Numerical investigation of heat transfer mechanism in a vertical shell and tube latent heat energy storage system
Numerical investigation of heat transfer mechanism in a vertical shell and tube latent heat energy storage system
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DOI：
10.1016/j.applthermaleng.2015.05.067
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发表时间：
2015-08
影响因子：
6.4
通讯作者：
Saeid Seddegh;Xiaolin Wang;A. Henderson
中科院分区：
文献类型：
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作者：
Saeid Seddegh;Xiaolin Wang;A. Henderson
分别采用纯热传导模型和导热-对流复合模型研究了立式圆柱壳-管式潜热蓄能机组的热行为和换热特性。数值模拟结果与已发表的实验数据进行了验证，表明对流-传导联合模型能较好地描述相变材料熔化过程中的能量传递。相反，在凝固过程中，传导换热更为重要。在总凝固时间方面，两种模型相差不大。
The thermal behavior and heat transfer characteristics of a vertical cylindrical shell and tube latent heat thermal energy storage (LHTES) unit are investigated using a pure thermal conduction model and a combined conduction-convection heat transfer model, respectively. The results from numerical simulation are validated with published experimental data which indicate that the combined convection and conduction model can better describe the energy transfer in the phase change materials (PCMs) during melting process. In contrast, heat transfer by conduction is more significant during the solidification process. In terms of total solidification time, the two models show little difference.