THERMAL SCIENCE

International Scientific Journal

THE EFFECT OF SURFACTANT ON STABILITY AND THERMAL CONDUCTIVITY OF CARBON NANOTUBE BASED NANOFLUIDS

ABSTRACT
The addition of highly conductive substance such as carbon nanotubes into a traditional heat transfer fluid will enhance the fluids’ thermal conductivity. However, dispersion process of carbon nanotubes into base fluids is not an easy task due to hydrophobic characteristic of its surface. This study attempts to investigate the stability and thermal conductivity of carbon nanotube based ethylene glycol/water nanofluids with and without surfactants. Stability investigation was conducted through observation and zeta potential measurement methods. As for the thermal conductivity, the samples were measured based on transient line heat source. The results showed that 0.01 wt.% of carbon nanotube based nanofluid, containing 0.01wt.% hexadecyltrimethylammonium bromide possess highest zeta potential value compared to the other tested samples. 0.5 wt. % of carbon nanotube based nanofluids with gum arabic exhibit 25.7% thermal conductivity enhancement.
KEYWORDS
PAPER SUBMITTED: 2013-09-14
PAPER REVISED: 2014-05-13
PAPER ACCEPTED: 2014-05-27
PUBLISHED ONLINE: 2014-07-06
DOI REFERENCE: https://doi.org/10.2298/TSCI130914078L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE 2, PAGES [429 - 436]
REFERENCES
  1. Mahmoodi, M., Mixed Convection Inside Nanofluid Filled Rectangular Enclosures with Moving Bottom Wall, Thermal Science, 15 (2001), 3, pp. 889-903
  2. Yu,W., et al., Review and Assessment of Nanofluid Technology for Transportation and other Applications, No.ANL/ESD/07-9, Argonne: Energy System Division, Argonne National Laboratory, 2007
  3. Marquis, F.D.S., Chibante, L.P.F., Improving the Heat Transfer of Nanofluids and Nanolubricants with Carbon Nanotubes, JOM, 57 (2005), 12, pp. 32-43
  4. Ko, G.H., et al., An Experimental Study on the Pressure Drop of Nanofluids Containing Carbon Nanotubes in a Horizontal Tube, Int. J. Heat Mass Transf., 50 (2007), 23-24, pp. 4749-4753
  5. Chen, L., et al., Applications of Cationic Gemini Surfactant in Preparing Multi-Walled Carbon Nanotube Contained Nanofluids, Coll. Surf. A., 330 (2008), 2-3, pp.176-179
  6. Meibodi, M.E., et al., The Role of Different Parameters on the Stability and Thermal Conductivity of Carbon Nanotube/Water Nanofluids, Int. Commun. Heat Mass Transf., 37 (2010), 3, pp. 319-323
  7. Chen, L., Xie, H., Properties of Carbon Nanotube Nanofluids Stabilized by Cationic Gemini Surfactant, Thermochim Acta, 506 (2010), 1-2, pp.62-66
  8. Nasiri, A., et al., Effect of Dispersion Method on Thermal Conductivity and Stability of Nanofluid, Exp. Therm. Fluid Sci., 35 (2011), 4, pp.717-723
  9. Lamas, B., et al., Assessing Colloidal Stability of Long Term MWCNT based nanofluids, J. Colloid Interface Sci., 381 (2012), 1, pp. 17-23.
  10. Kumaresan, V., Velraj, R., Experimental Investigation of the Thermo-Physical Properties of Water-Ethylene Glycol Mixture Based CNT Nanofluids, Thermochim Acta, 545 (2012), pp. 180- 186
  11. Garg, P., et al., An Experimental Study on the Effect of Ultrasonication on Viscosity and Heat Transfer Performance of Multi-Wall Carbon Nanotube-Based Aqueous Nanofluids, Int. J. Heat Mass Transf., 52 (2009), 21- 22, pp.5090-5101
  12. Hwang, Y., et al., Production and Dispersion Stability of Nanoparticles in Nanofluids, Powder Technol., 186 (2008), 2, pp.145-153
  13. Murshed, S.M., et al., Characterization of Electrokinetic Properties of Nanofluids, J Nanosci Nanotechnol., 8 (2008), pp. 5966-5971
  14. Incropera, F.P., et al., Fundamentals of Heat and Mass transfer (6th ed.), John Wiley&Sons, New York, USA, 2007.

© 2020 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence