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Design and development of an advanced gas storage device and control method for a novel compressed CO2 energy storage system

Author

Listed:
  • Peng, Yirui
  • Zhu, Ju
  • Wang, Jia
  • Zhang, Shuqi
  • Du, Qian
  • Dong, Heming
  • Zhang, Yu
  • Gao, Jianmin
  • Xie, Min

Abstract

Compressed CO2 energy storage (CCES) has advantages over compressed air in energy density and efficiency. Compared to air, CO2 needs to be in a closed-loop cycle in the CCES. The development of CCES is constrained by low-pressure CO2 storage. Storage density can be increased by adsorption without changing pressure. However, the control of the flow rate during adsorption/desorption has rarely been studied experimentally. In this paper, an adsorption tower for CCES is proposed and the regulation of the desorption flow rate is experimentally investigated. Using temperature-swing adsorption, the storage and release can be regulated without reducing the energy storage capacity. During the desorption process, the temperature of the exhaust gas can also be maintained stably. The adsorbent with a volume of 51.81 L was able to release 6121.9 g of CO2 when heated to 200 °C. Under the same pressure conditions, the effective storage density of the tower can reach 118.2 g/L, which is 67.5 times higher than the gaseous density (1.75 g/L, 1 bar, 303 K). The desorption flow rate is linearly related to the forward speed of the front in the adsorption tower. The flow rate can be regulated by controlling the superficial gas velocity and the desorption temperature. This method can match the flow rate of the adsorption tower with the gas consumption of the compressor, providing a novel solution for CCES.

Suggested Citation

  • Peng, Yirui & Zhu, Ju & Wang, Jia & Zhang, Shuqi & Du, Qian & Dong, Heming & Zhang, Yu & Gao, Jianmin & Xie, Min, 2024. "Design and development of an advanced gas storage device and control method for a novel compressed CO2 energy storage system," Renewable Energy, Elsevier, vol. 237(PA).
    • Handle: RePEc:eee:renene:v:237:y:2024:i:pa:s0960148124016033
    DOI: 10.1016/j.renene.2024.121535
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