Evaluación de estrategias de enverdecimiento vertical en clima árido. El caso de las fachadas verdes

Abstract

The thermal performance of traditional green façades (TGF) planted with perennial climbing species during the summer season in the Metropolitan Area of Mendoza, Argentina, located in an arid climate, is evaluated. For this purpose, outdoor temperatures were monitored over a
30-day period in the immediate microclimate and inside an air chamber, as well as surface temperatures outdoors and indoors, in an experimental trial. This trial comprised three masonry walls, two with TGF and one control without vegetation cover, oriented westward and isolated on their north, south and east sides; the east-facing side houses an air enclosure. Temperature reductions were found to be 3.5 °C from the ambient air at 30 cm from the wall, 6.2 °C in the indoor air chamber, 17.8 °C on the outdoor surface, 7.5 °C on the indoor surface and up to 2.0 °C variation between the TGFs with different plant species. These values demonstrate the potential of the strategy in reducing temperatures in its immediate surroundings and indoor spaces. Moreover, it is observed that the extent of these impacts depend on the type of plant structure and
are greater in arid climates compared to those reported for other climates in international literature.

Keywords:

arid zones experimental study perennial climbing species thermal behavior vertical greening systems

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