Heat release performance test of a single-tank molten salt thermal storage system

LI Wei; NIE Yangbin; LI Yunfei; LIU Shaopeng; CHENG Xiaojun; ZHANG Yongxue

doi:10.19799/j.cnki.2095-4239.2025.0949

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Heat release performance test of a single-tank molten salt thermal storage system

Special Issue on Multi\-Scenario Applications of Thermal and Cold Energy Storage | 更新时间：2026-07-01

- Heat release performance test of a single-tank molten salt thermal storage system
- Energy Storage Science and Technology Vol. 15, Issue 3, Pages: 760-768(2026)
- 作者机构：
  
  1.胜利油田技术检测中心，山东东营 257000
  2.中国石油大学(北京)，北京 102249
- 作者简介：
- 基金信息：
- DOI：10.19799/j.cnki.2095-4239.2025.0949
  CLC： TK 02
- Received：23 October 2025，
  
  Revised：2025-12-11，
  
  Published：28 March 2026
- 稿件说明：
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李炜, 聂阳彬, 李云飞, 等. 单罐熔盐储热系统的放热性能实验[J]. 储能科学与技术, 2026, 15(3): 760-768.

LI Wei, NIE Yangbin, LI Yunfei, et al. Heat release performance test of a single-tank molten salt thermal storage system[J]. Energy Storage Science and Technology, 2026, 15(3): 760-768.
李炜, 聂阳彬, 李云飞, 等. 单罐熔盐储热系统的放热性能实验[J]. 储能科学与技术, 2026, 15(3): 760-768. DOI： 10.19799/j.cnki.2095-4239.2025.0949.

LI Wei, NIE Yangbin, LI Yunfei, et al. Heat release performance test of a single-tank molten salt thermal storage system[J]. Energy Storage Science and Technology, 2026, 15(3): 760-768. DOI： 10.19799/j.cnki.2095-4239.2025.0949.

摘要

本工作通过实验研究了采用直排管换热器的单罐熔盐储热系统放热性能，分析了蓄热、放热及静置散热过程中的温度变化规律。实验表明，在风机全功率运行时，系统最大放热功率为63.7 kW，平均放热功率为46 kW，整体放热效率为88%，能够将冷水从27℃加热至64.4℃。放热过程中熔盐温度分布整体均匀，但空气进口附近因局部换热强，温度下降较快。在12小时静置散热过程中，熔盐温度线性下降，总降幅为36.8℃，平均散热功率为4.8 kW，垂直方向出现明显温度分层，最大温差达16.8℃。本研究为直排管换热器在单罐熔盐储热系统中的应用提供了实验依据，对区域供热及工业储热工程设计具有参考价值。

Abstract

This study experimentally investigates the heat release performance of a single-tank molten salt storage system that utilizes a straight-tube heat exchanger. The study analyzes temperature variation patterns during heat storage

heat release

and static cooling processes. The experiments reveal that when the fan operates at full power

the system achieves a maximum heat release power of 63.7 kW

an average heat release power of 46 kW

and an overall heat release efficiency of 88%

allowing it to heat cold water from 27℃ to 64.4℃. During the heat release phase

the temperature distribution of the molten salt is generally uniform. However

near the air inlet

the temperature drops more rapidly due to intense local heat exchange. In the 12 h static cooling phase

the molten salt temperature decreases linearly by a total of 36.8℃

with an average cooling power of 4.8 kW. Notably

significant vertical temperature stratification is observed

with a maximum temperature difference of 16.8℃. This study provides experimental evidence supporting the use of straight-tube heat exchangers in single-tank molten salt storage systems and offers valuable insights for regional heating and industrial heat storage engineering design.

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references

王韵怡, 张金亚. 太阳能储热井口原油加热系统性能研究[J]. 石油化工高等学校学报, 2025, 38(1): 49-58. DOI:10.12422/j.issn.1006-396X.2025.01.007.

WANG Y Y, ZHANG J Y. Study on solar heating crude oil system with thermal energy storage-based installation[J]. Journal of Petrochemical Universities, 2025, 38(1): 49-58. DOI:10.12422/j.issn.1006-396X.2025.01.007.

林长华, 李洋, 陈红伟, 等. 太阳能加热原油系统设计及热力学性能分析[J]. 辽宁石油化工大学学报, 2023, 43(1): 43-48. DOI:10.12422/j.issn.1672-6952.2023.01.008.

