Experimental investigation on heat transfer enhancement in composite porous media

摘要

The method of composite porous media with mini-longitudinal channels at the surface and with beads pack- ing between plates was forward to improve the integrated performance of flow and heat transfer in porous media. The experimental results in the corresponding porous media were reported and analyzed. The experiments indicate that with proper matching of the particle diameter d_p, the mini-channel width w, the channel depth d and the distance between plates δ_r the heat transfer in the composite porois media is enhanced and flow resistence reduced compared with those of no mini- longitudinal channels at the surface. So this is an effective method to improve the integrated performance of flow and heat transfer in porous media.