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题名:
Thermal performance and cost analysis of a multi-layered solid-PCM thermocline thermal energy storage for CSP tower plants
作者: Zhao, BC; Cheng, MS; Liu, C; Dai, ZM
刊名: APPLIED ENERGY
出版日期: 2016
卷号: 178, 页码:784-799
关键词: Concentrating solar power ; Thermal energy storage ; Encapsulated phase change material ; Multi-layered solid-PCM thermocline ; Packed-bed configuration ; Cost optimization
DOI: 10.1016/j.apenergy.2016.06.034
通讯作者: Cheng, MS ; Dai, ZM (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
文章类型: 期刊论文
英文摘要: Thermocline storage in packed-bed is taken into consideration for cost reduction of thermal energy storage (TES) system in concentrating solar power (CSP). With a novel packed-bed configuration proposed recently, multi-layered solid-PCM (MLSPCM) thermocline TES is regarded as a more cost-effective alternative for current TES due to its lower thermocline degradation, which results in a higher energy utilization during the cyclic operation of the system comparing to other thermocline TES patterns. Thermal performance of several MLSPCM thermocline TES system with specific packed-bed configurations have been numerically evaluated both on pilot and practical scale. In this work, transient thermal behaviors of charging and discharging process in a cyclic operating state of a practical scale MLSPCM thermocline TES is investigated using a modified one-dimensional dispersion-concentric (D-C) model, while a comprehensive cost model is adopted to estimate capital cost of TES system. The influence of packed-bed configuration on several evaluation indexes of system performance such as cyclic operating time duration, total capacity factor and capital cost per kW ht are explored based on parametric studies. Optimum design configurations are identified to minimize capital cost per kW ht on the specific operating requirements. A cost comparison among different thermocline TES patterns as well as the two-tank TES are presented. The results show that the MLSPCM thermocline TES with an optimum packed-bed configuration is more cost-competitive than the two tank TES and any other thermocline TES systems. Overall, this study illustrates a methodology for packed-bed configuration optimization of a practical-scale MLSPCM thermocline TES and provide a design reference on cost-effective TES system for current CSP tower plants. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000382340700063
ISSN号: 0306-2619
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26662
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Zhao, BC,Cheng, MS,Liu, C,et al. Thermal performance and cost analysis of a multi-layered solid-PCM thermocline thermal energy storage for CSP tower plants[J]. APPLIED ENERGY,2016-01-01,178:784-799.
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