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Effect of nanoparticle deposition on capillary wicking that influences the critical heat flux in nanofluids

Title 
Effect of nanoparticle deposition on capillary wicking that influences the critical heat flux in nanofluids
Authors 
Kim, HD; Kim, MH; 김무환
Issue Date 
2007-07
Journal Title 
APPLIED PHYSICS LETTERS
Volume 
91
Issue 
1
Publisher 
AMER INST PHYSICS
Abstract 
When nanofluids are boiled, nanoparticles are deposited on the heater surface, causing a significant critical heat flux (CHF) enhancement. The authors examined the effect of the surface wettability and the capillarity of the nanoparticle deposition layer on CHF. It is well known that the deposition of nanoparticles changes the surface wettability, but it also causes capillary wicking on a porous surface, whereby the supplied liquid effectively delays the irreversible growth of a dry patch. This study demonstrates that the outstanding CHF enhancement in nanofluids is the consequence of both the improved surface wettability and the capillarity of the nanoparticle deposition layer. (C) 2007 American Institute of Physics.
Keywords 
NANO-FLUIDS, BOILING CRISIS, SURFACE, POOL, CONTACT-ANGLE
URI 
http://oasis.postech.ac.kr/handle/2014.oak/9589
DOI 
http://dx.doi.org/10.1063/1.2754644
ISSN 
0003-6951
Article Type 
ARTICLE
Appears in Collections
Mechanical Engineering (기계공학과) > 1. Journal Papers

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