Optimization of Manifold Microchannel Heat Sink Based On Design of Experiment Method

Abstract

The manifold microchannel heat sink (MMC) shows high potential to cope with the rapidly increasing power density of the electronic devices. It is of significance to search for an optimization method to comprehensively consider multi-parameters effects on the performance of microchannel. Here, we have studied the temperature and flow characteristics of the manifold microchannel heat sink (MMC) via experimental method. Then, the effect of geometric parameters including microchannel aspect ratio (α), hydraulic diameter (Dh), and manifold block numbers (Nm) on the performance of a manifold microchannel heat sink (MMC) were studied by numerical method. Subsequently, the design of experiment (DOE) method was proposed to optimize the geometric parameters of the MMC. The relation of friction coefficient and heat transfer coefficient with respect to the three geometric parameters were gained by the mathematical regression model. The statistical optimized manifold microchannel achieve 10% reduced in temperature rise, 59.9% enhanced in the heat transfer coefficient, and the comprehensive quality factor of 1.6. Our work shows a novel method to consider the effect of structure parameters on the performance of the manifold microchannel and provides a novel optimization design method for the manifold microchannel.