Fluidized bed air heat absorber used for solar thermal power generation

Abstract

A fluidized bed air heat absorber used for solar thermal power generation comprises a heat absorber cavity (1), solid particles (2), a light-pervious window (3), an air inlet (5), an air distributing plate (7), a baffle (8) and an air outlet (10). The heat absorber cavity is barrel-shaped or square, the solid particles (2) are stored in the heat absorber cavity, the light-pervious window (9) is located on the side, facing shooting of light-collecting radiant energy flux (4), of the heat absorber cavity (1), the air inlet (5) is located in the bottom of the heat absorber cavity (1), the air distributing plate (7) is fixed to the inside of the heat absorber cavity (1) and above the air inlet (5), the baffle (8) is fixed to the inside of the heat absorber cavity (1), and the air outlet (10) is located in the top of the heat absorber cavity (1). All portions of the heat absorber except the light-pervious window are coated with high-temperature-resistant and heat-preserving layers.

Description

technical field [0001] The invention relates to a tower type air heat absorber for solar thermal power generation. Background technique [0002] Tower-type solar thermal power generation is to reflect solar radiation to the heat absorber placed on the tower through multiple heliostats that track the movement of the sun to obtain high-temperature heat transfer fluid. The high-temperature heat transfer fluid directly or indirectly passes through the power generation system of the thermal cycle. It mainly includes heliostat, heat absorber support tower, heat absorber, heat storage and generator set, etc. The heat absorber is the core device of the light-to-heat conversion of the tower system, and its performance directly affects the system efficiency. According to the difference of the heat transfer fluid in the heat absorber, the tower solar thermal power plants currently in operation and under development in the world mainly include water / steam, molten salt and air. The air...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fluidized bed air heat absorber for solar thermal power generation, to overcome the inhomogeneity and instability of the air heat absorber in the existing solar thermal power station due to the high density of solar concentrated energy flow , resulting in thermal stress damage to the heat absorber material, poor flow stability and low reliability

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