EN不同压缩比螺旋翅片对相变储能罐放热的影响机制
不同压缩比螺旋翅片对相变储能罐放热的影响机制
- 太阳能学报 2025年第11期 页码：87-97
- 作者机构：
- 作者简介：
- 基金信息：河北省自然科学基金（2022502052;E2022502001）
DOI：doi:10.19912/j.0254-0096.tynxb.2024-1213
中图分类号： K02-
网络出版：2025-12-04，
纸质出版：2025-12-04
- 稿件说明：
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袁威, 韩瑞元, 杜双庆, 等. 不同压缩比螺旋翅片对相变储能罐放热的影响机制[J]. 太阳能学报, 2025,(11):87-97.
袁威, 韩瑞元, 杜双庆, et al. 不同压缩比螺旋翅片对相变储能罐放热的影响机制[J]. 2025, (11): 87-97.
袁威, 韩瑞元, 杜双庆, 等. 不同压缩比螺旋翅片对相变储能罐放热的影响机制[J]. 太阳能学报, 2025,(11):87-97. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1213.
袁威, 韩瑞元, 杜双庆, et al. 不同压缩比螺旋翅片对相变储能罐放热的影响机制[J]. 2025, (11): 87-97. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1213.
摘要
螺旋翅片对于相变储能装置的强化传热有显著作用
以传统螺旋翅片为基础
使用4种不同压缩比的螺旋翅片分析翅片数目对相变材料凝固的影响。首先通过数值模拟对具有不同压缩比的螺旋翅片型储能罐中的相变材料凝固过程进行研究
并分析4个罐体内部温度分布以及相变界面随时间的变化情况。其次
分析液相分数、平均温度、总放热量、凝固时间和平均放热速率。最后
对比不同传热翅片数量对相变材料的影响。研究结果表明
设计压缩比合适的螺旋翅片可有效促进储能装置相变材料的凝固
减轻下部温度垂直分层现象
优化相变储能罐的放热性能。压缩比为3的储能罐中的相变材料平均放热速率与标准储能罐相比较
发现平均放热速率由86.7 J/s提升到93.9 J/s
增幅达8.7%;同时全部凝固所需时间减少6.6%。压缩比为5和7时
平均放热速率分别下降到84.7 J/s和63.8 J/s
分别下降2.3%和26.4%;完全凝固时间分别增加18%和38.7%。在相变材料（PCM）体积恒定情况下
翅片数量为8、10和12的储能罐的整体完成放热
翅片数量为14的储能罐放热效果反而不如翅片数量为6时
表明螺旋圈数并不是越多越好。凝固速度随着压缩比和翅片数量的增加呈先上升后下降的变化趋势
完全凝固所需的时间则是先减小后增加。
Abstract
Spiral fins play a significant role in enhancing heat transfer in phase-change energy storage devices. Four types of spiral fins with different compression ratios were used to analyze the effect of the number of fins on the solidification of phase change materials. First
the solidification process of the phase change material in the spiral fin energy storage tank with different compression ratios was numerically simulated
and the temperature distribution and change in the phase change interface in the four energy storage tanks with time were discussed. Second
the liquid phase fraction
average temperature
total heat release
solidification time
and average heat release rate were analyzed. The results indicate that the design of spiral fins with an appropriate compression ratio can effectively promote the solidification of phase-change materials in energy storage devices
reduce the phenomenon of vertical stratification at lower temperatures
and optimize the heat release performance of phase-change energy storage tanks. Compared with the standars energy storage tank
the average heat release rate of paraffin wax in the energy storage tank with a compression ratio of 3 increases from 86.7 J/s to 93.9 J/s
representing an increase of 8.7%. The complete solidification time is reduced by 6.6%. When the compression ratio is 5 and 7
the average heat release rate decreases to 84.7 J/s and 63.8 J/s
representing a decrease of 2.3% and 26.4%
respectively. The complete solidification time increases by 18% and 38.7%
respectively. For a constant volume of PCM
the energy storage tanks with 8
10
and 12 fins completes the heat release as a whole
and the heat release effect of the energy storage tank with 14 fins is not as good as that of the tank with 6 fins
indicating that more spiral turns are not always better. As the compression ratio and number of fins increase
the solidification rate initially increases and then decreases
while the time required for complete solidification decreases before increasing again.
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