PERFORMANCE STUDY ON SOLID OXIDE ELECTROLYTIC CELL HYDROGEN PRODUCTION SYSTEM DRIVEN BY SOLAR ENERGY

Yu Kong; Duan Liqiang; Zhu Ziqiang; Xiong Jiali; Li Zhicheng; Liu Xuguang

doi:10.19912/j.0254-0096.tynxb.2022-0328

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (6) : 536-545. DOI: 10.19912/j.0254-0096.tynxb.2022-0328

PERFORMANCE STUDY ON SOLID OXIDE ELECTROLYTIC CELL HYDROGEN PRODUCTION SYSTEM DRIVEN BY SOLAR ENERGY

Yu Kong¹, Duan Liqiang¹, Zhu Ziqiang¹, Xiong Jiali², Li Zhicheng², Liu Xuguang¹

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Abstract

Hydrogen production by electrolysis of water driven by solar energy is the best way to convert solar energy into hydrogen energy for storage. This paper proposes a hydrogen production system that uses photovoltaic and photothermal technologies to drive solid oxide electrolytic cells for high-temperature steam electrolysis. The mathematical model of each subsystem is established, and the influence of solar irradiation intensity on the performance of hydrogen production system is analyzed by selecting the meteorological parameters of summer solstice in Beijing. Finally, the energy and exergy analysis of the overall system is carried out. The results show that both the current density and the operation temperature are important factors affecting SOEC operation. In the case of the high current density, increasing the operation temperature will be beneficial to improve the electrolytic efficiency. The maximum energy and exergy efficiencies of the system after coupling solar energy can reach 19.1% and 20.3%, respectively. Exergy analysis shows that the maximum useful effort loss of the system occurs in the photoelectric conversion process, and the loss ratio is 87%. Improving the photoelectric conversion efficiency will be the key to improve the solar-hydrogen conversion efficiency.

Key words

solar energy / solid oxide / electrolytic cells / hydrogen production / solar collectors / photovoltaic

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Yu Kong, Duan Liqiang, Zhu Ziqiang, Xiong Jiali, Li Zhicheng, Liu Xuguang. PERFORMANCE STUDY ON SOLID OXIDE ELECTROLYTIC CELL HYDROGEN PRODUCTION SYSTEM DRIVEN BY SOLAR ENERGY[J]. Acta Energiae Solaris Sinica. 2022, 43(6): 536-545 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0328

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