Pumped water storage air energy storage

What is pumped hydro combined with compressed air energy storage system (PHCA)?

Pumped hydro combined with compressed air energy storage system (PHCA) is a novel energy storage system that could help solve energy storage difficult in China's arid regions. This combination integrates the advantages and overcomes the disadvantages of both compressed air energy storage systems and pumped hydro storage systems.

What is pumped compressed air energy storage system (pH-CAES)?

Pumped compressed air energy storage system (PH-CAES) is an isothermal compressed air energy storage system (I-CAES), which has been widely studied by scholars [31, 32].

Can pumped hydro-compressed air energy storage system be used as a spray system?

Therefore, a pumped hydro-compressed air energy storage system combined with a compressed air energy storage system as a spray system is introduced in the present research and analyzed by thermodynamic and economic analysis to verify the feasibility of system.

What are the benefits of air storage system?

The system can significantly improve the air temperature in the air storage room, reduce the pressure energy loss of the system, and increase the energy storage capacity. Moreover, achieving high system round-trip efficiency is dependent on components of the system with high efficiencies.

What is the efficiency of air storage system?

The results show that the round-trip efficiency and total exergy efficiency of the system are 52.45% and 77.8%. The system can significantly improve the air temperature in the air storage room, reduce the pressure energy loss of the system, and increase the energy storage capacity.

How can a long-duration energy storage system be improved?

Addressing these challenges requires advancements in long-duration energy storage systems. Promising approaches include improving technologies such as compressed air energy storage and vanadium redox flow batteries to reduce capacity costs and enhance discharge efficiency.