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Preparation of Graphite Foam/Eutectic Salt Composite Phase Change Materials

  • LUO Zhi-jun ,
  • GUO Cha-xiu
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  • 1. Zhengzhou Design and Research Institute of Coal Industry Co., Ltd, Zhengzhou 450000, China;
    2. School of Chemical and Energy Engineering, Zhengzhou University, Zhengzhou 450001, China

Received date: 2015-05-20

  Revised date: 2015-06-24

  Online published: 2015-08-30

Abstract

Eutectic salt (KNO3/NaNO3) with the mass ratio of 4:6 was firstly prepared then the melting point and latent heat of eutectic salt were obtained by experiments. Next, graphite foam/eutectic salt composite PCM was fabricated successfully by melting impregnation method. In this material, graphite foam and eutectic salt were treated as strengthening matrix and PCM respectively. This kind of composite PCM was suitable for energy storage device in solar thermal power generation system. The microstructure of the composite phase change material was characterized with scanning electron microscopy. The thermo-physical properties of composite PCM including melting point, latent heat and effective thermal conductivity were acquired by DSC test and laser flash technique. The results showed that: the composite effect of eutectic salt and graphite foam was ideal. The melting point of the eutectic salt and latent heat did not change after the impregnation. Composite PCM with high effective thermal conductivity, completely meet the requirements of high temperature heat storage.

Cite this article

LUO Zhi-jun , GUO Cha-xiu . Preparation of Graphite Foam/Eutectic Salt Composite Phase Change Materials[J]. Advances in New and Renewable Energy, 2015 , 3(4) : 305 -308 . DOI: 10.3969/j.issn.2095-560X.2015.04.010

References

[1] Farid M M, Khudhair A M, Razack S A K, Al-Hallaj S. A review on phase change energy storage: materials and applications[J]. Energy Convers Manage, 2004, 45: 1597-1615.

[2] Jegadheeswaran S, Pohekar S D. Performance enhancement in latent heat thermal storage system: a review[J]. Renew Sustainable Energy Rev, 2009, 3: 2225-2244.

[3] Xiao X, Zhang P, Li M. Preparation and thermal characterization of paraffin/metal foam composite phase change material[J]. Applied Energy, 2013, 112: 1357-1366.

[4] 张涛, 余建祖. 泡沫铜作为填充材料的相变储热实验[J]. 北京航空航天大学学报, 2007, 33(9): 1021-1024.

[5] Jiang J H, Zhu Y Y, Ma A B, et al. Preparation and performances of bulk porous Al foams impregnated with phase-change-materials for thermal storage[J]. Progress in nature science: materials international, 2012, 22(5): 440-444.

[6] 张新铭. 石墨泡沫制备及导热性能研究[D]. 重庆: 重庆大学, 2010.

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