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Cyclic characteristics of water thermocline storage tank with encapsulated PCM packed bed
He, Zhaoyu1; Wang, Xiaohui1; Du, Xiaoze1,2; Xu, Chao1; Yang, Lijun1
2019-08
发表期刊INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN0017-9310
卷号139页码:1077-1086
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.
关键词Thermal energy storage (TES) Thermocline Phase change material (PCM) Packed bed Cyclic characteristic
DOI10.1016/j.ijheatmasstransfer.2019.05.093
收录类别SCI ; SCIE
语种英语
资助项目National 973 Program of China[2015CB251503]
WOS研究方向Thermodynamics ; Engineering ; Mechanics
WOS类目Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:000473381300093
出版者PERGAMON-ELSEVIER SCIENCE LTD
EI入藏号20192307001536
EI主题词Phase change materials
EI分类号407.2 Waterways - 614 Steam Power Plants - 641.1 Thermodynamics - 641.2 Heat Transfer - 694.4 Storage - 802.1 Chemical Plants and Equipment
引用统计
被引频次:28[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/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
通讯作者单位能源与动力工程学院
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.
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