内管移动对卧式管壳相变储热器储放热性能影响的实验研究

doi:10.11949/0438-1157.20250551

化工学报 ›› 2025, Vol. 76 ›› Issue (10): 5402-5413.DOI: 10.11949/0438-1157.20250551

内管移动对卧式管壳相变储热器储放热性能影响的实验研究

王胜杰¹(), 周少斌¹, 高明¹(), 武治星², 郭文强², 张伟², 姜君², 冉劼², 王晓³

^1.山东大学核科学与能源动力学院，高效储能与氢能利用山东省工程研究中心，山东济南 250061
^2.内蒙古国龙能源管理有限责任公司，内蒙古呼和浩特 010000
^3.山东发展投资控股集团有限公司，山东济南 250000

收稿日期:2025-05-19 修回日期:2025-07-24 出版日期:2025-10-25 发布日期:2025-11-25
通讯作者: 高明
作者简介:王胜杰（2001—），男，硕士研究生，wsj2029@mail.sdu.edu.cn
基金资助:
山东省自然科学基金项目(ZR2023ME025);内蒙古自治区中央引导地方科技发展资金项目(2024ZY0125)

Experimental study on influence of inner tube movement on charging-discharging performance in horizontal shell-and-tube phase change thermal energy storage exchanger

Shengjie WANG¹(), Shaobin ZHOU¹, Ming GAO¹(), Zhixing WU², Wenqiang GUO², Wei ZHANG², Jun JIANG², Jie RAN², Xiao WANG³

^1.Shandong Engineering Research Center for High-efficiency Energy Storage and Hydrogen Energy Utilization, School of Nuclear Science, Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China
^2.Inner Mongolia Guolong Energy Management Co. , Ltd. , Hohhot 010000, Inner Mongolia, China
^3.Shandong Development & Investment Holding Group Co. , Ltd. , Jinan 250000, Shandong, China

Received:2025-05-19 Revised:2025-07-24 Online:2025-10-25 Published:2025-11-25
Contact: Ming GAO

摘要/Abstract

摘要：

为改善管壳式相变储热器的储放热性能，基于内管可移动卧式管壳相变储放热实验平台，结合高精图数采集系统与固液相界面定量表征方法，研究了换热内管在既定竖直运动方向下不同移动速率（0.01、0.05和0.1 mm·s^-1）与移动距离（5、10和20 mm）对储放热特性的影响规律。结果表明，内管运动可有效强化相变材料的传热过程，储放热性能随内管移动速率和距离的增加而增强。与静止状态相比，优化的内管运动策略下储放热时间分别减少5221和1978 s，平均温度变化率分别提高至静止时的1.82倍和1.07倍。研究结论可为内管移动式相变储热装置的优化设计提供指导，并为主动强化传热技术的研究奠定基础。

关键词: 管壳式相变储热器, 内管移动, 储放热性能, 实验验证, 相变, 传热

Abstract:

To systematically enhance the charging and discharging performance of a shell-and-tube phase change thermal energy storage exchangers, this study utilized a horizontal shell-and-tube experimental platform with a movable inner tube, combined with a high-precision image acquisition system and a quantitative solid-liquid interface characterization method. We investigated the effects of different inner-tube vertical translation speeds (0.01 mm·s^-1, 0.05 mm·s^-1, and 0.1 mm·s^-1) and translation distances (5 mm, 10 mm, and 20 mm) on charging and discharging characteristics. The results demonstrate that inner-tube motion can effectively intensify the heat-transfer process of the phase-change material, with charging/discharging performance improving as the translation speed and distance increase. Compared to the static state, the optimized inner tube movement strategy reduces the heat storage and release times by 5221 s and 1978 s, respectively, and the average temperature change rate increases to 1.82 times and 1.07 times that of the static state, respectively. These findings provide guidance for the optimal design of movable-tube phase change thermal energy storage devices and lay the groundwork for active heat-transfer enhancement technologies.

