单罐熔盐储热系统的放热性能实验

李炜; 聂阳彬; 李云飞; 刘绍鹏; 程晓君; 张永学

doi:10.19799/j.cnki.2095-4239.2025.0949

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单罐熔盐储热系统的放热性能实验

储热储冷多场景应用专刊 | 更新时间：2026-07-01

- 单罐熔盐储热系统的放热性能实验
- Heat release performance test of a single-tank molten salt thermal storage system
- 储能科学与技术 2026年15卷第3期页码：760-768
- 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：
  
  李炜（1981—），男，硕士，高级工程师，研究方向为油田节能技术，E-mail：liwei027.slyt@sinopec.com；
  张永学，教授，主要研究方向为动力工程及工程热物理，E-mail：zhyx@cup.edu.cn。
- 基金信息：
- DOI：10.19799/j.cnki.2095-4239.2025.0949
  中图分类号： TK 02
- 收稿：2025-10-23，
  
  修回：2025-12-11，
  
  纸质出版：2026-03-28
- 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

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