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Author

Kang, Sarah M.
Climate Dynamics Lab
Research Interests
  • Climate change, ITCZ, Atmospheric general circulation, Polar amplification

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Effects of Al2O3/R-123 nanofluids containing C19H40 core-shell phase change materials on critical heat flux

Cited 3 times inthomson ciCited 3 times inthomson ci
Title
Effects of Al2O3/R-123 nanofluids containing C19H40 core-shell phase change materials on critical heat flux
Author
Park, Seong DaeLee, Seung WonKang, Sarah M.Kim, Seong ManSeo, HanBang, In Cheol
Keywords
Alumina nanofluid; Critical heat flux; MPCM; R-123; Taylor instability
Issue Date
201211
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.55, no.23-24, pp.7144 - 7150
Abstract
In this paper, the curiosity is coming from how to bring out the fluidic capability of nanofluids (fluid itself) for critical heat flux (CHF) enhancement away from surface deposition effects such as improved wettability. The pool boiling characteristics of dilute dispersions of alumina and the microencapsulated C19H40 phase change material (MPCM) in R-123 were studied. Whereas other nanofluid studies only reported that a significant enhancement of CHF was achieved by buildup of a porous layer of nanoparticles on the heater surface during nucleate boiling, it was found that the additional CHF enhancement of 24% occurred with the MPCM compared to alumina nanomaterials. With solid-liquid phase changes. PCMs in suspension delay the occurrence of CHF by absorbing heat around from the heater, nucleate bubbles and merged bubbles while PCM shells prevent leakage of molten cores and allows the return to solid with exchanges of heat at some distances. The present study found that PCMs could make fluidic effects of nanofluid not relying on the surface depositions.
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DOI
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.07.029
ISSN
0017-9310
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