2015 Fiscal Year Final Research Report
Analysis and application of cooling mechanism of urban vegetation
| Project/Area Number |
25450368
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Agricultural environmental engineering/Agricultural information engineering
|
|---|
| Research Institution | Chiba University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 熱伝達率 / パッシブ冷却 / ヒートアイランド / 壁面緑化 / 屋上緑化 / 植物モデル / 熱収支 / 都市モデル |
|---|
| Outline of Final Research Achievements |
In this study, energy exchange between air and leaves were measured and simulated. The reasons of the low temperature of vegetation is considered as not only the evaporation from the vegetation. Another important reason is high heat exchange between air and the vegetation. The temperature of leaves shows similar variation with air temperature. Heat transfer coefficients of different size of leaves were measured and the mechanism of low temperature of vegetation was simulated by using the model, Envi-met. In the measurement of heat transfer coefficients, smaller leaves show higher values although there were varieties of values. In the urban surface temperature image, tree area shows lower temperature in day time than lawn but shows higher temperature at night. This phenomena can be simulated by using the model which can calculate the energy budget of vegetative environment. These results can be used to clarify the cooling mechanism of urban vegetation.
|
| Free Research Field |
農業情報工学
|
