Mitigation of the impacts of heat islands on energy consumption in buildings: A case study of the city of Tehran, Iran

Sedaghat, Alimohammad; Sharif, Mohammad

doi:10.1016/j.scs.2021.103435

Cited by 36 publications

(13 citation statements)

References 39 publications

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“…The mitigation strategies analyzed until now, not only affect the environmental parameters but also influence the external surface temperatures of the buildings, having results on their energy performance especially during the cooling season, as assessed also by other researchers [58]. If cool pavements in public roads lead to a rise in building external surface temperatures, trees can partially reduce them.…”

Section: Discussionmentioning

confidence: 98%

Experimentation of Mitigation Strategies to Contrast the Urban Heat Island Effect: A Case Study of an Industrial District in Italy to Implement Environmental Codes

et al. 2022

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The European goals to reduce CO2 emissions by up to 40% by 2030 and reach carbon neutrality by2050 cannot ignore the building sector, that accounts for 27% of global greenhouse gas emissions. In the context of the sustainable development goals, it is a key point to consider the reduction of the heat island effect in the urban environment. Considering this background and the proven absence of the clear promotion of urban mitigation measures, the research aims at investigating the influence on several micro-climate parameters of different retrofitting strategies at the building level (green façades) and the cooling strategies at the urban scale (e.g., cool pavements, trees). As a case study, the application of these measures in an industrial district located in Italy is evaluated. ENVI-met software was adopted to perform the outdoor environmental simulations, in order to assess the effectiveness of the mitigation strategies proposed, considering both the whole district and a portion, focusing on urban canyons. Cool pavements proved to be the most promising strategy to both reduce the air temperature and increase the relative humidity. Slighter effects on environmental conditions can be achieved by planting trees and installing green walls that, by contrast, significantly affect the mean radiant temperature and buildings’ surface temperatures, respectively.

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Section: Discussionmentioning

confidence: 98%

Experimentation of Mitigation Strategies to Contrast the Urban Heat Island Effect: A Case Study of an Industrial District in Italy to Implement Environmental Codes

et al. 2022

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“…In the long run, continuous urban expansion, the conversion of open land to built-up areas, and increased energy consumption have diversified the microclimates of cities. One of the best-known effects of the influence of the urban environment on its climate is the 'urban heat island' (UHI), which refers to increased temperatures over an urban area as compared to the surrounded rural areas (Kim, 1992;Kumari et al, 2021;Sedaghat and Sharif, 2022). Higher urban heat is mainly caused by anthropogenic heat released from vehicles, power plants, air conditioners, and other heat sources, and by the heat stored and re-radiated by massive and complex urban structures (Rizwan et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Estimating urban vulnerability to flood and heat hazards: A case study in the municipality of Thessaloniki, Greece

Lazaridis¹,

Latinopoulos²

2023

ESR&P

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Continuous urban expansion, the conversion of open land to built-up areas and increased energy consumption have diversified the microclimates of cities. These phenomena combined with climate change hazards increase the vulnerability of cities, in a spatially heterogeneous way. Therefore, cities should become more resilient to those threats, by identifying and prioritising highly vulnerable areas. The main purpose of this study is to develop a spatial-based approach to assess the vulnerability of climate-related hazards in the urban environment of Thessaloniki (Greece). In this context, spatial and temporal patterns of land surface temperature were estimated through the calculation of various spectral indices, to conduct an analytical Urban Heat Island vulnerability assessment. Furthermore, the FloodMap-Pro application was used to identify coastal areas that are vulnerable to sea level rise, while historical floods were digitised in order to identify potential urban (flash) flood zones. The most important outcome of this paper is the creation of an integrated spatial vulnerability index, which identifies the urban areas that are prone to all these hazards. The final vulnerability map illustrates how the city of Thessaloniki is exposed to several climate-related hazards and that many areas/neighbourhoods are prone to one or more risk factors.

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“…The approach to the urban design can follow two main directions: a site-specific approach and a parametric one. The first one allows to investigate complex built environment (see, e.g., Ouyang et al, 2022 [7], Sedagath and Sharif, 2022 [8], Piedra et al, 2020 [9], Lee et al, 2016 [10]), leading to realistic results on the specific case, but with less generalizable design advices. On the opposite, in the second approach, the parametric investigation, simple general cases, such single buildings (e.g., Di Bernardino et al, 2017 [11]) or the classical urban canyons (see, among the others, Oke, 1988 [12] for a classification), are investigated via numerical simulations (e.g.…”

Section: Introductionmentioning

confidence: 99%

Ventilation in a group of courtyard buildings

Ferrari

2022

EPJ Web Conf.

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In the contemporary urban planning, the outdoor comfort is more and more relevant. As a matter of fact, in some Nations the microclimate design, and so, among the others, a quantification of the outdoor comfort is already compulsory, while in many others it is recommended. Various methods to quantify the outdoor comfort can be adopted (e.g., among the others, the PMV-Predicted Mean Vote, or the PET-Physiological Equivalent Temperature), but in every formulation the quantification of the wind velocity, otherwise referred to as ventilation, close to the buildings under study is needed. In this paper, the ventilation inside and outside a group of courtyard buildings is studied via numerical simulations with ENVI-met. ENVI-met is a three-dimensional microclimate model able to simulate the ventilation in an urban environment and the interaction of air flows with surfaces of different materials, with plants and with other typical elements of the built environment in a given climate. Results highlight the relevance of the mutual influence of buildings and of their dimensions in modelling the ventilation inside and outside a courtyard.

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Mitigation of the impacts of heat islands on energy consumption in buildings: A case study of the city of Tehran, Iran

Cited by 36 publications

References 39 publications

Experimentation of Mitigation Strategies to Contrast the Urban Heat Island Effect: A Case Study of an Industrial District in Italy to Implement Environmental Codes

Experimentation of Mitigation Strategies to Contrast the Urban Heat Island Effect: A Case Study of an Industrial District in Italy to Implement Environmental Codes

Estimating urban vulnerability to flood and heat hazards: A case study in the municipality of Thessaloniki, Greece

Ventilation in a group of courtyard buildings

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