摘要
为了提高液态空气储能系统(B-LAES)的循环效率及压缩热的利用率,将液态天然气的冷能合理利用起来,提出了一种耦合液态天然气(LNG)和有机朗肯循环(ORC)实现冷热电三联供的液态空气储能系统,从导热油中压缩热的利用率、循环效率、电-电转化效率、?效率几方面对本系统进行分析。研究结果表明,通过合理综合利用导热油中的压缩热,压缩热利用率可达到96.67%,比B-LAES系统高约55%;通过耦合利用液态天然气(LNG)的冷能,系统循环效率可达93.20%,比B-LAES系统提高约16.9%;增加ORC系统可使系统电-电转化效率达81.34%,比B-LAES系统提高约42.2%。研究结果可为液态空气储能理论研究和应用提供一定的技术参考。
In order to increase circulation efficiency and utilization rate of the compressed heat of the liquid air energy storage(B-LAES) system and make wise use of the cold energy of the liquid natural gas, this study suggests a LAES system that can achieve the combined cooling, heating, and power supply by coupling the liquid natural gas and the organic Rankine cycle system. The system is examined from the utilization rate of the compressed heat in the heat transfer oil, the circulation efficiency, the electricity recurrence conversion efficiency, and the exergy efficiency. Through the thoughtful and thorough use of compression heat in the heat transfer oil, the utilization rate of the compression heat is as high as 96.67%, which is almost 55% greater than that of the B-LAES system. Using the cold energy of liquid natural gas through coupling, the circulation efficiency of the system can reach 93.20%, which is roughly 16.9% greater than that of the B-LAES system. Using the organic Rankine cycle system,the electrical conversion efficiency of the system can reach 81.34%, which is almost 42.2%greater than that of the B-LAES system.
作者
肖力木
高欣
张世海
文贤馗
XIAO Limu;GAO Xin;ZHANG Shihai;WEN Xiankui(The Electrical Engineering College,Guizhou University,Guiyang 550025,Guizhou,China;College of physics,Guizhou University,Guiyang 550025,Guizhou,China;Guizhou Chuangxing Electric Power Research Institute Co.,Ltd.,Guiyang 550081,Guizhou,China;Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,Guizhou,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2023年第1期155-164,共10页
Energy Storage Science and Technology
基金
国家重点研发计划项目(2017YFB0903604)
贵州省科技厅科技支撑计划资助项目(黔科合支撑[2020]2Y064)
国家自然科学基金项目(11965007)。
关键词
液态空气储能
有机朗肯循环
冷热电联供
循环效率
压缩热利用率
liquefied air energy storage
organic Rankine cycle
supplies of cooling
heating and electrical powers
cycle efficiency
compression heat utilization