3616 ビームダウン集光システム用液膜流下型溶融塩レシーバの開発(S55 再生可能エネルギー)

概要

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A novel receiver concept is established for a solar thermal concentrating system. The receiver enables solar heat concentrated by beam-down method to be transferred to heat transfer medium (molten salt) efficiently. Conventional receiver is an indirect type of heat exchanger in which solar heat is transferred to the molten salt through the wall of a pipe containing the molten salt. To the contrary, the present receiver is of a direct type where concentrated solar beam directly heats the molten salt forming a liquid film gravity flow along inner surface of a cavity container. Theoretical expression for the thickness of the liquid film is derived and examined by the simulated experiment using water. Using the expression, surface temperature of the liquid film is evaluated to a typical heat flux from the concentrated solar beam transferred from the surface, which results in much lower value than the temperature limitation where chemical decomposition of the molten salt is anticipated.
社団法人日本機械学会の論文
2005-09-18