新型复合蓄冷填充床的循环特性研究

何青; 白云斗

doi:10.19666/j.rlfd.202507119

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新型复合蓄冷填充床的循环特性研究

更新时间：2026-06-12

- 新型复合蓄冷填充床的循环特性研究
- Thermal Power Generation Vol. 55, Issue 4, Pages: 1-11(2026)
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202507119
  CLC： TK02
- Published：2026
- 稿件说明：
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[1]何青,白云斗.新型复合蓄冷填充床的循环特性研究[J].热力发电,2026,55(04):1-11.
[1]何青,白云斗.新型复合蓄冷填充床的循环特性研究[J].热力发电,2026,55(04):1-11. DOI： 10.19666/j.rlfd.202507119.

DOI：10.19666/j.rlfd.202507119.

摘要

为进一步提升液态空气储能蓄冷填充床的循环性能，采用有限元方法对二维连续固相模型的蓄冷填充床进行多循环研究，提出并分析了在填充床顶部以2种方式填充相变材料的性能改进方法，讨论了相变材料的热物理性质和填充厚度对复合蓄冷填充床关键性参数的影响。结果表明：复合蓄冷填充床与固相蓄冷填充床的往返效率均随循环次数增加而提高，在第10次循环后趋于准稳态，随着相变材料中间相变温度的升高，相变材料在循环中发生相变的概率逐渐降低；填充具有更高中间相变温度、体积热容及相变潜热的相变材料的复合蓄冷填充床，表现出更优的蓄/释冷性能；增加相变材料的填充厚度有助于进一步提升复合蓄冷填充床的整体性能；综合表现最佳的复合蓄冷填充床相较于固相蓄冷填充床，其蓄冷密度和往返效率分别提升15.2%和0.22百分点，而蓄冷效率仅降低了1.52百分点。该研究结果可为大容量液态空气储能的蓄冷填充床系统设计提供理论指导。

Abstract

To further improve the cycling performance of the cold storage packed bed for liquid air energy storage systems

a multi-cycle study was conducted on the two-dimensional continuous solid-phase model of the cold storage packed bed using the finite element simulation method. Performance improvement methods for filling phase change materials at the top of a packed bed in two different ways were proposed and analyzed. The influence of the thermal physical properties and filling thickness of different phase change materials on the key parameters of the composite cold storage packed beds was discussed. The results show that both the composite cold storage packed bed and the solid-phase cold storage packed bed have an increase in round-trip efficiency with the cycle times

and tend to a quasi-steady state in the 10 th cycle. As the intermediate phase transition temperature of the phase change material increases

the rate of phase transition occurring in the cycle gradually decreases. The composite cold storage packed bed filled with phase change materials with higher intermediate phase change temperature

higher volumetric heat capacity

and higher latent heat of phase change exhibits better performance. Increasing the filling thickness of phase change materials can help further improve the performance of composite cold storage packed beds. The composite cold storage packed bed with the best comprehensive performance shows an increase of 15.2% in cold storage density and 0.22 percentage points in round-trip efficiency compared to the solid phase cold storage packed bed

while the cold storage efficiency only decreases by 1.52 percentage points. The research can provide theoretical guidance for the design of cold storage packed bed systems for large capacity liquid air energy storage.

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