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https://hdl.handle.net/2440/115812
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Type: | Journal article |
Title: | Experimental studies on the stability of CuO nanoparticles dispersed in different base fluids: influence of stirring, sonication and surface active agents |
Author: | Kamalgharibi, M. Hormozi, F. Zamzamian, S. Sarafraz, M. |
Citation: | Heat and Mass Transfer: Waerme- und Stoffuebertragung, 2016; 52(1):55-62 |
Publisher: | Springer |
Issue Date: | 2016 |
ISSN: | 0947-7411 1432-1181 |
Statement of Responsibility: | M. Kamalgharibi, F. Hormozi, Seyed Amir Hossein Zamzamian, M.M. Sarafraz |
Abstract: | The main aim of this work is to investigate the influence of different parameters on the stability of spherical CuO nanoparticles dispersed in water, ethylene glycol and 50:50 water/ethylene glycol binary mixture as different base fluids for heat transfer applications. Nano-fluids were prepared using two-step method at weight concentration of 0.1–0.4 %. Time-settlement experiments were established to examine the stability of nano-fluids. Quality tests were also performed to investigate the morphology, purity and size of nanoparticles. In order to stabilize the nano-fluids, stirring, pH control and sonication were utilized. The criteria for assessing the stability of nano-fluids were zeta potential and time-settlement experiments. Results demonstrated that the ethylene glycol can be the best medium for dispersing the CuO nanoparticle in comparison with water and water/EG binary mixture. The best condition for achieving the most stable nano-fluid was also introduced. Role of sonication time, stirring time and addition of surfactant on the stability of nano-fluids were investigated and briefly discussed. |
Rights: | © Springer-Verlag Berlin Heidelberg 2015 |
DOI: | 10.1007/s00231-015-1618-z |
Published version: | http://dx.doi.org/10.1007/s00231-015-1618-z |
Appears in Collections: | Aurora harvest 3 Mechanical Engineering publications |
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