LIN C H, LI Y, CHEN H W, et al. Design and thermodynamic performance analysis of solar heating crude oil system[J]. Journal of Liaoning University of Petroleum & Chemical Technology, 2023, 43(1): 43-48. DOI:10.12422/j.issn.1672-6952. 2023.01.008.

姜竹, 邹博杨, 丛琳, 等. 储热技术研究进展与展望[J]. 储能科学与技术, 2022, 11(9): 2746-2771. DOI:10.19799/j.cnki.2095-4239.2021. 0538.

JIANG Z, ZOU B Y, CONG L, et al. Recent progress and outlook of thermal energy storage technologies[J]. Energy Storage Science and Technology, 2022, 11(9): 2746-2771. DOI:10.19799/j.cnki.2095-4239.2021.0538.

李昭, 李宝让, 陈豪志, 等. 相变储热技术研究进展[J]. 化工进展, 2020, 39(12): 5066-5085. DOI:10.16085/j.issn.1000-6613.2020-0376.

LI Z, LI B R, CHEN H Z, et al. State of the art review on phase change thermal energy storage technology[J]. Chemical Industry and Engineering Progress, 2020, 39(12): 5066-5085. DOI:10.16085/j.issn.1000-6613.2020-0376.

张钟平, 刘亨, 谢玉荣, 等. 熔盐储热技术的应用现状与研究进展[J]. 综合智慧能源, 2023, 45(9): 40-47. DOI:10.3969/j.issn.2097-0706. 2023.09.006.

ZHANG Z P, LIU H, XIE Y R, et al. Application and research progress of molten salt heat storage technology[J]. Integrated Intelligent Energy, 2023, 45(9): 40-47. DOI:10.3969/j.issn.2097-0706.2023.09.006.

CHE S, KIM J, JEON J, et al. Thermodynamic analysis of molten salt-based single-tank thermal energy storage system with heat transfer enhanced by gas injection[J]. Journal of Energy Storage, 2024, 77: 109959. DOI:10.1016/j.est.2023.109959.

SUN F, JI J X, ZENG G, et al. Employment of molten salt thermal energy storage coupled to coal-fired power unit for power grid peak shaving: A thermodynamic study[J]. Journal of Energy Storage, 2025, 131: 117503. DOI:10.1016/j.est.2025.117503.

CHEN X T, LU Y W, KONG Q L, et al. Research on dimensionless structure size of coil heat exchanger in heat discharging process of molten salt single tank heat storage system[J]. Applied Thermal Engineering, 2023, 219: 119367. DOI:10.1016/j.applthermaleng.2022.119367.

HOFFMANN J F, FASQUELLE T, GOETZ V, et al. Experimental and numerical investigation of a thermocline thermal energy storage tank[J]. Applied Thermal Engineering, 2017, 114: 896-904. DOI:10.1016/j.applthermaleng.2016.12.053.

KIM D H, YOON S H, KIM Y, et al. Experimental studies of the discharge performance of single-medium TES for CSP applications[J]. Applied Thermal Engineering, 2017, 127: 499-507. DOI:10.1016/j.applthermaleng.2017.08.057.

孙晓丽, 鹿院卫, 崔锡民, 等. 熔融盐单罐储热系统释热传热规律研究[J]. 工程热物理学报, 2016, 37(5): 1032-1037.

SUN X L, LU Y W, CUI X M, et al. Heat discharge research of molten salt in single energy storage tank[J]. Journal of Engineering Thermophysics, 2016, 37(5): 1032-1037.

施素丽, 张银和, 于强, 等. 熔盐单罐释热过程圆柱形隔板径向尺寸优选[J]. 太阳能学报, 2021, 42(4): 312-319. DOI:10.19912/j.0254-0096.tynxb.2018-1299.

SHI S L, ZHANG Y H, YU Q, et al. Radial dimension optimization of annular baffle in single thermal storage tank with molten salt[J]. Acta Energiae Solaris Sinica, 2021, 42(4): 312-319. DOI:10.19912/j.0254-0096.tynxb.2018-1299.

孔庆龙, 鹿院卫, 于强, 等. 熔盐单罐双盘管释热换热器布置方式优选[J]. 太阳能学报, 2022, 43(8): 209-215. DOI:10.19912/j.0254-0096.tynxb.2020-1388.

KONG Q L, LU Y W, YU Q, et al. Optimum layout of molten salt single tank double coil heat releasing heat exchanger[J]. Acta Energiae Solaris Sinica, 2022, 43(8): 209-215. DOI:10.19912/j.0254-0096.tynxb.2020-1388.

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