Solid-particle air heat absorber used for solar thermal power plant

Abstract

The invention provides a solid-particle air heat absorber used for a solar thermal power plant; the side of an absorber cavity (1) facing the projection of light-concentrated radiation energy flow (14) is provided with a light-transmitting window (3); sold particles (9) flow in the absorber cavity (1); and the connections respectively between a main shaft (7) and the two ends of the absorber cavity (1) are sealed; a stirring blade (2) is arranged on the main shaft (7) and is rigidly connected with the main shaft (7); an air inlet (13) is arranged on the bottom part of the side surface of the absorber cavity (1), and the connection between the air inlet and the absorber cavity (1) is sealed. An air outlet (6) is arranged on the top part of the absorber cavity (1), and the connection between the air outlet (6) and the absorber cavity (1) is sealed. A feed port (4) is arranged on the top part or the side surface of the heat absorber, and the connection between the feed port and the absorber cavity (1) is sealed. A discharge port (10) is arranged on the bottom part of the heat absorber, and the connection between the discharge port and the absorber cavity (1) is sealed. The solid-particle air heat absorber can obtain the air whose temperature is from 700 DEG C to 1600 DEG C and whose normal pressure or the pressure is higher than 1MPa.

Description

technical field [0001] The invention relates to a tower type air heat absorber for solar thermal power generation. Background technique [0002] The high level of economic development is inseparable from energy support. With the excessive use of natural resources, fossil energy is in serious shortage or even on the verge of exhaustion; problems such as environmental degradation caused by large-scale use are becoming more and more serious. Therefore, the development of solar energy is of great significance for alleviating energy shortage and protecting the environment. [0003] Concentrating solar thermal power generation technology (CSP) is to converge solar energy to heat the heat transfer fluid, so as to convert the solar energy into heat energy of the heat transfer fluid, and generate electricity through thermodynamic cycle processes such as water vapor. Tower-type solar thermal power generation technology has been vigorously developed in recent years because it can achi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the air heat absorber in the existing solar thermal power station: due to the high flow density of solar concentrated energy and its inhomogeneity and instability, the thermal stress of the heat absorber material is damaged and the air flow is stable Poor performance and low reliability

Provide a rotary stirring solid particle air heat absorber

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