高温电解
光伏系统
制氢
火用
高压电解
太阳能电池
氢
电解
核工程
热离子发射
可用能
工艺工程
材料科学
太阳能
发电
电解槽
废物管理
化学
热力学
电气工程
光电子学
物理
工程类
电子
电极
有机化学
功率(物理)
物理化学
量子力学
电解质
作者
Hongsheng Wang,Hui Kong,Zhigang Pu,Yao Li,Xuejiao Hu
标识
DOI:10.1016/j.enconman.2020.112699
摘要
The integration of solar photovoltaic (PV) cell and high-temperature electrolysis cell to produce hydrogen is a promising means of solar energy storage and hydrogen harvesting. In this paper, a novel hydrogen production system is proposed by combining PV cell and photon-enhanced thermionic emission cell (PETE) with the solid oxide electrolysis cell (SOEC). The inlet steam of SOEC could be heated to a high temperature ranging from 800 °C to 1000 °C by the waste heat recovery of the PV cell and PETE module. The high-temperature steam and the electricity produced by PV cell and PETE module are fed into the SOEC together for H2 generation. High temperature electrolysis could decrease the Gibbs free energy required in water splitting, leading to less electricity cost at the expense of consuming more heat. PV cells can also be more efficient in a relatively low operation temperature by the waste heat recovery, and more electricity would be generated for hydrogen production. The first-law thermodynamic efficiency, solar exergy efficiency and solar-to-hydrogen efficiency (STH efficiency) of this proposed system could reach 77.05%, 55.99%, and 29.61%, respectively, which are expected to provide a theoretic basis for the research and application of convenient and efficient solar hydrogen generation.
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