TY - JOUR
TI - Numerical simulation and experiment of laminar heat transfer characteristics in micro-channel collector
AU - Bai Ruichen
AU - Torii S
JN - Thermal Science
PY - 2024
VL - 28
IS - 2
SP - 1281
EP - 1286
PT - Article
AB - In response to the problems of high mass and high thermal resistance in  traditional cold plate collectors, the author proposes a shaped and  efficient micro-channel collector structure design for non-normal  temperature control scenarios such as high power, multiple heat sources, and  highly non-uniform power density. The author conducted numerical and  experimental studies on the laminar heat transfer in a highly efficient  micro-channel shaped collector for non-normal temperature control scenarios  such as high power, multiple heat sources, and highly non-uniform power  density, the results show that: The relative deviation between the simulated  and experimental values of the pressure drop of the micro-channel collector  using perfluorotriethylamine as the working fluid is within -20%, and the  relative deviation between the simulated and experimental values of the  surface temperature is within +3°C, the predicted trend of the pressure  drop and temperature field of the collector is in good agreement with the  experimental values, indicating the feasibility of using numerical  simulation methods for performance analysis and design optimization of 3-D  printed micro-channel collectors. As the flow rate increases, the pressure  drop of the collector increases approximately linearly, while the value  increase of the total heat transfer coefficient gradually decreases, and  increasing inlet temperature or heating power will reduce pressure drop of  collector and increase total heat transfer coefficient. The influence of  gravity on the pressure drop and total heat transfer coefficient of  micro-channel collectors is less than 1. The straight through micro-channel  collector has lower pressure drop and stronger heat transfer ability  compared to the folded type collector.