Effective thermal conductivity of porous media was investigated by experimental and numerical approaches. Fractal pore network model, which was the combination of fractal theory and pore network model, was used to research the effective thermal conductivity of porous media. The numerical results agreed well with experimental ones, which indicated that the fractal pore network model is suitable for researching effective thermal conductivity of porous media. The effects of pore-throat ratio, coordination number, vertical throat proportion, throat length, porosity, thermal conductivity of matrix and fluid on the effective thermal conductivity of porous media were studied. It was revealed that vertical throat proportion can enlarge the thermo-resistance of porous media and decrease its effective thermal conductivity. If thermal conductivity of matrix is larger than that of fluid, the effective thermal conductivity of porous media increases with the increase of pore-throat ratio and decrease of throat length. When the number of parallel throat is fixed, the effective thermal conductivity of porous media increases with the decrease of coordination number. On the contrary, when the number of vertical throat is fixed, the effective thermal conductivity of porous media increases with the increase of coordination number.
