Experimental study of adsorption CO2 storage device for compressed CO2 energy storage system. (February 2023)

• Record Type: Journal Article
• Authors: Peng, Yirui; Gao, Jianmin; Zhang, Yu; Zhang, Jin; Sun, Qiaoqun; Du, Qian; Tang, Zhipei; Zhang, Tianhang
• Is Part Of: Journal of energy storage. Volume 58(2023)
• Publication Date: 2023-02
• Subjects: Compressed CO2 energy storage -- Low-pressure CO2 storage -- Adsorption storage system -- Storage capacity -- Density -- Heat exchange efficiency; Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2022.106286
• Languages: English
• ISSNs: 2352-152X

Abstract

Abstract: Compressed CO2 energy storage is a reliable physical energy storage solution. The main challenge of compressed CO2 energy storage system is how to solve the high-density storage of low-pressure CO2 . In this study, we proposed a new type of adsorption transcritical compressed CO2 energy storage system. We used adsorbents to adsorb CO2 for achieving low-pressure, high-density storage of low-pressure CO2 . We investigated the gas storage capacity of the adsorption storage system and the heat and mass transfer process. Results demonstrate that the storage density (57.6 °C–25 °C) of adsorption gas storage is 43.46 kg/m 3, which is 24.8 times of the CO2 density (1.75 kg/m 3, 30 °C, 1 bar). If the adsorbents are heated above 160 °C, then the storage density will increase 3–4 times. The whole process is controlled by heat exchange efficiency. The heat exchange efficiency greatly affects the response time of the system during the application. Highlights: A novel adsorption-type compressed CO2 energy storage system is proposed. An adsorption gas storage device for the compressed carbon dioxide energy storage system is proposed. Experiment showed that by adsorption, the storage density can be increased by 24.8 times without changing the pressure. The CO2 storage density of the device can be increased by up to a maximum of 82.1 times of CO2 (1.75Kg/m 3, 303K, 1bar).