单罐熔盐储热系统的放热性能实验

doi:10.19799/j.cnki.2095-4239.2025.0949

储能科学与技术

单罐熔盐储热系统的放热性能实验

李炜¹(✉)，聂阳彬²，李云飞¹，刘绍鹏¹，程晓君¹，张永学²(✉)

^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），北京昌平 102249

收稿日期:2025-10-23 修回日期:2025-12-11
通讯作者: 张永学 E-mail:liwei027.slyt@sinopec.com;zhyx@cup.edu.cn
作者简介:李炜（1981-），男，高级工程师，硕士研究生，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

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

LI Wei¹(✉)，NIE YangBin²，LI YunFei¹，LIU ShaoPeng¹，CHENG XiaoJun¹，ZHANG YongXue²(✉)

^1. Shengli Oilfield Technology Inspection Center, Dongying 257000, Shandong, China
^2. China University of Petroleum (Beijing), Changping, 102249, Beijing, China

Received:2025-10-23 Revised:2025-12-11
Contact: ZHANG YongXue E-mail:liwei027.slyt@sinopec.com;zhyx@cup.edu.cn

摘要/Abstract

摘要： 本文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。

关键词: 熔盐储热, 单罐系统, 放热性能, 直排管换热器, 静置散热

Abstract: This paper experimentally investigated the heat release performance of a single-tank molten salt storage system using a straight-tube heat exchanger, analyzing the temperature variation patterns during the heat storage, heat release, and static cooling processes. The experiments show that when the fan operates at full power, the system's maximum heat release power is 63.7 kW, the average heat release power is 46 kW, and the overall heat release efficiency reaches 88%, capable of heating cold water from 27°C to 64.4°C. During the heat release process, the molten salt temperature distribution is generally uniform, but near the air inlet, the temperature drops faster due to intense local heat exchange. In the 12-hour static cooling process, the molten salt temperature decreases linearly with a total drop of 36.8°C, the average cooling power is 4.8 kW, and significant vertical temperature stratification occurs, with a maximum temperature difference of 16.8°C. This study provides experimental support for the application of straight-tube heat exchangers in single-tank molten salt storage systems and offers reference value for regional heating and industrial heat storage engineering design.

Key words: Molten salt thermal energy storage, Single-tank system, Heat discharge performance, Straight-tube heat exchanger, Static cooling

中图分类号:

李炜, 聂阳彬, 李云飞, 刘绍鹏, 程晓君, 张永学. 单罐熔盐储热系统的放热性能实验[J]. 储能科学与技术, doi: 10.19799/j.cnki.2095-4239.2025.0949.

LI Wei, NIE YangBin, LI YunFei, LIU ShaoPeng, CHENG XiaoJun, ZHANG YongXue. Heat release performance test of a single tank molten salt thermal storage system[J]. Energy Storage Science and Technology, doi: 10.19799/j.cnki.2095-4239.2025.0949.

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