Simulation of urban shading to mitigate heat islands in irregularly dense areas

Authors

DOI:

https://doi.org/10.46421/entac.v20i1.6275

Keywords:

Microclimate simulation, Human thermal comfort, Heatwaves, Urban Shading, Recycled material

Abstract

Heat islands are intensified by climate change, leading to episodes of heatwaves in cities. Faced with this issue, within the context of the city of Belo Horizonte, this study aimed to improve thermal comfort conditions on a narrow street with irregular density by designing urban shading structures with different inclinations, made from PET (Polyethylene Terephthalate) plastic bottles, a recycling material from local residents. The shading structures were studied based on local ventilation conditions and solar incidence. Simulations were conducted using Rhinoceros 6 and Rayman PRO software to assess the potential for heat reduction. The results revealed a significant decrease in solar radiation at the study site, leading to a reduction in the thermal index PET ranging from 5.4°C to 11.3°C, highlighting the potential for improving human thermal comfort and reducing physiological stress. Therefore, it is concluded that the use of urban shading structures can be a sustainable, technically and economically viable solution, proving to be efficient in mitigating heat islands in densely populated urban areas.

Author Biographies

Bruna Barros Rodrigues, Universidade Federal de Minas Gerais (UFMG)

Studying Architecture and Urbanism at the Federal University of Minas Gerais (Belo Horizonte - MG, Brazil).

Julia Villanova Valadares, Universidade Federal de Minas Gerais (UFMG)

Studying Architecture and Urbanism at the Federal University of Minas Gerais (Belo Horizonte - MG, Brazil).

Larissa Arêdes Monteiro, Universidade Federal de Minas Gerais (UFMG)

Master's degree holder and doctoral candidate in the Built Environment and Sustainable Heritage Program at The Federal University of Minas Gerais (Belo Horizonte - MG, Brazil).

Grace Cristina Roel Gutierrez , Universidade Federal de Minas Gerais (UFMG)

Mater's degree holder in Civil Engineering from the University of Campinas. Professor at the School of Architecture of the Federal University of Minas Gerais (Belo Horizonte - MG, Brazil).

Eleonora Sad de Assis, Universidade Federal de Minas Gerais (UFMG)

Postdoctoral researcher in Micrometeorology from the University of São Paulo. Associate professor at the School of Architecture of the Federal University of Minas Gerais (Belo Horizonte - MG, Brazil).

Rafael Silva Brandão, Universidade Federal de São João Del-Rei

PhD in Architecture and Urbanism from the University of São Paulo. Associate professor at the Federal University of São João Del-Rei (São João Del-Rei - MG, Brazil).

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Published

2024-10-07

How to Cite

RODRIGUES, Bruna Barros; VALADARES, Julia Villanova; MONTEIRO, Larissa Arêdes; GUTIERREZ , Grace Cristina Roel; ASSIS, Eleonora Sad de; BRANDÃO, Rafael Silva. Simulation of urban shading to mitigate heat islands in irregularly dense areas. In: NATIONAL MEETING OF BUILT ENVIRONMENT TECHNOLOGY, 20., 2024. Anais [...]. Porto Alegre: ANTAC, 2024. p. 1–11. DOI: 10.46421/entac.v20i1.6275. Disponível em: https://eventos.antac.org.br/index.php/entac/article/view/6275. Acesso em: 23 nov. 2024.

Issue

Section

Conforto Ambiental e Eficiência Energética

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