Coal mine compressed air energy storage power station

4 FAQs about [Coal mine compressed air energy storage power station]

Can a compressed air energy storage system be used in coal mines?

The present study focuses on the compressed air energy storage (CAES) system, which is one of the large-scale energy storage methods. As a lot of underground coal mines are going to be closed in China in the coming years, a novel CAES system is proposed for application in roadways of the closing coal mines.

How is compressed air stored in a coal mine?

The compressed air is stored in the tunnels of abandoned coal mines. Simultaneously, the heat generated during compression is transferred via intercoolers to a thermal storage tank. At night, when the electricity demand increases and supply tightens, the high-pressure air is reheated and expanded through a turbine to generate electricity.

What is flooded coal mine roadway compressed air energy storage (FM-CAES)?

Considering the widespread occurrence of high water levels in southern China''s coal mines, a novel flooded coal mine roadway compressed air energy storage (FM-CAES) system is proposed. This system leverages water pressure to maintain constant air pressure, thereby enhancing efficiency and minimizing leakage.

What is a compressed air energy storage cavern?

The structure of a compressed air energy storage (CAES) cavern. The distribution and geological conditions of roadways in coal mines is different from other caverns. Some particular spaces in coal mines, such as vertical shafts, can also be used.

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