LAUSR

Abstract This research deals with solidification procedure of phase-changing material (PCM) in a Latent Heat Thermal Energy Storage System (LHTESS). Rectangular fin made of copper and triplex container are utilized in this study and also different volume fractions of Hybrid Nano-Particles (HNP) (TiO2-Go) are added to the water. In present research, water is regarded as PCM. The purpose of this research is to inquire the effect of HNPs, fins and shape factor of nanoparticles on acceleration of the solidification process. As an innovation, a new hexagonal geometry along with fins is employed in LHTESS. Galerkin Finite Element Method (GFEM) is applied to solve the governing equations and coding is carried out by an open source application. Results indicated that applying fins and HNPs reduces the full solidification time up to 12% and also using lamina shaped HNPs reduces the full solidification time up to 4% more than brick shaped.