Investigation of the Influence of Formulation Method on Dispersion Stability and Thermal Properties of Al2O3-CC-DW Nanofluids

Noor Afifah Ahmad, Syahrullail Samion, Aminuddin Saat, Nor Azwadi Che Sidik

Keywords: Nanofluid; Al2O3 nanoparticles; Formulation strategy; Natural convection; Sedimentation

Issue I, Volume I, Pages 1-19

The present study investigated influence of formulation methods on the physical

properties and heat transfer behaviour of aluminium oxide-car coolant-distilled water nanofluids.

The nanofluid solutions were formulated via two methods, namely the conventional method (M1),

where nanoparticles were added into the CC-DW mixture and the proposed method (M2), where

distilled water was added into the Al2O3-CC mixture. From the measurement of physical

properties, it was observed that the proposed M2 method was more favourable compared to the

conventional method because it promoted reductions in density and viscosity values, and also

improvement in thermal conductivity. A similar trend was observed when examining nanofluids

in the natural convective experiment. The proposed formulation resulted in better dispersion

stability when subjected to heat. In addition, the M2 formulation gave higher Grashof (Gr),

Rayleigh (Ra) and Nusselt (Nu) numbers. This study demonstrated that dispersion stability,

physical properties and thermal performance of nanofluid were remarkably influenced by the

preparation process.

[1] R. Saidur, K. Y. Leong, H. A. Mohammad, A review on applications and challenges of

nanofluids, Renew. Sust. Energ. Rev. 15 (3) (2011) 1646-1668.

[2] N. A. C. Sidik, M. N. A. W. M. Yazid, R. Mamat, A review on the application of nanofluids

in vehicle engine cooling system, Int. J. Heat Mass Transf. 68 (2015) 85-90.

[3] M. Kole, T. K. Dey, Viscosity of alumina nanoparticles dispersed in car engine coolant, Exp.

Therm. Fluid Sci. 34 (2010) 677-683.

[4] W. Yu, H. Xie, L. Chen, Y. Li, Investigation of thermal conductivity and viscosity of

ethylene glycol based ZnO nanofluid, Thermochimic Acta 491 (2009) 92-96.

[5] M. Jarahnejad, E. B. Haghighi, M. Saleemi, N. Nikkam, R. Khodabandeh, B. Palm, M. S.

Toprak, M. Muhammed, Experimental investigation on viscosity of water-based Al2O3 and

TiO2 nanofluids, Rheol. Acta 54 (5) (2015) 411-422.

[6] S. V. Ravikumar, J. M. Jha, K. Haldar, S. K. Pal, S. Chakraborty, Surfactant-Based Cu–

Water Nanofluid Spray for Heat Transfer Enhancement of High Temperature Steel Surface,

J. Heat Transf. 137 (5) (2015) 051504.

[7] T. P. Teng, Y. B. Fang, Y. C. Hsu, L. Lin, Evaluating stability of aqueous multiwalled carbon

nanotube nanofluids by using different stabilizers, J. Nanomater. 2014 (2014) 203.

[8] K. S. Suganthi, K. S. Rajan, A formulation strategy for preparation of ZnO–propylene

glycol–water nanofluids with improved transport properties, Int. J. Heat Mass Transf. 71

(2014) 653-663.

[9] D. Wen, Y. Ding, Formulation of nanofluids for natural convective heat transfer applications,

Int. J. Heat Fluid Flow 26 (6) (2005) 855-864.

[10] D. Wen, Y. Ding, Natural convective heat transfer of suspensions of titanium dioxide

nanoparticles (nanofluids), IEEE Trans. Nanotechnol. 5 (3) (2006) 220-227.

[11] C. H. Li, G. P. Peterson, Experimental studies of natural convection heat transfer of

Al2O3/DI water nanoparticle suspensions (nanofluids), Adv. Mech. Eng. 2 (2010) 742739.

[12] R. Ni, S. Q. Zhou, K. Q. Xia, An experimental investigation of turbulent thermal convection

in water-based alumina nanofluid, Physics of Fluids, 23 (2) (2011) 022005.

[13] K. Kouloulias, A. Sergis, Y. Hardalupas, Sedimentation in nanofluids during a natural

convection experiment, Int. J. Heat Mass Transf. 101 (2016) 1193-1203.

[14] E. E. S. Michaelides, Nanofluidics: thermodynamic and transport properties, Springer, 2014.

