熔盐储热耦合压缩空气储能系统经济性分析  

Economic analysis of a compressed air energy storage system coupled with molten salt thermal storage system

作　　者：赵瀚辰 韩伟 姚明宇[1] 孙雨薇 秦进 张顺奇 张可臻 陆续[1] ZHAO Hanchen;HAN Wei;YAO Mingyu;SUN Yuwei;QIN Jin;ZHANG Shunqi;ZHANG Kezhen;LU Xu(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054

出　　处：《热力发电》2024年第8期1-8,共8页Thermal Power Generation

基　　金：中国华能集团有限公司总部科技项目(HNKJ22-H24);陕西省重点研发计划(2024GX-ZDCYL-04-10)。

摘　　要：压缩空气储能作为一种大规模物理储能技术,广泛应用于可再生能源消纳和电网削峰填谷。设计了一种耦合熔盐储热的压缩空气储能系统,采用Ebsilon软件对复合系统进行建模仿真。基于该储能系统对外供应热水、蒸汽、电能的工况,研究不同系统运行模式下的?效率、热效率以及经济性。结果表明:复合系统在储气压力为7 MPa、排气温度系数为1.96时系统?效率最高,达到64.98%;在储气压力12 MPa时系统热效率最高,达到91.55%;在热汽电三联供应用场景下,最佳储能时长为6 h,储气压力为7、12 MPa时,最优发电时长分别为6、8 h;该研究可为耦合熔盐储热压缩空气储能热电联供提供理论指导。As a large scale of physical energy storage technology,compressed air energy storage technology is widely used in consumption of renewable energy and peak shaving of power grids.A compressed air energy storage system coupled with molten salt thermal storage is designed,and the composite system is modeled using Ebsilon software.Based on the operating conditions of the energy storage system supplying hot water,steam,and electricity,the exergy efficiency,thermal efficiency,and economic performance under different operating modes are studied.The results indicate that,the composite system achieves the highest exergy efficiency(64.98%)at a storage pressure of 7 MPa and an exhaust temperature coefficient of 1.96.The highest thermal efficiency(91.55%)is attained at a storage pressure of 12 MPa.In the application scenario of combined heat,steam,and electricity cogeneration,the optimal energy storage duration is 6 hours.Additionally,at gas storage pressures of 7 MPa and 12 MPa,the optimal power generation durations are 6 hours and 8 hours.This research provides theoretical guidance for the study of cogeneration of power and heating using compressed air energy storage system coupled with molten salt thermal storage system.

关 键 词：熔盐储热 压缩空气储能 热电联供 (火用)效率 热效率 

分 类 号：TK02[动力工程及工程热物理]