EFEECTS OF BROWNIAN MOTION ON FREEZING OF PCM CONTAINING NANOPARTICLES

Abstract

Enhancement of thermal and heat transfer capabilities of phase change materials with addition of nanoparticles is reported. The mixed nanofluid of phase change material and nanoparticles presents a high thermal conductivity and low heat capacity and latent heat, in comparison with the base fluid. In order to present the thermophysical effects of nanoparticles, a solidification of nanofluid in a rectangular enclosure with natural convection induced by different wall temperatures is considered. The results show that the balance between the solidification acceleration by nanoparticles and slowing-down by phase change material gives rise to control the medium temperature. It indicates that this kind of mixture has great potential in various applications which requires temperature regulation. Also, the Brownian motion of nanoparticles enhances the convective heat transfer much more than the conductive transfer

Keywords

Dates

  • Submission Date2014-04-13
  • Revision Date2014-07-13
  • Acceptance Date2014-07-14
  • Online Date2014-08-03

DOI Reference

10.2298/TSCI140413094A

References

  1. Kenisarin, M., Mahkamov, K., Solar Energy Storage Using Phase Change Materials. Renewable and Sustainable Energy Reviews, 11 (2007) 9, pp. 1913-1965.
  2. Omer, A., Renewable Building Energy Systems and Passive Human Comfort Solutions. Renewable and Sustainable Energy Reviews, 12 (2008) 6, pp. 1562-1587.
  3. Mehling, H., Cabeza, L. F., Heat and Cold Storage with PCM, Springer-Verlag, Heidelberg, 2008.
  4. Das S. K. et al., Nanofluids: Science and Technology, John Wiley & Sons, New York, 2007
  5. Davis, S. H., Theory of Solidification, Cambridge University Press, Cambridge, 2001.
  6. Maxwell, J. C., A Treatise on Electricity and Magnetism, Vol. 3, Dover, New York, 1954.
  7. Masuda, H., et al., Alteration of Thermal Conductivity and Viscosity of Liquid by Dispersing Ultra-Fine Particles, Netsu Bussei, 7 (1993), 4, pp. 227-233.
  8. Choi, U. S., Enhancing Thermal Conductivity of Fluids with Nanoparticles, in: Developments and Application of Non-Newtonian Flow, ASME, FED-Vol. 231/MD-V 66 (1995) pp. 99-105.
  9. Ho C. J., et al., Thermophysical Properties of Nanoparticle-in-Paraffin Emulsion as Phase Change Material, International Communications in Heat and Mass Transfer, 36 (2009) pp. 467-470.
  10. Khodadadi, J. M., Hosseinizadeh, F., Nanoparticle-Enhanced Phase Change Materials (NEPCM) with Great Potential for Improved Thermal Energy Storage, International Communications in Heat and Mass Transfer, 34 (2007) pp. 534 - 543.
  11. Ranjbar, A. A., et al., Numerical Performance Study of Paraffin Wax Dispersed with Alumina in a Concentric Pipe Latent Heat Storage System. Thermal Science, 15 (2011), 1, pp. 169-181.
  12. Valan Arasu, A. et al., Numerical Heat Transfer Studies of a Latent Heat Storage System Containing Nano-Enhanced Phase Change Material. Thermal Science, 17 (2013), 2, pp. 419-430.
  13. Dutil, Y. et al., A Review on Phase-Change Materials: Mathematical Modeling and Simulations, Renewable and Sustainable Energy Reviews, 15 (2011) pp. 112-130
  14. Liu, S. et al., Mathematical Solutions and Numerical Models Employed for the Investigations of PCMs' Phase Transformations, Renewable and Sustainable Energy Reviews, 33 (2014) pp. 659-674
  15. Qiu, L., et al., Experimental Research of PCMs - TH29 Using on Building Energy Storage, Advanced Materials Research, 569 (2012), pp. 202-206.
  16. Evers, A. C., Development of a Quantitative Measure of the Functionality of Frame Walls Enhanced with Phase Change Materials Using a Dynamic Wall Simulator, M.S. thesis, University of Kansas, Lawrence, USA, 2008.
  17. Assis, E., et al., Numerical and Experimental Study of Solidification in a Spherical Shell. ASME Journal of Heat Transfer, 131 (2009), 024502.
  18. Belhamadia, Y., et al., An Enhanced Mathematical Model for Phase Change Model for Phase Change Problems with Natural Convection. International Journal of Numerical Analysis and Modeling, Series B, 3 (2012), 2, pp. 192-206.
  19. Buyruk, E., et al., Numerical Investigation for Solidification around Various Cylinder Geometries. Journal of Scientific & Industrial Research, 68 (2009), pp 122-129.
  20. Kashani, S., et al., Numerical Analysis of Melting of Nanoparticle Enhanced Phase Change Material in Latent Heat Thermal Energy Storage System. Thermal Science, 18 (2014), Suppl. 2, pp. S335-S345.
  21. Batchelor, G., The Effect of Brownian Motion on the Bulk Stress in a Suspension of Spherical Particles, Journal of Fluid Mechanics, 83 (1977) pp. 97-117.
  22. Hinch, J., A perspective of Batchelor's Research in Micro-Hydrodynamics. Journal of Fluid Mechanics, 63 (2010), pp. 8-17.
  23. Pan W., et al., Rheology, Microstructure and Migration in Brownian Colloidal Suspensions. Langmuir 26 (2010), 1, pp. 133-142.
  24. Einstein, A., Investigation on the Theory of the Brownian Movement, Dover, New York, 1956.
  25. Prasher, R., Thermal Conductivity of Nanoscale Colloidal Solutions (Nanofluids), Physical Review Letters, 94 (2005) 025901.
  26. Nan, C.-W.et al, A. C., Effective Thermal Conductivity of Particulate Composites with Interfacial Thermal Resistance. Journal of Applied Physics, 81 (1997) pp. 6692-6699.
  27. Lei, Q. M., Trupp, A. C., Experimental Study of Laminar Mixed Convection in the Entrance Region of a Horizontal Semicircular Duct, International Journal of Heat and Mass Transfer, 34 (1991) 9, pp. 2361-2372.
  28. Patankar, S. V., Numerical Heat Transfer and Fluid Flow, CRC Press, New York, 1980.
  29. Chen, Y., Flaconer, R. A., Advection-Diffusion Modeling Using the Modified QUICK Scheme, International Journal for Numerical Methods in Fluids, 115 (1992) pp. 1171-1191.
  30. Rhie, C. M., Chow, W. L., Numerical Study of Turbulent Flow Past an Airfoil with Trailing Edge Separation. AIAA Journal, 21 (1983) 11, pp. 1525-1532.
  31. FLUENT 6.1 Manual.
  32. Bejan, A., Entropy Generation Minimization, CRC Press, New York, 1996.