Design of phase-change heat and energy storage system based on CPCM hexagonal and simulation of heat storage and release

doi:10.16085/j.issn.1000-6613.2024-0890

Abstract

Abstract:

The phase-change heat storage and energy storage system was designed, and the regular hexagonal brick and composite phase change materials (CPCM) were innovatively adopted. The characteristics of the heat storage and release process of the phase-change heat storage and energy storage system were numerically simulated by ANSYS Fluent, and the heat storage and release process was studied. The influence of the shape, material and heating power of the phase-change thermal storage brick on the heat storage process of the designed phase-change thermal storage system, as well as the influence of CPCM thermal storage temperature, air inlet flow rate and air inlet temperature on the heat release process were investigated. The simulation results showed that under the heating power of each heating rod of 0.7kW, the charging time required for the heat storage process was about 7.7h, and the average temperature of the heat storage body could reach 870℃. The simulation results met the design requirements. The regular hexagonal brick showed better heating uniformity, the heat accumulator with CPCM had better heat storage performance, and the increase of heating power could greatly accelerate the heat storage process. In the heat release process, 1m/s air inlet flow rate was more appropriate, and the required discharge time was 14.6h. The faster the air inlet flow rate, the lower the temperature and the lower the CPCM heat storage temperature, the higher the heat release rate of the system. The total heat storage and release time of the system was about 22.3h, which could realize the utilization of peak and valley electricity well.

Key words: energy storage system, regular hexagonal brick, composite phase change materials, heat storage and release, numerical simulation

摘要：

设计了相变蓄热储能系统，创新性地采用了正六边形砖和复合相变材料（composite phase change materials，CPCM），利用ANSYS Fluent进行相变蓄热储能系统蓄放热过程特性数值模拟对蓄放热过程进行研究，探究相变蓄热砖的形状、相变蓄热砖的材料以及加热功率对所设计相变蓄热储能系统蓄热过程的影响，以及CPCM蓄热温度、空气入口流速以及空气入口温度对其放热过程的影响。模拟结果表明，在每根加热棒的加热功率为0.7kW的加热条件下，蓄热过程所需的充电时间约为7.7h，蓄热体平均温度可达870℃，模拟结果符合设计要求；正六边形砖展现出更好的加热均匀性，采用CPCM后的蓄热体具有更好的蓄热性能，加热功率的增加可以很大程度上加快蓄热过程；放热过程采用1m/s空气入口流速较为合适，此时所需的放电时间为14.6h，空气入口流速越快、温度越低、CPCM蓄热温度越低的情况下系统的放热速率越高。系统总的蓄放热时间约为22.3h，能够较好实现谷电利用。

关键词: 储能系统, 正六边形砖, 复合相变材料, 蓄放热, 数值模拟

CLC Number:

TK02

YIN Shaowu, HUANG Ruoxiao, ZAN Xiaojun, TONG Lige, LIU Chuanping, WANG Li. Design of phase-change heat and energy storage system based on CPCM hexagonal and simulation of heat storage and release[J]. Chemical Industry and Engineering Progress, 2024, 43(S1): 243-254.

尹少武, 黄若萧, 昝晓君, 童莉葛, 刘传平, 王立. 基于CPCM正六边形砖的蓄热储能系统设计与蓄放热模拟[J]. 化工进展, 2024, 43(S1): 243-254.

