DUAL-CAVITY TYPE HEAT COLLECTION AND ENERGY STORAGE METHOD OF SOLAR BY METALLIC OXIDE PARTICLE AND DEVICE THEREOF

摘要

A dual-cavity type heat collection and energy storage method of solar by metallic oxide particles and a device thereof. Focused sunlight is incident to a light suction cavity (1) of a dual-cavity type heat collection reactor to heat a separating plate surface (3) and preheat the metallic oxide particles; the preheated metallic oxide particles enter into a reaction cavity (5); the metallic oxide particles are heated and reduced with increasing temperature to release oxygen; the released oxygen is output through a gas outlet (10) of the reaction cavity; the reduced metallic oxide particles are output through a particle outlet (8) of the reaction cavity, and enter into a reduced particle storage box (7), and then enter into an oxidation heat exchanger (12) to react with the oxygen from the gas outlet (10) of the reaction cavity to release the stored chemical energy; the chemical energy is transferred to a heated working substance; the oxidized metallic oxide particles enter into an oxidized particles storage box (15) and again enter into a light suction cavity particle inlet (2) through a particle conveying device (6); furthermore, air is also introduced from the environment so as to control the gas flow of the reactor and the reaction rate of the oxidation heat exchanger (12); the incoming air exchanges heat with the residual gas in the oxidation heat exchanger (12) in advance to improve the efficiency.