Solar thermochemistry energy storage heat absorber and heat absorbing method thereof

Abstract

The invention discloses a solar thermochemistry energy storage heat absorber and a heat absorbing method of the heat absorber. An energy storage heat absorber body composed of a heat absorbing layer and a reaction layer is placed in a cavity, and an opening of the energy storage heat absorber body is sealed through a quartz glass window and is wrapped with a heat insulation layer. The heat absorbing method comprises the following steps that focused solar radiation is projected to the surface of the heat absorbing layer through the quartz glass window; after the focused solar radiation is absorbed by reaction gas in the heat absorbing layer and the temperature of the reaction gas rises, the reaction gas enters the reaction layer to participate in reactions under the action of a catalyst to store solar energy in reaction products. The reaction products can serve as fuel to be used for power generation of a gas turbine and can be directly used as gas fuel. Reaction gas can be evenly heated by the heat absorbing layer, and the reaction layer can be protected against local overheating through the heat absorbing layer. Because the solar energy is stored in a thermochemistry process, the reaction products can be permanently stored under room temperatures, and the solar energy can be efficiently and stably absorbed and stored. The solar thermochemistry energy storage heat absorber is compact and simple in structure, reaction fluid and the products are convenient to transport, and large-scale high-temperature solar heat utilization requirements can be met.

Description

technical field [0001] The invention relates to the research field of solar heat absorption and energy storage systems, in particular to a solar thermochemical energy storage heat absorber and a heat absorption method thereof. Background technique [0002] Fossil energy is the main energy for social development and modern industry. With the continuous exploitation of human beings, the depletion of fossil energy is inevitable, and the large amount of greenhouse gases and some toxic and harmful substances produced during its use will also threaten the global ecological environment and human beings. healthy. Therefore, the development of clean and renewable energy is the future direction of development. Solar energy is an inexhaustible renewable energy source. The development and utilization of solar energy is an important way to realize the diversification of energy supply and alleviate the increasingly serious environmental pollution problems. [0003] At present, there are...

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Problems solved by technology

Chinese patent CN2872208 proposes a cavity-type solar absorber, which mainly adopts a tubular heat-absorbing layer, which has the disadvantages of small heat exchange surface area, low heat transfer efficiency and complicated structure

Chinese patent CN102721312A proposes a solar thermochemical hybrid energy storage device and method, which uses thermochemical processes to store concentrated solar radiation and uses molten salt sensible heat storage to achieve stable and efficient storage of solar energy, but because the catalyst is directly exposed to non-uniform Under concentrated solar radiation, it is easy to cause overheating of the catalyst and uneven temperature distribution, reducing the service life of the catalyst

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