Evaluation of dynamic-heat-storage performance of electric-thermal phase change energy storage system

doi:10.19799/j.cnki.2095-4239.2023.0676

Abstract

Abstract:

This study presents an electric-thermal phase change energy storage system using Na₂CO₃-K₂CO₃/MgO as the heat storage medium with a heating power of 100 kW, implemented through a modular integration concept. This research involves the development of composite thermal storage materials using physical methods. Characterization analysis techniques, including scanning electron microscopy and differential scanning calorimetry, are employed to examine the composition distribution and thermal storage properties of the composite materials. By analyzing the time-temperature test curve of the heat storage and release process, we introduce the heat storage or release progress function. Investigating the changing trend of the progress function curves in different positions of the system elucidates the dynamic-heat-storage/-release process. Our findings reveal that heat transfer of hot air accumulates from the center of the heat storage module to the top, gradually diffusing to the periphery during the heat storage process. During heat release, cold air absorbs heat successively from the center of the front module, the front module surface, the middle module surface, and the rear module surface along the wind path direction. Heat in the middle and rear thermal storage modules transfers from the center to the bottom, sides, and top surface areas, thereby diffusing to the surrounding areas. A comparative analysis of the progress functions of the heat storage system based on composite phase change material and magnesium iron oxide indicates that the system experiences faster heat storage and release processes when composite phase change material is employed as the heat storage medium. Setting the heating water temperature at 70—80 ℃, the stable heating time of the composite phase change heat storage system is determined to be 1100 min, representing a 37.5% increase compared to the magnesium iron oxide heat storage system. Therefore, this study helps promote the application of phase change thermal storage technology in heating systems and serves as a reference for studying the dynamic heat exchange process in electric heating phase change energy storage systems.

Key words: energy storage system, phase change storage, electric heating, dynamic thermal storage

CLC Number:

TK 229.92

Yixuan JIA, Jinyu JIANG, Yelong ZHANG, Pengfei SONG, Guizhi XU, Gaoqun ZHANG, Yi JIN. Evaluation of dynamic-heat-storage performance of electric-thermal phase change energy storage system[J]. Energy Storage Science and Technology, 2023, 12(12): 3670-3677.

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References 14

1	RAZMJOO A, GAKENIA KAIGUTHA L, VAZIRI RAD M A, et al. A Technical analysis investigating energy sustainability utilizing reliable renewable energy sources to reduce CO₂[J]. Renewable Energy, 2021, 164: 46-57.
2	YANG Q, ZHOU H W, BARTOCCI P, et al. Prospective contributions of biomass pyrolysis to China's 2050 carbon reduction and renewable energy goals[J]. Nature Communications, 2021, 12: 1698.
3	RAHMAN M M, ONI A O, GEMECHU E, et al. Assessment of energy storage technologies: A review[J]. Energy Conversion and Management, 2020, 223: 113295.
4	ARBABZADEH M, SIOSHANSI R, JOHNSON J X, et al. The role of energy storage in deep decarbonization of electricity production[J]. Nature Communications, 2019, 10: 3413.
5	LIU J Q, HU C, KIMBER A, et al. Uses, cost-benefit analysis, and markets of energy storage systems for electric grid applications[J]. Journal of Energy Storage, 2020, 32: 101731.
6	GE Z W, LI Y L, LI D C, et al. Thermal energy storage: Challenges and the role of particle technology[J]. Particuology, 2014, 15: 2-8.
7	GAUTAM A, SAINI R P. A review on sensible heat based packed bed solar thermal energy storage system for low temperature applications[J]. Solar Energy, 2020, 207: 937-956.
8	JIANG Z, PALACIOS A, ZOU B Y, et al. A review on the fabrication methods for structurally stabilised composite phase change materials and their impacts on the properties of materials[J]. Renewable and Sustainable Energy Reviews, 2022, 159: 112134.
9	ZHANG Y L, MIAO Q, JIA X, et al. Diatomite-based magnesium sulfate composites for thermochemical energy storage: Preparation and performance investigation[J]. Solar Energy, 2021, 224: 907-915.
10	PANCHAL J M, MODI K V, PATEL V J. Development in multiple-phase change materials cascaded low-grade thermal energy storage applications: A review[J]. Cleaner Engineering and Technology, 2022, 8: 100465.
11	吴娟, 毕月虹, 鲁一涵. 固体电蓄热技术研究现状及展望[J]. 电力需求侧管理, 2022, 24(2): 65-71.
	WU J, BI Y H, LU Y H. Research status and prospect of solid electric heat storage technology[J]. Power Demand Side Management, 2022, 24(2): 65-71.
12	尹浩, 唐志伟, 王昊, 等. 基于高密度复合相变储热材料电热锅炉的分时配比供热系统[J]. 储能科学与技术, 2022, 11(9): 3003-3010.
	YIN H, TANG Z W, WANG H, et al. Investigation on a time-sharing heating system using a high-density composite phase change heat storage material-an electric boiler[J]. Energy Storage Science and Technology, 2022, 11(9): 3003-3010.
13	刘圣冠, 乔磊, 翟鹏程, 等. 蓄热电锅炉供热技术及工程应用[J]. 热力发电, 2020, 49(8): 91-96.
	LIU S G, QIAO L, ZHAI P C, et al. Technology and engineering application of heating with thermal storage electric boiler[J]. Thermal Power Generation, 2020, 49(8): 91-96.
14	吴佳睿, 汉京晓, 唐志伟, 等. 高温相变蓄热电锅炉代替市政热水的应急系统[J]. 节能, 2020, 39(1): 54-56.
	WU J R, HAN J X, TANG Z W, et al. Emergency system of replacing municipal hot water with high temperature phase change thermal storage electric boiler[J]. Energy Conservation, 2020, 39(1): 54-56.

储热材料种类	主要成分	比热容/[J/(g·℃)]	密度(固体)/(g/cm³)	相变潜热/(J/g)
复合相变材料	35%Na₂CO₃, 35%K₂CO₃, 30%MgO	1.3	1.9	102.4
镁铁氧化物	88%MgO, 7.5%Fe₂O₃, 3%SiO₂, 1.5%CaO	1.1	2.8	0

系统参数	单位	数值
输入电压	V	380
电加热功率	kW	100
储热能力	MWh	1
储热模块尺寸	mm	3620×1280×1380
绝缘层厚度	mm	150
循环风机风量	m³/h	≤1800
循环风机功率	kW	4
循环风机频率调节范围	Hz	5～50
输出热量	kW	30
复合相变储热材料质量	t	3
供热水温度	℃	70～80
加热温差	℃	30

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[15]	Huamin ZHANG. Development， cost analysis considering various durations， and advancement of vanadium flow batteries [J]. Energy Storage Science and Technology, 2022, 11(9): 2772-2780.