TY - JOUR
T1 - Compressed air seesaw energy storage: A solution for long-term electricity storage
AU - Hunt, Julian David
AU - Zakeri, Behnam
AU - Nascimento, Andreas
AU - Gazoli, Jonas Rafael
AU - Bindemann, Fabio Tales
AU - Wada, Yoshihide
AU - van Ruijven, Bas
AU - Riahi, Keywan
N1 - KAUST Repository Item: Exported on 2023-02-22
Acknowledgements: This research was funded by the project entitled “Eficientização Energética de Usina Termelétrica a Gás Através do Aproveitamento Termodinâmico do Gás Natural” within the scope of R&D ANEEL program and financed by Âmbar Energia LDTA.
PY - 2023/1/12
Y1 - 2023/1/12
N2 - The globe is witnessing a significant energy transformation with an increasing proportion of variable energy sources like wind and solar on the grid. Energy storage solutions are required to enable a seamless integration of these renewable energy sources. This paper presents a novel isothermal compressed air energy storage (CAES) consisting of two floating storage vessels in the deep ocean that operates by balancing the pressure of the upper and lower tanks with the oceanic pressure. The methodology consists of estimating the proposed system's energy storage potential and operational parametrization. Results show that the maximum compression ratio between the two storage vessels is four, which significantly increases the system's efficiency and lowers compression costs. Compressed air seesaw energy storage is a cheap alternative for storing compressed air because it does not require large, pressurized tanks or sand cavers. It is expected to cost between 10 and 50 USD/kWh for electric energy storage and between 800 and 1500 USD/kW for the installed power capacity. Seesaw is an interesting alternative to pumped hydro and hydrogen for long-term energy storage cycles in islands and coastal regions close to the deep sea.
AB - The globe is witnessing a significant energy transformation with an increasing proportion of variable energy sources like wind and solar on the grid. Energy storage solutions are required to enable a seamless integration of these renewable energy sources. This paper presents a novel isothermal compressed air energy storage (CAES) consisting of two floating storage vessels in the deep ocean that operates by balancing the pressure of the upper and lower tanks with the oceanic pressure. The methodology consists of estimating the proposed system's energy storage potential and operational parametrization. Results show that the maximum compression ratio between the two storage vessels is four, which significantly increases the system's efficiency and lowers compression costs. Compressed air seesaw energy storage is a cheap alternative for storing compressed air because it does not require large, pressurized tanks or sand cavers. It is expected to cost between 10 and 50 USD/kWh for electric energy storage and between 800 and 1500 USD/kW for the installed power capacity. Seesaw is an interesting alternative to pumped hydro and hydrogen for long-term energy storage cycles in islands and coastal regions close to the deep sea.
UR - http://hdl.handle.net/10754/688140
UR - https://linkinghub.elsevier.com/retrieve/pii/S2352152X2300035X
U2 - 10.1016/j.est.2023.106638
DO - 10.1016/j.est.2023.106638
M3 - Article
SN - 2352-1538
VL - 60
SP - 106638
JO - JOURNAL OF ENERGY STORAGE
JF - JOURNAL OF ENERGY STORAGE
ER -
