Thermochemical energy storage system

Abstract

The invention discloses a thermochemical energy storage system. The thermochemical energy storage system comprises a light focusing and tracking system, an endothermic reaction system, a first sealedstorage tank system, a second sealed storage tank system, a third sealed storage tank system, a heat releasing reaction system and a heat utilization system, wherein the light focusing and tracking system focuses and projects sunlight to the endothermic reaction system, the endothermic reaction system performs endothermic chemical reactions, gas and solid products generated by the chemical reactions of the endothermic reaction system are stored inside the third sealed storage tank system and the second sealed storage tank system correspondingly to be taken as reactants of the heat releasing reaction system, and the heat releasing reaction system performs heat releasing chemical reactions and delivers released heat to the heat utilization system and stores the products generated by the chemical reactions inside the first sealed storage tank system to be taken as the reactants of the endothermic reaction system at the same time. By means of the thermochemical energy storage system, solarphoton energy is directly supplied to heat storage material particles, the internal temperature of the heat storage material particles is distributed evenly, the heat storage material sintering resistance is improved, and the system circulation stability is improved.

Description

technical field [0001] The invention belongs to the field of solar energy storage systems, in particular to a thermochemical energy storage system that directly absorbs solar energy. Background technique [0002] With the depletion of fossil energy, the efficient use of solar energy is one of the best solutions to deal with the energy crisis and environmental degradation in the future. Solar energy has the advantages of a large amount of resources, clean use, free, and non-regional. It has important applications in the fields of energy, power, aerospace, and people's livelihood, and has become an important part of the global renewable energy development strategy. Different from photovoltaic power generation, solar thermal power generation converts solar energy into thermal energy first, and then converts the generated thermal energy into electrical energy. It has the following four advantages: 1. Stable electrical energy output, good compatibility with the grid system, and g...

AI Technical Summary

Problems solved by technology

This kind of surface heat collection has problems such as high surface temperature, many heat transfer links, and only relying on surface absorption. It has the disadvantages of large heat loss, large thermal resistance, and low efficiency.

At the same time, the surface heat collection will also cause the heat storage material to sinter on the surface of the heat collector, which will intensify the heat transfer resistance and reduce the heat storage density and efficiency.

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