Boiling of FC-72 on Surfaces with Open Copper Microchannel

The paper presents the results of experimental research on pool boiling heat transfer dielectric liquid FC-72. Measurements were made at atmospheric pressure open surfaces with microchannels. Heat surfaces, in form parallel milled microchannels, copper. rectangular cross-sectional microchannels 0.2 to 0.5 mm deep and 0.4 wide. compared a smooth flat surface, provided five-fold increase coefficient two-fold critical flux. article analyses influence width height microchannel process. maximum flux was 271.7 kW/m2, highest obtained 25 kW/m2K. Furthermore, selected correlations for nucleate boiling.