The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantages of high-energy storage density and the isothermal nature of the storage process. PCMs have been widely used in latent heat thermalstorage systems for heat pumps, solar engineering, and spacecraft thermal control applications. The uses of PCMs for heati...

in this paper, we present a fractional mathematical model of a one-dimensional phase phase change problem (stefan problem) with latent heat a power function of position. this model includes space-time fractional derivatives in caputo sense and time dependent surface heat flux. an approximate solution of this model is obtained by optimal homotopy asymptotic method (oham) to find an approximate s...

High-resolution calorimetry has been used to determine the heat capacity and latent heat associated with phase transitions in the homologous series of chiral liquid crystals nF2BTFOIM7 (3-fluoro-4(1-methylheptyloxy)4'-(4"-alkoxy-2",3"-difluorobenzoyloxy)tolane]. These compounds exhibit smectic-C* (SmC*), twist-grain-boundary (TGBA for n = 10, TGBC for n = ii, 12) and cholesteric (N*) phases. Al...

Latent heat storage using alloys as phase change materials (PCMs) is an attractive option for high-temperature thermal energy storage. Encapsulation of these PCMs is essential for their successful use. However, so far, technology for producing microencapsulated PCMs (MEPCMs) that can be used above 500°C has not been established. Therefore, in this study, we developed Al-Si alloy microsphere MEP...

With latent heat thermal energy storages, can be stored at a constant temperature level with high storage density using the enthalpy of solid-liquid phase change material. During discharge process storage, material (PCM) solidifies transfer surface and increases resistance. This decreases transferred power time state charge. The rotating drum exchanger, experimentally investigated in detail for...