3615 TITECHビームダウン集光システム太陽熱利用技術の実用化(S55 再生可能エネルギー)

概要

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The Ring Type Reflector solves the problems on the mechanical integrity of central reflector against wind force, wider focus and dilution of beam concentration at receiver aperture. The power generation cost for the Beam-Down system was estimated to be 8.98 US cents/kWh. And, about half of the capital cost of 8.17 US cents/kWh of the Beam-Down is the heliostat cost, therefore the capital cost will be 5.37 US cents/kWh, when the heliostat cost is reduced by 30% (the total cost=6.19 US cents/kWh). This figure is near the cost of the fossil fuels of coal (4.38 US cents/kWh) and natural gas (4.81 US cents/kWh). The total cost of 6.19 US cents/kWh can be further reduced by 20%, when the new heliostat arrangement process of the Dual Tower Concept is applied (the number of the heliostat and tower height can be reduced). Then the total cost of the Beam-Down will become 4.90 US cents/kWh, which can be competitive with coal and natural gas. This cost is about 1/4 of the solar PV cost (16.48 US cents/kWh).
社団法人日本機械学会の論文
2005-09-18