Figures/Tables 20

References 21

1	黄宁燕. 可再生能源推进、存储和传输技术研究趋势[J]. 科技中国, 2024(4): 98-101.
	HUANG Ningyan. Research trend of renewable energy promotion, storage and transmission technology[J]. Scitech in China, 2024(4): 98-101.
2	YADAV Subhash, KUMAR Pradeep, KUMAR Ashwani. Techno-economic assessment of hybrid renewable energy system with multi energy storage system using HOMER[J]. Energy, 2024, 297: 131231.
3	Truong Hoang Bao HUY, LE Tien-Dat, Pham VAN PHU, et al. Real-time power scheduling for an isolated microgrid with renewable energy and energy storage system via a supervised-learning-based strategy[J]. Journal of Energy Storage, 2024, 88: 111506.
4	张承虎, 师熙隆, 朱添奇, 等. 适用于建筑供热蓄热技术的应用与发展[J]. 煤气与热力, 2023, 43(5): 15-19.
	ZHANG Chenghu, SHI Xilong, ZHU Tianqi, et al. Application and development of heat storage technologies suitable for building heating[J]. Gas & Heat, 2023, 43(5): 15-19.
5	陈颖, 裴浩斐, 商佳棋, 等. 光伏耦合相变蓄热技术在低能耗建筑供暖系统中的应用[J]. 能源研究与管理, 2022, 14(3): 96-101.
	CHEN Ying, PEI Haofei, SHANG Jiaqi, et al. Application of photovoltaic coupled phase change heat storage technology in low energy consumption building heating system[J]. Energy Research and Management, 2022, 14(3): 96-101.
6	ZHANG Qunli, LIU Tao, CHENG Xuanrui, et al. Experimental research of photovoltaic-valley power hybrid heating system with phase change material thermal storage[J]. Journal of Building Engineering, 2024, 87: 108788.
7	刘芮, 王振兴, 张文静, 等. 储热材料研究现状及相变储热研究进展[J]. 电机与控制应用, 2024, 51(2): 44-60.
	LIU Rui, WANG Zhenxing, ZHANG Wenjing, et al. Current status of research on thermal storage materials and progress in phase change thermal storage research[J]. Electric Machines & Control Application, 2024, 51(2): 44-60.
8	SYAHBANA M Syukur L, KURNIAWAN Yoga, ISMAIL Ismail. Experimental study on the effect of different HTF discharges to increase efficiency of a latent heat storage system using a spiral coil heat exchanger with different fins[J]. International Journal of Thermophysics, 2024, 45(6): 76.
9	李国俭. 相变储能材料开发与封装技术研究进展[J]. 热力发电, 2023, 52(2): 23-31.
	LI Guojian. Research progress on development and packaging technology of phase change energy storage materials[J]. Thermal Power Generation, 2023, 52(2): 23-31.
10	SHEIKH Mohsin Iqbal Abdul Raheman, AHAMMED Md Ezaz, GUMTAPURE Veershetty. Thermal behavior of composite phase change material of polyethylene in a shell and coil-based thermal energy storage: Numerical analysis[J]. Journal of Energy Storage, 2023, 74: 109438.
11	毛前军, 曹燕. 非等距螺旋管壳式相变系统的蓄热性能研究[J]. 中南大学学报(自然科学版), 2022, 53(12): 4789-4798.
