Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An approach to urban tree daylight permeability simulation using models based on louvers
Abstract In oasis cities urban forestation shades the lower level facades of buildings. It is thus crucial to analyze the distributional patterns of sun radiation produced by trees on facades. Nevertheless, the complexity of the canopies requires simplified representations for its study through simulation techniques. On the assumption that lighting behavior of trees, as sun control elements, more closely resembles a louver system rather than other frequently used solar control systems (e.g. perforated obstruction), the present study seeks to verify which of these formal simplifications adjusts better to the real case. The methodology used in this study relies on raytrace simulation of solar control system models generated with hemispherical images. Comparisons are made between measured data of vertical illuminance (lux) in situ and those obtained through simulation for each of the models. Louvers model showed a high degree of adjustment (RMSE 9%). This study may be useful to streamline the analysis of urban trees impact in daylight availability on building facades through simulation.
Highlights Louvers model shows highest similarity to urban trees daylight behavior. Monte Carlo stochastic model is suitable for tree daylight permeability analysis. Hemispherical images as tree pattern are a simplified and highly accurate tool.
An approach to urban tree daylight permeability simulation using models based on louvers
Abstract In oasis cities urban forestation shades the lower level facades of buildings. It is thus crucial to analyze the distributional patterns of sun radiation produced by trees on facades. Nevertheless, the complexity of the canopies requires simplified representations for its study through simulation techniques. On the assumption that lighting behavior of trees, as sun control elements, more closely resembles a louver system rather than other frequently used solar control systems (e.g. perforated obstruction), the present study seeks to verify which of these formal simplifications adjusts better to the real case. The methodology used in this study relies on raytrace simulation of solar control system models generated with hemispherical images. Comparisons are made between measured data of vertical illuminance (lux) in situ and those obtained through simulation for each of the models. Louvers model showed a high degree of adjustment (RMSE 9%). This study may be useful to streamline the analysis of urban trees impact in daylight availability on building facades through simulation.
Highlights Louvers model shows highest similarity to urban trees daylight behavior. Monte Carlo stochastic model is suitable for tree daylight permeability analysis. Hemispherical images as tree pattern are a simplified and highly accurate tool.
An approach to urban tree daylight permeability simulation using models based on louvers
Villalba, Ayelén (Autor:in) / Pattini, Andrea (Autor:in) / Correa, Erica (Autor:in)
Building and Environment ; 73 ; 75-87
30.11.2013
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
An approach to urban tree daylight permeability simulation using models based on louvers
| British Library Online Contents | 2014
An approach to urban tree daylight permeability simulation using models based on louvers
| Online Contents | 2014
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