| Project/Area Number |
04650541
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
建築環境・環境工学
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
SHIOTSUKI Yoshitaka Kyushu University Interdisplinary Graduate School of Engineering Science, Research Associate, 総合理工学研究科, 助手 (40150487)
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| Co-Investigator(Kenkyū-buntansha) |
HAYASHI Testuro Kyushu University Interdisplinary Graduate School of Engineering Science, Associ, 総合理工学研究科, 助教授 (40150502)
KATAYAMA Tadahiko Kyushu University Interdisplinary Graduate School of Engineering Science, Profes, 総合理工学研究科, 教授 (80017938)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1993: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Heat balance of the earth surface / Long-term observation / Solar reflectivity / Earth surface temperature / Underground temperature / Electric resistance of the soil / Simulation on thermal performance of the earth / 水分拡散係数 / 土中含水率 / 伝熱シュミレーション / アルベド / 蒸発潜熱 / 通年データ |
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| Research Abstract |
Thermal performance of the gournd-surface and underground has been observed since September 1987. The surface is covered with the circles of 4m diameter and three types of pavement, lawn and bare soil. The pavements are asphalt, permeable asphalt and concrete. The fluctuations of surface and underfround temperatures for four years are shown in this report. The annual underground temperatures fluctuate within 20ﾟC range at 80 cm depth. The correlation between the diurnal value of cumulative solar radiation and surface temperature range is significant on the covering materials without tranpiration, the asphalt and the concrete pavement. The surface temperature difference between the pavement of asphalt and permeable asphalt is negligible. Annual ground temperatures and weather condition data are made from the observed four years data and examined to discuss the thermal characteristics on five kinds of the covering materials.
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