Heat transfer enhancement of ammonia spray cooling by surface modification

2016 ◽  
Vol 101 ◽  
pp. 60-68 ◽  
Author(s):  
H. Wang ◽  
J.J. Wu ◽  
Qiang Yang ◽  
X. Zhu ◽  
Q. Liao
Keyword(s):  
Heat Transfer ◽  
Surface Modification ◽  
Heat Transfer Enhancement ◽  
Spray Cooling ◽  
Transfer Enhancement

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

2018 ◽  
Vol 140 (11) ◽  
Author(s):  
Jian-nan Chen ◽  
Rui-na Xu ◽  
Zhen Zhang ◽  
Xue Chen ◽  
Xiao-long Ouyang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Enhancement ◽  
High Speed ◽  
Spray Cooling ◽  
High Heat ◽  
High Heat Flux ◽  
Transfer Enhancement ◽  
Nanostructured Surfaces ◽  
New Energy ◽  
Dry Out

Enhancing spray cooling with surface structures is a common, effective approach for high heat flux thermal management to guarantee the reliability of 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.

Validity of performance factors used in recent studies on heat transfer enhancement by surface modification or insert devices

2022 ◽  
Vol 186 ◽  
pp. 122431
Author(s):  
Siti Nurul Akmal Yusof ◽  
Nura Mu'az Muhammad ◽  
Wan Mohd Arif Aziz Japar ◽  
Yutaka Asako ◽  
Chungpyo Hong ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Surface Modification ◽  
Heat Transfer Enhancement ◽  
Transfer Enhancement ◽  
Performance Factors
Sign in / Sign up

Export Citation Format

Share Document