Experimental study on phase-change discharging characteristics of modified barium hydroxide octahydrate

doi:10.3969/j.issn.1674-1951.2021.07.008

Abstract

Abstract:

Thermal storage technology can effectively solve the difficulty of renewable energy's grid connection. In order to obtain the phase-change heat transfer characteristics of modified barium hydroxide octahydrate in double pipes, our team prepared modified barium hydroxide octahydrate and studied its phase-change discharging characteristics in double pipes through experiments. The effects of cooling water temperature at inlet and flow rate on the phase transformation process and heat transfer performance of modified barium hydroxide octahydrate were studied. The results show that increasing the inlet flow rate of cold fluid can shorten the phase-change heat-discharge time of modified barium hydroxide octahydrate, but excessive inlet flow rate would reduce the heat transfer power; increasing the cooling water temperature at inlet has little effect on the phase-change discharging time, but it would reduce the heat transfer power as well. In the range of the experiment, the optimum inlet flow rate is 80 L/h and the maximum average heat transfer power is 251 W.

Key words: renewable energy, thermal storage, phase change material, phase-change heat transfer, barium hydroxide octahydrate, shell-and-tube heat exchanger

CLC Number:

TK124

DOU Peng, YU Qiang, FAN Zhansheng, ZHI Ruiping, LU Yuanwei, WU Yuting, YANG Guichun. Experimental study on phase-change discharging characteristics of modified barium hydroxide octahydrate[J]. Huadian Technology, 2021, 43(7): 47-53.

Figures/Tables 12

Fig.1

Fig.2

Tab.1

Tab.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

References 14

[1]	彭达文. 蓄热罐内熔融盐相变蓄放热规律及其热管传热强化研究[D]. 北京:北京工业大学, 2019.
[2]	韩伟, 崔凯平, 赵晓辉, 等. 光热电站储热系统设计及储罐预热方案研究[J]. 华电技术, 2020, 42(4):42-46.
	HAN Wei, CUI Kaiping, ZHAO Xiaohui, et al. Design for CSP plants' energy storage system and research on preheating strategy with tanks[J]. Huadian Technology, 2020, 42(4):42-46.
[3]	钟声远, 赵军, 李浩, 等. 基于城市功能区划分的分布式相变蓄热站热经济性分析[J]. 华电技术, 2020, 42(4):23-30.
	ZHONG Shengyuan, ZHAO Jun, LI Hao, et al. Thermal economy analysis of distributed phase change heat storage stations based on urban functional zoning[J]. Huadian Technology, 2020, 42(4):23-30.
[4]	LI Z, WU Z. Analysis of HTFs, PCMs and fins effects on the thermal performance of shell-tube thermal energy storage units[J]. Solar Energy, 2015, 122:382-395. doi: 10.1016/j.solener.2015.09.019
[5]	WANG P, YAO H, LAN Z, et al. Numerical investigation of PCM melting process in sleeve tube with internal fins[J]. Energy Conversion & Management, 2016, 110(2):428-435.
[6]	OGOH W, GROULX D. Effects of the heat transfer fluid velocity on the storage characteristics of a cylindrical latent heat energy storage system: A numerical study[J]. Heat & Mass Transfer, 2012, 48(3):439-449.
[7]	SEDDEGH S, WANG X, HENDERSON A D. A comparative study of thermal behaviour of a horizontal and vertical shell-and-tube energy storage using phase change materials[J]. Applied Thermal Engineering, 2016, 93:348-358. doi: 10.1016/j.applthermaleng.2015.09.107
[8]	MA Z, YANG W W, YUAN F, et al. Investigation on the thermal performance of a high-temperature latent heat storage system[J]. Applied Thermal Engineering, 2017, 122:579-592. doi: 10.1016/j.applthermaleng.2017.04.085
[9]	RATHOD M K, BANERJEE J. Thermal performance enhancement of shell and tube Latent Heat Storage Unit using longitudinal fins[J]. Applied Thermal Engineering, 2015, 75:1084-1092. doi: 10.1016/j.applthermaleng.2014.10.074
[10]	王艺斐. 串联式多相变储热实验与数值模拟研究[D]. 北京:中国科学院研究生院(工程热物理研究所), 2016.
[11]	HOSSEINI M J, RAHIMI M, BAHRAMPOURY R. Experimental and computational evolution of a shell and tube heat exchanger as a PCM thermal storage system[J]. International Communications in Heat and Mass Transfer, 2013, 50:128-136. doi: 10.1016/j.icheatmasstransfer.2013.11.008
[12]	TELKES. M. Thermal energy storage in salt hydrates[J]. Solar Energy Materials, 1980, 2(4):381-393. doi: 10.1016/0165-1633(80)90033-7
[13]	SCHRÖDER J, GAWRON K. et al. Latent heat storage[J]. International Journal of Energy Research, 1981, 5(2):103-109. doi: 10.1002/(ISSN)1099-114X
[14]	TELKES M. Thermal storage in salt-hydrates[J]. Solar Materials Science, 1980, 1:377-404.

