As urban overheating is increasing, there is a strong public interest towards mitigation strategies to enhance comfortable urban spaces, for their role in supporting urban metabolism and social life. The study presents an assessment of the existing thermal comfort and usage of San Silvestro Square in Rome during the summer, and performs the simulation of cooling strategies scenarios, to understand their mitigation potential for renovation projects. The first stage concerns a field analysis of the thermal and radiative environment on the 1st and 2nd of August 2014, including meteorological measurements and unobtrusive observations, to understand how people experience and respond to extreme microclimate conditions. In the second stage, the research proposes scenario simulations on the same day to examine the influence of cool colored materials, trees and vegetative surfaces on thermal comfort. The thermal comfort assessment was based on Physiologically Equivalent Temperature (PET), whereas microclimatic simulations were conducted with CFD calculations (ENVImet v.4.3.1). The first stage shows a strong relationship between lower PET values and attendance rate, depending on daily shading patterns. The second stage shows a relevant improvement of thermal comfort, with PET values of 12 °C comparing to the no-intervention scenario, associated with a combination of cool materials and trees.

Assessment and mitigation strategies to counteract overheating in urban historical areas in Rome / Laureti, Flavia; Martinelli, Letizia; Battisti, Alessandra. - In: CLIMATE. - ISSN 2225-1154. - 6:1(2018), pp. 1-27. [10.3390/cli6010018]

Assessment and mitigation strategies to counteract overheating in urban historical areas in Rome

Laureti, Flavia
Primo
Writing – Original Draft Preparation
;
Martinelli, Letizia
Secondo
Validation
;
Battisti, Alessandra
Ultimo
Writing – Review & Editing
2018

Abstract

As urban overheating is increasing, there is a strong public interest towards mitigation strategies to enhance comfortable urban spaces, for their role in supporting urban metabolism and social life. The study presents an assessment of the existing thermal comfort and usage of San Silvestro Square in Rome during the summer, and performs the simulation of cooling strategies scenarios, to understand their mitigation potential for renovation projects. The first stage concerns a field analysis of the thermal and radiative environment on the 1st and 2nd of August 2014, including meteorological measurements and unobtrusive observations, to understand how people experience and respond to extreme microclimate conditions. In the second stage, the research proposes scenario simulations on the same day to examine the influence of cool colored materials, trees and vegetative surfaces on thermal comfort. The thermal comfort assessment was based on Physiologically Equivalent Temperature (PET), whereas microclimatic simulations were conducted with CFD calculations (ENVImet v.4.3.1). The first stage shows a strong relationship between lower PET values and attendance rate, depending on daily shading patterns. The second stage shows a relevant improvement of thermal comfort, with PET values of 12 °C comparing to the no-intervention scenario, associated with a combination of cool materials and trees.
2018
Cool materials; Cooling technologies; Mitigation strategies; Overheating; Physiologically Equivalent Temperature; Shading; Summer heat stress; Thermal comfort; Urban open space; Atmospheric Science
01 Pubblicazione su rivista::01a Articolo in rivista
Assessment and mitigation strategies to counteract overheating in urban historical areas in Rome / Laureti, Flavia; Martinelli, Letizia; Battisti, Alessandra. - In: CLIMATE. - ISSN 2225-1154. - 6:1(2018), pp. 1-27. [10.3390/cli6010018]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1201164
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