Improvement of performance of energy storage system with involving nanomaterial and complex geometry

The enhancement of solidification involving additives was discussed in current paper. The additives are nano-sized additives of copper oxide with various sizes. The applied geometry has a sinusoidal cold wall as the left side surface and fins with branch shape have been utilized to increase speed of freezing. The required properties of NEPCM were measured based on formulation of homogeneous model. FEM was hired to simulate the procedure and the mesh was adapted with the position of the ice front. With an augment in the fraction of CuO, the rate of freezing has improved about 41.16 %. Also, there is optimized size for powders in which highest conductivity can be achieved. With an increase of size from minimum size to middle size, freezing time decreases about 19.94 %. •The enhancement of solidification involving additives has been discussed.•With an increase in ϕ, the rate of freezing has improved about 41.16 %.•With an increase of dp to middle size, freezing time decreases about 19.94 %.