Heat Transfer Network and Correlation for A Double-Layered Microchannel Heat Sink
Keywords:double layer, microchannel heat sink, thermal resistance network
This paper discusses the methods to obtain a correlation of local thermal resistance for heat transfer of a double-layered microchannel heat sink (DL-MCHS) with parallel flow configuration. Based on the energy balance in a thermal resistance network constructed for the DL-MCHS, the local thermal resistance which consists of conductive, convective and capacitive thermal resistance has been obtained as a function of governing parameters including the channel geometrical parameters. The results predicted for different channel width with the correlation are compared with the results obtained through numerical. Good agreement was found between simulation and correlation results, which indicates that this correlation could be used to predict the local temperature along the flow direction for DL-MCHS with different channel width.