Air pressure water energy storage device

How does a water storage system work?

During charging, the air in the water storage vessel and air cavern is compressed by the pumped water. Subsequently, compressors 1 and 2 compress the air into the two tanks for energy storage. During discharging, the compressed air expands and successively transfers the pressure energy to the hydraulic turbine and expander for power generation.

What is underwater compressed air energy storage system?

Underwater compressed air energy storage system In the 1980s, Laing et al. proposed the UWCAES technology, which realizes the constant-pressure storage of compressed air through hydrostatic pressure.

How does an underwater compressed air flexible bag energy storage system work?

Once the stored compressed air is needed, the underwater compressed air flexible bag energy storage device will deliver the low-temperature and high-pressure compressed gas to the power generation system on the barge, and the low-temperature and high-pressure compressed air will enter the heat exchanger that stores heat.

What is a flexible air storage device?

Schematic of the rigid underwater air storage device designed for UW-CAES systems. Flexible air storage devices, generally made from materials like rubber and nylon, are called energy bags. The energy bag, characterized by stretchability and cost-effectiveness, represents a viable alternative to rigid containers.

Do air storage devices work in fresh seawater?

(1) Air storage device. The performance and materials of air storage devices have been investigated. By performing experiments, Pimm et al. discovered that an energy bag can operate efficiently in fresh seawater with good sealing performance. The volume of the storage bag can be reduced by increasing the storage depth .

How air storage device works?

The air storage device comprises an inner superelastic rubber material and an outer rigid container. During the charging process, high-pressure air is first injected into the interior of the elastic rubber material, causing it to expand. The pressure energy of the air is converted into the elastic strain energy of the rubber.