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	The effect of the physical boundary conditions on the thermal performance of molten salt thermocline tank
	Chang, Zheshao1,2; Li, Xin1; Xu, Chao3; Chang, Chun1; Wang, Zhifeng1; Zhang, Qiangqiang1; Liao, Zhirong1; Li, Qing1
刊名	Renewable energy
	2016-10-01
卷号	96页码:190-202
关键词	Thermocline Molten salt Insert liner Truncated cone shaped tank Thermal performance Entropy generation
ISSN号	0960-1481
DOI	10.1016/j.renene.2016.04.043
通讯作者	Li, xin(drlixin@mail.iee.ac.cn)
英文摘要	Methods of solving some of the critical design consideration associated with the thermocline storage system with unusual physical boundary conditions bring new problems: the effect of insert liner should not be ignored with small solid filler size, and it is hard to take advantage of truncated cone shaped tank for decreasing the potential of thermal ratcheting and increasing the maximum height of the tank, both while maintaining a good efficiency. in this study, a transient two-dimensional and two-temperature model is developed to investigate the heat transfer and fluid dynamics in a molten salt thermocline thermal storage system. after model validation, the effects of physical boundary conditions including insert liner and sloped wall on the thermal performance of thermocline storage system is investigated through the entropy generation analysis. the results show that both of the axial and radial convex size of the liner should be as small as possible, resulting in smaller average velocity and less disturbance in the flow. the truncated cone shaped tank has an advantage in the charging process with low entropy generation in molten salt and solid material, while it goes against the discharging process. it is found that larger inclined angle of the sloped wall causes smaller thermocline thickness and entropy generation with the same tank height and tank volume for truncated cone shaped tanks. besides, larger tank height is better for the truncated cone shaped tanks with the same tank volume. (c) 2016 elsevier ltd. all rights reserved.
WOS关键词	CONCENTRATED SOLAR POWER ; ENERGY-STORAGE ; PLANTS ; SYSTEM ; SIMULATION ; DESIGN ; MODEL ; HEAT ; OPERATION
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000379271800017
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374668
专题	中国科学院大学
通讯作者	Li, Xin
作者单位	1.Chinese Acad Sci, Inst Elect Engn, Key Lab Solar Thermal Energy & Photovolta Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.North China Elect Power Univ, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chang, Zheshao,Li, Xin,Xu, Chao,et al. The effect of the physical boundary conditions on the thermal performance of molten salt thermocline tank[J]. Renewable energy,2016,96:190-202.
APA	Chang, Zheshao.,Li, Xin.,Xu, Chao.,Chang, Chun.,Wang, Zhifeng.,...&Li, Qing.(2016).The effect of the physical boundary conditions on the thermal performance of molten salt thermocline tank.Renewable energy,96,190-202.
MLA	Chang, Zheshao,et al."The effect of the physical boundary conditions on the thermal performance of molten salt thermocline tank".Renewable energy 96(2016):190-202.

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