THERMO-ECONOMIC ANALYSIS OF TRIGENERATION SYSTEM BASED ON AA-CAES

Han Zhonghe; Sun Ye; Li Peng; Hu Qingya

doi:10.19912/j.0254-0096.tynxb.2020-0402

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (2) : 97-103. DOI: 10.19912/j.0254-0096.tynxb.2020-0402

THERMO-ECONOMIC ANALYSIS OF TRIGENERATION SYSTEM BASED ON AA-CAES

Han Zhonghe, Sun Ye, Li Peng, Hu Qingya

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Abstract

In order to investigate the effect of heat distribution and utilization in heat storage tank on the performance of advanced adiabatic compressed air energy storage system, and improve the efficiency and economy of the system in the grid-connected application of renewable energy, five heat distribution schemes are proposed. By means of numerical simulation, the thermodynamic and economic characteristics of the system under five schemes are compared, and the influence of key parameters on the performance of the system under different schemes is also studied. The results show that the higher the heat distribution ratio, the higher the cycle efficiency and the smaller the annual profit margin. For the five heat distribution schemes, cycle efficiency and annual profit margin exists the minimum values with the increase of the maximum pressure ratio of gas storage chamber. And there is an optimal heat exchanger effectiveness, so that the cycle efficiency and annual profit margin have the maximum. The effect of the inlet temperature of the compressor on the cycle efficiency and annual profit margin of the five heat distribution schemes is different. Moreover, the annual profit margin decreases as fuel price increases while increases as product price increases.

Key words

compressed air energy storage / numerical simulation / performance analysis / combined cooling,heating and power trigeneration / heat distribution

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Han Zhonghe, Sun Ye, Li Peng, Hu Qingya. THERMO-ECONOMIC ANALYSIS OF TRIGENERATION SYSTEM BASED ON AA-CAES[J]. Acta Energiae Solaris Sinica. 2022, 43(2): 97-103 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0402

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