Thermal Conductivity Enhancement of Myristic Acid Using Exfoliated Graphite for Thermal Energy Storage Applications

Conference paper
Part of the Springer Proceedings in Energy book series (SPE)

Abstract

The effect of exfoliated graphite (ExG) with myristic acid phase change material has been investigated to understand the enhancement of thermal conductivity and shape stabilization for the ExG—myristic acid composite system. The thermochemically synthesized ExG is added to myristic acid in 5, 10, and 15 wt% and the shape stabilized ExG-myristic acid composite samples are prepared. The heat release, solidification time and latent heat of myristic acid and ExG-myristic acid composites are measured using temperature history (T-history) and Differential Scanning Calorimetric (DSC) measurements, respectively. The measured melting temperature and latent heat of fusion of myristic acid are ~55 °C and ~185 kJ/kg, respectively. Latent heat of ExG-myristic acid composite samples has decreased linearly with increasing ExG weight fraction. T-history measurements suggest the reduction in solidification time for ExG-myristic acid composite samples and ~55% reduction in heat release time is observed for 15% ExG-myristic acid composite sample with respect to pristine myristic acid. The observed reduction in heat release time subtantiates the effective enhancement of thermal conductivity for ExG—myristic acid composite samples.

Keywords

Phase change materials Latent heat Thermal energy storage Exfoliated graphite 

Notes

Acknowledgements

Authors acknowledge Defence Research and Development Organization (DRDO) through project #CHESS/CARS/ST/004 and Ministry of New and Renewable Energy (MNRE) support through project #15/40/2010-11/ST for financial assistance to carry out the experimental work.

References

  1. 1.
    A. Abhat, Low temperature latent thermal energy storage system: heat storage materials. Sol. Energy 30, 313–332 (1983)CrossRefGoogle Scholar
  2. 2.
    I. Dincer, M.A. Rosen, Thermal Energy Storage Systems and Applications (Wiley, Chichester, 2002)Google Scholar
  3. 3.
    B. Zalba et al., Review on thermal energy storage with phase change: materials, heat transfer analysis and applications. Appl. Therm. Eng. 23, 251–283 (2003)CrossRefGoogle Scholar
  4. 4.
    S. Himran et al., Characterization of alkanes and paraffin waxes for application as phase change energy storage medium. Energy Sources 16, 117–128 (1994)CrossRefGoogle Scholar
  5. 5.
    D. Rozanna et al., Fatty acids as phase change materials (PCMs) for thermal energy storage: a review. Int. J. Green Energy 1, 495–513 (2004)CrossRefGoogle Scholar
  6. 6.
    D. Feldman et al., Fatty acids and their mixtures as phase change materials for thermal energy storage. Solar Energy Mater. 18, 201–216 (1989)CrossRefGoogle Scholar
  7. 7.
    A. Hasan, A.M. Sayigh, Some fatty acids as phase change thermal energy storage materials. Renew. Energy 4, 69–76 (1994)CrossRefGoogle Scholar
  8. 8.
    A. Sari, K. Kaygusuz, Some fatty acids used for latent heat storage: thermal stability and corrosion of metals with respect to thermal cycling. Renew. Energy 28, 939–948 (2003)CrossRefGoogle Scholar
  9. 9.
    F. Cedeno, Measurements of temperature and melting heat of some pure fatty acids and their binary and ternary mixtures by differential scanning calorimetry. Thermochim. Acta 369, 39–50 (2001)CrossRefGoogle Scholar
  10. 10.
    B. Zalba et al., Review on thermal energy storage with phase change: materials, heat transfer analysis and applications. Appl. Therm. Eng. 23(3), 251–283 (2003)CrossRefGoogle Scholar
  11. 11.
    S.A. Khateeb, M.M. Farid, J.R. Selman, S. Al-Hallaj, Design and simulation of a lithium-ion battery with a phase change material thermal management system for an electric scooter. J. Power Sources. 128, 292–307 (2004)CrossRefGoogle Scholar
  12. 12.
    L.F. Cabeza et al., Heat transfer enhancement in water when used as PCM in thermal energy storage. Appl. Therm. Eng. 22, 1141–1151 (2002)CrossRefGoogle Scholar
  13. 13.
    J. Fukai et al., Thermal conductivity enhancement of energy storage media using carbon fibers. Energy Convers. Manag. 41, 1543–1556 (2000)CrossRefGoogle Scholar
  14. 14.
    J. Fukai et al., Effect of carbon fiber brushes on conductive heat transfer in phase change materials. Int. J. Heat Mass Transf. 45, 4781–4792 (2002)CrossRefGoogle Scholar
  15. 15.
    H. Mehling et al., Latent heat storage using a PCM–graphite composite material, in Proceedings of TERRASTOCK 2000, Stuttgart, Germany (2000)Google Scholar
  16. 16.
    X. Py et al., Paraffin/porous-graphite-matrix composite as a high and constant power thermal storage material. Int. J. Heat Mass Transf. 44, 2727–2737 (2001)CrossRefGoogle Scholar
  17. 17.
    L. Cabeza et al., PCM–graphite matrix in flat plate encapsulates for low temperature applications, in Proceedings of Future stock 2003, 9th International Conference on Thermal Energy Storage, Warsaw, Poland (2003)Google Scholar
  18. 18.
    A. Mills et al., Thermal conductivity enhancement of phase change materials using a graphite matrix. Appl. Therm. Eng. 26, 1652–1661 (2006)CrossRefGoogle Scholar
  19. 19.
    Zhang Shengtao et al., Characterization of exfoliated graphite prepared with the method of secondary intervening. Int. J. Ind. Chem. 2(2), 123–130 (2011)Google Scholar
  20. 20.
    J. Huang et al., Form-stable phase change materials based on eutectic mixture of tetradecanol and fatty acids for building energy storage: preparation and performance analysis. Materials 6, 4758–4775 (2013)CrossRefGoogle Scholar
  21. 21.
    Ahmet Sari, Eutectic mixtures of some fatty acids for low temperature solar heating applications: thermal properties and thermal reliability. Appl. Therm. Eng. 25, 2100–2107 (2005)CrossRefGoogle Scholar
  22. 22.
    R. Kumar et al., An experimental set-up for measuring thermodynamic response of low temperature phase change materials, in 2016 IEEE First International Conference on Control, Measurement and Instrumentation (CMI), pp. 107–109 (2016). https://dx.doi.org/10.1109/CMI.2016.7413720

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Rohitash Kumar
    • 1
    • 2
  • Rakshanda Jakhoria
    • 1
  • Ambesh Dixit
    • 1
  1. 1.Department of Physics and Centre for Solar EnergyIndian Institute of Technology JodhpurJodhpurIndia
  2. 2.Defence Laboratory JodhpurJodhpurIndia

Personalised recommendations