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http://dx.doi.org/10.9715/KILA.2022.50.5.080

Analysis of Thermal Environment Improving Effects of Green Curtain in Summer  

Lee, Sunyoung (Lab. of Landscape Architecture, Graduate School of Horticultural Science, College of Applied Life Sciences, Jeju National University)
Jo, Sangman (Lab. of Landscape Architecture, Graduate School of Horticultural Science, College of Applied Life Sciences, Jeju National University)
Park, Sookuk (Lab. of Landscape Architecture, Horticultural Science, College of Applied Life Sciences, Jeju National University)
Publication Information
Journal of the Korean Institute of Landscape Architecture / v.50, no.5, 2022 , pp. 80-89 More about this Journal
Abstract
In order to solve the limitations of horizontal thermal environment improvement, this study compared the thermal environment of the indoor and outdoor of a building in summer according to the presence or absence of a green curtain, a vertical greening method. In the summer of 2021, the air temperature, relative humidity, wind speed, and shortwave and longwave radiation were measured at a central point inside a building and the grass field outside of the building to determine the human thermal sensation index, PET and UTCI. As a result, the green curtain showed an average 1.6℃ cooler air temperature during the daytime, but it did not have an effect at night. For relative humidity, it showed higher humidity indoors by an average of 5.6% and 1.0% during the daytime and at night, respectively. Wind speed was 1.4-1.8 ms-1 and 1.4-1.5 ms-1 higher outdoors on average during the daytime and at night, respectively, showing a high value outdoors regardless of whether a green curtain was installed. The green curtain showed an average indoor mean radiant temperature reduction effect of 4.7℃ during the daytime, but it did not have an effect at night. In PET and UTCI, the green curtain reduced the indoor PET by about a 1/3 level, an average of 2.1℃, and the indoor UTCI by about a 1/6 level, an average of 1.1℃, during the daytime. However, no effects appeared in PET and UTCI at night. For landscape planning, a green curtain can effectively modify the thermal environment during the daytime in summer.
Keywords
Human Thermal Sensation; Green Facade; Thermal Modification; PET; UTCI;
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Times Cited By KSCI : 4  (Citation Analysis)
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