A supercritical carbon dioxide cycle power generation system for photothermal power generation

Abstract

The invention provides a supercritical carbon dioxide cycle power generation system for photothermal power generation, which includes a mirror field system, a molten salt system, a carbon dioxide thermoelectric conversion system and a cooling system connected in sequence. The carbon dioxide thermoelectric conversion system includes an intermediate heat exchanger, and an intermediate The turbine assembly connected to the heat exchanger, the regenerator assembly connected to the turbine assembly, the regenerator assembly is connected to the intermediate heat exchanger, the regenerator assembly is also connected to the main compressor with intercooling and the recompressor, and then The compressor is connected with the turbine assembly to form a Brayton cycle structure. The supercritical carbon dioxide cycle power generation system for photothermal power generation provided by the present invention can improve the overall efficiency of the system, reduce the proportion of initial investment and power generation costs, and improve market competitiveness when using solar thermal power generation. It has high efficiency and simple system , Good adjustment performance, has broad application prospects and market value.

Description

technical field [0001] The invention belongs to the technical field of thermal power generation, and in particular relates to a supercritical carbon dioxide cycle power generation system for photothermal power generation. Background technique [0002] Solar thermal power generation is a technology that uses a large-scale mirror field to collect solar energy, converts solar energy into thermal energy and transfers it to a working substance, and then uses thermodynamic cycle technology to convert thermal energy into electrical energy. Solar thermal power generation is an important development direction of new clean energy in the world in the future. Supercritical carbon dioxide thermodynamic cycle technology is based on the principle of Brayton cycle, a new type of thermal cycle technology formed by regulating and matching the physical property change characteristics of supercritical carbon dioxide working fluid with the typical process of thermodynamic cycle. The entire ther...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a supercritical carbon dioxide cycle power generation system for solar thermal power generation, which solves how to further improve the overall efficiency of the system, reduce the initial investment proportion and power generation cost, and improve market competitiveness when using solar thermal power generation It has the advantages of high efficiency, simple system and good adjustment performance, and has broad application prospects and market value.

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