Silicon carbide foam ceramic solar energy air heat-absorbing device

Abstract

A silicon carbide ceramic foam solar energy air heat absorber uses silicon carbide ceramic foam materials as solar energy absorber. The silicon carbide ceramic foam absorber is wrapped with an insulating layer (2). A radiant heat flux (3) projects onto the surface of the silicon carbide ceramic foam absorber (1) or into an artificial blackbody cavity (9) and is received by the silicon carbide ceramic foam absorber (1). Cold air (4) flows in from the side of the silicon carbide ceramic foam absorber (1) positive to the radiant heat flux (3). Hot air (5) is obtained through heat exchange of thecold air and the radiant heat flux. Or the cold air (4) flows in from the side of the silicon carbide ceramic foam absorber (1) positive to the radiant heat flux (3) or back to the radiant heat flux (3). The hot air (5) of 700 to 1300 DEG C is obtained through the heat exchange of the cold air and the radiant heat flux through a quartz window (10). The silicon carbide ceramic foam absorber (1) buries an air diversion channel (8) beforehand. The invention can effectively receive radiant heat and emit heat to the air and take advantage of self-sensible heat to store heat at the same time.

Description

technical field [0001] The invention relates to a solar air heat absorber, in particular to a silicon carbide foam ceramic solar 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. [0003] So far, there have been a variety of thermal power generation methods such as tower type, trough type, and dish type. Among them, the tower type thermal power generation device is the most competitive technical device. Its basic principle is to use many heliostats to reflect solar radiation. On the solar receiver placed on the tower, superheated steam or high-temperature air is generated by heating the working fluid, and the generator set is driven to generate ele...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of complex structure, limited high temperature use and poor air flow stability in the prior art, and provide a silicon carbide foam ceramic solar air heat absorber, which uses silicon carbide foam ceramic material as a solar absorber, The absorber is pre-embedded with air guide channels, and at the same time, it utilizes the characteristics of silicon carbide foam ceramics' own three-dimensional porous structure, high absorption rate, high temperature resistance, and high thermal conductivity, and also has the function of heat storage.

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