| Project/Area Number |
07455232
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Architectural environment/equipment
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
KATAYAMA Tadahisa Interdisciplinary Graduate School of Engineering Sciences KYUSHU UNIVERSITY,Professor, 大学院・総合理工学研究科, 教授 (80017938)
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| Co-Investigator(Kenkyū-buntansha) |
TANIMOTO Jyun KYUSHU UNIVERSITY Interdisciplinary Graduate School of Engineering Sciences, Rec, 大学院・総合理工学研究科, 講師 (60227238)
HAYASHI Tetuo KYUSHU UNIVERSITY Interdisciplinary Graduate School of Engineering Sciences, Ass, 大学院・総合理工学研究科, 助教授 (40150502)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥6,600,000 (Direct Cost: ¥6,600,000)
Fiscal Year 1996: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1995: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | roadside tree / foliage crown / solar shading / urban canyon / mean radiant emperature / 単木樹 / 街路 / 日射反射率 / 放射率 / 表面温度 / 重回帰式 |
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| Research Abstract |
This study examines the effects of the layouts of buildings and road side trees on solar shading on the streets, particularly on the footpath, using mean radiant temperature for the evaluation of predicted thermal environment. The basic parameters are buildings height, width of the streets, the number of trees in a row and the size of trees crown. Thermal environments on the streets are simulated assuming summer weather, grid type streets and spherical foliage crowns and using the multiple regression equation of surface temperature of foliage crown measured by infra-red camera. Calculations of mean radiant temperature are carried out on the streets of 13 layouts of buildings and roadside trees.
Roadside trees mitigate more extensive heat on the streets if the height of buildings on its both sides is lower. It is clear that the larger the number of trees and the size of foliage crowns in a row, the lower is mean radiant temperature on the streets, especially on the footpath in an urban canyon.
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