A high-temperature electrolysis water hydrogen production system coupled with solar light and heat

Abstract

A solar optothermal coupled high-temperature water electrolysis hydrogen production system comprising a heat energy supply module (20), a hydrogen production and separation module (21) and a storage module (22) which are sequentially connected; the heat energy supply module (20) comprises a light concentrating device (1), a heat collection device (2), a heat storage high-temperature heat pipe heat exchanger (3) and a heat exchanger unit (19) which are sequentially connected, and hydrogen and oxygen are separated by electrolysis after a water and hydrogen mixture in the hydrogen production and separation module (21) is heated into a steam and hydrogen mixture above 800°C. Compared with the prior art, the hydrogen production system does not need to consume fossil energy, has a more green and environmentally friendly production process, and greatly reduces the power consumption; a stable heat source is provided by the system, the problem that a photo-thermal system is not stable due to changes in the weather is solved, the availability of the system is improved, and meanwhile the electrolytic efficiency of the system is improved.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of solar energy and hydrogen energy, in particular to a high-temperature electrolytic water hydrogen production system coupled with solar light and heat. Background technique [0002] Hydrogen energy is recognized as a clean energy source and is emerging as a low-carbon and zero-carbon energy source. It is light in weight, high in calorific value, good in combustion performance, non-toxic and recyclable, and is a high-quality secondary energy source. However, an important factor restricting the large-scale commercial application of hydrogen energy is that a cheap hydrogen production technology has not yet been found. While solar energy is the most common primary energy source, the operating cost of solar thermal heating technology is very low, completely green and zero-emission, combining solar energy with hydrogen energy, and developing a cheaper hydrogen production technology is the foc...

AI Technical Summary

Problems solved by technology

[0005] Conventional solar thermal concentrating systems cannot provide stable thermal energy. As the weather changes or after sunset, the system cannot operate stably and continuously

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