[1]韩振兴,许继雪,王朝宇.熔盐潜热蓄热装置的动态释热特性分析[J].郑州大学学报(工学版),2026,47(5):43-49,67.[doi:10.13705/j.issn.1671-6833.2025.05.013]
　HAN Zhenxing,XU Jixue,WANG Chaoyu.Analysis on Heat Release Characteristics of Molten Salt-based Latent Heat Thermal Energy Storage Device[J].Journal of Zhengzhou University (Engineering Science),2026,47(5):43-49,67.[doi:10.13705/j.issn.1671-6833.2025.05.013]
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熔盐潜热蓄热装置的动态释热特性分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
47
期数:
2026年5期
页码:
43-49,67
栏目:
出版日期:
2026-09-10

文章信息/Info

Title:
Analysis on Heat Release Characteristics of Molten Salt-based Latent Heat Thermal Energy Storage Device
文章编号:
1671-6833(2025)05-0043-07
作者:
韩振兴, 许继雪, 王朝宇
华北电力大学 能源动力与机械工程学院,北京 102206
Author(s):
HAN Zhenxing, XU Jixue, WANG Chaoyu
School of Energy, Power & Mechanical Engineering, North China Electric Power University, Beijing 102206, China
关键词:
相变;  熔盐;  凝固;  释热特性;  CFD;  多相流
Keywords:
phase change;  molten salt;  solidification;  heat release characteristics;  CFD;  multiphase flow
分类号:
TK02 TK11+4
DOI:
10.13705/j.issn.1671-6833.2025.05.013
文献标志码:
A
摘要:
为了给基于熔盐潜热蓄热能量利用系统设计与制定运行策略提供更多关键信息，采用数值分析方法对基于二元共晶硝酸盐（\boldsymbol{NaNO_3}和\boldsymbol{KNO_3}，质量比为23∶27）的管壳式结构相变蓄热单元的放热过程进行研究。通过对空气作为传热流体的相变蓄热单元内熔盐凝固释热过程的仿真计算，分析熔盐内温度与液相率等的动态演变特性、相变蓄热单元放热速率以及空气出口温度等随时间变化规律。计算结果表明：熔盐内自然对流效应在其凝固释热过程中仍然扮演重要角色；相变期间，熔盐液相率变化基本遵循抛物线规律，放热速率和空气出口温度线性下降趋势明显。
Abstract:
In order to provide more critical insights for the design and operational strategy of latent heat storage energy utilization systems based on molten salt, the heat release process of a phase change storage unit utilizing binary eutectic nitrates (\ce{NaNO_{3}} and \ce{KNO_{3}}, mass ratio of 23∶27) was investigated through numerical analysis in this study. The solidification and heat release processes in the phase change storage unit, with air serving as the heat transfer fluid, were simulated and calculated. Subsequently, the dynamic evolution characteristics of temperature and liquid phase fraction within the molten salt, the heat release rate of the phase change storage unit, and the outlet temperature of the air were analyzed and evaluated. The findings revealed that natural convection within the molten salt continued to play a significant role during the heat release process. As the phase transition progressed, the liquid phase fraction of the molten salt generally demonstrated a parabolic trend. Concurrently, both the heat release rate and the air outlet temperature exhibited linear decreases.

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更新日期/Last Update: 2026-09-04