A Tower Solar Thermal Power Generation System Based on Semicircular Heat Collector

Abstract

The invention provides a tower type solar heat power generation system based on semicircular heat collectors, and the front and back temperature difference of heat absorbing pipes can be effectively reduced. The tower type solar heat power generation system comprises the heat collectors and a heliostat field. The heat collectors are arranged on a heat collecting tower. Each heat collector comprises a heat absorbing pipe set, wherein the heat absorbing pipe set is composed of heat absorbing pipes. The heat absorbing pipes in the heat collectors are arranged into a semicircular shape. When two or more heat collectors are arranged, the heat collectors are sequentially arranged in the height direction of the heat collecting tower and connected in series together through a main path pipeline. The main path pipeline is provided with a main path cut-off valve. Each heat collector is connected with a bypass header in parallel through a bypass pipeline, and a bypass cut-off valve is arranged oneach bypass pipeline. The heliostat field is divided into at least two semicircular annular areas. Each of the front face and the back face of the same heat collector corresponds to one semicircularannular area, and the semicircular annular areas corresponding to the different heat collectors are different. Outer glass covers are further included and are internally vacuum, and the outer glass covers wrap the heat collectors.

Description

technical field [0001] The invention relates to a tower type solar thermal power generation system based on a semicircular heat collector. Background technique [0002] Solar thermal power generation is a power generation technology that realizes the utilization of clean energy through the conversion process of "light-heat-electricity", which has far-reaching significance for human beings to solve the problems of fossil energy crisis and air pollution. Typical tower-type solar thermal power generation technology has attracted the attention of many countries in the world due to its advantages such as high concentration ratio and high parameters. [0003] For tower-type solar thermal power receivers, no matter it is the type receiving light on the outer surface of the cylinder or the type receiving light on the inner surface of the cavity, the heating surface usually adopts a tube-wall structure, that is, the heat-absorbing medium flows in the tubes, and the tubes are arranged...

AI Technical Summary

Problems solved by technology

Therefore, the heat flow distribution around the heat-absorbing tube to the sun is extremely uneven, and the heat-absorbing tube is prone to local overheating, and there is a large temperature difference between the front and rear sides. Severe deformation of the heat pipe

In severe cases, local tube wall overheating on the heating surface and temperature deviation between tubes will increase, which will affect the safe operation of the equipment

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