Heat-absorbing body rotary air heat absorber for solar thermal power station

Abstract

The invention relates to a heat-absorbing body rotary air heat absorber for a solar thermal power station. A silicon carbide foamed ceramic heat-absorbing body (1) is integrated from three or more of silicon carbide foamed ceramic plates, a rotation shaft (3) is a compact silicon carbide ceramic bar which is sintered with the silicon carbide foamed ceramic heat-absorbing body for forming, the rotation shaft (3) penetrates through the silicon carbide foamed ceramic heat-absorbing body or partially embedded in the silicon carbide foamed ceramic heat-absorbing body (1), the axis of the rotation shaft (3) is overlapped with the centre line of the silicon carbide foamed ceramic heat-absorbing body; the silicon carbide foamed ceramic heat-absorbing body can perform circular rotation around the rotation shaft (3), an air cavity (4) contains a radiation incoming window (2) on the sunlight incoming side and is provided with an air inlet and an air outlet which are separately used for the air to flow in or out; and the outer surface of the air cavity (4) is covered with an insulating layer. The invention can be used to obtain high temperature air in a temperature range of 700-1300 DEG C and with a pressure of normal pressure or over 1MPa, and the self-sensible heat of the air heat absorber is used for heat storage.

Description

technical field [0001] The invention relates to an air heat absorber for a solar thermal power station, in particular to an air heat absorber with a heat absorbing body rotating type. Background technique [0002] Solar energy is an inexhaustible renewable energy source. Today, as fossil fuels are decreasing year by year and the international energy situation is becoming increasingly severe, the development and utilization of solar energy is one of the important ways to realize the diversification of energy supply and ensure energy security. The basic principle of the tower thermal power generation device is to use many heliostats to reflect solar radiation to the solar receiver placed on the tower, and generate superheated steam or high-temperature air with the help of heating medium to drive the generator set to generate electricity. The high temperature solar heat absorber is the core component of the tower thermal power generation system. Many studies have been carried ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming that the heat absorber material in the existing air heat absorber is easy to be damaged under high temperature and high heat flux density, and to provide an air heat absorber that rotates and absorbs heat during the working process of the heat absorber

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