与电解水制氢和固体氧化物燃料电池耦合集成的新型压缩空气储能系统性能分析  

Analysis on performance of a novel compressed air energy storage system coupled with electrolytic water hydrogen production and solid oxide fuel cell

作　　者：张利 段福凯 李彪 贾开华 樊宽鹏 姜艳 于云霞 ZHANG Li;DUAN Fu-kai;LI Biao;JIA Kai-hua;FAN Kuan-peng;JIANG Yan;YU Yun-xia(Linyi Power Supply Company,State Grid Shandong Electric Power Company,Linyi 276000,China)

机构地区：[1]国网山东省电力公司临沂供电公司,山东临沂276000

出　　处：《现代化工》2023年第12期213-220,共8页Modern Chemical Industry

基　　金：国家自然科学基金青年项目(52106008);国网山东省电力公司科技项目(520607220002)。

摘　　要：为提高压缩空气储能系统的效率,提出了一种新型耦合系统:将压缩空气储能系统与电解水制氢系统和氢能固体燃料电池系统进行系统集成。在充电过程中,电解水制氢系统和压缩空气储能系统分别将电能存储。在放电过程中,采用氢能固体燃料电池和压缩空气储能系统进行发电。采用压缩空气储能系统排出的空气余热以及剩余的压缩热加热氢能固体燃料电池系统的给水,从而增加系统电能输出。通过以上系统集成,实现了能量梯级利用,有效提高了压缩空气储能系统的效率;同时与氢能系统集成,实现了整个过程碳零排放。对耦合系统进行了热力学分析和经济性分析,结果表明,压缩空气储能系统的往返效率、储能密度和效率可达70.05%、12.01 MJ/m^(3)和66.39%;同时,耦合系统的整体效率可提高1.19%。压缩空气储能系统的动态投资回收期为3.36 a,净现值可以达到1458.01万元,具有较好的经济收益。To improve the efficiency of the compressed air energy storage(CAES)system,a new coupling system is proposed,in which CAES system is integrated with the electrolytic water hydrogen production system and the hydrogen-driven solid fuel cell system.During the charging process,the electrolytic water hydrogen production system and CAES system separately store electrical energy.During the discharging process,the hydrogen-driven solid fuel cell system and CAES system are used to generate electricity.In addition,both the spare heat in the air discharged from CAES system and the remaining compression heat are used to heat the feedwater for the hydrogen-driven solid fuel cell system,thus increasing the electrical energy output from the system.Through such system integration,the ladder utilization of energy is realized and the efficiency of CAES system is effectively improved.Meanwhile,the integration of the hydrogen energy system achieves zero carbon emission in the whole process.It is indicated through analyzing the thermodynamic property and economy of the coupled system that the round-trip efficiency,energy storage density and exergy efficiency of the CAES system can reach 70.05%,12.01 MJ·m^(-3) and 66.39%,respectively.Meanwhile,the overall efficiency of the coupled system can rise by 1.19 percentage points.In addition,the dynamic payback period of the CAES system is 3.36 years,and the net present value can reach RMB 14.581 million,showing a good economic return.

关 键 词：压缩空气储能 电解水制氢 氢能固体燃料电池 系统耦合 系统性能分析 

分 类 号：TK91[动力工程及工程热物理]