Impact of Spiral Fins and Circular Fins on Heat Transfer Performance in Phase Change Energy Storage Tanks

YUAN Wei; HAN Ruiyuan; DU Shuangqing; YANG Xianliang

doi:10.19805/j.cnki.jcspe.2025.240452

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Impact of Spiral Fins and Circular Fins on Heat Transfer Performance in Phase Change Energy Storage Tanks

更新时间：2026-10-10

- Impact of Spiral Fins and Circular Fins on Heat Transfer Performance in Phase Change Energy Storage Tanks
- Chinese Journal of Power Engineering Vol. 45, Issue 9, Pages: 1463-1473(2025)
- 作者机构：
  
  华北电力大学能源动力与机械工程学院,北京,102206
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240452
  CLC：
- Online First：16 September 2025，
  
  Published：2025
- 稿件说明：
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袁威,韩瑞元,杜双庆,杨先亮. 螺旋翅片和环形翅片对相变储能罐传热性能的影响动力工程学报, 2025, 45(9): 1463-1473 https://doi.

org/10.19805/j.cnki.jcspe.2025.240452
袁威,韩瑞元,杜双庆,杨先亮. 螺旋翅片和环形翅片对相变储能罐传热性能的影响动力工程学报, 2025, 45(9): 1463-1473 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240452.

org/10.19805/j.cnki.jcspe.2025.240452 DOI：

摘要

为研究螺旋翅片和环形翅片对垂直管壳式相变储能罐换热性能的影响

选取具有更好传热性能的翅片结构

并建立了光管、环形翅片和螺旋翅片的管壳式相变储能罐的物理模型。在考虑自然对流的情况下

对蓄热和放热过程进行了数值模拟

分析了不同储能罐中相变材料的温度场、固液相界面、平均温度、液相质量分数、不同监测点温度随时间的变化规律;探讨了不同储能罐的综合热性能表现

对比分析了影响储能罐蓄、放热速率的主要因素。结果表明:有无翅片对导热系数低的相变材料有重大影响

翅片结构能明显减少换热过程中储能罐内相变材料的熔化和凝固时间;径向伸展的环形翅片限制了自然对流

而螺旋翅片具有连续结构

具有3种结构中最好的换热速率

且随着翅片高度的增加

换热效果增强;蓄热过程中

在垂直方向

储能罐上部温度高

相变材料先熔化

径向靠近内管的相变材料熔化得快;放热过程则相反

垂直方向下部以及径向内侧的相变材料先凝固。

Abstract

To study the impact of spiral fins and circular fins on the heat transfer performance of the vertical tube-and-shell phase change energy storage tanks

the fin structure with better heat transfer performance was selected

and physical models of tube-and-shell phase change energy storage tanks with plain tubes

circular fins

and spiral fins were established. Considering natural convection

numerical simulations were conducted for the charging and discharging processes. The temporal variations of temperature field of the phase change materials

solid-liquid interface

average temperature

liquid phase mass fraction

and the temperatures at different monitoring points in various storage tanks were analyzed. The overall thermal performance of different storage tanks was discussed

and the main factors affecting the charging and discharging rate of the storage tanks were compared and analyzed. Results show that the presence or absence of fins has a significant impact on phase change materials with low thermal conductivity. The fin structure can significantly reduce the melting and solidification time of the phase change materials in the energy storage tanks during the heat transfer process. Radially extended circular fins restrict natural convection

while spiral fins

with their continuous structure

exhibit the best heat transfer rate among the three structures

and the heat transfer effect improves with increasing fin height. During the charging process

in the vertical direction

the upper part of the energy storage tank has a higher temperature

and the phase change materials melt first. In the radial direction

the phase change materials near the inner tube melt faster. The opposite occurs during the discharging process

where the phase change materials at the lower part in the vertical direction and the inner side in the radial direction solidify first.

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references

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