Thermal Energy Storage System of Sulfate / Fiber Matrix Composite
The K2SO4-Na2SO4 system was studied by differential scanning calorimetry (DSC) with the aim of developing a new phase-change thermal energy storage material. The temperature range of phase change is from 800°C to 1069°C according to the phase diagram. A new shape-stabilized phase-change material made of molten salts impregnated by capillary forces in a porous-fiber matrix was presented. These materials were characterized by X-ray diffraction analysis and differential scanning calorimetry analysis. The results indicated that the compound included 70~80% of molten salts, meanwhile the heat storage material could keep its shape without any leakage during the heating process.
Wei Pan and Jianghong Gong
X. T. Ren et al., "Thermal Energy Storage System of Sulfate / Fiber Matrix Composite", Key Engineering Materials, Vols. 368-372, pp. 1077-1079, 2008