Thermodynamic Analysis of a New Cogeneration System Combined Air Energy Storage with Chemical Looping System
Based on traditional compressed air energy storage mode,this study proposes a novel cogeneration system integrated methanol chemical looping combustion with compressed air energy storage.In the new system,the air compressor power consumption of the chemical looping combus-tion is eliminated in discharging process by utilizing excess electricity.Compared with conventional compressed air energy storage,the CO2 separation without energy consumption can be realized in discharging process of the new system.At the same time,the low temperature compression heat is stored in the charging process.Then the stored heat is used for low temperature methanol reduction reaction,improving low temperature thermal energy grade.The system was simulated in Aspen plus software.Additionally,the effects of oxidizer reaction temperature,pressure,and air flow rate on system performance were studied.Furthermore,based on the reference system of conventional chemical looping combustion,a comparative study of performance was carried out.Besides,com-pared with conventional chemical looping combustion,the thermal efficiency,electrical efficiency and exergy cycle efficiency of the new system were improved by 16.53％,5.82％and 9.20％,respectively.
compressed air energy storagechemical looping combustionthermodynamic study
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