| Title |
Heat Transfer Characteristics of Spray Cooling Up to Critical Heat Flux on Thermoexcel-E Enhanced Surface |
| Authors |
Yohan Lee ; Gwang-Wook Hong ; Jun-Soo Lee ; Dongsoo Jung |
| DOI |
http://dx.doi.org/10.6110/KJACR.2016.28.9.373 |
| Keywords |
분무 냉각 ; 열전달계수 ; Thermoexcel-E 표면 ; 임계 열유속 ; 비등 열전달 Spray cooling ; Heat Transfer coefficient ; Thermoexcel-E surface ; Critical heat flux ; Boiling heat transfer |
| Abstract |
Spray cooling is a technology of increasing interest for electronic cooling and other high heat flux applications. In this study, heat transfer coefficients (HTCs) and critical heat fluxes (CHFs) are measured on a smooth square flat copper heater of 9.53×9.53 mm at 36℃ in a pool, a smooth flat surface and Thermoexcel-E surfaces are used to see the change in HTCs and CHFs according to the surface characteristics and FC-72 is used as the working fluid. FC-72 fluid has a significant influence on heat transfer characteristics of the spray over the cooling surface. HTCs are taken from 10 kW/m2 to critical heat flux for all surfaces. Test results with Thermoexcel-E showed that CHFs of all enhanced surface is greatly improved. It can be said that surface form affects heat transfer coefficient and critical heat flux. |