高校化学工程学报2026，Vol.40Issue(2)：271-285,15.DOI:10.3969/j.issn.1003-9015.2025.00.011
耦合液化空气储能的LNG冷能集成发电系统性能分析及优化
Performance analysis and optimization of LNG cold energy integrated power generation system coupled with liquefied air energy storage
摘要
Abstract
To increase the utilization efficiency of liquefied natural gas(LNG)cold energy and address the issues that the low round trip efficiency,power generation,utility value of conventional liquefied air energy storage(LAES)system and the continuous operation of LNG regasification process is inconsistent with the peak operation of the energy storage process,the LNG cold energy integrated power generation system coupled with liquefied air energy storage was built.Moreover,the thermodynamic performance and economic feasibility of the system were evaluated.The results showed that using Ethane and Propane as working fluids for reheat organic Rankine cycle(RORC)could significantly improve system performanc.The liquid air pump outlet pressure,liquid air storage pressure,the working fluids gasification pressure of the RORC,LNG outlet temperature of the RORC1 condenser,and the liquefied air flow rate had a significant effect on the system performance.The single objective and multi-objective optimization for the system performance were carried out based on the genetic algorithm(GA)and non-dominated sorting genetic algorithm(NSGA-Ⅱ),and the multi-objective optimization results were determined.The comprehensive performance of the optimized system was better than that of the system studied in recent years.The net present value(NPV)analysis method proved that the system had certain economic feasibility with the NPV reaching 13.77×106 USD,and the initial investment cost of the system could be recovered in 12.55 years.The research findings provide a reference basis for modeling design and efficient operation of the LAES integrated power generation system driven by LNG cold energy.关键词
LNG冷能/液化空气储能/回热式有机朗肯循环/经济性分析/遗传算法Key words
LNG cold energy/liquefied air energy storage/reheat organic Rankine cycle/economic analysis/genetic algorithm分类
通用工业技术引用本文复制引用
潘杰,唐斐然,李晚君,胡欣,李冉..耦合液化空气储能的LNG冷能集成发电系统性能分析及优化[J].高校化学工程学报,2026,40(2):271-285,15.基金项目
国家自然科学基金(52274064) （52274064）
国家自然科学基金(51774237). （51774237）
