Category: Transient Plane Source
Author(s): Daili Feng, Ge Wang, Limin Zhong, Xiaowei Zhang, Yanhui Feng, Yi Luan
Keywords: composites, expanded, graphite, Latent Heat Storage, molten binary salts, pcms, phase change materials, SEM, solution impregnation, Thermal Conductivity, thermal stability
Abstract: This article discussed the creation of phase change composite materials using molten binary salts and expanded graphite (EG). Three different salts were used, LiNO3–KCl, LiNO3–NaNO3 and LiNO3–NaCl. The amount of salt in the composites varied between 77.8% and 81.5%. The thermal conductivity of the products was assessed to determine how it was affected by the addition of expanded graphite. The researchers determined that they had increased the thermal conductivity of the composites between 4.9 to 6.9 times by adding the EG. Further investigations indicated that the phase change component of composites was stable, and that they maintained this characteristic past 100 cycles, indicating they could be applied in latent heat storage.
Reference: Solar Energy 107 (2014) 63–73