Performance analysis of supercritical-supercritical carbon dioxide energy storage system
With the popularization of intermittent renewable energy,energy storage system plays a key role in the power grid.Compared with air energy storage system,carbon dioxide has the advantages of high energy storage density,easy liquefaction,and environmental friendliness.Firstly,a supercritical-supercritical carbon dioxide energy storage system is established.Then,Aspen Plus simulation software is used to model and analyze the energy storage process.The effects of parameter changes such as energy storage pressure,energy release pressure,heater heating temperature,throttle valve pressure drop,compressor efficiency,expander efficiency and other parameters on system performance are revealed.Finally,the parameters of this carbon dioxide energy storage system are analyzed to obtain the optimal process parameters of the system.At the same time,the system is analyzed to obtain the loss distribution,and the internal causes of the system are analyzed and discussed.
carbon dioxide energy storage systemthermodynamicsparameter optimizationexergy analysis
万方数据
维普
