Air compressor intake two-stage cooling system and method for compressed air energy storage power station

Abstract

The application provides an air compressor air intake two-stage cooling system and method for compressed air energy storage power station, and belongs to the technical field of energy storage power station.In the application, the compressed air discharged by the air compressor is divided into two paths after heat exchange and temperature reduction with the heat storage medium in the exhaust heat exchanger, the first path enters the air storage chamber for storage, and the second path enters the refrigeration subsystem;the refrigeration subsystem comprises two-stage refrigeration units of a turbine expander and a compression type water chiller, the turbine expander generates electric power for serving as the power supply of the compression type water chiller, the two-stage refrigeration units generate the cooling medium required by the primary cooler and the secondary cooler respectively, the medium of the primary cooler is the chilled water taken by the compression type water chiller, and the medium of the secondary cooler is the low-temperature air discharged by the turbine air compressor.The application breaks through the lower limit of the cooling temperature of the prior art, realizes deep cooling of the air intake temperature of the air compressor, and significantly reduces the power consumption of the air compressor.

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