Cyclic characteristics of water thermocline storage tank with encapsulated PCM packed bed

doi:10.1016/j.ijheatmasstransfer.2019.05.093

CORC > 兰州理工大学 > 兰州理工大学

	Cyclic characteristics of water thermocline storage tank with encapsulated PCM packed bed
	He, Zhaoyu 1; Wang, Xiaohui 1; Du, Xiaoze 1,2; Xu, Chao 1; Yang, Lijun 1
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2019-08
卷号	139 页码:1077-1086
关键词	Thermal energy storage (TES) Thermocline Phase change material (PCM) Packed bed Cyclic characteristic
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2019.05.093
英文摘要	Thermal energy storage (TES) with phase change materials is a promising approach for combined heat and power plants to enhance the electricity peak regulation capability and maintain stable heat-supply at the same time. Its cyclic performance is important under practical working conditions, however was rarely investigated. An experimental study on the thermocline TES was presented employing encapsulated paraffin wax packed bed as heat storage media and water as heat transfer fluid (HTF). The cyclic characteristics were revealed experimentally with consecutive charging/discharging processes. Convergence behavior was observed during the cyclic operation. It was found that the end-of-charging/discharging temperature distribution, charging/discharging duration and utilization rate of each cycle tend to be stable as the cycle number increases. It is believed that such behavior stems from the difference between the initial status and the end-of-charging/discharging criteria. The influences of flow rate of HTF, working temperature and initial status on the operational performance were investigated. The results indicated that the initial status had no significant impact on the TES performance after the convergence reached. Larger flow rate of HTF resulted in lower utilization rate and longer duration of each cycle. Especially the cyclic operation performance was strongly depended on the completeness of charging/discharging. These results may be helpful to understand such promising thermal energy storage technology, as well as the design and improvement of its auxiliary system. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National 973 Program of China[2015CB251503]
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000473381300093
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31670]
专题	兰州理工大学能源与动力工程学院
通讯作者	Du, Xiaoze
作者单位	1.North China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China 2.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	He, Zhaoyu,Wang, Xiaohui,Du, Xiaoze,et al. Cyclic characteristics of water thermocline storage tank with encapsulated PCM packed bed[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2019,139:1077-1086.
APA	He, Zhaoyu,Wang, Xiaohui,Du, Xiaoze,Xu, Chao,&Yang, Lijun.(2019).Cyclic characteristics of water thermocline storage tank with encapsulated PCM packed bed.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,139,1077-1086.
MLA	He, Zhaoyu,et al."Cyclic characteristics of water thermocline storage tank with encapsulated PCM packed bed".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 139(2019):1077-1086.