Open AccessNano-inspired fluidic interactivity for boiling heat transfer: impact and criteria
Author(s) -
Beom-Seok Kim,
Geehong Choi,
Sangwoo Shin,
Thomas Gemming,
Hyung Hee Cho
Publication year - 2016
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep34348
Subject(s) - superheating , boiling , interface (matter) , heat transfer , materials science , interactivity , critical heat flux , nano , nucleate boiling , leidenfrost effect , nucleation , heat transfer coefficient , computer science , nanotechnology , mechanical engineering , mechanics , thermodynamics , composite material , physics , engineering , multimedia , capillary number , capillary action
The enhancement of boiling heat transfer, the most powerful energy-transferring technology, will lead to milestones in the development of high-efficiency, next-generation energy systems. Perceiving nano-inspired interface functionalities from their rough morphologies, we demonstrate interface-induced liquid refreshing is essential to improve heat transfer by intrinsically avoiding Leidenfrost phenomenon. High liquid accessibility of hemi-wicking and catalytic nucleation, triggered by the morphological and hydrodynamic peculiarities of nano-inspired interfaces, contribute to the critical heat flux (CHF) and the heat transfer coefficient (HTC). Our experiments show CHF is a function of universal hydrodynamic characteristics involving interfacial liquid accessibility and HTC is improved with a higher probability of smaller nuclei with less superheat. Considering the interface-induced and bulk liquid accessibility at boiling, we discuss functionalizing the interactivity between an interface and a counteracting fluid seeking to create a novel interface, a so-called smart interface, for a breakthrough in boiling and its pragmatic application in energy systems.