In present study, a 2D rectangular enclosure was considered as a latent thermal energy storage (LTES) system. Lauric acid was used as PCM material. The aim of this study was to use fins to enhance melting process of PCM. Position and shape of double fins were considered as investigating parameters. At first stage three different positions were considered for fins of rectangular shape. Results indicated that amongst aforementioned cases, best results were achieved when double fins were located at lower half of enclosure. Results revealed that up to 1800s could be saved during whole melting process. At second step, two trapezoidal form and one triangular shaped double fins were used to evaluate the effect of fin shape. In these cases, fins were placed at optimum position concluded from previous stage. Results presented that up to Fo=0.15, best values of Nusselt numbers were related to triangular shaped fins. After Fo=0.15, the case with triangular fin has least Nu number. The best melting performance was related to triangular fins at which 1000s less melting time was observed. Enhancement ratio results presented better performance for triangular fins after second of 2500s.

在本研究中，二维矩形外壳被视为潜热能存储（LTES）系统。月桂酸用作PCM材料。这项研究的目的是使用散热片来增强PCM的熔化过程。双翅片的位置和形状被认为是研究参数。在第一阶段，矩形鳍片考虑了三个不同的位置。结果表明，在上述情况下，当双鳍位于外壳的下半部时，可获得最佳结果。结果表明，整个熔化过程最多可节省1800s。第二步，使用两个梯形和一个三角形双鳍来评估鳍形状的影响。在这些情况下，将鳍片放置在上一阶段得出的最佳位置。结果表明，直到Fo = 0.15，Nusselt数的最佳值与三角形鳍有关。在Fo = 0.15之后，三角形鳍的情况下Nu数最少。最佳的熔化性能与三角鳍片有关，在三角鳍片处观察到的熔化时间减少了1000s。增强比结果表明，在2500秒后，三角形鳍片的性能更好。