QUANTITATIVE EVALUATION OF MITIGATION EFFECT FOR THERMAL LOAD OF SOLAR RADIATION THROUGH THE GLASS WINDOW BY WALL GREENING

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  • TAKAYAMA Naru
    Postdoctoral Fellow, Dept. of Biological and Environmental Sciences, Faculty of Agriculture, Yamaguchi University, Dr. Agriculture
  • YOSHIKOSHI Hisashi
    Postdoctoral Fellow, Dept. of Biological and Environmental Sciences, Faculty of Agriculture, Yamaguchi University, Dr. Agriculture
  • YAMAMOTO Haruhiko
    Prof., Dept. of Biological and Environmental Sciences, Faculty of Agriculture, Yamaguchi University, Dr. Agriculture
  • IWAYA Kiyoshi
    Postdoctoral Fellow, Dept. of Biological and Environmental Sciences, Faculty of Agriculture, Yamaguchi University, Dr. Agriculture
  • HARADA Yoko
    The United Graduate School of Agricultural Sciences, Tottori University, M. Agriculture
  • YAMASAKI Toshiaki
    The United Graduate School of Agricultural Sciences, Tottori University, M. Agriculture
  • TATEISHI Yoshinari
    Graduate School of Agriculture, Yamaguchi University

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Other Title
  • 蔓植物を使った夏季の壁面緑化による日傘効果とガラス窓日射熱負荷軽減量の算定
  • ツルショクブツ オ ツカッタ カキ ノ ヘキメン リョッカ ニ ヨル ヒガサ コウカ ト ガラス マド ニッシャ ネツフカ ケイゲンリョウ ノ サンテイ

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In this study, the wall greening by vine with a simple net was constructed on the west side wall. For the purpose of quantitative evaluation for mitigation effect of thermal load by using wall greening, the model to estimate the solar radiation through the glass window was discussed. Estimated cumulative thermal load of solar radiation was corresponding to observed value. The mean error of transmissivity estimation every two hours from 9 AM to 5 PM was 0.90%, 0.89%, 2.02% and 3.17%, respectively. Our model tended to overestimate the sun-shading effect by wall greening from 3PM to 5PM in sparsity leaf condition of which the LAI was under 1.0. The relationship between the LAI of greening wall and the mean of solar radiation transmissivity through the window has a negative correlation. Each same time period, observed mean of solar radiation transmissivity through the window was reduced 4.40%, 4.15%, 6.53% and 10.13%, respectively with increase of LAI per unit.

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