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    Please use this identifier to cite or link to this item: https://ir.fy.edu.tw:8080/ir/handle/987654321/13613


    Title: Thermal Performance Of Different Planting Substrates And Irrigation Frequencies In Extensive Tropical Rooftop Greeneries
    Authors: Lin, Yi-Jiung;Lin, Hsien-Te
    Contributors: 輔英科技大學 環境工程與科學系
    Keywords: Extensive rooftop greenery;Planting substrate;Thermal insulation;Irrigation frequency;CAM plant;Tropical climate
    Date: 2011-02-01
    Issue Date: 2011-07-28 15:55:27 (UTC+8)
    Abstract: The need for the better use of scarce planetary resources has never been more evident than it is today. However, this need is poorly reflected in human housing. In recent years, there has been a growing realization of the importance of constructing human shelters that better conserve energy and water through appropriate insulation and architectural designs. Among the important advancements in these areas is the use of rooftop greeneries for both energy and water conservation. This paper performs an investigation into this topic within the specific climatic context of tropical regions. Long-term experimental results are provided from a four-floor building in Kaohsiung in the southern part of Taiwan. The study involves a fully monitored extensive rooftop greenery and examines four different plant substrates, three different irrigation regimes, and different types of drought-enduring plants to find the most efficient combination of all three in providing maximum heat insulation and water usage efficiency. The attenuation of solar radiation through the vegetation layer is evaluated, as well as the thermal insulation performance of the rooftop greenery structure. Among the substrates, burned sludge has the best thermal reduction percentage of heat amplitude under the roof slab surface (up to 84.4%). Irrigation twice a week has the best thermal reduction percentage of heat amplitude (91.6%). Among the plant types, Sansevieria trifasciata cv. Laurentii Compacta and Rhoeo spathaceo cv. Compacta are found to be suitable for extensive rooftop greeneries because they have the best coverage ratio and are most drought enduring.
    Relation: Building and Environment 46(2),345-355
    Appears in Collections:[環境工程與科學系] 期刊論文

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