Abstract Heat storage systems are used as a method for transferring and controlling the cold load in hot seasons. In this paper, to analyze the phase changes of an ice-on-coil thermal storage tank, the process of ice formation in a cavity with refrigerant carrier tubes is carried out using numerical simulation. Moreover, performance of some heat transfer enhancement methods including usage of fins around tubes with various dimensions and numbers and various tube number and arrangement, are compared. In this study, the inlet temperature is considered to be 275 K, which the temperature decrease up to 10 K due to freezing is observed. According to the results, the fin height is a very effective parameter in increasing the freezing rate. Also, upon increasing the tube number with smaller diameter, ice is formed with a higher speed due to their uniform distribution. So, with the tube number increasing from 9 to 16 in these systems at the same time interval, the fluid temperature drops from about 275 to 269 K, as well as the volume fraction of liquid decrease from about 0.4 to 0.22. Finally, by changing the tube arrangement from rectangular to triangular, faster rate of ice formation are observed.

中文翻译：

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管布置和翅片对改善盘管冰蓄热系统结冰效果的数值研究

摘要 蓄热系统是一种在炎热季节转移和控制冷负荷的方法。在本文中，为了分析盘管冰蓄热罐的相变，使用数值模拟进行了带有制冷剂输送管的空腔内的结冰过程。此外，比较了一些传热增强方法的性能，包括在具有各种尺寸和数量以及各种管数和排列的管周围使用翅片。在这项研究中，入口温度被认为是 275 K，观察到由于冻结，温度下降了 10 K。根据结果​​，翅片高度是提高冷冻率的一个非常有效的参数。此外，在增加直径较小的管数时，由于冰的均匀分布，冰以更高的速度形成。因此，随着这些系统在同一时间间隔内管数从 9 增加到 16，流体温度从大约 275 下降到 269 K，以及液体的体积分数从大约 0.4 下降到 0.22。最后，通过将管子排列从矩形改为三角形，可以观察到更快的冰形成速度。