold experiment, the energy balance model of the porous media system is established, and the pressure curve inside the system is obtained by numerical simulation. The results of the cold state experiment are generalized to the non-isothermal system. The flow, temperature field, , Circulation length and other factors on the resistance loss