Waste heat reheating based compressed air energy-storage power-generation system

Abstract

The invention relates to a waste heat reheating based compressed air energy-storage power-generation system. The waste heat reheating based compressed air energy-storage power-generation system comprises a compressor, an air energy-storage cabinet, a power generator and a grid connected system, and also comprises a complementary energy storage power-generation device provided with a waste heat phase change accumulator and used for heating inlet air of an air turbine, high-temperature and high-pressure air at an outlet of the compressor is cooled to an appropriate temperature, the cooled air is sent to the air energy-storage cabinet, a working medium in the waste heat phase change accumulator changes to a liquid from a solid, and the phase change accumulator heats high-pressure air entering the air turbine through a waste heat transfer loop during power generation to improve the enthalpy and the capability for work in order to improve the energy-storage power generation capacity. The waste heat reheating based compressed air energy-storage power-generation system can be integrated to an integrated electric-mode electricity storage module apparatus, can realize the standardized production of a plurality of capacity grades, and can be widely used in high-electricity-consumption industrial and commercial enterprises to realize the saving of the electric charge, the use as a standby power supply and the movement of the electricity from the peak to the valley.

Description

technical field [0001] The invention belongs to the technical field of industrial energy saving and energy storage power generation, in particular to a compressed air energy storage power generation system based on waste heat reheating. Background technique [0002] Industrial and commercial enterprises often need to consume a large amount of electricity to drive production equipment and supporting power equipment required to maintain production. The power consumption capacity ranges from a few thousand kW to tens of thousands or even more than a hundred thousand kW. Large power consumption means high energy consumption costs and reduced product profit margins for enterprises; for public power grids, it means that more power consumption capacity and power transmission and distribution equipment must be provided for them, and the difference between peak and valley loads of power grids is greater. The larger and larger, leading to more and more reliance on large-scale thermal ...

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Problems solved by technology

[0006] Pumped storage power station is a clean and effective technical method for storing electricity, but it has high requirements on geological conditions, high cost, and great environmental impact, so it can only be implemented in some qualified areas

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