Advances in New and Renewable Energy >
Preparation of Graphite Foam/Eutectic Salt Composite Phase Change Materials
Received date: 2015-05-20
Revised date: 2015-06-24
Online published: 2015-08-30
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.
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
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