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Abstract
In this paper, a novel carbonate/MgO composite for high temperature thermal storage was prepared by doping nano-SiO2. Na2CO3-K2CO3 eutectic salt was used as the phase change material. The long-term stability of the samples was tested by holding at 750°C for a period of time. The differential thermal analysis calorimeter, X-ray diffractometer and scanning electron microscope were employed to detected the possible influences of constant high temperature on thermal properties. The results showed that the doped nano-SiO2 particles can restrain high temperature molten salt loss and improve the stability of the composite in both structure and thermal properties.
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Details
1 Departments of School of Energy, Power and Mechanical Engineering, University of North China Electric Power University, Beijing, 102206, China
2 State Key Lab of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute, Beijing, 102209, China