Key words: shell-and-tube phase change thermal energy storage exchanger, inner tube movement, charging and discharging performance, experimental validation, phase change, heat transfer

中图分类号:

TK 124

王胜杰, 周少斌, 高明, 武治星, 郭文强, 张伟, 姜君, 冉劼, 王晓. 内管移动对卧式管壳相变储热器储放热性能影响的实验研究[J]. 化工学报, 2025, 76(10): 5402-5413.

Shengjie WANG, Shaobin ZHOU, Ming GAO, Zhixing WU, Wenqiang GUO, Wei ZHANG, Jun JIANG, Jie RAN, Xiao WANG. Experimental study on influence of inner tube movement on charging-discharging performance in horizontal shell-and-tube phase change thermal energy storage exchanger[J]. CIESC Journal, 2025, 76(10): 5402-5413.

图/表 15

图1 内管移动储热器实验测试平台系列图

Fig.1 Shell-and-tube phase change thermal energy storage exchanger with mobile inner tube experimental test platform series figure

表1 RT25 PCM物性参数

Table 1 Physical property parameter of RT25 PCM

物性参数	数值
熔化温度/K	298.15
潜热/(J·g^-1)	228
密度/(g·cm^-3)	液相：0.76；固相：0.78
热导率/(W·m^-1·K^-1)	0.2
黏度/(kg·m^-1·s^-1)	0.0017
热膨胀系数	0.001
比热容/(J·g^-1·K^-1)	液相：2.4；固相：1.8

图2 图像处理过程（以储热过程为例）

Fig.2 Image processing procedure (the charging process)

表2 内管运动参数设置

Table 2 Inner tube motion parameter setting

参数	数值
内管移动速率/（mm·s^-1）	0.01、0.05、0.1
内管移动距离/mm	5、10、20
内管移动方向	-y

图3 实验流程示意图

Fig.3 Schematic diagram of the experimental procedure

图4 内管静止状态储热过程温度曲线

Fig.4 Temperature curves for the charging process under stationary conditions

图5 内管静止状态储热过程液相变化

Fig.5 Liquid phase change for the charging process under stationary conditions

图6 内管静止状态放热过程温度曲线

Fig.6 Temperature curves under stationary conditions during the discharging process

图7 内管静止状态放热过程固相变化

Fig.7 Solid phase change for the discharging process under stationary conditions

图8 不同速率工况固液相分数变化曲线

Fig.8 Solid-liquid phase fraction variation curve for different speed conditions

图9 不同速率工况固液相变化与单固相叠加投影图

Fig. 9 Single solid-phase superposition projections for different speed conditions

图10 不同距离工况固液相分数变化曲线

Fig.10 Solid-liquid phase fraction variation curve for different distance conditions

图11 不同距离工况固液相变化与单固相叠加投影图

Fig.11 Single solid-phase superposition projections for different distance conditions

表3 内管静止状态性能评价参数

Table 3 Performance evaluation parameter of inner tube stationary condition

性能指标	数值
β_m/%	54.84
β_s/%	32.63
P_m/W	128.05
P_s/W	32.90
V_T/(℃·min^-1)	0.229
$V T'$ /(℃·min^-1)	0.397
Δτ_0-2/s	11702
Δτ_30%/s	13665

表3 内管静止状态性能评价参数

Table 3 Performance evaluation parameter of inner tube stationary condition

性能指标	数值
β_m/%	54.84
β_s/%	32.63
P_m/W	128.05
P_s/W	32.90
V_T/(℃·min^-1)	0.229
$V T'$ /(℃·min^-1)	0.397
Δτ_0-2/s	11702
Δτ_30%/s	13665

图12 不同内管移动参数对储放热性能的影响

Fig.12 Effect of different inner tube movement parameters on charging and discharging performance

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内管移动对卧式管壳相变储热器储放热性能影响的实验研究

Experimental study on influence of inner tube movement on charging-discharging performance in horizontal shell-and-tube phase change thermal energy storage exchanger

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