Abstract
With the rapid development of hydrogen production technology by using solar energy, the research of Solid Oxide Electrolysis Cell (SOEC) and Photovoltaic/Thermal (PV/T) system have become popular. A design scheme of hydrogen production system based on PV/T technology was proposed. The electrolytic cell combined photovoltaic panels, trough solar collectors and multiple heat exchagers to improve the overall efficiency of the hydrogen production system. The efficiency was predicted based on empirical models. The results showed that the hydrogen production efficiency of SOEC increased with increasing temperature and with decreasing current density. However, the balance between energy efficiency and hydrogen production rate of SOEC needed to be taken into account. The predicted hydrogen production efficiency of SOEC and overall system efficiency also agreed well with the results available in literature.
Highlights
The large amount of pollutants emitted by burning fossil fuels, such as soot, carbon dioxide, sulfur dioxide, and nitrogen oxides, have caused serious pollution of the ecological environment and global warming
The system is mainly composed of solid oxide electrolysis cell (SOEC), solar heat collector, photovoltaic panel and two heat exchangers
With the increase of current density, the irreversible loss increases, which leads to the decrease of energy efficiency
Summary
The large amount of pollutants emitted by burning fossil fuels, such as soot, carbon dioxide, sulfur dioxide, and nitrogen oxides, have caused serious pollution of the ecological environment and global warming. Solar energy is more popular because of its inexhaustible and environmentally friendly features. The heat energy generated by burning the same quality of hydrogen is about 3 times that of gasoline, 3.9 times that of alcohol, and 4.5 times that of coke [1]. Both solar energy and hydrogen energy are environmentally friendly and pollution-free energy. They can be linked to each other via the electricity or the heat. This study intends to propose a design scheme and to predict its performance for a hydrogen production system based on PV/T technology
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