Thermal energy storage: “How previous findings determine current research priorities”

Thermal energy storage is an expanding field within the subject of renewable energy technologies. After a listing of the different possibilities available for energy storage, this paper provides a comparison of various materials for High Temperature Thermal Energy Storage (HTTS). Several attributes and needs of each solution are listed. One in particular is using the latent heat as one of the most efficient ways to store thermal energy. The mixture of phase change material (PCM) embedded in a metal foam is optimising the thermal properties of the material for latent heat energy storage. The results of previous studies show that mechanical and thermal properties of foam were extensively studied separately. This paper highlights the potential for an advanced study of thermo-mechanical properties of metal foams embedded with PCM.

► The paper reviews the current applications and principles of heat energy storage. ► High temperature thermal storage is specifically considered. ► Latent heat and phase change materials are highlighted. ► Metal foams are considered to enhance thermal properties. ► Current knowledge and understanding leads to priorities for future research.