There has been much emphasis in taking corrective measures to overcome the global warming and integrating the renewables into the energy systems, along with the pathway of the energy storage are the active fields of current research. One of the method is by using thermal energy storage. There are three types of thermal energy storage, namely sensible heat, latent heat and thermal chemical storage system. It is reported that thermal energy storage density for latent heat storage is higher than sensible heat storage. Latent heat storage system using phase change material (PCM) has been widely investigated and explored by various researchers. PCMs offer promising thermal storage characteristic where they can absorb and release large amount of latent heat during phase transition process.
An CFD investigation of the melting of paraffin wax dispersed with three different metal oxide Alumina (Al2O3), Zirconium Dioxide(ZrO2) & Titanium Dioxide (TiO2) Iterate for different concentration (i.e. 1% & 3% for both) that is heated from one side of rectangular enclosure of dimensions of 25 mm × 75 mm. The melting percentage of PCM having 3% TiO2 concentration is more compared to nanoparticle concentration of 1% (Al2O3, ZrO2 and TiO2) and 3% (Al2O3, ZrO2).It requires 1000 Sec for paraffin wax + TiO2 (3%) to 86% melt while in case of paraffin wax + Al2O3 (3%) to 81% melt and in case of paraffin wax + ZrO2 78% to melt.