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Title: Thermodynamic characteristics of a novel supercritical compressed air energy storage system
Author: Guo, Huan1, 2; Xu, Yujie1; Chen, Haisheng1; Zhou, Xuezhi1
Source: ENERGY CONVERSION AND MANAGEMENT
Issued Date: 2016-05-01
Volume: 115, Pages:167-177
Keyword: Supercritical compressed air energy storage (SC-CAES) ; System efficiency ; Energy density ; Exergy analysis ; Sensitivity analysis
DOI: 10.1016/j.enconman.2016.01.051
DOC Type: Article
English Abstract: A novel supercritical compressed air energy storage (SC-CAES) system is proposed by our team to solve the problems of conventional CAES. The system eliminates the dependence on fossil fuel and large gas storage cavern, as well as possesses the advantages of high efficiency by employing the special properties of supercritical air, which is significant for the development of electrical energy storage. The thermodynamic model of the SC-CAES system is built, and the thermodynamic characters are revealed. Through the exergy analysis of the system, the processes of the larger exergy destruction include compression, expansion, cold storage/heat exchange and throttle. Furthermore, sensitivity analysis shows that there is an optimal energy releasing pressure to make the system achieve the highest efficiency when energy storage pressure is constant. The efficiency of SC-CAES is expected to reach about 67.41% when energy storage pressure and energy releasing pressure are 120 bar and 95.01 bar, respectively. At the same time, the energy density is 18 times larger than that of conventional CAES. Sensitivity analysis also shows the change laws of system efficiency varying with other basic system parameters. The study provides support for the design and engineering of SC-CAES. (C) 2016 Elsevier Ltd. All rights reserved.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Thermodynamics ; Energy & Fuels ; Mechanics ; Physics, Nuclear
WOS Subject Extended: Thermodynamics ; Energy & Fuels ; Mechanics ; Physics
WOS Keyword Plus: ADIABATIC CAES ; ASPEN PLUS ; PACKED-BED ; PLANT ; OPTIMIZATION ; PERFORMANCE ; HEAT ; TEMPERATURE ; SIMULATION ; DESIGN
Indexed Type: SCI
Funder: National Natural Science Foundation of China(51522605) ; National High-Tech Research and Development Program of China(2013AA050801)
Language: 英语
WOS ID: WOS:000373866600016
Citation statistics:
Content Type: 期刊论文
URI: http://ir.etp.ac.cn/handle/311046/112499
Appears in Collections:中国科学院工程热物理所(论文库)_期刊论文(SCI)

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description.institution: 1.Chinese Acad Sci, Inst Engn Thermophys, 11 North Fourth Ring Rd West, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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