| Title |
Heat Transfer Characteristics of Spray Cooling up to Critical Heat Flux on a Low-fin Enhanced Surface |
| Authors |
이요한(Yohan Lee) ; 강동규(Dong-Gyu Kang) ; 정동수(Dongsoo Jung) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2013.25.9.522 |
| Keywords |
분무 냉각 ; 열전달계수 ; low-fin 표면 ; 임계 열유속 ; 비등 열전달 Spray cooling ; Heat Transfer coefficient ; Low-fin 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) were measured on a smooth square flat copper heater of 9.53×9.53 mm at 36°C in a pool, with a smooth flat surface, and 26 fpi. Low-fin surfaces were used to see the change in HTCs and CHFs according to the surface characteristics, and FC-72 was used as the working fluid. FC-72 fluid had a significant influence on the heat transfer characteristics of the spray over the cooling surface. HTCs were taken from 10 kW/m2 to critical heat flux, for all surfaces. Test results with Low-fin showed that the CHFs of all the enhanced surface were greatly improved. It can be said that the surface form affects the heat transfer coefficient and critical heat flux. |