Choosing an appropriate phase change material (PCM) for specific application and ameliorating melting performance of PCMs with various thermophysical properties by optimizing fins are significant to achieve carbon peak and carbon neutralization. However, detailed influences of thermophysical properties on melting performances and optimum dimension of fins have not been deeply studied. Therefore, above issues are conducted numerically in this study. Results demonstrate that average melting rate increases by increasing all thermophysical properties except viscosity. Melting rate is additionally enhanced by 19.9% through optimizing the fins, their optimum dimensions decrease by increasing thermal conductivity, density, thermal expansion coefficient and latent heat of fusion. However, by increasing specific heat capacity and viscosity increases their optimum dimensions. Ranges of the optimum dimension (relative distance) of orthogonal fins (0.0592 to 0.1857) and maximum average melting rates (250.11 W to 839.36 W) are illustrated. Results effectively guide to choose appropriate PCMs and design optimum fins.

为特定应用选择合适的相变材料（PCM）并通过优化翅片改善具有各种热物理性质的PCM的熔化性能对于实现碳峰和碳中和具有重要意义。然而，尚未深入研究热物理性质对翅片熔化性能和最佳尺寸的详细影响。因此，本研究对上述问题进行了数值研究。结果表明，通过增加除粘度以外的所有热物理性质，平均熔化速率会增加。通过优化翅片，熔融速率额外提高了 19.9%，它们的最佳尺寸通过增加导热率、密度、热膨胀系数和熔化潜热而减小。然而，通过增加比热容和粘度来增加它们的最佳尺寸。说明了正交翅片的最佳尺寸（相对距离）（0.0592 到 0.1857）和最大平均熔化速率（250.11 W 到 839.36 W）的范围。结果有效地指导选择合适的PCM和设计最佳翅片。