A Comparative Analysis of Innovative Microchannel Heat Sinks for Electronic Cooling

Master of Science, Graduate Program in Mechanical Engineering
University of California, Riverside, June 2015
Dr. Kambiz Vafai, Chairperson

In this work, a comparative analysis of innovative microchannel heat sinks  such  as  two  layered  and  multilayered  microchannel  heat  sinks (MCHS),  or  thin  films  within  flexible  complex  seals  and  cooling augmentation using microchannels with rotatable separating plates, is presented.   A   compilation   of   the   numbers   of   layers,   main characteristics,   setups,   advantages   and   disadvantages,   thermal resistance,   pumping   power   in   double-layer   (DL-MCHS)   and multi-layer MCHS (ML-MCHS) is presented. In addition, the thermal resistance  is  analyzed  in  order  to  present  a  comparison  between  the single­layer  MCHS  (SL-MCHS)  and  multi­layer  microchannels.  The results  of  comparison  indicates  that  double-layer  and  multi-layer MCHS  have  lower  thermal  resistance  and  require  smaller  pumping power and they resolve the high streamwise temperature rise problem of SL-MCHS.