Inter-building assessment of urban heat island mitigation strategies: Field tests and numerical modelling in a simplified-geometry experimental set-up
Large scale mitigation strategies showed to represent promising solutions for enhancing liveability in dense urban contexts. Therefore, most of the researches are focused on assessing the effect of high albedo surfaces and greenery. The paper deals with a numerical and experimental analysis of these...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2020 |
| País: | España |
| Recursos: | Consejo General de la Arquitectura Técnica de España (CGATE) |
| Repositório: | RIARTE |
| OAI Identifier: | oai:www.riarte.es:20.500.12251/1930 |
| Acesso em linha: | http://hdl.handle.net/20.500.12251/1930 https://doi.org/10.1016/j.renene.2019.09.082 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Cubiertas verdes Fachada verde Isla de calor -efecto- Radiación solar Monitorización de edificios Países mediterráneos Microclima de Proximidad (MP) Clima Zonas urbanas Evotranspiración 3305.01 Diseño Arquitectónico 3305.90 Transmisión de Calor en la Edificación 3311.01 Tecnología de la Automatización 3311.16 Instrumentos de Medida de la Temperatura 2502.02 Climatología Aplicada 2508.15 Transpiración 3328.26 Refrigeración |
| Resumo: | Large scale mitigation strategies showed to represent promising solutions for enhancing liveability in dense urban contexts. Therefore, most of the researches are focused on assessing the effect of high albedo surfaces and greenery. The paper deals with a numerical and experimental analysis of these evapotranspiration and high-reflectance surfaces in a full scale experimental set-up where more than 20 cubicles are monitored in a Mediterranean continental climate. The experimental set-up itself covers an intermediate inter-building perspective between the lab scale and the real urban contexts, which compromises the possibility to generalize final results. This scale is able to better control geometry of area, but allows real microclimate monitoring and calibration of CFD models. Starting from a validated model, this study simulated alternative scenarios with gradually varying the presence of common mitigation strategies with the scope to evaluate their effect to this aim. Results showed that high albedo solutions best mitigate summer overheating reducing the air temperature, while greenery was more effective in the densest configurations with low albedo envelopes, showing how geometry related variables may play a key role in determining the optima configurations of microclimate mitigation strategies, also important for the best exploitation of renewables in the built environment. © 2019 Elsevier Ltd |
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