Disc-type solar energy direct steam heat power generating system based on staged heat storage
A technology of thermal power generation system and solar energy, which is applied in the direction of solar thermal power generation, solar thermal devices, and mechanical power generated by solar energy. Improve system efficiency and reduce system loss
Inactive Publication Date: 2017-09-29
XI AN JIAOTONG UNIV
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[0005] The purpose of the present invention is to provide a dish-type solar thermal direct steam thermal power generation system based on hierarchical heat storage. The system has a reasonable structural design and can effectively solve the problem that the current dish-type solar thermal power generation system cannot be equipped with a heat storage system and the light-to-heat conversion efficiency is low. The problem
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[0026] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0027] see figure 1 , the disc-type solar direct steam thermal power generation system based on hierarchical thermal storage disclosed in the present invention, including a water supply unit, a concentrated heat collection unit, a thermal storage unit, a power generation unit and a steam drum 4;
[0028] The concentrating and heat-collecting unit is divided into an evaporation section and a superheating section. The evaporation section and the superheating section are equipped with a number of dish condensers 1 and cavity heat absorbers 2. The cavity heat absorber 2 is set at the focus of the dish condenser 1. The working medium outlet of the evaporation section is connected to the steam drum 4 through a pipeline, and the gas outlet of the steam drum 4 is connected to the gas inlet end of the...
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The invention discloses a disc-type solar energy direct steam heat power generating system based on staged heat storage and belongs to the technical field of disc-type solar energy power generating systems. A light-condensing heat collection unit comprises an evaporation section and an overheating section. A work medium outlet of the evaporation section is connected with a steam bag through a pipeline; a liquid outlet of the steam bag is merged into a water feed pipeline; an air outlet of the steam bag is connected with the air inlet end of the overheating section; an outlet of the overheating section is divided into two paths, one path is connected with a power generating unit, and the other path is connected with a heat storage unit; the heat storage unit comprises a high-temperature sensible-heat heat storage tank and a phase-change heat storage tank; the phase-change heat storage tank communicates with the water feed unit through a pipeline; one end of the water feed unit is connected to the evaporation section of the light-condensing heat collection unit through a pipeline, and the other end of the water feed unit is connected with the power generating unit; the phase-change heat storage tank is connected with the steam bag; the steam bag is connected with the high-temperature sensible-heat heat storage tank through a pipeline; and the high-temperature sensible-heat heat storage tank is connected to the power generating unit through a pipeline. The disc-type solar energy direct steam heat power generating system is reasonable in structural design, and the problem that an existing disc-type solar energy heat power generating system cannot be provided with a heat storage system and is low in photo-thermal conversion efficiency can be effectively solved.
Description
technical field [0001] The invention belongs to the technical field of dish-type solar power generation systems, and in particular relates to a dish-type solar direct steam thermal power generation system based on hierarchical thermal storage. Background technique [0002] With the environmental impact caused by the consumption of fossil energy, solar thermal power generation has become an important part of the energy supply side due to its abundant reserves and environmental friendliness. At present, concentrating solar thermal power generation technology (CSP) mainly has three types: tower type, trough type and dish type thermal power generation. Among them, the dish type solar thermal power generation system has a high concentration ratio, high optical efficiency, low heat loss, and strong environmental adaptability. It can be used as a distributed energy source or integrated into a large-scale thermal power station, which is very suitable for development and deployment i...
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IPC IPC(8): F03G6/06F24J2/34F24J2/08
CPCF03G6/065Y02E10/46
Inventor 王跃社邓倩胡甜魏进家
Owner XI AN JIAOTONG UNIV