Heat Storage and Discharge Characteristics of Flat Filling Phase Change Thermal Energy Storage Tank

Liu Hanyi; Zhang Liang; Yang Yang; Cao Jiayuan

doi:10.12465/j.issn.0253-4339.2025.03.039

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Heat Storage and Discharge Characteristics of Flat Filling Phase Change Thermal Energy Storage Tank

Energy Storage Technology | 更新时间：2025-05-30

- Heat Storage and Discharge Characteristics of Flat Filling Phase Change Thermal Energy Storage Tank
- Journal of Refrigeration Vol. 46, Issue 3, Pages: 39-47(2025)
- 作者机构：
  
  上海理工大学能源与动力工程学院　上海　 200093
- 作者简介：
  
  Zhang Liang, male, associate professor, School of Energy and Power Engineering, University of Shanghai for Science and Technology, 86-13816670326, E-mail: L_zhanghk@163.com. Research fields: air conditioning, heat transfer performance of refrigeration system equipment, cryogenic refrigeration, performance testing of refrigeration devices, industrial heat pumps, and waste heat utilization technology.
- 基金信息：
- DOI：10.12465/j.issn.0253-4339.2025.03.039
  CLC： TK124;TB657.5
- Received：24 October 2024，
  
  Revised：13 November 2024，
  
  Accepted：09 December 2024，
  
  Published：16 June 2025
- 稿件说明：
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Liu Hanyi, Zhang Liang, Yang Yang, et al. Heat Storage and Discharge Characteristics of Flat Filling Phase Change Thermal Energy Storage Tank[J]. Journal of refrigeration, 2025, 46(3): 39-47.
DOI：

Liu Hanyi, Zhang Liang, Yang Yang, et al. Heat Storage and Discharge Characteristics of Flat Filling Phase Change Thermal Energy Storage Tank[J]. Journal of refrigeration, 2025, 46(3): 39-47. DOI： 10.12465/j.issn.0253-4339.2025.03.039.

摘要

设计一种平板式储料板填充相变材料的相变蓄热水箱，并建立了相同交错排列方式的蓄热水箱模型。通过实验和模拟，研究了平板填充式相变蓄热水箱的蓄放热性能，以及放水流量对相变材料放热性能的影响，分析了不同放水流量对增强相变材料放热性能的作用。结果表明：在98 L的水箱内以平板方式填充12.15 L的相变材料，使水箱蓄热量增加17.91%，同时改善系统运行的稳定性。通过分析不同放热模式下的流量，发现放水流量处于100~175 L/h时能够保持相变材料放热率达到88%以上，供热水量达到135 L，但随着流量继续增大，流体和相变材料换热不及时，相变材料放热率逐渐降至81.5%，供热水量减至125 L。提升相变材料在蓄热水箱内的放热性能既需确保充足的外部换热条件，也要从根本上提高相变材料的自身换热能力。

Abstract

In this study

a phase-change heat-storage water tank with a flat-plate storage plate was designed with phase-change materials. A heat-storage water tank model was constructed using the same staggered arrangement. Experiments and simulations were used to investigate the heat storage and discharge performances of a flat-plate-filled phase-change heat-storage water tank and the influence of the discharge flow rate on the heat release performance of the change materials. The role of different discharge flow rates in improving the heat release performance of phase change materials is discussed. The results show that filling a 98 L water tank with 12.15 L of phase change materials in a flat plate manner increased the heat storage capacity of the water tank by 17.91% while improving the stability of the system operation. By analyzing the flow rates under different heat release modes

it was found that at a discharge flow rate of 100-175 L/h

the heat release ratio of the phase change materials was maintained above 88%. The hot water supply volume reached 135 L. However

the heat transfer between the fluid and the phase change materials was no longer timely when the flow rate increased. The heat release ratio of the phase change materials gradually decreased to 81.5%

and the hot-water supply volume decreased to 125 L. To improve the heat discharge performance of phase change materials in a heat-storage water tank

it is necessary to ensure sufficient external heat transfer conditions and fundamentally improve the heat exchange capacity of the phase change materials.

关键词

Keywords

references

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