The key parameters for the air compression sub-system of liquid air energy storage system（LAES）

air liquefaction sub-system and expansion power generation subsystem are analyzed throughout the process flow study of the LAES and the modeling of thermodynamics and based on the system efficiency layer.The analysis results give qualitatively the coupling relationship between temperature and pressure of inlet and outlet

low pressure pump efficiency

expansion power generation subsystem release pressure and temperature and system efficiency.Based on this

the relationship is verified by simulation and suggestions for the design of system key parameters are given.The system efficiency is improved and the feasibility of the LAES system is verified.