Optimization of heat removal modes for heat exchanger in molten salt single storage tank

Suli SHI; Yuanwei LU; Qiang YU; Yuting WU

doi:10.11949/j.issn.0438-1157.20180712

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Optimization of heat removal modes for heat exchanger in molten salt single storage tank

Fluid dynamics and transport phenomena | 更新时间：2026-07-24

- Optimization of heat removal modes for heat exchanger in molten salt single storage tank
- CIESC Journal Vol. 70, Issue 3, Pages: 857-864(2019)
- 作者机构：
  
  北京工业大学环境与能源工程学院，北京 100124
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180712
  CLC： TK 124; TK11⁺5
- Received：02 July 2018，
  
  Revised：2018-09-21，
  
  Online First：24 July 2026，
  
  Published：05 March 2019
- 稿件说明：
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施素丽, 鹿院卫, 于强, 吴玉庭. 熔盐单罐释热过程换热器取热方式优选[J]. 化工学报, 2019, 70(3): 857-864

SHI Suli, LU Yuanwei, YU Qiang, WU Yuting. Optimization of heat removal modes for heat exchanger in molten salt single storage tank[J]. CIESC Journal, 2019, 70(3): 857-864
施素丽, 鹿院卫, 于强, 吴玉庭. 熔盐单罐释热过程换热器取热方式优选[J]. 化工学报, 2019, 70(3): 857-864 DOI： 10.11949/j.issn.0438-1157.20180712.

SHI Suli, LU Yuanwei, YU Qiang, WU Yuting. Optimization of heat removal modes for heat exchanger in molten salt single storage tank[J]. CIESC Journal, 2019, 70(3): 857-864 DOI： 10.11949/j.issn.0438-1157.20180712.

摘要

盘管释热换热器浸没式布置在熔盐单罐蓄热器内可实现低成本的蓄放热。盘管换热器取热方式会直接影响系统的释热性能。通过数值模拟研究了换热器取热方式对单罐蓄热系统释热性能规律的影响，同时分析了释热过程中熔盐侧流场变化。结果表明，换热器上进下出的取热方式能够提高盘管换热器的出口温度、单罐释热功率及释热效率，研究结果为熔盐单罐蓄放热系统设计提供了理论依据。

Abstract

Low cost heat charge and discharge can be realized by immersion arrangement of a helically coiled heat exchanger in molten salt single storage tank. Heat removal modes of the helically coiled heat exchanger will directly affect the heat discharge process of the storage system. Simulations were performed for two heat removal modes which include upper-lower path and lower-upper path. For different heat removal modes in the heat discharge process

the law of heat discharge performance of the molten salt single storage tank is given

and the change of flow field of molten salt side is analyzed. The results show that upper-lower path for the helically coiled heat exchanger can improve the transient out temperature

transient heat transfer rate and heat discharge efficiency. The research results provide a theoretical basis for the design of the molten salt single tank heat storage and discharge system.

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Keywords

references

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