Abstract
AbstractOutdoor thermal comfort simulation has been modeled by ENVI-met 4.4.5 to explore the applicability of selected tropical plant species (Axonopus fissifoliu) under three different tropical conditions in Sri Lanka. The selected study locations were Colombo Sethsiripaya administrative complex, Matara urban council building, and Kandy urban council building. Different thermal performances of selected three plants out of nine plant species (Desmodium triflorum, Roheo spathacea, Centella asiatica, Axonopus fissifoliu, Axonopus compressus, Elusine indica, Dieffenbachiae spp, Tectaria spp, and Bigonia spp) have been investigated for 16 weeks. Thermal performances were assessed by comparing temperatures at (a) 20 cm distance in front of the green wall, (b) substrate surface of the green wall modules, and (c) inside the green wall compared to (d) adjacent bare wall (control). Because of its high LAI, Axonopus fissifoliu had the largest coverage on the living wall (LAI = 3.20). As a result, the influence of Axanopus fissifoliu on temperature reduction was investigated by modeling a selected building in an urban microclimatic context in Sri Lanka. Axonopus fissifoliu demonstrated the highest temperature decrease (5.06 °C) when compared to other species because it covers a large extent of the wall. The simulation study of the green walls created with Axonopus fissifoliu signified a possible maximum temperature reduction of 2.07 °C, 3.29 °C, and 2.03 °C in Colombo Sethsiripaya administrative complex, Matara urban council building, and Kandy urban council building, respectively. Therefore, installing vertical greening utilizing Axonopus fissifoliu can significantly improve the cooling effect in urban cities due to their optimal LAI values and thermal performances.KeywordsENVI-metPlant thermal performancesTropical plantsMicroclimate
Published Version
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