Browsing by Keyword "Shading"
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Item Metodología de selección de especies de arbolado para el sombreado urbano en la parte oriental de la cornisa Cantábrica(2019) Azcarate Mutiloa, I.; Acero Alejandro, J. Á.; Arrizabalaga Ibarzabal, J.; Tecnalia Research & InnovationThe mitigation of the Urban Heat Island is one of the biggest future challenges in cities due to climate change. One of the methods to achieve the cooling of urban spaces is the attenuation of solar radiation provided by the trees. In the present article, a methodology of selection of arboreal species is proposed for the improvement of thermal comfort in urbanized areas of the eastern part of the Cantabrian coast. Starting from a pre-selection of native species, a classification of various species suitable for shading is obtained, describing its main characteristics and its possible use scope according to the typology of urban space.Item Tree layout methodology for shading pedestrian zones: Thermal comfort study in Bilbao (Northern Iberian Peninsula)(2021-09) Azcarate, Iñigo; Acero, Juan Ángel; Garmendia, Leire; Rojí, Eduardo; Tecnalia Research & InnovationThe need to reduce heat-related thermal stress calls for a reassessment of shading in outdoor urban spaces with the aim of achieving more habitable and sustainable cities. In this research, a methodology based on mathematical formulas is presented and applied to determine the most appropriate geometric properties and position of the trees to be planted in an urban canyon, based on its E-W solar orientation and the height of the buildings. The methodology relies on shading the largest possible surface area of the pedestrian zones of a canyon through the appropriate autochthonous tree species, but it also requires a thermal-comfort evaluation of tree transmissivity. The case study is validated in Bilbao, where a combination of measurement and modelling techniques (Solweig model) are used to verify suitable guidelines for urban design. The results will be of interest to architects and city planners for decision-making when integrating trees, so that urban thoroughfare development can improve thermal comfort in actual or new canyons. The methodology could be applied to other climatic regions, although some of the parameters used both for the evaluation of the heat-related critical moments and in the formulas should be adapted.