First and second law analysis and operational mode optimization of the compression process for an advanced adiabatic compressed air energy storage based on the established comprehensive dynamic model

Wei Chen, Jianshu Bai, Guohua Wang, Ningning Xie, Linrui Ma, Yazhou Wang, Tong Zhang and Xiaodai Xue

Energy, 2023, vol. 263, issue PC

Abstract: Compressed air energy storage (CAES) possesses great application potential. The dynamic characteristic of the compression process is meaningful for the parameter optimization and control design of the CAES system. A dynamic model of the compression process for an advanced adiabatic CAES (AA-CAES) system is created on the basis of the principles of conservations of mass, momentum, and energy of an opening system. The reliabilities of the proposed model are verified from two aspects of the compressor model and air storage device model. Energy and exergy analysis indicates that the proposed model follows the first and second laws of thermodynamics. The exergy losses of each component are calculated for the whole dynamic process. Calculation results show that the exergy losses in the compressors are higher than those in the heat exchangers. A multi-objective optimization is conducted by Genetic Algorithm. The mass optimum solution can improve ηex and mair by 0.014% and 0.660%, respectively. Four operational modes are proposed and optimized to improve the compression efficiency. The thermal performances of the design condition and four operational modes are simulated and compared. The comparison results show that modes N2 and N1 are the better operational modes, with high efficiency and low power consumptions, respectively.

Keywords: AA-CAES; Dynamic modeling; First and second law analysis; Operational mode optimization (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:263:y:2023:i:pc:s0360544222027682

DOI: 10.1016/j.energy.2022.125882

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