项目	工况
项目	1	2	3	4	5
冷却水进口温度/℃	20	20	20	25	30
冷却水进口流量/（L·h^-1）	40	80	120	120	120

项目	参数
相变温度/℃	78.8
相变潜热/（J·g^-1）	269.2
比热容/[J·(g·K)^-1]	1.422 91-0.013 96 t+3.380 00×10^-4 t², 30 ℃≤t≤72 ℃
热导率/[W·(m·K)^-1]	1.13

[1]	GAO Ming, CHEN Jiahao, WANG Lixiao, TANG Wuchen, WANG Zhidong, ZHANG Zifan, MA Haixia, FENG Ruijue, ZHOU Changpeng. A three-point probabilistic load flow estimation algorithm for the power system considering photovoltaic uncertainties [J]. Integrated Intelligent Energy, 2022, 44(9): 1-10.
[2]	ZHONG Pengyuan, YANG Xiaohong, KOU Jianyu. Research on the optimal configuration of integrated energy systems for parks with hydrogen storage devices [J]. Integrated Intelligent Energy, 2022, 44(9): 11-19.
[3]	HAN Shiwang, ZHAO Ying, ZHANG Xingyu, XUAN Chengbo, ZHAO Tiantian, HOU Xukai, LIU Qianqian. Researches on hydrogen storage peak-shaving technology for new power systems to achieve carbon neutrality [J]. Integrated Intelligent Energy, 2022, 44(9): 20-26.
[4]	HAN Qianwen, ZHANG Kun, CHEN Xiaoyang, ZHU Tenglong. Study on La/Ni co-doped SrTi_0.35Fe_0.65O_3-_δ symmetric electrode for H₂O/CO₂ co-electrolysis in SOECs [J]. Integrated Intelligent Energy, 2022, 44(8): 43-47.
[5]	LI Hua, ZHENG Hongwei, ZHOU Bowen, LI Guangdi, YANG Bo. Two-part tariff for pumped storage power plants in an integrated intelligent energy system [J]. Integrated Intelligent Energy, 2022, 44(7): 10-18.
[6]	WANG Sheng, TAN Jian, SHI Wenbo, ZOU Fenghua, CHEN Guang, WANG Linyu, HUI Hongxun, GUO Lei. Practices of the new power system in the UK and inspiration for the development of provincial power systems in China [J]. Integrated Intelligent Energy, 2022, 44(7): 19-32.
[7]	YE Zhaonian, ZHAO Changlu, WANG Yongzhen, HAN Kai, LIU Chaofan, HAN Juntao. Dual-objective optimization of energy networks with shared energy storage based on Nash bargaining [J]. Integrated Intelligent Energy, 2022, 44(7): 40-48.
[8]	ZHANG Rongquan, LI Gangqiang, BU Siqi, LIU Fang, ZHU Yuxiang. Economic operation of a multi-energy system based on adaptive learning rate firefly algorithm [J]. Integrated Intelligent Energy, 2022, 44(7): 49-57.
[9]	GUO Zuogang, YUAN Zhiyong, XU Min, LEI Jinyong, LI Pengyue, TAN Yingjie. Multi-energy flow calculation method for multi-energy complementary integrated energy systems [J]. Integrated Intelligent Energy, 2022, 44(7): 58-65.
[10]	BAI Jiahao, FU Xueqian. Review on electric energy substitution of agricultural energy internet in the context of carbon neutrality [J]. Integrated Intelligent Energy, 2022, 44(6): 1-11.
[11]	CHEN Yong, SU Junhua, WANG Yang. Feasibility analysis on methane production by CO2 hydrogenation in China [J]. Integrated Intelligent Energy, 2022, 44(6): 86-90.
[12]	Yimin ZHANG, Jianli KANG, Naiqin ZHAO. Development and perspectives of the transition metal-based catalysts for water splitting [J]. Integrated Intelligent Energy, 2022, 44(5): 15-29.
[13]	Chang YAN, Sheng HUANG, Yinpeng QU. Review on hydrogen production technology from offshore wind power to achieve carbon neutrality [J]. Integrated Intelligent Energy, 2022, 44(5): 30-40.
[14]	Feng WANG, Peng LU, Qingtao ZHANG, Hui ZHAO, Huaiming WANG, Yangyang RU. Development trend and prospects of hydrogen production from offshore wind power [J]. Integrated Intelligent Energy, 2022, 44(5): 41-48.
[15]	Fang YAO, Xiaona YANG, Leijiao GE, Shuai ZHENG. Optimization of capacity allocation scheme for wind-solar-hydrogen energy system [J]. Integrated Intelligent Energy, 2022, 44(5): 56-63.