Materials and Structures

, Volume 47, Issue 3, pp 533–539 | Cite as

Preparation and heat storage/release behavior of latent heat storage gypsum-based building materials

Original Article

Abstract

A new method to manufacture gypsum-based building materials with high latent heat storage capability is described. When expanded graphite is used as the adsorption medium for butyl stearate, an organic/inorganic phase-change composite is formed. This composite can be mixed with gypsum to manufacture a latent heat storage gypsum-based building material. Differential scanning calorimetry (DSC) test results indicate that the phase-change enthalpy value of this composite is similar to that of pure butyl stearate and that it therefore displays good thermophysical properties. We found that a mixture of gypsum with this composite should contain no more than 5 % of the latter to maintain the workability of the paste. The hardened gypsum–composite material exhibits some defects in the interface between the phase-change composite and the gypsum, but these do not seriously affect the strength of the gypsum product. The results of a temperature cycle test illustrate that gypsum containing 5 % phase-change composite can deliver high-performance heat storage/release. This characteristic of the composite will improve the inertia of ambient temperature fluctuations, making it applicable as a new building product that will conserve energy.

Keywords

Phase-change materials Latent heat storage Expanded graphite Butyl stearate Gypsum Building energy conservation 

Notes

Acknowledgments

This work was sponsored by the Zhejiang Provincial Natural Science Foundation (LY12E08019), the National Basic Research Program of China (2009CB623203), and the Key Science and Technology Innovation Team of Zhejiang Province (2010R50034).

References

  1. 1.
    Royon L, Guiffant G, Flaud P (1997) Investigation of heat transfer in a polymeric phase change material for low level heat storage. Energy Convers Manag 38(6):517–524CrossRefGoogle Scholar
  2. 2.
    Pasupathy A, Velraj R, Seeniraj RV (2008) Phase change material-based building architecture for thermal management in residential and commercial establishments. Renew Sustain Energy Rev 12(1):39–64CrossRefGoogle Scholar
  3. 3.
    Shi T, Sun W (2008) Review on application technology progress of phase change building materials. J Chin Ceram Soc 36(7):1031–1036Google Scholar
  4. 4.
    Shen Z-m (2003) New carbon materials. Chemical Industry Press, Beijing, pp 40–42Google Scholar
  5. 5.
    Manning TJ, Mitchell M, Stach J et al (1999) Synthesis of exfoliated graphite from fluorinated graphite using an atmospheric-pressure argon plasma. Carbon 37(7):1159–1164CrossRefGoogle Scholar
  6. 6.
    Cao N-z, Shen W-c, Wen S-z (1996) The characterization of the porous structure of expanded graphite. Acta Phys Chim Sin 12(8):766–768Google Scholar
  7. 7.
    Tryba B, Morawski AW, Inagaki M (2005) Preparation of exfoliated graphite by microwave irradiation. Carbon 43(11):2417–2419CrossRefGoogle Scholar

Copyright information

© RILEM 2013

Authors and Affiliations

  1. 1.College of Civil Engineering and ArchitectureZhejiang University of TechnologyHangzhouPeople’s Republic of China
  2. 2.Jiangsu Key Laboratory of Construction Materials, School of Material Science and EngineeringSoutheast UniversityNanjingPeople’s Republic of China

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