Optimization of an encapsulated phase change material thermal energy storage system

被引：50
|
作者：
Nithyanandam, K. [1 ]
Pitchumani, R. [1 ]
机构：
[1] Virginia Tech, Dept Mech Engn, Adv Mat & Technol Lab, Blacksburg, VA 24061 USA
来源：
SOLAR ENERGY | 2014年 / 107卷
关键词：
Thermal energy storage; Encapsulated phase change materials; Concentrating solar power; Design window; Optimization; HEAT-TRANSFER; PCM CAPSULES; PACKED-BED; TEMPERATURE; ENHANCEMENT; THERMOCLINES;
D O I：
10.1016/j.solener.2014.06.011
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Thermal energy storage enables uninterrupted operation of a concentrating solar power (CSP) plant during periods of cloudy or intermittent solar availability. This paper presents a transient computational analysis of an encapsulated phase change material (EPCM) thermal energy storage (TES) system for repeated charging and discharging cycles to investigate its dynamic response. The influence of the design and operating parameters on the dynamic charge and discharge performance of the system is analyzed to identify operating windows that satisfy technoeconomic targets of storage cost less than $15/kW h(t), round-trip exergetic efficiency greater than 95%, charge time less than 6 h and a minimum discharge period of 6 h. Overall, this study illustrates a methodology for design and optimization of encapsulated PCM thermal energy storage system (EPCM-TES) for a CSP plant operation. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：770 / 788
页数：19
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