蓄热对超临界空气储能系统性能的影响  

Influence of Thermal Energy Storage on Performance of Supercritical Air Energy Storage System

作　　者：杨征[1] 陈海生[1] 王亮[1] 盛勇[1] 纪律[1] 

机构地区：[1]中国科学院工程热物理研究所,北京市100190

出　　处：《电力建设》2016年第8期33-37,共5页Electric Power Construction

基　　金：国家重点基础研究发展计划项目(973计划)(2015CB251302);国家自然科学基金优秀青年基金项目(51522605)~~

摘　　要：超临界空气储能系统是一种新型的储能系统,蓄热技术是提高系统效率的关键技术之一。该文建立了超临界空气储能系统在储能过程、存储过程和释能过程中的热力学模型,重点分析了蓄热对超临界系统性能的影响规律。分析结果表明,在储能过程中,储能效率随着蓄热水流量的上升而下降;在存储过程中,存储效率随存储时间的增加不断降低;在释能过程中,释能效率随蓄热水流量的上升呈现先上升后逐渐下降的趋势。系统效率随着蓄热水流量的增加先升高后降低,当蓄热水无量纲流量为0.75时,系统效率最高,为68.3%。Supercritical air energy storage system is a kind of new energy storage systems. Thermal energy storage is the key technology to improve the system efficiency. This paper establishes the thermodynamic model of supercritical air energy storage system in charge process,storage process and discharge process,and mainlyanalyzes the influence of thermal energy storage on the system performance. The analysis results show that,the charge efficiency decreases significantly with the increase of storage water flow in charge process; the storage efficiency decreases with the growth of the storage time in storage process; and the discharge efficiency firstincreasesand then decreases with the increase of the storage water flow. The system efficiencyin the global process first increases and then decreases with the increases of storage water flow,with the highest estimated value of 68. 3% at the dimensionless storage water flow of 0. 75.

关 键 词：蓄热 超临界空气储能系统 储能效率 热力学模型 

分 类 号：TM919[电气工程—电力电子与电力传动]