Ouagadougou compressed energy storage

What is compressed air energy storage?

Compressed air energy storage (CAES) is one of the many energy storage options that can store electric energy in the form of potential energy (compressed air) and can be deployed near central power plants or distribution centers. In response to demand, the stored energy can be discharged by expanding the stored air with a turboexpander generator.

What are the different types of compressed air energy storage systems?

After extensive research, various CAES systems have been developed, including diabatic compressed air energy storage (D-CAES), adiabatic compressed air energy storage (A-CAES), and isothermal compressed air energy storage (I-CAES) . A-CAES recovers the heat of compression, improving system efficiency by fully utilizing this heat.

Which is better air or carbon dioxide in adiabatic compressed energy storage?

Thermodynamic-economic performances of different systems are compared. Air is overall superior to carbon dioxide in compressed energy storage. Currently, working fluids for adiabatic compressed energy storage primarily rely on carbon dioxide and air. However, it remains an unresolved issue to which of these two systems performs better.

What is an example of a compressed air energy storage plant?

The 290 MW×2h Huntorf power station in 1978 and the 110 MW×26 h McIntosh power station in 1991 are examples of traditional compressed air energy storage plants. Their efficiencies are 42 % and 53 % respectively. The sliding-pressure range of the gas storage facility from approximately 4.6 to 7.5 MPa .

What is adiabatic compressed energy storage temperature?

For adiabatic compressed energy storage, three thermal storage temperatures were considered, namely high storage temperature (A-CAES: 591 ℃, VV-CCES: 375 ℃), medium storage temperature (A-CAES: 388 ℃, VV-CCES: 273.5 ℃), and low storage temperature (A-CAES: 130 ℃, VV-CCES: 115 ℃).

Which energy storage technology has the lowest cost?

The “Energy Storage Grand Challenge” prepared by the United States Department of Energy (DOE) reports that among all energy storage technologies, compressed air energy storage (CAES) offers the lowest total installed cost for large-scale application (over 100 MW and 4 h).