Impact analysis of surfaces’ solar reflectance on shortwave radiation flux in urban canyons
DOI:
https://doi.org/10.46421/entac.v19i1.1985Keywords:
urban canyon, solar reflectance, shortwave radiationAbstract
Cool surfaces are one of the suggested strategies to reduce urban heating. This study aims to analyze the impact of high solar reflectance materials on shortwave radiation fluxes. The method consists of computational simulations of two scenarios with an ENVI-met validated model for Balneário Camboriú, Brazil. The results analysis in urban canyons with distinct geometries shows that the surroundings’ high solar reflectance is associated with a reduction of surface temperatures and, at the same time, with an increase in solar radiation incidence in these canyons.
References
SARRAT, C., LEMONSU, A., MASSON, V., et al. Impact of urban heat island on regional atmospheric pollution, Atmospheric Environment, v. 40, n. 10, p. 1743–1758, mar. 2006. DOI: 10.1016/j.atmosenv.2005.11.037.
SANTAMOURIS, Mat. Environmental Design of Urban Buildings: An Integrated Approach. 1. ed. London, Routledge, 2006.
AKBARI, H., KOLOKOTSA, D. "Three decades of urban heat islands and mitigation technologies research", Energy and Buildings, v. 133, p. 834–842, 1 dez. 2016. DOI: 10.1016/j.enbuild.2016.09.067.
SANTAMOURIS, M., YUN, G. Y. Recent development and research priorities on cool and super cool materials to mitigate urban heat island, Renewable Energy, v. 161, p. 792–807, 1 dez. 2020. DOI: 10.1016/j.renene.2020.07.109.
HERATH, P., THATCHER, M., JIN, H., et al. Effectiveness of urban surface characteristics as mitigation strategies for the excessive summer heat in cities, Sustainable Cities and Society, v. 72, p. 103072, 1 set. 2021. DOI: 10.1016/j.scs.2021.103072.
SANTAMOURIS, M., DING, L., FIORITO, F., et al. Passive and active cooling for the outdoor built environment – Analysis and assessment of the cooling potential of mitigation technologies using performance data from 220 large scale projects, Solar Energy, Solar Thermal Heating and Cooling. v. 154, p. 14–33, 15 set. 2017. DOI: 10.1016/j.solener.2016.12.006.
NAZARIAN, N., DUMAS, N., KLEISSL, J., et al. Effectiveness of cool walls on cooling load and urban temperature in a tropical climate, Energy and Buildings, v. 187, p. 144–162, 15 mar. 2019. DOI: 10.1016/j.enbuild.2019.01.022.
ERELL, E., PEARLMUTTER, D., BONEH, D., et al. Effect of high-albedo materials on pedestrian heat stress in urban street canyons, Urban Climate, ICUC8: The 8th International Conference on Urban Climate and the 10th Symposium on the Urban Environment. v. 10, p. 367–386, 1 dez. 2014. DOI: 10.1016/j.uclim.2013.10.005.
KOTTEK, M., GRIESER, J., BECK, C., et al. World Map of the Köppen-Geiger climate classification updated. Meteorologische Zeitschrift, p. 259–263, 10 jul. 2006. DOI: 10.1127/0941-2948/2006/0130.
BALNEÁRIO CAMBORIÚ, Prefeitura de. DWG - Mapa Geral e Zoneamento. 2010. Prefeitura de Balneário Camboriú. Disponível em: https://www.bc.sc.gov.br/arquivos/conteudo_downloads/RS2HV7KS.zip. Acesso em: 10 fev. 2021.
SKALEE, M. Construção e apropriação do espaço público: estudo do traçado urbano do Centro de Balneário Camboriú. 2008. 110 f. Dissertação (Arquitetura e Urbanismo) - Universidade Federal de Santa Catarina, Florianópolis, 2008.
LABCLIMA, Laboratório do Clima. Dados meteorológicos - Estação do Porto de Itajaí. Universidade do Vale do Itajaí. Mensagem recebida por em 29 nov. 2021.
GUSSON, C. S., DUARTE, D. H. S. Effects of Built Density and Urban Morphology on Urban Microclimate - Calibration of the Model ENVI-met V4 for the Subtropical Sao Paulo, Brazil, Procedia Engineering, Fourth International Conference on Countermeasures to Urban Heat Island, 30-31 May and 1 June 2016. v. 169, p. 2–10, 1 jan. 2016. DOI: 10.1016/j.proeng.2016.10.001.
TSOKA, S., TSIKALOUDAKI, A., THEODOSIOU, T. Analyzing the ENVI-met microclimate model’s performance and assessing cool materials and urban vegetation applications–A review, Sustainable Cities and Society, v. 43, p. 55–76, 1 nov. 2018. DOI: 10.1016/j.scs.2018.08.009.
WEBER, F. da S., MELO, A. P., MARINOSKI, D. L., et al. Desenvolvimento de um modelo equivalente de avaliação de propriedades térmicas para a elaboração de uma biblioteca de componentes construtivos brasileiros para o uso no programa EnergyPlus. Florianópolis, LabEEE, ago. 2017.
