Principle of supplementary combustion compressed air energy storage

What is supplementary combustion energy storage (CAES)?

The operation characteristic of the CAES The traditional CAES, also known as supplementary combustion compressed air energy storage, has a complete operating process including energy storage and energy release, and the operating principle is shown in Fig. 2. The essence of energy storage is to use surplus electricity to compress air.

What is compressed air energy storage (CAES)?

As an energy storage technology, compressed air energy storage (CAES) has the unique advantages of electricity-thermal joint storage and joint supply, long life cycle, and low installation cost.

How does compressed air energy storage work?

Another point that needs to be explained for CAES is that compressed air energy storage has the ability to switch working conditions quickly. The working condition conversion from maximum power generation to maximum compression power can be realized within 5 min, and the start-up time of the power generation mode is about 11 min [ 45 ].

How is compressed air stored?

Compressed air storage Compressed air can be stored either at constant volume (isochoric) or at constant pressure (isobaric). In case of constant volume storage, the pressure varies and thus indicates the state of charge. The most common example of isochoric storage is a steel pressure vessel or, at large scale, a salt cavern.

What is a-CAES without thermal energy storage?

A-CAES without thermal energy storage (TES) The simplest way to reuse the temperature related part of the exergy of the compressed air is to store the hot air itself inside a combined thermal energy and compressed air storage volume (Fig. 18a).

Can compressed air energy storage improve the profitability of existing power plants?

Linden Svd, Patel M. New compressed air energy storage concept improves the profitability of existing simple cycle, combined cycle, wind energy, and landfill gas power plants. In: Proceedings of ASME Turbo Expo 2004: Power for Land, Sea, and Air; 2004 Jun 14–17; Vienna, Austria. ASME; 2004. p. 103–10. F. He, Y. Xu, X. Zhang, C. Liu, H. Chen