Empirical examination and theoretical estimation on solar shading effect of tsuijimatsu in Izumo Plain

Nagano Kazuo, Komatsu Mitsunori

doi:10.11227/seikisho.46.109

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Other Title

出雲平野の築地松の西日遮蔽効果に関する実測および幾何学的評価
イズモヘイヤノツイジマツノニシビシャヘイコウカニカンスルジッソクオヨビキカガクテキヒョウカ

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The purpose of this study is to evaluate empirically and theoretically the solar-shading effect of traditional pine hedges in Izumo Plain, called “tsuijimatsu”. The geometries of forty-five pine hedges were measured. The observation of the illuminances at 15 points with tsuijimatsu, 11 points with copse, and 20 points with no tsuijimatsu/copse showed little significant differences of daylight factors/shading ratio of daylight illuminances at between tsuijimatsu and copse points. Solar radiation, outdoor temperature, outdoor and indoor wall surface temperatures, and indoor air temperature at two houses with and without tsuijimatsu were also observed. The tsuijimatsu intercepted mostly the solar irradiation and lowered obviously outdoor, wall surface, and indoor temperatures. The estimations of solar irradiation passed through tsuijimatsu was in agreement with the measured value. The shading ratio of solar irradiation which was derived from the geometries of forty-five pine hedges was more than 80%.<br>

Journal

JAPANESE JOURNAL OF BIOMETEOROLOGY

JAPANESE JOURNAL OF BIOMETEOROLOGY 46 (4), 109-119, 2009

Japanese Society of Biometeorology

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