摘要
本文提出了一种采用混合工质制冷的液化空气储能循环,构建了完整的液化空气储能热力系统循环流程以及热力计算分析模型。原料气由单级压缩机驱动的混合制冷机液化,采用丙烷进行预冷,利用遗传算法进行组分优化,开展了设计工况下系统热力学研究。典型工况下,系统的电-电转化效率ηC为43.89%,液化比功耗SPC为0.2306 k Wh·L^(-1),系统品质因数FOM为74.64%。研究发现随原料进气压力的增大,ηC和FOM均增大,SPC逐渐减小。与基于Claude液化流程的储能系统进行对比,结果表明本文提出的系统循环性能较优,可为实际工程应用提供参考和依据。
In this paper,a liquid air energy storage(LAES)cycle using mixed-refrigerant Joule-Thomson(MRJT)refrigeration technology is proposed.A complete LAES thermal system and a calculation model are constructed.The feed gas is liquefied by a single-stage compressor-driven mixed-refrigerant refrigerator pre-cooled by propane.Component optimization was performed using genetic algorithm(GA),and a thermodynamic study of the system under the different operating conditions was carried out.For typical operating conditions,the electrical efficiency(ηC)of the system is 43.89%,the specific power consumption(SPC)reaches 0.2306 kWh·L^(-1),and the system figure of merit(FOM)achieves 74.64%.TheηC and FOM both increase with the entrance air pressure,while the SPC varies inversely.Compared with the LAES system based on Claude cycle,the system configuration proposed in this paper is superior in cycle performance.The results provided a practical reference for engineering applications.
作者
孙彧炜
王昊成
郭浩
董学强
公茂琼
SUN Yuwei;WANG Haocheng;GUO Hao;DONG Xueqiang;GONG Maoqiong(Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《工程热物理学报》
EI
CSCD
北大核心
2023年第11期3032-3038,共7页
Journal of Engineering Thermophysics
基金
国家自然科学基金重点项目(No.52036010)
中国科学院海洋大科学研究中心重点部署项目(No.COMS2020Q1302)。
关键词
液化空气储能
混合工质
组分优化
分析
liquid air energy storage
mixed refrigerant
component optimization
exergy efficiency
