跨临界二氧化碳储能系统研究  

Research on Transcritical Carbon Dioxide Energy Storage System

作　　者：李玉平 徐玉杰[2] 李斌[1] 郭欢[2] 郭丛[2] 陈海生[2] LI Yuping;XU Yujie;LI Bin;GUO Huan;GUO Cong;CHEN Haisheng(North China Electric Power University,Baoding 071003,Hebei Province,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Haidian District,Beijing 100190,China)

机构地区：[1]华北电力大学,河北省 保定市 071003 [2]中国科学院工程热物理研究所,北京市 海淀区 100190

出　　处：《中国电机工程学报》2018年第21期6367-6374,共8页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973计划)(2015CB 251301);优秀青年科学基金项目(51522605)

摘　　要：面向电力系统对储能技术的迫切需求,以及针对压缩空气储能系统存在的技术与应用瓶颈问题,提出一种跨临界二氧化碳储能系统。系统利用二氧化碳超临界压力低且易液化特点,解决液化空气储能难于液化及低温储存的难题;进一步揭示系统性能随关键参数的变化规律,开展系统热力性能优化,获得系统最优效率,为49.15%;同时对系统及关键过程进行？分析,找出系统？损大的环节及内部原因。跨临界二氧化碳储能系统具有绿色、不受地理条件限制、储能密度较大等优点,具有较好的应用前景。This paper presentsed a transcritical carbon dioxide energy storage system in order to address the urgent need of energy system in electric system and the bottleneck of compressed air energy system in terms of technology and application. The system uses carbon dioxide, which has low supercritical pressure and is easy to liquefy, to overcome the difficulty of liquefaction and low temperature storage in liquefied air storage. The results show that the system performance is optimized with the key parameters, and the optimal system efficiency is 49.15%. Meanwhile, exergy analysis is conducted based on the system and key process to identify the part with large exergy loss. The transcritical carbon dioxide energy storage system with good application prospect has the advantages of green, independent of geographical conditions, large energy storage density and so on.

关 键 词：储能 跨临界二氧化碳 系统优化 ?分析 

分 类 号：TK123[动力工程及工程热物理—工程热物理]