Ya-Qiao Wang
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (ATCMSI), Guangzhou 510275, P. R. China
Jia-Li Luo
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (ATCMSI), Guangzhou 510275, P. R. China.
Yi Heng
School of Computer Science and Engineering, Sun Yat-Sen University, Guangzhou, China; National Supercomputing Center in Guangzhou (NSCC-GZ), Guangzhou, China; Guangdong Province Key Laboratory of Computational Science, Guangzhou, China
Yuan-Xiang Fu
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (ATCMSI), Guangzhou 510275, P. R. China
Xi-Zhe Huang
Guangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (ATCMSI), Guangzhou 510275, P. R. China; Experimental Teaching Center, Sun Yat-sen University, Zhuhai, Guangdong, China
Dong-Chuan Mo
School of Materials, Sun Yat-sen University, Shenzhen 518107, China; Guangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (ATCMSI), Guangzhou 510275, China
Shu-Shen Lyu
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (ATCMSI), Guangzhou 510275, P. R. China.
Pool boiling heat transfer performance can be enhanced by two-layer composite structure (TLCS). Herein, we proposed the TLCS which combined the biomimetic copper forest and honeycomb-like porous structure. According to the pool boiling experiment with degassed DI water at atmosphere pressure, the TLCS has superior heat transfer performance than the plain copper surface, the biomimetic copper forest and the honeycomb-like porous structure. When the heat flux is 96 W·cm-2, the heat transfer coefficient of TLCS is 3.4 times, 1.5 times and 1.2 times over those of the plain copper surface, the biomimetic copper forest and the honeycomb-like porous structure, respectively. When the heat flux was 160 W·cm-2, the heat transfer coefficient of the TLCS reached 22.5 W·cm-2·K-1. The bubble dynamics images clearly show that, most bubbles on the TLCS have shorter periods which contributes to the better heat transfer performance. The TLCS combines the efficient nucleate sites from the honeycomb-like porous structure and the continuous liquid supply from the forest, which lead to the best heat transfer performance among these samples.