Currently, efficient heat transmission for compact electronic elements is an essential matter. It needs a sink with liquid cooling scheme that meets these demands as much feasible. The dimensions of 50.8 × 40.6 5.5 mm were adopted features transfer well 
 the fluid flow supercritical CO2 in this study. pressures, tem-peratures, and mass velocity ranges 7.5 to 12 MPa, 35 50oC, 100 500 Kg/m2...