AN EXPERIMENTAL STUDY ON THE COMPONENTAL SHADING COEFFICIENT OF SUNLIT WINDOWS WITH SELECTIVE TRANSPARENT BLIND

INANUMA Minoru, ISHINO Hisaya

doi:10.3130/aija.64.65_1

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Other Title

選択透過性のあるブラインドの日射遮蔽係数の放射成分・対流成分分離に関する実験的研究
センタクトウカセイノアルブラインドノニッシャシャヘイケイスウノホウシャセイブンタイリュウセイブンブンリニカンスルジッケンテキケンキュウ

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Abstract

To avoid solar heat gain from windows, it is desirable that energy in the visible parts of the electromagnetic spectrum can be permitted to pass while as much as possible of any remaining solar radiation is blocked. Because blinds heated by sunlight can radiate heat into a room, blinds should basically have a highly reflective outside surface and an inside surface of low emissivity. In order to evaluate solar heat gain through windows with some blinds, I developed an experimental apparatus. Measurements made with this apparatus showed that solar heat gain from glazing with the new type of blind installed was nearly the same as solar heat gain from glazing with a conventional ivory white one. The transparency of the new type of blind was fairy good. The new type of blind transmitted 180 % of the short wave radiation compared with by the ivory white one, but only 60 % of the long wave radiation transmitted by the ivory white blind. The totals of short and long wave radiation transmitted were about the same for both blinds. Measured SC of a conventional ivory white venetian blind is 0.49 and measured SC of the Selective Transparent blind RB is 0.52.

Journal

Journal of Architecture and Planning (Transactions of AIJ)

Journal of Architecture and Planning (Transactions of AIJ) 64 (517), 65-71, 1999

Architectural Institute of Japan

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