A characteristic of an adaptive green shading for the double skin facade in a tropical climate

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Suwicha Benjaporn
Watcharin Jinwuth
Kwanchai Kaitong

Abstract

The crisis of global energy and natural resources has stimulated the requirement for higher standard in energy and environmental impacts of building façade. In this case, the Double Skin Façade (DSF), has been known as an advanced façade technology that integrated the transparency glass façade with the outstanding features in energy conservation and environmental friendly. For this reason, they were installed into several high performance buildings worldwide. However, effects from overheating in the cavity that causes of reducing their performances. In this case, using plant as a shading device within the DSF’s cavity could decrease the possibility of overheating. Therefore, the main objective of this research is focused on the application of a green shading device, in order to improve the thermal performance of the DSF in a tropical climate. Resulting from the laboratory testing to determine the green shading’s figure, which was adapted by controlling the mass ratio of Tillandsia usneoides at 1000 g/m2 of wall area. This experiment found, that the DSF specimen with controlled figure of green shading together with distributed installation covering entire the inner skin, could decrease the lowest air temperature within the cavity. Then the previous outcomes were determined to study the influences from mass of plants, which were in range of 250 to 2000 g/m2. Results showed, the 1500 g/m2 green shading performed the most effective in preventing overheating throughout the testing period. In conclusion, therefore, the green shading device with controlled figure and the mass of plant to wall ratio at 1500 g/m2 was an effective application for the DSF in a tropical climate.


 

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บทความวิจัย

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