COMPUTATIONAL ANALYSIS OF ENCAPSULATED THERMAL ENERGY PHASE CHANGE STORAGE SYSTEM: CYLINDRICAL AND SPHERICAL GEOMETRY

Computational method is used to analyse interface position and temperaturevariation of phase change thermal energy storage system (TESS) with constant heat flux for melting process. Conduction is the main phenomenon that governs the melting process. Spherical and cylindrical cavity is used to encapsulate the Phase change material to avoid direct contact between heat transfer fluid (HTF) and PCM, which is under fixed temperature boundary condition, applied only on one wall. Other walls are thermally insulated. The computational results are obtained for melting of solid initially at its fusion temperature by using computational fluid dynamics software.