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Effect of surface charge state on the thermal conductivity of nanofluids

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Abstract

Thermal conductivity enhancement of nanofluids is very attractive to thermal and heat transfer engineering, however its mechanism is not clear yet. In this study, it is proposed that the surface charge state of nanoparticles is to explain the thermal conductivity enhancement of nanofluids. By comparing to the previous reported results, it is shown that the interparticle interaction due to the surface charge state is the most important factor to increase of thermal conductivity of nanofluids.

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Abbreviations

A:

Coulomb constant (9.0 × 109 N m2 C−2)

\( \hat{c}_{v} \) :

Specific heat (J K−1)

e:

Fundamental charge of an electron (1.6021765 × 10−19 C)

k:

Thermal conductivity (W/m−1 K−1)

k b :

Boltzmann constant (1.3807 × 10−23 J K−1)

l :

Mean free path of molecules or nanoparticles (m)

m :

Mass (kg)

n :

Particle concentration (m−3)

n i :

Concentration of the ionic species i

q :

Electric charge (C)

r :

Particle radius (m)

T :

Absolute temperature (K)

z i :

Valence of ion

ɛ 0 :

Permittivity of vacuum (8.8542 × 10−12 F m−1)

ɛ bf :

Dielectric constant of medium

ζ :

Zeta potential (mV)

κ :

Debye–Huckel parameter (m−1)

φ :

Volume fraction of nanoparticle

Br :

Brownian motion

EDL :

Electrical double layer

eff :

Effective

bf :

Base fluid

Mw :

Maxwell

np :

Nanoparticle

References

  1. Choi SUS (1995) Enhancing thermal conductivity of fluids with nanoparticles. ASME FED 231/MD 66:99–105

    Google Scholar 

  2. Maxwell JC (1873) A treatise on electricity and magnetism. Clarendon Press, Oxford

    Google Scholar 

  3. Kumar DH, Patel HE, Kumar VRR, Sundararajan T, Pradeep T, Das SK (2004) Model for heat conduction in nanofluids. Phys Rev Lett 93:144301

    Article  Google Scholar 

  4. Jang SP, Choi SUS (2004) Role of Brownian motion in the enhanced thermal conductivity of nanofluids. Appl Phys Lett 84:4316–4318

    Article  Google Scholar 

  5. Chon CH, Kihm KD, Lee SP, Choi SUS (2005) Empirical correlation finding the role of temperature and particle size for nanofluid (Al2O3) thermal conductivity enhancement. Appl Phys Lett 87:153107

    Article  Google Scholar 

  6. Lee D, Kim JW, Kim BG (2006) A new parameter to control heat transport in nanofluids: surface charge state of the particle in suspension. J Phys Chem B 110:4323–4328

    Article  Google Scholar 

  7. Lee D (2007) Thermophysical properties of interfacial layer in nanofluids. Langmuir 23:6011–6018

    Article  Google Scholar 

  8. Milanova D, Kumar R (2005) Role of ions in pool boiling heat transfer of pure and silica nanofluids. Appl Phys Lett 87:244107

    Article  Google Scholar 

  9. Jung JY, Yoo JY (2009) Thermal conductivity enhancement of nanofluids in conjunction with electrical double layer (EDL). Int J Heat Mass Transf 52:525–528

    Article  Google Scholar 

  10. Hunter RJ (1987) Foundations of colloid science, 1st edn. Clarendon Press, Oxford

    Google Scholar 

  11. Ohshima H, Furusawa K (1998) Electrical phenomena at interfaces; fundamentals, measurements, and applications, 2nd edn. Marcel Dekker Inc, New York

    Google Scholar 

  12. Chon CH, Kihm KD (2005) Thermal conductivity enhancement of nanofluids by Brownian motion. J Heat Transf 127:810

    Article  Google Scholar 

  13. Li D (2004) Electrokinetics in Microfluidics. Elsevier, London

    Google Scholar 

  14. Wen DS, Ding YL (2004) Experimental investigation into convective heat transfer of nanofluids at the entrance region under laminar flow conditions. Int J Heat Mass Transf 47:5181–5188

    Article  Google Scholar 

  15. Koo J, Kleinstreuer C (2004) A new thermal conductivity model for nanofluids. J Nanopart Res 6:577–588

    Article  Google Scholar 

  16. Prasher R, Bhattacharya P, Phelan PE (2005) Thermal conductivity of nanoscale colloidal solutions (nanofluids). Phys Rev Lett 94:025901

    Article  Google Scholar 

Download references

Acknowledgments

This work was supported by the grants from Korean Sciences and Engineering Foundation under Contract R01-2008-000-20458-0. Also this work was supported by a grant from Kyung Hee University in 2010 (KHU-20100186).

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Authors and Affiliations

  1. Marine Safety & Pollution Response Research Department, Maritime & Ocean Engineering Research Institute, KORDI, Daejeon, 305-343, Korea

    Jung-Yeul Jung

  2. Department of Mechanical Engineering, Kyung Hee University, Gyeonggi, 446-701, Korea

    Jung-Yeul Jung & Yong Tae Kang

Authors
  1. Jung-Yeul Jung
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  2. Yong Tae Kang
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Correspondence to Yong Tae Kang.

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Jung, JY., Kang, Y.T. Effect of surface charge state on the thermal conductivity of nanofluids. Heat Mass Transfer 48, 713–718 (2012). https://doi.org/10.1007/s00231-011-0921-6

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  • DOI: https://doi.org/10.1007/s00231-011-0921-6

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