Thermal performance of single- and joint-extrusions with discrete heat sources

Abstract

A comparative investigation of single- and joint-extrusion approaches to the cooling of discrete heat sources is presented. An analytical approach based on iterations of a conjugate thermal network is presented to provide first-order approximations of the thermal design in quick solution times. Correlations are presented for fin-usage-partitioning due to differences in device location and power for the joint-extrusion approach. CFD results were found to be in good agreement with experimentally measured results. CFD solution is recommended for design refinement beyond the quick-solution first-order design of the analytical scheme.