boiling enhancement
Recently Published Documents


TOTAL DOCUMENTS

125
(FIVE YEARS 36)

H-INDEX

24
(FIVE YEARS 5)

2021 ◽  
pp. 2108836
Author(s):  
Jiaqi Li ◽  
Yongyi Zhao ◽  
Jingcheng Ma ◽  
Wuchen Fu ◽  
Xiao Yan ◽  
...  
Keyword(s):  

Author(s):  
Robert Pastuszko ◽  
Robert Kaniowski ◽  
Norbert Dadas ◽  
Milena Bedla-Pawlusek

Author(s):  
Cheng-Hui Lin ◽  
Yoonjin Won

Abstract Boiling heat transfer has been a popular topic for decades because of its ability to remove a significant amount of thermal energy while maintaining a low wall superheat during the liquid phase change. Such boiling mechanisms can be tailored by engineering new boiling substrates through surface wettability modification and/or microscale feature installation. Here, we create new types of heterogeneous boiling surfaces that integrate vertical gradient micropores on macroscale fins by using a template-free electrodeposition method. The gradient morphology and corresponding gradient wettability simultaneously enable bubble nucleation on the top pores and capillary wicking through the bottom pores. With these unique wetting characteristics, we find that the gradient pores installed at the trench bottom demonstrate the most significant boiling enhancement in critical heat flux and heat transfer coefficients by 160% and 600%, respectively. This enhancement can be attributed to the microflow-enhanced nature of bubble departures around the fins while isolating bubble nucleation and liquid supply through gradient pores. These results provide fundamental insights into boiling mechanisms using porous media and the potential for future works that can optimize the design of multi-dimensional heterogeneous surfaces to engineer flow patterns and boiling mechanisms accordingly.


2021 ◽  
Vol 13 (40) ◽  
pp. 48189-48195
Author(s):  
Bo Yuan ◽  
Lei Liu ◽  
Chenyi Cui ◽  
Jiabin Fang ◽  
Yonghai Zhang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document