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Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids
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10.1063/1.2360892
/content/aip/journal/apl/89/15/10.1063/1.2360892
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2360892
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Figures

Image of FIG. 1.
FIG. 1.

Scanning electron microscope images of stainless steel surface boiled in (a) pure water, (b) nanofluid, (c) nanofluid, and (d) nanofluid.

Image of FIG. 2.
FIG. 2.

(Color online) Contact angles of sessile droplets on stainless steel surfaces, measured with a Krüss goniometer (uncertainty ) equipped with a camera monitor. (a) Pure water droplet on surface boiled in pure water, (b) nanofluid droplet on surface boiled in pure water, (c) pure water droplet on surface boiled in nanofluid, and (d) nanofluid droplet on surface boiled in nanofluid. Similar results were obtained with the and nanofluids.

Image of FIG. 3.
FIG. 3.

(Color online) Profilometer images of the stainless steel surface after boiling (a) pure water and (b) alumina nanofluid. The rms roughness values are and , respectively. Similar results were obtained with the other nanofluids.

Image of FIG. 4.
FIG. 4.

(Color online) Nucleate boiling of pure water (left) and alumina nanofluid (right) at the same heat flux on an electrically heated diameter stainless steel wire. Note the fewer bubble nucleation events (at ) and delayed CHF (at ) in the nanofluid.

Image of FIG. 5.
FIG. 5.

(Color online) CHF phenomena. (a) Liquid layer concept of Sadasivan et al. (Ref. 18). (b) Liquid layer thickness vs contact angle.

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/content/aip/journal/apl/89/15/10.1063/1.2360892
2006-10-10
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2360892
10.1063/1.2360892
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