@ARTICLE{Cheriet_Nassira_Influence_2024, author={Cheriet, Nassira and Benlekkam, Mohamed Lamine and Kherris, Sahraoui}, volume={vol. 71}, number={No 2}, journal={Archive of Mechanical Engineering}, pages={189-211}, howpublished={online}, year={2024}, publisher={Polish Academy of Sciences, Committee on Machine Building}, abstract={The present numerical study is concerned with the impact of fin shape design on the thermal efficiency of phase change material (PCM)-based thermal energy storage (TES) unit, assuming the same surface area occupied by fins. Comparison of two different finned TES units equipped with rectangular and triangular fin shapes, respectively, showed significant enhancements in PCM melting activity. Comparative analysis demonstrated that triangular fin shape lowers PCM melting time by 12.64% for equivalent fin numbers, and by 15.38% for equal fin lengths due to the increased heat transfer area provided by the triangular shape. Further examination of fins with triangular shape in terms of spacing and length, under fixed thickness and size parameters, revealed significant reduction in melting time with increasing fins length. Notably, a 50.75% decrease in melting time was achieved by decreasing the number of fins to 20 while increasing fin length to 10 mm. Moreover, maintaining heat transfer fluid (HTF) temperature 20 K higher than the melting PCM temperature maximizes TES thermal efficiency. These outcomes emphasize the importance of optimizing fin shape design for enhancing heat transfer without affecting the energy storage capacity of TES systems, with potential applications in thermal management systems.}, type={Article}, title={Influence of fin shape design on thermal efficiency of phase change material-based thermal energy storage unit}, URL={http://rhis.czasopisma.pan.pl/Content/131228/PDF/AME_2024_12.pdf}, doi={10.24425/ame.2024.150564}, keywords={heat storage, PCM, fins shape, melting process, heat exchanger, surface area}, }