Compressed Air Energy Storage Device

Abstract

Provided is a compressed air energy storage device that includes: a compressor that is driven by an electric motor; a pressure accumulation tank that stores compressed air compressed by the compressor; an expander that is driven by the compressed air stored in the pressure accumulation tank; a generator that is driven by the expander; and a pneumatic pressure supply pipe that supplies the compressed air to a pneumatic apparatus driven by a pneumatic pressure, the compressor compresses air to a pressure exceeding a predetermined pressure set higher than a pneumatic usage pressure for driving the pneumatic apparatus, compressed air whose pressure exceeds the predetermined pressure is supplied to the expander to generate electric power, and compressed air whose pressure is equal to or lower than the predetermined pressure is supplied to the pneumatic apparatus via the pneumatic pressure supply pipe.

Dependencies are inferred from the claim text.