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research-article

Phenomenon and Mechanism of Spray Cooling on Nanowire Arrayed and Hybrid Micro/Nano Structured Surfaces

[+] Author and Article Information
Jiannan Chen

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
chenjnkevin@126.com

Rui-Na Xu

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
ruinaxu@tsinghua.edu.cn

Zhen Zhang

Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China
zhangzhen13@tsinghua.edu.cn

Xue Chen

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
rnxchenxue@mail.tsinghua.edu.cn

Xiaolong Ouyang

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
ouyangxl@mail.tsinghua.edu.cn

Gaoyuan Wang

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
wanggaoyuan94@gmail.com

Peixue Jiang

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
jiangpx@tsinghua.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4039903 History: Received June 10, 2017; Revised March 28, 2018

Abstract

Enhancing spray cooling with surface structures is a common, effective approach for high heat flux thermal management to guarantee the reliability of the many high power, high speed electronics and to improve the efficiency of new energy systems. However, the fundamental heat transfer enhancement mechanisms are not well understood especially for nanostructures. Here, we fabricated six groups of nanowire arrayed surfaces with various structures and sizes that show for the first time how these nanostructures enhance the spray cooling by improving the surface wettability and the liquid transport to quickly rewet the surface and avoid dry out. These insights into the nanostructure spray cooling heat transfer enhancement mechanisms are combined with microstructure heat transfer mechanism in integrated microstructure and nanostructure hybrid surface that further enhances the spray cooling heat transfer.

Copyright (c) 2018 by ASME
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