Nowadays, due to the global need for energy and the limited amount of fossil fuels, it is required to utilize alternative forms of energy. Thermal energy storage systems together with phase change materials are considered potential options to help achieve renewable energy development goals. Special groups of materials are used for thermal management in thermal processes due to their specific properties such as high latent heat, appropriate phase change temperature, and slight volume change during phase change. In this study, the effects of branch-shaped fins with different thicknesses and lengths on the thermal conductivity of phase change materials are investigated. Furthermore, the different volume ratios is studied. The results show that using thinner branch-shaped fins and hybrid Al₂O₃ – Cu with volume ratio of 0.04 has greater influence on the speed of the solidification process. The results also illustrate that the use of fins significantly speeds up the solidification process. The comparison between thin and thick fins revealed that the thin fin is a more viable option in increasing heat transfer rate. In this simulation, the finite element method has been employed. Generally, simultaneous use of thin branch-shaped fins and nanoparticles with volume fraction 0.04 leads to maximum efficiency in the simulation.

如今，由于全球对能源的需求以及化石燃料的数量有限，因此需要利用替代形式的能源。热能存储系统与相变材料一起被认为是帮助实现可再生能源发展目标的潜在选择。特殊的材料组由于其特殊的特性（例如高潜热，适当的相变温度和相变过程中的微小变化）而在热过程中用于热管理。在这项研究中，研究了具有不同厚度和长度的分支状鳍片对相变材料导热系数的影响。此外，研究了不同的体积比。结果表明，使用较薄的分支状鳍片和混合的Al ₂ O ₃–体积比为0.04的铜对凝固速度的影响更大。结果还表明，使用散热片可显着加快固化过程。薄翅片和厚翅片之间的比较表明，在提高传热速率方面，薄翅片是更可行的选择。在此仿真中，采用了有限元方法。通常，同时使用体积分数为0.04的细树枝状鳍片和纳米颗粒会导致模拟效率最大化。