Solar energy thermochemistry hybrid energy storage device and method

Abstract

The invention provides a solar energy thermochemistry hybrid energy storage device and method. The device includes a device body, a reaction system, a thermal storage system and an input and output system, wherein under the condensation sun radiation, the reaction system and the thermal storage system are heated through the device; the reaction system absorbs the solar energy for chemical energy storage under the action of a catalyst; and the thermal storage system absorbs the sun radiation for sensible heat or phase-change heat accumulation, keeps the chemical reaction efficient and stable, and continues to perform thermochemistry energy storage in case of no sun radiation. The method specifically includes preheating process, catalyst prereduction, solar energy heat supply and reaction energy storage, thermal storage system heat supply reaction energy storage and system termination. The device and the method both provided by the invention can better satisfy the requirements for scale solar energy high-temperature thermal utilization as well as energy conservation and emission reduction, are high in energy storage density and long in aging, are efficient and stable during the energy storage, and meanwhile are lower in manufacturing cost and maintenance cost.

Description

technical field [0001] The invention relates to the field of high-temperature heat utilization of solar energy, in particular to a solar thermochemical hybrid energy storage device and method for converting solar energy into chemical energy and storing it in reaction products. Background technique [0002] Solar energy has the characteristics of rich resources, clean and pollution-free, and plays an important role in solving the energy crisis and environmental problems we are facing today. From the perspective of energy conversion methods, solar energy utilization mainly includes photoelectricity, photothermal, photochemical and other methods. As a clean energy technology with low cost and large-scale application prospects, solar energy medium and high temperature heat utilization technology is a strategic new energy technology for the sustainable development of my country's national economy. The medium and high temperature heat utilization system of solar energy is mainly ...

AI Technical Summary

Problems solved by technology

Due to the periodic change of solar radiation intensity, the chemical reaction in the reactor is coupled with the change of solar radiation intensity, and the parameters such as reaction temperature and speed are unstable, which affects the chemical reaction and energy storage efficiency.

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