Numerical Study on the Effect of Rotation Mechanism upon Solidification Characteristics of a Triplex-Tube Thermal Energy Storage System

被引：0
|
作者：
Wang F. [1 ,2 ]
Du Z. [1 ,2 ]
Yang K. [1 ,2 ]
Huang X. [2 ]
Guo J. [2 ]
Yang X. [2 ]
机构：
[1] China Northwest Architecture Design and Research Institute Co.Ltd., Xi'an
[2] School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2023年 / 57卷 / 02期
关键词：
latent heat energy storage; numerical simulation; rotation mechanism; solidification performance; triplex-tube thermal energy storage system;
D O I：
10.7652/xjtuxb202302002
中图分类号：
学科分类号：
摘要：
To improve the solidification performance of triplex-tube thermal energy storage system, the rotation mechanism is applied to the solidification process and a corresponding numerical simulation is carried out in this paper. The accuracy of numerical models is verified by comparing with experimental data and the influences of rotation on the liquid phase distribution, temperature distribution, and flow velocity field in the exothermic process are explored. The liquid phase evolution, total amount of heat energy release, and heat energy release rate of the triplex-tube thermal energy storage system without rotation and at different rotational speeds are compared and analyzed. The results demonstrate that the application of rotation effectively reduces the solidification time and increases the heat release rate of the system, but the total heat release decreases slightly in individual solidification cycles. The solidification time of phase change materials at 0.5 r/min is reduced by 78.1% compared with that under static state, while the heat release rate is 4.45 times that under static state. However, the total heat release decreases by 2.52%. The research provides guidance for the design and application of rotation mechanism in triplex-tube thermal energy storage system. © 2023 Xi'an Jiaotong University. All rights reserved.
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页码：12 / 20
页数：8
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