Positive displacement air thermal absorber with rotary heat absorption body

Abstract

The invention discloses a positive displacement air thermal absorber with a rotary heat absorption body. A thermal absorber piece comprises a plurality of rotary heat absorption rods (1); each heat absorption rod (1) comprises a plurality of heat absorption cylinders (11) and a rotating shaft (12); the heat absorption cylinders (11) are hollow concentric cylindrical bodies, and are integrally made of silicon carbide foam ceramic; clamping grooves (13) are formed in the inner walls of the heat absorption cylinders (11); the rotating shaft (12) is cylindrical; convexes (14) are arranged in the exterior of the rotating shaft (12); the clamping grooves (13) are in close fit with the convexes (14); the rotating shaft (12) is integrally made of compact high-temperature resistance ceramic or heat-resistant alloy steel; the axis of the rotating shaft (12) is reclosed with the axes of the heat absorption cylinders (11); the heat absorption cylinders (11) are connected with the exterior of the rotating shaft (12) in a sleeving manner. The positive displacement air thermal absorber can acquire high-temperature air of which the temperature range is 700 DEG C-1300 DEG C, and the pressure is normal or higher than 1MPa, accumulates heat utilizing sensible heat of the air thermal absorber at the same time, and can be used for a cavity type non-pressure or non-pressure air thermal absorber, and an external cylindrical non-pressure air thermal absorber.

Description

technical field [0001] The invention relates to an air heat absorber for a solar thermal power station, in particular to a volumetric air heat absorber. 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 tower-type solar thermal power generation system is to use many heliostats to reflect solar radiation to the solar heat absorber 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 thermal absorber is the core component of the tower solar thermal power generation system. A lot of research has been done on this t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming that the heat-absorbing 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

Images