A refractory selective solar absorber for high performance thermochemical steam reforming
作者： Dongyue Jiang , Wenming Yang , Aikun Tang
DOI: 10.1016/J.APENERGY.2016.02.121
关键词: Selective surface 、 Solar energy 、 Radiant energy 、 Forensic engineering 、 Thin film 、 Operating temperature 、 Optoelectronics 、 Steam reforming 、 Thermal 、 Thermal radiation 、 Materials science
摘要: Abstract The production of H2 through steam reforming involves intensive energy consumption. Concentrated solar could be employed for the endothermic reaction in reformer to produce H2. However, at high operating temperatures, absorber has huge radiation heat loss ambient as is proportional fourth power surface temperature. In order avoid large and obtain higher temperature, here we present a 2D photonic crystal (PhC) selective absorber. made from titanium nitride (TiN) thin film. On top TiN film, nano cavity array structure Al2O3 coating are deposited. absorptivity measured room temperature performance predicted. fabricated thermal annealed 800 °C two hours proves its stability. By comparing reformers with different absorbers (selective blackbody absorber), shows superior results including C3H8 conversion rate well rate. experimental simulation this study that PhC good candidate application production.
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