	MAO Qianjun, CAO Yan. Heat storage performance investigation of non-isometric spiral shell-and-tube phase change system[J]. Journal of Central South University (Science and Technology), 2022, 53(12): 4789-4798.
12	杨斯涵. 基于太阳能集热水箱耦合相变蓄热器的分户供暖系统[J]. 科技创新导报, 2015, 12(2): 85-88.
	YANG Sihan. Household heating system based on solar water tank coupled with phase change heat accumulator[J]. Science and Technology Innovation Herald, 2015, 12(2): 85-88.
13	郭鑫. 基于相变储能的太阳能热水系统设计与研究[D]. 泰安: 山东农业大学, 2023.
	GUO Xin. Design and research of solar water heating system based on phase change energy storage[D]. Taian: Shandong Agricultural University, 2023.
14	陈颖, 陶进, 曲娜, 等. 光伏+市电的相变蓄热地板在低能耗建筑供暖系统中的应用[J]. 电子技术, 2023, 52(3): 176-177.
	CHEN Ying, TAO Jin, QU Na, et al. Application of photovoltaic + mains phase change heat storage floor in heating system of low energy consumption building[J]. Electronic Technology, 2023, 52(3): 176-177.
15	尹少武, 李纤纤, 韩嘉维, 等. 分户式低谷电蓄热供暖系统的蓄放热特性[J]. 化工进展, 2024, 43(3): 1206-1213.
	YIN Shaowu, LI Xianxian, HAN Jiawei, et al. Heat charge and release characteristics of household off-peak electricity thermal storage heating system[J]. Chemical Industry and Engineering Progress, 2024, 43(3): 1206-1213.
16	杨宗帅. 基于相变材料蓄热的水冷型PV/T系统性能研究[D]. 郑州: 华北水利水电大学, 2023.
	YANG Zongshuai. A comprehensive performance study on an water-cooled PV/T system integrated with thermal energy storage[D]. Zhengzhou: North China University of Water Resources and Electric Power, 2023.
17	李婷. 固体蓄热装置储能体放热特性研究[D]. 天津: 天津商业大学, 2022.
	LI Ting. Study on heat release characteristics of energy storage body in solid heat storage device[D]. Tianjin: Tianjin University of Commerce, 2022.
18	张文娟. 二元复合相变材料蓄热器的数值模拟及优化研究[D]. 包头: 内蒙古科技大学, 2022.
	ZHANG Wenjuan. Numerical simulation and optimization of binary composite phase change material heat accumulator[D]. Baotou: Inner Mongolia University of Science & Technology, 2022.
19	吴涛, 刘向农, 杨磊, 等. 定形相变蓄热装置蓄放热数值分析及实验[J]. 合肥工业大学学报(自然科学版), 2021, 44(11): 1465-1469.
	WU Tao, LIU Xiangnong, YANG Lei, et al. Numerical analysis and experiment on heat storage and release of shaped phase change heat storage device[J]. Journal of Hefei University of Technology (Natural Science), 2021, 44(11): 1465-1469.
20	叶林柯, 雷波, 余涛. 热风地板蓄放热特性数值模拟研究[J]. 制冷与空调(四川), 2023, 37(3): 393-397, 433.
	YE Linke, LEI Bo, YU Tao. Numerical study on heat storage and release characteristics of warm air ventilated floor[J]. Refrigeration & Air Conditioning, 2023, 37(3): 393-397, 433.
21	叶治洲. 电热储存系统中多孔基复合储热体研究[D]. 北京: 华北电力大学, 2020.
	YE Zhizhou. Research on porous matrix composite phase change thermal storage body in electric thermal energy storage system[D]. Beijing: North China Electric Power University, 2020.

