CHF enhancement of SiC nanofluid in pool boiling experiment

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SIC nanofluid was used for critical heat flux (CHF) enhancement in the case of water pool boiling. Many kinds of nanofluid have been highlighted as a simple way to gain high thermal performance of fluids, and SiC is received attention these days as a promising material because of its relatively high thermal properties. In this study, SiC nanofluid was investigated to measure its thermal performance in water pool boiling experiment especially for CHF. The volume concentration of SiC nanofluid were 0.0001%, 0.001%, 0.01%. Several characteristic of SiC nanofluid, such as zeta potential, and contact angle which could be affect on thermal performance of the fluids had been measured. The experiments were conducted under atmospheric pressure. Two kinds of test sections with different dimensions were used for verifying CHF enhancement trends for SiC nanofluid. The CHF has been enhanced up to 105% for volume concentration 0.01%. CHF enhancement ratios of SiC nanoparticle deposited surfaces were well corresponded with the results of SiC nanofluid. CHF enhancement trend was interesting because it did not linearly dependent on nanoparticle concentration. The wettability change of SIC nanoparticle deposited surface was discussed as main reason of CHF enhancement variation. (C) 2013 Elsevier Inc. All rights reserved.
Publisher
ELSEVIER SCIENCE INC
Issue Date
2014-01
Language
English
Article Type
Article
Keywords

CRITICAL HEAT-FLUX; NANO-FLUIDS; NANOPARTICLES; WATER; WETTABILITY; SURFACES; AL2O3

Citation

EXPERIMENTAL THERMAL AND FLUID SCIENCE, v.52, pp.12 - 18

ISSN
0894-1777
DOI
10.1016/j.expthermflusci.2013.08.008
URI
http://hdl.handle.net/10203/187099
Appears in Collection
NE-Journal Papers(저널논문)
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