4-4-1 水熱分解反応器のソーラー実証試験に向けた宮崎大学における新規ビームダウン太陽集光システムの放射計測(4-4 太陽熱・水素製造,Session 4 新エネルギー)

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A two-step thermochemical water splitting cycle using non-stoichiometric cerium oxide at 800-1500℃ is one of the promising solar thermochemical hydrogen production processes. Niigata University has been developed new solar reactors using the internally circulating fluidized beds with cerium oxide particles for the thermochemical water spplitting cycle. The solar reactors need to be combined with a beam-down solar concentrating system. Niigata University, Mitaka Kohki Co. Ltd., University of Miyazaki and Miyazaki prefecture recently started an R&D joint project to demonstrate the up-scaled solar reactors on solar (50-80kWth). A new type of 100kWth beam-down solar concentraing system was built in August, 2012 at the campus of University of Miyazaki. The optical technologies of the beam-down system were provided by MITAKA KOHKI Co. Ltd. This paper describes the first results of solar flux measurement of the spot of this new Miyazaki beam down system. The solar power of the spot was larger than 70kW_<th> during three hours of daytime, exceeding 90kW_<th> around the culmination on Sep. 28, 2012. A new CPC is currently being fabricated to concentrate the solar fluxes into a 30-cm diameter circle for the reactor apertures. The solar demonstration of the reactors will start at Miyazaki beam down system from Oct. 2013.
2013-07-29