Thermal Performance Experiment for Sintered Aluminum Fibrous Heat Sink

Abstract

This paper is concerned with the thermal performances and frictional characteristics for sintered aluminum fibrous heat sink. The results obtained experimentally include the effect of fiber diameter, porosity and air flow velocity on the thermal performance. The experimental results were compared with the previous studies such as results for an aluminum foam heat sink and results for a copper fibrous layer. The relations between Nusselt number (Nu_D) and pumping power characteristics (C_fp•Re_D³) were very sensitive to fiber diameter (d_w) and these are expressed in following equations, Nu_D=28.26(C_fp •ReD³ •10^-10)^0.188 in the case of d_w=0.14 mm,Nu_D=46.35(C_fp•Re_D3•10^-10)^0.139 in the case of d_w=0.54 mm, respectively.