TY - JOUR
T1 - Kinetics of Evaporation of Pinned Nanofluid Volatile Droplets at Subatmospheric Pressures
AU - Orejon, Daniel
AU - Shanahan, Martin E.R.
AU - Takata, Yasuyuki
AU - Sefiane, Khellil
N1 - Funding Information:
The authors would like to thank Helen Breewood for her contributions to the experiments. D.O. and Y.T. express thanks for the support of the International Institute for Carbon Neutral Energy Research (WPI-I2CNER) and the World Premier Research Center Initiative (WPI), MEXT. DO would like to thank the support received by the Japanese Society for the Promotion of Science (JSPS) KAKENHI (Grant number UFG6K18029). K.S. and D.O. also acknowledge the support received by EPSRC.
Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/6/14
Y1 - 2016/6/14
N2 - We examine the effects of nanoparticle addition at low concentration on the evaporation kinetics of droplets in the constant radius mode. The evaporative behavior of deionized water and Al2O3 nanoparticle laden water on an aluminum substrate was observed at atmospheric and at different subatmospheric pressures. The two fluids exhibit the same evaporative behavior, independent of the droplet volume or the subatmospheric pressure. Moreover, the linear relationship between evaporation rate and droplet radius, initially proposed by Picknett and Bexon nearly four decades ago for droplets evaporating in the constant radius mode, is satisfied for both liquids. In addition, we have established a unified correlation solely function of fluid properties that extends this relationship to any subatmospheric pressure and fluid tested. We conclude that the addition of a small quantity of nanoparticles to the base fluid does not modify the kinetics of evaporation for pinned volatile droplets.
AB - We examine the effects of nanoparticle addition at low concentration on the evaporation kinetics of droplets in the constant radius mode. The evaporative behavior of deionized water and Al2O3 nanoparticle laden water on an aluminum substrate was observed at atmospheric and at different subatmospheric pressures. The two fluids exhibit the same evaporative behavior, independent of the droplet volume or the subatmospheric pressure. Moreover, the linear relationship between evaporation rate and droplet radius, initially proposed by Picknett and Bexon nearly four decades ago for droplets evaporating in the constant radius mode, is satisfied for both liquids. In addition, we have established a unified correlation solely function of fluid properties that extends this relationship to any subatmospheric pressure and fluid tested. We conclude that the addition of a small quantity of nanoparticles to the base fluid does not modify the kinetics of evaporation for pinned volatile droplets.
UR - http://www.scopus.com/inward/record.url?scp=84975060686&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84975060686&partnerID=8YFLogxK
U2 - 10.1021/acs.langmuir.6b00753
DO - 10.1021/acs.langmuir.6b00753
M3 - Article
AN - SCOPUS:84975060686
SN - 0743-7463
VL - 32
SP - 5812
EP - 5820
JO - Langmuir
JF - Langmuir
IS - 23
ER -