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http://dx.doi.org/10.15435/JILASSKR.2015.20.4.236

Characteristics for Nanofluid Droplet Evaporation on Heated Surface at Boiling Temperature of Base Liquid  

Kim, Dae Yun (중앙대학교 기계공학부)
Jung, Jung-Yeul (선박해양연구소 해양플랜트산업기술센터)
Lee, Seong Hyuk (중앙대학교 기계공학부)
Publication Information
Journal of ILASS-Korea / v.20, no.4, 2015 , pp. 236-240 More about this Journal
Abstract
This study aims to experimentally investigate the evaporation characteristics of nanofluid droplet on heated surface at boiling temperature of DI-water. In particular, textured surface was used to examine the effect of wettability on evaporation. At the initial stage of evaporation process, dynamic contact angle (DCA) of nanofluid droplet with 0.01 vol.% concentration on textured surface rapidly increased over its equilibrium contact angle by generated large bubble inside the droplet due to lower wettability. However, contact angle of nanofluid droplet with higher concentration on textured surface decreased with surface tension. In addition, total evaporation time of droplet on textured surface was considerably delayed due to reduction of contact area between droplet and solid surface. Thus, evaporation characteristics were highly affected by the nanofluid concentration and surface wettability.
Keywords
Nanofluid; Droplet; Evaporation; Heated surface; Boiling temperature;
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