[15] K. Khanafer, K. Vafai, M. Lightstone, Buoyancy-driven heat transfer enhancement in a twodimensional

enclosure utilizing nanofluids, Int. J. Heat Mass Transf. 46 (19) (2003) 3639-3653.

[16] C. J. Ho, W. K. Liu, Y. S. Chang, C. C. Lin, Natural convection heat transfer of aluminawater

nanofluid in vertical square enclosures: an experimental study, Int. J. Therm. Sci. 49

(8) (2010) 1345-1353.

[17] P. I. Frank, P. D. David, L. E. Theodore, S. L. Adrienne, Foundations of Heat Transfer, 6th

ed., Asia: John Wiley & Sons Inc, 2013.

[18] B. C. Pak, Y. I. Cho, Hydrodynamic and heat transfer study of dispersed fluids with

submicron metallic oxide particles, Exp. Heat Transf. 11 (2) (1998) 151-170.

[19] K. S. Suganthi, S. Manikandan, N. Anusha, K. S. Rajan, Cerium oxide–ethylene glycol

nanofluids with improved transport properties: preparation and elucidation of mechanism, J.

Taiwan Inst. Chem. Eng. 49 (2015) 183-191.

[20] G. Christensen, H. Younes, H. Hong, P. Smith, Effects of solvent hydrogen bonding,

viscosity, and polarity on the dispersion and alignment of nanofluids containing Fe2O3

nanoparticles, J. Appl. Phys. 118 (21) (2015) 214302.

[21] R. Sadeghi, S. G. Etemad, E. Keshavarzi, M. Haghshenasfard, Investigation of alumina

nanofluid stability by UV–vis spectrum, Microfluid. Nanofluidics 18 (5-6) (2015) 1023-1030.

[22] A. Amrollahi, A. A. Hamidi, A. M. Rashidi, The effects of temperature, volume fraction and

vibration time on the thermo-physical properties of a carbon nanotube suspension (carbon

nanofluid), Nanotechnology 19 (2008).

[23] D. Rouxel, R. Hadji, B. Vincent, Y. Fort, Effect of ultrasonication and dispersion stability

on the cluster size of alumina nanoscale particles in aqueous solutions, Ultrason. Sonochem.

18 (1) (2011) 382-388.

[24] Y. Y. Song, H. K. D. H. Bhadeshia, and D. W. Suh, Stability of stainless-steel nanoparticle

and water mixtures, Powder Technol. 272 (2015) 34-44.

[25] S. A. Adio, M. Sharifpur, J. P. Meyer, Influence of ultrasonication energy on the dispersion

consistency of Al2O3–glycerol nanofluid based on viscosity data, and model development

for the required ultrasonication energy density, J. Exp. Nanosci. 11 (8) (2016) 630-649.

[26] A. Ijam, R. Saidur, P. Ganesan, A. M. Golsheikh, Stability, thermo-physical properties, and

electrical conductivity of graphene oxide-deionized water/ethylene glycol based nanofluid,

Int. J. Heat Mass Transf. 87 (2015) 92-103.

[27] V. Kumaresan, R. Velraj, Experimental investigation of the thermo-physical properties of

water–ethylene glycol mixture-based CNT nanofluids, Thermochim. Acta 545 (2012) 180-186.

[28] X. F. Li, X. J. Wang, Z. Z. Li, Grashof number effects on nanofluids in natural convection

heat transfer, Appl. Mech. Mater. 468 (2014) 43-48.

[29] L. Snoussi, R. Chouikh, N. Ouerfelli, A. Guizani, Numerical simulation of heat transfer

enhancement for natural convection in a cubical enclosure filled with Al2O3/water and

Ag/water nanofluids, Phys. Chem. Liq. 4 (6) (2016) 703-716.

[30] M. S. Jaman, S. Islam, S. Saha, M. N. Hasan, M. Q. Islam, Effect of Reynolds and Grashof

numbers on mixed convection inside a lid-driven square cavity filled with water-Al 2 O 3

nanofluid, presented at AIP Conference Proceedings (vol. 1754, no. 1, p. 050050), July 12 (2016).

[31] R. Choudhary, D. Khurana, A. Kumar, S. Subudhi, Stability analysis of Al2O3/water

nanofluids, J. Exp. Nanosci. 12 (1) (2017) 140-151.