Can a solid-liquid setup be used for a latent heat thermal energy storage system?

In this study we explored the possibility of a solid-liquid setup, with paraffin as the material, for a latent heat thermal energy storage system. Water was chosen as the heat transfer fluid (HTF) due to its suitable thermodynamic properties and the system operating temperature range.

Can low-cost filler materials reduce thermal oil?

For sensible storage, the reduction of thermal oil by low-cost filler materials and their compatibility is investigated at elevated temperature. It can be concluded that the materials are compatible up to 320 °C. At the component level, different macroencapsulations and immersed heat exchangers are tested for phase change materials.

Can phase change materials be used to store thermal energy?

Author to whom correspondence should be addressed. Thermal storage is very relevant for technologies that make thermal use of solar energy, as well as energy savings in buildings. Phase change materials (PCMs) are positioned as an attractive alternative to storing thermal energy.

What is latent thermal energy storage?

Latent thermal energy storages are using phase change materials (PCMs) as storage material. By utilization of the phase change, a high storage density within a narrow temperature range is possible. Mainly materials with a solid–liquid phase change are applied due to the smaller volume change.

Can natural rock and waste be used as fillers for thermal energy storage?

Natural rock and waste products from industry are materials typically proposed as fillers for thermal energy storage. The selected material must be compatible with the working fluid. For instance, Grosu et al. investigated natural byproduct materials for a thermocline-based thermal energy storage system.

What materials store sensible heat?

Typical materials to store sensible heat are solids such as sand, ceramic, graphene, rocks, and concrete and fluids such as water, oils, and molten salts . The amount of energy stored is determined by the specific heat capacity of the material, the variation in temperature, and the amount of material.