钢铁企业余热强化的压缩空气储能系统性能研究  

Performance of a compressed air energy storage system enhanced by using waste heat of steelworks

作　　者：赖茜 梁伟 王世彪 孙文强 Lai Xi;Liang Wei;Wang Shibiao;Sun Wenqiang(Northeastern University;State Environmental Protection Key Laboratory of Eco-industry)

机构地区：[1]东北大学冶金学院热能工程系,辽宁省沈阳市110819 [2]国家环境保护生态工业重点实验室

出　　处：《冶金能源》2021年第2期23-28,共6页Energy For Metallurgical Industry

基　　金：国家级大学生创新创业训练计划资助项目(202010145041);中央高校基本科研业务费专项资金资助项目(N182410001,N2025022);国家自然科学基金项目(51734004)。

摘　　要：为了解决传统压缩空气储能(CAES)系统依赖化石燃料以及先进绝热压缩空气储能(AA-CAES)系统的透平初温较低的问题,研究设计了余热强化的压缩空气储能(WH-CAES)系统。通过建立该系统各环节热力学模型,研究了WH-CAES系统能量效率和储能效率随压缩比比值和膨胀比变化的规律,并与AA-CAES系统进行了对比分析。研究表明:WH-CAES系统可有效提高系统性能。随着压缩比的增大,WH-CAES系统的系统能量效率降低,储能效率升高。随着膨胀比的增大,系统能量效率和储能效率先增大后减小。在膨胀比比值等于0.334时,系统能量效率和储能效率达到最大,分别为57.72%和77.60%。In order to eliminate the fossil fuel consumption of traditional compressed air energy storage(CAES)systems and enhance the turbine inlet temperature of advanced adiabatic CAES(AA-CAES)systems,a waste heat enhanced CAES(WH-CAES)system was designed in this work.Thermodynamic models of the system were established to investigate the system energy efficiency and energy storage efficiency with the ratio of compression ratios and the ratio of expansion ratios and compare with an AA-CAES system.Results show that WH-CAES system can effectively improve the system performances.As the ratio of compression ratios increases,the system energy efficiency of the WH-CAES system decreases and the energy storage efficiency increases.As the ratio of expansion ratios increases,the system energy efficiency and energy storage efficiency increase first and then decrease.The system energy efficiency and energy storage efficiency reach the maximum of 57.72%and 77.60%,respectively,when the ratio of expansion ratios is equal to 0.334.

关 键 词：压缩空气储能 余热 系统能量效率 储能效率 

分 类 号：TF31[冶金工程—冶金机械及自动化] TK02[动力工程及工程热物理]