Comparative Study of Rectangular and Trapezoidal Microchannels Using Water and Liquid Metal

摘要

With increasing demand for higher computational speed and emerging microsystems, efficient thermal management is need of the hour. Microchannels using liquid coolant are apt solution to this problem. Their efficiency depends greatly upon channel's cross-section and liquid media. In this study the performance of trapezoidal (with two configurations A and V-type) and rectangular microchannels are analyzed and compared for two different coolants, liquid gallium and water. Performance is compared on the basis of maximum temperature at heated surface. For water as coolant the performance of rectangular type is found to be superior in terms of both flow rate and pump power. For liquid gallium as a coolant, microchannels having A-type cross-section is found to be performing better followed by V-type then rectangular type at same flow rate. However on comparison on basis of pump power the rectangular type of geometry is found to be more suitable.