中国电机工程学报2025，Vol.45Issue(14)：5422-5430,中插8,10.DOI:10.13334/j.0258-8013.pcsee.241463
基于硫酸胍的吸附式二氧化碳储能系统性能研究
Performance Study of Adsorption Type Carbon Dioxide Energy Storage System Based on Guanidine Sulfate
摘要
Abstract
As a physical energy storage technology that can be applied to large-scale scenarios,compressed carbon dioxide energy storage can effectively improve the stability and reliability of new power system.In this paper,an adsorption type carbon dioxide energy storage system is proposed based on the adsorption and storage of low-pressure carbon dioxide by guanidine sulfate solution.The purpose is to improve the low-pressure side gas storage density of the trans-critical compressed carbon dioxide energy storage system and eliminate the system's dependence on natural caves or large volume gas storage facilities.The thermodynamic model of the system is established.The energy analysis and exergy analysis are carried out to explore the system.The results point out that the system round-trip efficiency and energy density are 69.43%and 9.80 kW⋅h/m3 under basic operating condition.The optimization and improvement of the system should give priority to improving the efficiency of turbomachinery.Reducing the level-3 cooling temperature,reducing the pinch point temperature difference of heat exchanger and increasing the discharge pressure are conductive to upgrading the system properties.The adsorption pressure should be properly set to balance the round-trip efficiency and energy density.The system can achieve maximum energy density of 14.45 kW⋅h/m3 when the adsorption pressure is 0.1 MPa.Research indicates that the proposed system combines the advantages of high efficiency and high energy density,demonstrating promising application potential.关键词
压缩二氧化碳储能/吸附储存/热力学模型/㶲分析/灵敏度分析Key words
compressed carbon dioxide energy storage/adsorption storage/thermodynamic model/exergy analysis/sensitivity analysis分类
能源科技引用本文复制引用
刘旭,范世岩,何青,李红..基于硫酸胍的吸附式二氧化碳储能系统性能研究[J].中国电机工程学报,2025,45(14):5422-5430,中插8,10.基金项目
国家重点研发计划项目(2020YFB0905902). National Key R&D Program of China(2020YFB0905902). （2020YFB0905902）
