US 12,405,067 B2
Multipurpose multi-source heat-storing compressed air energy storage system and method of same
Ningning Xie, Beijing (CN); Xinxing Lin, Beijing (CN); Likun Yin, Beijing (CN); and Changping Sun, Beijing (CN)
Assigned to CHINA THREE GORGES CORPORATION, (CN)
Appl. No. 18/025,319
Filed by CHINA THREE GORGES CORPORATION, Beijing (CN)
PCT Filed May 25, 2021, PCT No. PCT/CN2021/095843
§ 371(c)(1), (2) Date Mar. 8, 2023,
PCT Pub. No. WO2022/222219, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 202110420392.7 (CN), filed on Apr. 19, 2021; and application No. 202120800207.2 (CN), filed on Apr. 19, 2021.
Prior Publication US 2024/0240876 A1, Jul. 18, 2024
Int. Cl. F28D 20/00 (2006.01)
CPC F28D 20/0056 (2013.01) [F28D 20/0034 (2013.01); F28D 2020/0013 (2013.01); F28D 2020/0078 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A multipurpose multi-source heat-storing compressed air energy storage system, comprising a packed bed heat-storing device (1), a heat-storing circuit (2), a heat-releasing circuit (3), a gas-storing circuit (4), a photothermal circuit (5), a heating-supplying circuit (6) and a cooling-supplying circuit (7), wherein said heat-storing circuit (2) and said heat-releasing circuit (3) are connected to said packed bed heat-storing device (1), respectively, and the heat-storing heat exchanger (21) of said heat-storing circuit (2) and the heat-releasing heat exchanger (31) of said heat-releasing circuit (3) are connected with said gas-storing circuit (4), respectively, said photothermal circuit (5) is connected with said heat-storing circuit (2), said heating-supplying circuit (6) is connected with said heat-releasing circuit (3) and said photothermal circuit (5), said cooling-supplying circuit (7) is connected to said packed bed heat-storing device (1) and said photothermal circuit (5), and said photothermal circuit (5) heats said heat-storing circuit (2) and said heat-releasing circuit (3),
wherein, the heat-storing circuit (2) includes a heat-storing pipeline, and a heat-storing heat exchanger (21) and a low-temperature canned motor pump (22) both connected in series to the heat-storing pipeline,
the heat-storing heat exchanger (21) and the heat-releasing heat exchanger (31) are connected to a compressor (23) and an expander (33), respectively,
the heat-releasing circuit (3) includes a heat-releasing pipeline, and the heat-releasing heat exchanger (31) and a high-temperature canned motor pump (32) both connected in series to the heat-releasing pipeline, and the expansion tank (34) is connected to the heat-releasing pipeline,
wherein, when the heat-releasing circuit (3) turns off and the heat-storing circuit (2) turns off, the heat-storing heat exchanger (21) converts high-temperature and high-pressure air into low-temperature and high-pressure air, and the heat-releasing heat exchanger (31) converts low-temperature and high-pressure air into high-temperature and high-pressure air, respectively.