热力发电2025，Vol.54Issue(2)：68-78,11.DOI:10.19666/j.rlfd.202407180
耦合缓冲过程的绝热-等温压缩空气储能系统热力性能研究
Thermodynamic performance of adiabatic-isothermal compressed air energy storage system coupled with buffer tank
摘要
Abstract
To ensure the continuously stable operation of adiabatic isothermal-compressed air energy storage system,an adiabatic-isothermal compressed air energy storage method coupled with buffer tank is proposed.The dynamic thermodynamic model of the buffer tank coupled system is established,and the experimental platform is set up to verify the model.Besides,the variation mechanism of air temperature and pressure in the buffer tank is revealed,and the influence of design parameters of buffer tank on system performance is explored.The results show that,the adiabatic-isothermal compressed air energy storage system with buffer tank exhibits favorable isotherm,and the highest temperature difference at 30 K during the cycle.The adiabatic efficiency of the compressor unit of the coupled buffer tank system increased by 8 percentage points,and the exergy loss of the compressor unit decreased.Sensitivity analysis shows that the change of energy storage power has little effect on thermodynamic parameters of the air storage room,and the volume of the buffer tank decreases with the increase of energy storage power.Moreover,the change of energy storage scale has little influence on thermodynamic parameters of the air storage room,and the change trend of air temperature shows a periodic fluctuation.When the system energy storage scale increases,the volume of buffer tank will increase with the energy storage scale.The study provides a novel scheme for the continuous,stable and efficient operation of adiabatic-isothermal compressed air energy storage system.关键词
液体活塞/绝热-等温压缩空气储能系统/缓冲罐/热力学分析Key words
liquid piston/adiabatic-isothermal compressed air energy storage system/buffer tank/thermodynamic analysis引用本文复制引用
陈昊,张宇飞,李瑞雄,孙昊,王焕然..耦合缓冲过程的绝热-等温压缩空气储能系统热力性能研究[J].热力发电,2025,54(2):68-78,11.基金项目
国家自然科学基金项目(51676151) National Natural Science Foundation of China(51676151) （51676151）
