Published Paper Details:

Nowadays, numerous problems, including the environmental problem caused by fossil fuels, have led to greater attention to the optimal use of energy and the development of renewable energy. Among the many ways introduced for energy storage, thermal energy storage, including latent heat, is among the most interesting. This storage is done with materials called phase change materials (PCMs). These materials store the energy in the form of latent heat at constant temperature during the phase transition, and release the same stored energy in the crystallization process. n-Eicosane(C20) constitute a class of solid-liquid organic phase change materials (PCMs). However, low thermal conductivity limits their feasibility in thermal energy storage (TES) applications. Adding a suitable proportion of expanded graphite (EG) into the n-Eicosane(C20) can enhance the heat transfer rate, thus improve the thermal conductivity of the whole heat storage system. In this research thermal conductivity of n-Eicosane/ Expanded Graphite composite can be determined after preparing the composite phase change material. Thermal conductivity of pure paraffin based phase change materials are varying from 0.2 W/m K to 0.3 W/m K. As compare to the pure n-Eicosane PCM, thermal conductivity of n-Eicosane(C20)/ Expanded Graphite(EG) composite phase change material ( CPCM) may increase up to 2 to 3 times by the weight percentage of Expanded graphite added to the n-Eicosane