Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-03T02:36:36.119Z Has data issue: false hasContentIssue false
  • English
  • Français

The Effect of Nanoparticle Coating on the Thermal Conductivity of Nanofluids

Published online by Cambridge University Press:  31 January 2011

Michael John Fornasiero  and
Diana-Andra Borca-Tasciuc
Michael John Fornasiero
Affiliation:
[email protected], Rensselaer Polytechnic Institute, Mechanical, Aeronautical and Nuclear Engineering Department, Troy, New York, United States
Diana-Andra Borca-Tasciuc
Affiliation:
[email protected], Rensselaer Polytechnic Institute, Mechanical, Aeronautical and Nuclear Engineering Department, Troy, New York, United States
Get access

Abstract

Nanofluids are engineered colloidal suspensions of nanometer-sized particles in a carrier fluid and are receiving significant attention because of their potential applications in heat transfer area. Theoretical investigations have shown that the enhanced thermal conductivity observed in nanofluids is due to nanoparticle clustering and networking. This provides a low resistance path to the heat flowing through the fluid. However, the surface coating of the nanoparticles, which is often used to provide stable dispersion over the long term, may act as a thermal barrier, reducing the effective thermal conductivity of the nanofluid. Moreover, nanofluids with the same type of nanoparticles may exhibit different effective thermal conductivities, depending upon the thermal properties and thickness of the coating. In this context, thermal conductivity characterization of well dispersed iron oxide nanoparticles with two different surface coatings was carried out employing the transient hot wire technique. The diameter of the iron oxide core was 35 nm and the coatings used were aminosilane and carboxymethyl-dextran (CMX) of 7nm in thickness. Preliminary results suggest that effective thermal conductivity of CMX coated nanoparticle suspensions is slightly higher than that of aminosilane coated nanoparticles. In both cases, the effective thermal conductivity is higher than that predicted by the Maxwell model for composite media.

Keywords

nanoscalecolloidthermal conductivity
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1207: Symposium N – Colloidal Nanoparticles for Electronic Applications — Light Emission, Detection, Photovoltaics and Transport , 2009 , 1207-N07-05
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Choi, S.U.S. “Nanofluids: From vision to reality through research,” Journal of Heat Transfer, Vol. 131, p. 033106 (2009).Google Scholar
2 Özerinç, S., Kakaç, , and Yazιcιoğlu, A. G., “Enhanced thermal conductivity of nanofluids: a state of the art review,” Microfluidics and Nanofluidics, Published online: 4 November 2009 Google Scholar
3 Eastman, J.A., Phillpot, S.R., Choi, S.U.S. and Keblinski, P. “Thermal transport in nanofluids” Annual Review of Materials Research 34, 219–246 (2004).Google Scholar
4 Keblinski, P., Phillpot, S.R., Choi, S.U.S., Eastman, J.A., “Mechanisms of heat flow in suspensions of nano sized particles (nanofluids)” International Journal of Heat and Mass Transfer 45, 855–863 (2002).Google Scholar
5 Evans, W., Fish, J. and Keblinski, P. “Role of Brownian motion hydrodynamics on nanofluid thermal conductivity,” Applied Physics Letters 88, 093116 1-3 (2006).Google Scholar
6 Doroodchi, E., Evans, T. M., and Moghtaderi, B., “Comments on the effect of liquid layering on the thermal conductivity of nanofluids,” Journal of Nanoparticle Research 11, 1501–1507 (2009).Google Scholar
7 Denver, H., Gupta, A.; Joshi, A.; Kane, R.; Hella, M.; Borca Tasciuc, D. A. “Local temperature measurement in the vicinity of remotely heated gold nanoparticles,” Proceedings of the 2008, NSTI Nanotech, Nanotechnology 2008, Vol. 2, p 252–255.;Google Scholar
8 Nagasaka, Y., and Nagashima, A. “Absolute measurement of the thermal conductivity of electrically conducting liquids by the transient hot wire method” Journal of Physics E: Scientific Instruments Vol.14, p. 1435 (1981).Google Scholar
9 Hasselman, D.P.H. and Johnson, L.F. “Effective thermal conductivity of composites with interfacial thermal barrier resistance,” Journal of Composite Materials Vol. 21, p. 508 (1987).Google Scholar
10 Sun, T. and Teja, A.S. “Density, Viscosity, and Thermal Conductivity of Aqueous Benzoic Acid Mixtures between 375 K and 465 K” Journal of Chemical & Engineering Data Vol. 49, p. 1843 (2004).Google Scholar
11 Vargaftik, N.B., Filippov, L.P., Tarzimanov, A.A., Totskii, E.E., Handbook of Thermal Conductivity of Liquids and Gases, 1st ed. (CRC, 1993) p.135.Google Scholar
12 Mølgaard, J., and Smeltzer, W.W. “Thermal conductivity of magnetite and hematite,” Journal of Applied Physics 42, 3644–3647 (1971).Google Scholar
13 Evans, W., Prasher, R., Fish, J., Meakin, P., Phelan, P. and Keblinski, P. “Effect of aggregation and interfacial thermal resistance on thermal conductivity of nanocomposites and colloidal nanofluids” International Journal of Heat and Mass Transfer, Vol. 51, p. 1431 (2008).Google Scholar
14 Hong, K.S., Hong, T. K., and Yang, H. S. “Thermal conductivity of Fe nanofluids depending on the cluster size of nanoparticles,” Applied Physics Letters Vol. 88 p. 031901 (2006)Google Scholar
15 Philip, J., Shima, P.D., and Raj, B. “Evidence for enhanced thermal conduction through percolating structures in nanofluids,” Nanotechnology, Vol. 19, p. 305706 (2008).Google Scholar
16 Philip, J., Shima, P.D., and Raj, B. “Enhancement of thermal conductivity in magnetite based nanofluid due to chainlike structures” Applied Physics Letters, Vol. 91, p. 203108 (2007).Google Scholar
17 Philip, J., Shima, P.D., and Raj, B. “Nanofluid with tunable thermal properties,” Applied Physics Letters, Vol. 92, p. 043108 (2008)Google Scholar
18 Zhu, H., Zhang, C., Liu, S., Tang, Y., and Yin, Y., “Effects of nanoparticle clustering and alignment on thermal conductivities of Fe3O4 aqueous nanofluids” Applied Physics Letters, Vol. 89, p. 23123 (2006).Google Scholar
19 Chopkar, M., Das, P.K., and Manna, I. “Synthesis and characterization of nanofluid for advanced heat transfer applications,” Scripta Materialia Vol. 55 p.549 (2006).Google Scholar
20 Beck, M.P., Yuan, Y., Warrier, P., Teja, A.S. “The effect of particle size on the thermal conductivity of alumina nanofluids”, Journal of Nanoparticle Research Vol.11 p.1129 (2009)Google Scholar
21 Murshed, S.M.S., Leong, K.C., and Yang, C. “Investigations of thermal conductivity and viscosity of nanofluids: International Journal of Thermal Science, Vol. 47, p. 560 (2008) Das, S.K., Putra, N., Thiesen, P., and Roetzel, W. Temperature dependence of thermal conductivity enhancement for nanofluids. ASME Journal of Heat Transfer Vol. 125 p.567 (2003)Google Scholar
23 Chon, C.H., and Kihm, K.D. “Thermal conductivity enhancement of nanofluids by Brownian motion” ASME Journal of Heat Transfer Vol. 127 p. 810 (2005)Google Scholar
24 Buongiorno, J., et al. “A benchmark study on the thermal conductivity of nanofluids,” Journal of Applied Physics, Vol. 106, p. 094312 (2009)Google Scholar