To address the low thermal conductivity of phase change materials and e improve heat storage, a novel rotating T-LHTESU structure is proposed. Numerical simulations systematically analyze the effects of rotation speed, various eccentricities and wall temperature on the performance of phase change heat storage. The results show that the introduction of rotation in the intermediate sleeve shortens the melting time with increasing rotation speed, reaching a maximum reduction of 61.66 % at 2 rps. Furthermore, the melting rate at 1 rps and 2rps first decreases and then increases with increasing eccentricity. At an eccentricity of 10 mm and 2 rps, the melting time is reduced by 7.23 % compared to the non-eccentric model. In addition, a higher wall temperature accelerates the change in the liquid phase fraction and increases the energy input. At a wall temperature of 371.15 K, the melting time is reduced by 73.56 % compared to the stationary model, with an increase in total heat by 2.52 %. This study provides theoretical guidelines for subsequent research on phase change heat transfer.

中文翻译：

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主动旋转罐壁耦合翅片结合偏心设计的相变蓄热强化研究

为了解决相变材料导热率低的问题并改善储热，提出了一种新型旋转T-LHTESU结构。数值模拟系统地分析了转速、各种偏心率和壁温对相变储热性能的影响。结果表明，随着转速的增加，在中间套筒中引入旋转缩短了熔化时间，在2 rps时最大减少了61.66%。此外，随着偏心率的增加，1 rps和2rps下的熔化速率先减小后增加。在偏心率为 10 mm 和 2 rps 时，与非偏心模型相比，熔化时间减少了 7.23%。此外，较高的壁温会加速液相分数的变化并增加能量输入。在壁温为 371.15 K 时，与静止模型相比，熔化时间减少了 73.56%，总热量增加了 2.52%。该研究为后续相变传热研究提供了理论指导。