Water storage and compressed air

Can compressed air energy storage be combined with pressurized water thermal energy storage?

This paper presents a hybrid system integrating compressed air energy storage (CAES) with pressurized water thermal energy storage (PWTES). The open type isothermal compressed air energy storage (OI-CAES) device is applied to the CAES subsystem to achieve near-isothermal compression of air.

What is compressed air energy storage?

Compressed air energy storage is a promising medium- and long-term energy storage method, and can be used as a large-scale energy storage system to provide a feasible solution for the commercialization of energy storage. Compressed air energy storage technology has the advantages of large energy storage scale, long life, and pollution-free [ 6 ].

What are the different types of compressed air energy storage?

According to the different treatments of the compression heat generated during air compression, the current CAES technology is divided into diabatic compressed air energy storage (D-CAES), adiabatic compressed air energy storage (A-CAES), and isothermal compressed air energy storage (I-CAES), etc , , .

What are the advantages of compressed air energy storage system?

Compared with other types of energy storage systems, compressed air energy storage (CAES) system has the advantages of low cost, long life, and less impact on environmental. Low cycle efficiency limits its development.

Where is compressed air stored?

The compressed air (state 6) is stored in the air storage chamber (ASC). At the same time, the water (state 12) in the low-pressure water storage tank (LWST) is pressurized by a PUM and then (state 13) diverted to the HX1 and the HX2 to absorb the compression heat of the air.

Can open type isothermal compressed air energy storage improve energy storage density?

To improve the energy storage density of the I-CAES system, researchers proposed an open type isothermal compressed air energy storage (OI-CAES) with air compression/expansion and water–air heat transfer in two vessels .