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Inter-building assessment of urban heat island mitigation strategies: Field tests and numerical modelling in a simplified-geometry experimental set-up

handle: 10459.1/66801 , 11391/1458806 , 20.500.12251/1930
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
Zonas urbanas, Cool pavement; Energy efficiency; Green roof and façade; Inter-building effect; Microclimate mitigation; Urban heat island, Urban heat island, 2508.15 Transpiración, Microclima de Proximidad (MP), 3311.01 Tecnología de la Automatización, Inter-building effect, Paises mediterráneos, Cool pavement, 2502.02 Climatología Aplicada, Isla de calor -efecto-, 3305.01 Diseño Arquitectónico, Microclimate mitigation, Green roof and façade, 3311.16 Instrumentos de Medida de la Temperatura, Monitorización de edificios, Fachada verde, 3305.90 Transmisión de Calor en la Edificación, Energy efficiency, Países mediterráneos, Cubiertas verdes, Clima, 3328.26 Refrigeración, Radiación solar, Evotranspiración
Zonas urbanas, Cool pavement; Energy efficiency; Green roof and façade; Inter-building effect; Microclimate mitigation; Urban heat island, Urban heat island, 2508.15 Transpiración, Microclima de Proximidad (MP), 3311.01 Tecnología de la Automatización, Inter-building effect, Paises mediterráneos, Cool pavement, 2502.02 Climatología Aplicada, Isla de calor -efecto-, 3305.01 Diseño Arquitectónico, Microclimate mitigation, Green roof and façade, 3311.16 Instrumentos de Medida de la Temperatura, Monitorización de edificios, Fachada verde, 3305.90 Transmisión de Calor en la Edificación, Energy efficiency, Países mediterráneos, Cubiertas verdes, Clima, 3328.26 Refrigeración, Radiación solar, Evotranspiración
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).38 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 10% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Top 10% impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 1%
