Thermophysical Properties of Al2O3-Water Nanofluids

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Aqueous nanofluids composed of alumina nanoparticles with different sizes at a concentration from 0.1vol% to 0.5vol% were prepared by a two-step method. The suspension and dispersion characteristics were experimentally examined by zeta potential, average size and absorption spectrum. The thermophysical properties such as the viscosity, surface tension, thermal conductivity, saturation vapor pressure and latent heat of vaporization were measured. The influences of the particle size, particle volume concentration and temperature on the thermophysical property were investigated. It was found that the viscosity and thermal conductivity increased with decreasing nanoparticle size. In contrast, the surface tension, saturation vapor pressure and latent heat of vaporization decrease with decreasing nanoparticle size. The viscosity, thermal conductivity and saturation vapor pressure have an increasing tendency with increasing volume concentration. However, surface tension and latent heat of vaporization showed a reverse tendency. Furthermore, the temperature also showed had obvious influence on the nanofluids viscosity, thermal conductivity and surface tension.

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Periodical:

Edited by:

Rongming Wang, Ying Wu and Xiaofeng Wu

Pages:

266-271

DOI:

10.4028/www.scientific.net/MSF.688.266

Citation:

B. J. Zhu et al., "Thermophysical Properties of Al2O3-Water Nanofluids", Materials Science Forum, Vol. 688, pp. 266-271, 2011

Online since:

June 2011

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$35.00

[1] Choi S U S. Enhancing thermal conductivity of fluids with nanoparticles. ASME Fluids Engineering Division, 1995, 231: 99-103.

[2] Eastman J A, Choi S U S, Li S, et a1. Anomalously increased efective thermal conductivity of ethylene glycol based nanofluids containing copper nanoparticles. Applied Physics Letters, 2001, 78(6): 718-720.

DOI: 10.1063/1.1341218

[3] H T Zhu, Y S Lin, Y S Yin. A novel one-step chemical method for preparation of copper nanofluids. Journal of Colloid and Interface Science, 2004, 277: 100-103.

DOI: 10.1016/j.jcis.2004.04.026

[4] M S Liu, C C Lin, Tsai C Y, et al. Enhancement of thermal conductivity with Cu for nanofluids using chemical reduction method. International Journal of Heat and Mass Transfer, 2006, 49: 3028-3033.

DOI: 10.1016/j.ijheatmasstransfer.2006.02.012

[5] C H Lo, Tsung T T, L C Chen, et al. Fabrication of copper oxide nanofluid using submerged are nanoparticale synthesis system (SANSS). Journal of Nanopartical Research, 2005, 7: 13-320.

[6] J K Li, Z M Liu, W L Zhao, et al. Dispersion behavior of CuO-H2O nanofluids. Journal of University of Jinan (Sci. & Tech. ), 2010, 24(1): 9-12.

[7] T Wang, Z Y Luo, S S Guo, et al. Preparation of controllable nanofluids and research on thermal conductivity. Journal of Zhejiang University (Engineering Science), 2007, 41(3): 514-518.

[8] L L Zhang, Y H Jiang, Y L Ding, et al. Investigation into the nanofluids. Journal of Nanoparticle Research, 2007, 9: 478-489.

[9] X F Li, D S Zhu, X J Wang. Evaluation on dispersion behavior of the aqueous cooper nanosuspensions. Journal of Colloid and Interface Science, 2007, 310(2): 456-463.

[10] K S Hong, T K Hong, H S Yang. Thermal conductivity of Fe nanofluids depending on the clustersize of nanoparticles. Applied Physics Letters, 2006, 88(3): 31901.

[11] Murshed S M S, Leong K C, C Yang. Enhanced thermal conductivity of TiO2-water based nanofluids. International Journal of Thermal Sciences, 2005, 44(4): 367-373.

DOI: 10.1016/j.ijthermalsci.2004.12.005

[12] D D Li, J K Li, W L Zhao. Stability and thermal conductivity of SiO2-water nanofluids. Journal of University of Jinan (Sci. & Tech. ), 2010, 24(2): 24-27.

[13] H Q Xie, J C Wang, T G Xi, et al. Thermal conductivity enhancement of suspension containing nanosized alumiua particles. Journal of Applied Physics, 2002, 91(7): 4568-4572.

[14] Choi S U S, Z G Zhang, W Yu, et al. Anomalous thermal conductivity enhancement in nanotube suspensions. Applied Physics Letters, 2001, 79: 2252-2254.

DOI: 10.1063/1.1408272

[15] M S Liu, M C Lin, T Huang, et al. Enhancement of thermal conductivity with carbon nanotube for nanofluids. International Communications in Heat and Mass Transfer, 2005, 32(9): 1202-1210.

DOI: 10.1016/j.icheatmasstransfer.2005.05.005

[16] Masuda H, Ebata A, Teramae K, et al. Alternation of thermal conductivity and viscosity of liquid dispersing ultrafine particles (dispersion of γ-A12O3, SiO2and TiO2 ultrafine particles). Bussei (Japan), 1993, 4(4): 227 -233.

DOI: 10.2963/jjtp.7.227

[17] Putra N, Roetzel W, Das S K. Natural convection of nanofluids. Heat Mass Transfer, 2003, 39: 775-78.

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