Schematic diagram of supplementary combustion compressed air energy storage

How supplementary combustion CAES system is classified?

Schematic diagram of the supplementary combustion CAES system. Energy losses inside turbomachinery are usually classified based on flow phenomena and mechanism, including incidence loss, skin friction loss, clearance loss, blade loading loss, mixing loss and so on.

What is a compressed air energy storage plant?

Schematic diagram of a compressed air energy storage (CAES) Plant. Air is compressed inside a cavern to store the energy, then expanded to release the energy at a convenient time. [...] Driven by global concerns about the climate and the environment, the world is opting for renewable energy sources (RESs), such as wind and solar.

What is compressed air energy storage (CAES)?

Compressed air energy storage (CAES) is considered to be one of the most promising large-scale energy storage technologies, due to its advantages, such as large energy storage capacity, high system efficiency, long operating life, and small investment .

What is adiabatic compressed air energy storage system (a-CAES)?

The adiabatic compressed air energy storage system (A-CAES) is promising to match the cooling, heating, and electric load of a typical residential area in different seasons by adjusting the trigeneration, which can increase the efficiency of energy utilization . Fig. 1.

What is a centrifugal compressor in a CAES system?

As shown in the figure, the centrifugal compressors are the key front-end energy conversion component for CAES. Also, the centrifugal compressors in the CAES system have the characteristics of wide variety mass flow rate and operating points .

How does a 4-stage air compressor work?

The operation mode stops when the stored air pressure reaches a certain value. The air is compressed by the whole 4-stage compressor and enters into the air storage tank. The proposed configuration could relieve the choke issue of sliding-pressure compression under lower storage pressure condition.