Compressed air heat storage and power generation system

Abstract

The invention discloses a compressed air heat storage and power generation system, and belongs to the field of clean energy utilization. The system comprises a solar heat absorber for absorbing sunlight to heat internal air and releasing high-temperature air, a heat storage device for storing heat of the high-temperature air, a turbine for being pushed by high-temperature compressed air to do work, a generator driven by the turbine to generate power, a fan, a first-stage heat regenerator and a second-stage heat regenerator for heating the compressed air through the high-temperature air, a compressor for compressing and pressurizing the filtered air, a filter for filtering impurities in the air, corresponding connecting pipelines, and a plurality of valves arranged on the connecting pipeline. When the lighting condition is good in daytime, the system can operate in a power generation mode and a heat storage mode at the same time; and at night or in cloudy days without sun illumination, the system can operate in a heat release mode to generate power. According to the system, by adopting air as a working medium to couple solar heat and a heat storage technology, heat storage and power generation can be realized, and the system is simple, long in service lifetime, clean and pollution-free.

Description

technical field [0001] The invention relates to the fields of heat storage and solar power generation, in particular to a compressed air heat storage power generation system. Background technique [0002] Under the national urgent goal of "carbon peaking" and "carbon neutrality", and under the severe situation of international heat energy utilization, heat is becoming a rare resource. my country's energy policy encourages the development of various forms of clean energy; storage Heat can promote the integration of various renewable energy sources, so that these decentralized random renewable energy sources can be supplied on demand and can shift the peak of electric load. [0003] At present, most solar power generation technologies mostly use steam turbine power generation technology with molten salt heat storage, and the complex operation and maintenance costs of the system are high. [0004] The compressed air energy storage power generation technology currently developed...

AI Technical Summary

Problems solved by technology

[0003] At present, most solar power generation technologies mostly use steam turbine power generation technology with molten salt heat storage, and the complex operation and maintenance costs of the system are high.

[0004] The compressed air energy storage power generation technology currently developed in the world uses high-pressure gas storage for energy storage. The temperature rises when the air is compressed, and the energy is lost when the temperature drops during storage. It is necessary to set up a supplementary heating system to provide additional heat, and the overall power generation efficiency is low; and traditional compression Air energy storage power generation requires the construction of large-scale high-pressure gas storage tanks or the search for large-scale gas storage facilities. These limitations make it impossible to flexibly arrange and apply them, so they have not been further promoted

Images