System and method for producing hydrogen through solar photovoltaic photo-thermal high-temperature water electrolysis

Abstract

The invention discloses a system and a method for producing hydrogen through solar photovoltaic photo-thermal high-temperature water electrolysis, and belongs to the field of solar heat collection andphotovoltaic power generation water electrolysis hydrogen production. Two times of heat exchange are carried out on prepared high-temperature hydrogen and high-temperature oxygen, and the heat of high-temperature gas generated by electrolyzing water in a high-temperature electrolytic tank under a large current is fully utilized, so the efficiency of a solar water electrolysis system is optimizedand improved to a certain extent. The electrode poisoning caused by over-high temperature of the high-temperature solid oxide electrolytic tank is systematically optimized, so that the service life ofthe electrolytic tank is prolonged under the condition of ensuring the efficiency, and the economical efficiency of the solar water electrolysis system is improved. The system is coupled with photovoltaic photo-thermal and high-temperature electrolysis, solar energy is reasonably utilized for high-temperature hydrogen production, and instability caused by direct power generation of the solar energy is avoided. A current mature photothermal technology is reasonably utilized to solve the problems of low low-temperature hydrogen production efficiency, no environmental protection and the like.

Description

technical field [0001] The invention belongs to the fields of solar heat collection and electrolytic water hydrogen production by photovoltaic power generation, and relates to a solar photovoltaic photothermal high-temperature electrolytic water hydrogen production system and a hydrogen production method. Background technique [0002] With the development of human society, energy consumption in industrial production, transportation, electricity consumption, heating, etc. is increasing day by day. During the combustion of fossil fuels, a large amount of CO is emitted 2 and pollutants, leading to global warming and serious environmental pollution. Especially in recent years, PM2.5 has seriously exceeded the standard, which has greatly aroused public concern about environmental issues. The contradiction between increasing energy demand and deteriorating environment is becoming more and more acute. Therefore, people urgently need to find new clean energy sources, change the c...

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Problems solved by technology

[0005] However, the current hydrogen production system cannot meet the above requirements, which leads to the problem of low hydrogen production efficiency at low temperature cannot be solved

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