性能参数	镁铁蓄热砖	CPCM
价格区间/CNY·t^-1	4000~6500	2800~3800
平均体密度/g·cm^-3	2.95	2.16
平均比热容/kJ·kg^-1·K^-1	1.19	1.10
热导率/W·m^-1·K^-1	2.95	3.304
抗压强度/MPa	50	7.28
储热密度/kJ·kg^-1	957.95	1266.58

性能参数	镁铁蓄热砖	CPCM
价格区间/CNY·t^-1	4000~6500	2800~3800
平均体密度/g·cm^-3	2.95	2.16
平均比热容/kJ·kg^-1·K^-1	1.19	1.10
热导率/W·m^-1·K^-1	2.95	3.304
抗压强度/MPa	50	7.28
储热密度/kJ·kg^-1	957.95	1266.58

[1]	ZHANG Tianhao, LI Shuangxi, JIA Xiangji, HU Dingguo, CUI Ruizhuo, LI Shicong. Analysis of the effect of thermal deformation and friction wear of reinforced DLC film on the end face of high-speed mechanical seals [J]. Chemical Industry and Engineering Progress, 2024, 43(S1): 121-133.
[2]	MAO Ningxuan, WAN Xiaowei, JU Jie, HU Yanjie, JIANG Hao. Numerical simulation and structural optimization of flow field in industrial gas-solid fluidized beds based on CFD-PBM [J]. Chemical Industry and Engineering Progress, 2024, 43(S1): 13-20.
[3]	ZHANG Weiye, ZHU Xiaowu, LUO Yonghao, WANG Zhi. Numerical simulation of mixing performance of composite phyllotaxy microfluidic channel [J]. Chemical Industry and Engineering Progress, 2024, 43(S1): 154-165.
[4]	YANG Huimin, DU Jiali, QUAN Yawen, WU Shengxiao, JIN Jiao, WU Feng. CFD simulation investigation of heat transfer characteristics in a downer bed with side nozzle [J]. Chemical Industry and Engineering Progress, 2024, 43(S1): 32-42.
[5]	PAN Hanting, XU Hongtao, XU Duo, LUO Zhuqing. Analysis of thermal insulation characteristics of lithium-ion batteries based on phase change materials under low temperature [J]. Chemical Industry and Engineering Progress, 2024, 43(8): 4333-4341.
[6]	MA Yongli, LI Muyang, MA Zihao, WANG Haoran, WANG Maolong, FEI Yaohan, ZHANG Lubin, LIU Mingyan. Experiment of simulation study on gas-solid fluidization on Martian environments [J]. Chemical Industry and Engineering Progress, 2024, 43(8): 4203-4209.
[7]	JIANG Jingzhi, SHAO Guowei, CUI Haiting, LI Hongtao, YANG Qi. Analysis of enhanced heat transfer characteristics of finned triplex-tube phase change heat storage unit [J]. Chemical Industry and Engineering Progress, 2024, 43(8): 4210-4221.
[8]	WANG Qingtai, ZHANG Sai, WANG Jiemin. Numerical simulation for non-uniform compression of porous electrodes in vanadium flow batteries [J]. Chemical Industry and Engineering Progress, 2024, 43(6): 2940-2949.
[9]	HE Ruiqiang, FANG Min, ZHOU Jianduo, FEI Hua, YANG Kai. Research progress of TPE-based flexible composite phase change materials for thermal management of lithium batteries [J]. Chemical Industry and Engineering Progress, 2024, 43(6): 3159-3173.
[10]	LIANG Ximei, FEI Hua, LI Yuanlin, YONG Fan, GUO Mengqian, ZHOU Jiahong. Preparation and thermal properties of lauric acid-based binary low compatible energy storage materials [J]. Chemical Industry and Engineering Progress, 2024, 43(6): 3256-3267.
[11]	DU Yongliang, LIANG Zhuobin, GONG Yaoxu, BI Haojie, XU Zhiyuan, YUAN Hongying. Air gap membrane distillation research status and applications [J]. Chemical Industry and Engineering Progress, 2024, 43(4): 1655-1666.
[12]	SUN Chao, AI Shiqin, LIU Yuechan. Numerical simulation plate side flow heat transfer new plate-shell heat exchanger with considering physical property changes and shell heat transfer [J]. Chemical Industry and Engineering Progress, 2024, 43(4): 1676-1689.
[13]	ZHU Yanni, WANG Wei, SUN Yanchenhao, WEI Gang, ZHANG Dawei. Numerical simulation of centrifugal spray drying based on single-droplet evaporation [J]. Chemical Industry and Engineering Progress, 2024, 43(4): 1700-1710.
[14]	ZHAO Jilong, GUO Yuxiang, CHEN Hongxia, YUAN Dazhong, DU Xiaoze. Experimental and numerical simulation on heat transfer characteristics of vertical cesium heat pipes [J]. Chemical Industry and Engineering Progress, 2024, 43(4): 1711-1719.
[15]	SUN Xian, LIU Jun, WANG Xiaohui, SUN Changyu, CHEN Guangjin. Review of experimental and numerical simulation research on the development of natural gas hydrate reservoir with underlying gas [J]. Chemical Industry and Engineering Progress, 2024, 43(4): 2091-2103.