Enhanced thermal properties of novel shape-stabilized PEG composite phase change materials with radial mesoporous silica sphere for thermal energy storage

Article English OPEN
Min, Xin ; Fang, Minghao ; Huang, Zhaohui ; Liu, Yan’gai ; Huang, Yaoting ; Wen, Ruilong ; Qian, Tingting ; Wu, Xiaowen (2015)
  • Publisher: Nature Publishing Group
  • Journal: Scientific Reports, volume 5 (issn: 2045-2322, eissn: 2045-2322)
  • Related identifiers: doi: 10.1038/srep12964, pmc: PMC4531330
  • Subject: Article

Radial mesoporous silica (RMS) sphere was tailor-made for further applications in producing shape-stabilized composite phase change materials (ss-CPCMs) through a facile self-assembly process using CTAB as the main template and TEOS as SiO2 precursor. Novel ss-CPCMs composed of polyethylene glycol (PEG) and RMS were prepared through vacuum impregnating method. Various techniques were employed to characterize the structural and thermal properties of the ss-CPCMs. The DSC results indicated that the PEG/RMS ss-CPCM was a promising candidate for building thermal energy storage applications due to its large latent heat, suitable phase change temperature, good thermal reliability, as well as the excellent chemical compatibility and thermal stability. Importantly, the possible formation mechanisms of both RMS sphere and PEG/RMS composite have also been proposed. The results also indicated that the properties of the PEG/RMS ss-CPCMs are influenced by the adsorption limitation of the PEG molecule from RMS sphere with mesoporous structure and the effect of RMS, as the impurities, on the perfect crystallization of PEG.
  • References (39)
    39 references, page 1 of 4

    Memon S. A.Phase change materials integrated in building walls: A state of the art review. Renew. Sustain. Energy Rev.31, 870–906 (2014).

    Pitie F. C., Zhao Y. & Caceres G. Thermo-mechanical analysis of ceramic encapsulated phase-change-material (PCM) particles. Energy Environ. Sci. 4, 2117–2124 (2011).

    Ji H. X.et al.Enhanced thermal conductivity of phase change materials with ultrathin-graphite foams for thermal energy storage. Energy Environ. Sci.3, 1185–1192 (2014).

    Huang M. J., Eames P. C. & Hewitt N. J. The application of a validated numerical model to predict the energy conservation potential of using phase change materials in the fabric of a building. Sol. Energy Mater. Sol. Cells 90, 1951–1960 (2006).

    Sharma A., Tyagi V. V., Chen C. R. & Buddhi D. Review on thermal energy storage with phase change materials and applications. Renew. Sustain. Energy Rev. 13, 318–345 (2009).

    Chen F. & Wolcott M. P. Miscibility studies of paraffin/polyethylene blends as form-stable phase change materials. Eur. Polym. J. 52, 44–52 (2014).

    Tang F., Cao L. & Fang G. Y. Preparation and thermal properties of stearic acid/titanium dioxide composites as shape-stabilized phase change materials for building thermal energy storage. Energy Build. 80, 352–357 (2014).

    Qi G. Q.et al.Polyethylene glycol based shape-stabilized phase change material for thermal energy storage with ultra-low content of graphene oxide. Sol. Energy Mater. Sol. Cells 123, 171–177 (2014).

  • Metrics
    No metrics available
Share - Bookmark