电力科技与环保2024，Vol.40Issue(3)：266-275,10.DOI:10.19944/j.eptep.1674-8069.2024.03.006
基于工质相变的变容储气A-CAES系统技术经济性分析
Technical and economic analysis of variable-volume gas storage A-CAES system based on working medium phase transition
摘要
Abstract
Adiabatic compressed air energy storage (A-CAES) systems commonly employ constant-volume gas storage,leading to incomplete air release from the storage vessel,resulting in challenges such as low energy storage density and high unit storage cost. To address this issue,a variable-volume gas storage A-CAES system based on working medium phase transition is proposed,which utilizes external working medium pressure to ensure complete air release from the storage device. However,adopting variable-volume gas storage increases the complexity of the storage system and equipment investment costs. Therefore,the technical and economic analysis of the variable volume gas storage A-CAES system based on the CO2 phase change of the working fluid is carried out in this paper,and compared with the constant volume gas storage A-CAES system. The results indicate that the energy storage density of the variable-volume gas storage A-CAES system based on working medium phase transition is 28.30 MJ/m3,which is 83.65％ higher than that of the constant-volume gas storage A-CAES system. The variable volume gas storage method can reduce the unit gas storage cost from 49.17 yuan/kg to 36.59 yuan/kg. Over the entire operational period,the dynamic payback period and net present value of the variable-volume gas storage A-CAES system are 7.36 years and 1.01 billion yuan,respectively,which is 1.45 years less and 38.32 million yuan more than that of the constant-volume gas storage A-CAES system.关键词
绝热压缩空气储能/变容储气/工质相变/能量储存密度/单位储气成本Key words
adiabatic compressed air energy storage/variable volume gas storage/working medium phase transition/energy storage density/unit gas storage cost分类
能源科技引用本文复制引用
张留淦,邓硕,叶楷,陈龙祥..基于工质相变的变容储气A-CAES系统技术经济性分析[J].电力科技与环保,2024,40(3):266-275,10.基金项目
福建省科技计划项目(2021H0045) （2021H0045）
泉州市科技计划项目(2022C019R) （2022C019R）
