Climatic performance of urban textures: Analysis tools for a Mediterranean urban context

Salvati, Agnese; Monti, Paolo; Roura, Helena Coch; Cecere, Carlo

doi:10.1016/j.enbuild.2018.12.024

Cited by 85 publications

(30 citation statements)

References 90 publications

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“…In this sense, the UWG model is versatile and compatible with building energy simulators such as the EnegyPlus because their databases have an *epw extension. As demonstrated by several authors, this information allows a greater veracity and adjustment of studies on a building´s thermal behavior in an urban environment, as on the effect of the heat island in the construction of building energy consumption profiles Salvati et al, 2019;Sola et al, 2018). The UWG model has a great capacity to sensitively predict the results of the application of different mitigation strategies on the surface temperatures of the elements of the urban-building envelopes (walls, roofs and road).…”

Section: Discussionmentioning

confidence: 99%

“…Recent research has used the UWG in data from Basel (Switzerland), Toulouse (France) and Singa-pore, showing an average error of about 1K (Bueno et al, 2013a;Bueno et al, 2014). The model calculates the hourly air temperature in the urban canyon according to a parametric description of the urban area (Salvati et al, 2019). This compared the UWG model predictions with real observations at different urban sites in Rome and Barcelona.…”

Section: Introductionmentioning

confidence: 99%

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Thermal performance of the Urban Weather Generator model as a tool for planning sustainable urban development

Alchapar¹,

Pezzuto²,

Erica³

et al. 2019

Geographica Pannonica

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The research aims at assessing the sensitivity of the Urban Weather Generator v4.1 to the application of different mitigation strategies for the urban heat island under two climatic contexts: desert climate (Mendoza city) and tropical climate (Campinas city). Twenty-four scenarios that modify their morphologic and material parameters were simulated. The results showed that the temperature of the air predicted by the UWG model is not significantly sensitive to the changes produced by the application of different strategies in urban contexts of equal H/W aspect; however, it does show sensitivity to the variation of the H/W aspect (ΔTa ≤ 1.3°C) and the climate context. The highest performance of the UWG model was recorded on the surface temperatures of the urban envelope, with a maximum difference in surface temperature was recorded on high aspect ratio with high albedo in arid climate, (Ts of roof = 28°C).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal performance of the Urban Weather Generator model as a tool for planning sustainable urban development

Alchapar¹,

Pezzuto²,

Erica³

et al. 2019

Geographica Pannonica

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“…Urban canopies are heterogeneous in nature and have geometrical and thermal properties that play a fundamental role in air quality, human comfort, and energy consumption (Fernando 2010;Barlow 2014;Buccolieri et al 2015;Salvati et al 2019). Owing to the presence of street canyons, squares, intersections, and buildings of varying heights, estimation of air pollutant concentration in the urban environment has proved to be a difficult task to achieve (e.g., Ben Salem et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Turbulent Schmidt Number Measurements Over Three-Dimensional Cubic Arrays

Bernardino

Monti

Leuzzi

et al. 2019

Boundary-Layer Meteorol

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We present turbulent Schmidt number ( ) estimations above threedimensional urban canopies, where is a property of the flow defined as the ratio of the eddy diffusivity of momentum ( ) to the eddy diffusivity of mass ( ). Despite the fact that modelling is of great interest, inter alia, for pollutant dispersion simulations conducted via computational fluid dynamics, no universal value is known. Simultaneous measurements of fluid velocity and mass concentration are carried out in a water channel for three staggered arrays of cubical obstacles corresponding to isolated flow, wake-interference, and skimming-flow regimes. A passive tracer is released from a continuous point source located at a height 1.67 , where H is the obstacle height. The results show an increase of with height above the canopy for all three arrays, with values at 2 ( 0.6) about double compared to that at . The observed agrees well with that modelled by using a simple formulation for based on expressions for and published in previous studies. Comparisons with other models found in the literature are also presented and discussed.

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“…These effects have contrasting impacts on buildings' cooling and heating demand. Therefore, the resulting net energy impact of urban environments depends on the climate type (Palme, Inostroza, and Salvati 2018), the density of urban context (Salvati, Coch, and Morganti 2017;Salvati et al 2019) and the function, form and construction characteristics of buildings (Futcher, Kershaw, and Mills 2013;Futcher, Mills, and Emmanuel 2018;.…”

Section: Introductionmentioning

confidence: 99%

Built form, urban climate and building energy modelling: case-studies in Rome and Antofagasta

Salvati

Palme

Chiesa

et al. 2020

Journal of Building Performance Simulation

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The energy performance of urban buildings is affected by multiple climate phenomena such as heat island intensity, wind flow, solar obstructions and infrared radiation exchange in urban canyons, but a modelling procedure to account for all of them in building performance simulation is still missing. This paper contributes to fill this gap by describing a chain strategy to model urban boundary conditions suitable for annual simulations using dynamic thermal simulation tools. The methodology brings together existing physical and empirical climate models and it is applied to 10 case studies in Rome (Italy) and Antofagasta (Chile). The results show that urban climate varies significantly across a city depending on the density of urban texture and its impact on the annual energy demand depends on the region's climate. The urban shadows are crucial in cooling-dominated climates (Antofagasta) while the urban heat island intensity is more important in temperate climates (Rome).

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Climatic performance of urban textures: Analysis tools for a Mediterranean urban context

Cited by 85 publications

References 90 publications

Thermal performance of the Urban Weather Generator model as a tool for planning sustainable urban development

Thermal performance of the Urban Weather Generator model as a tool for planning sustainable urban development

Turbulent Schmidt Number Measurements Over Three-Dimensional Cubic Arrays

Built form, urban climate and building energy modelling: case-studies in Rome and Antofagasta

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