期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 53, 期 21-22, 页码 4607-4618出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2010.06.032
关键词
Nanofluids; Particle concentration; Turbulent flow; Convection correlation; Pressure loss; Friction factor
资金
- Graduate School at the University of Alaska Fairbanks
This paper presents new correlations for the convective heat transfer and the friction factor developed from the experiments of nanoparticles comprised of aluminum oxide, copper oxide and silicon dioxide dispersed in 60% ethylene glycol and 40% water by mass. The experimental measurements were carried out in the fully developed turbulent regime for the aforementioned three different nanofluids at various particle volumetric concentrations. First, the rheological and the thermophysical properties such as viscosity, density, specific heat and thermal conductivity were measured at different temperatures for varying particle volume concentrations. Next, these properties were used to develop the heat transfer coefficient correlation from experiments, as a function of these properties and the particle volumetric concentration. The pressure loss was also measured and a new correlation was developed to represent the friction factor for nanofluids. (C) 2010 Elsevier Ltd. All rights reserved.
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