Ares Project
monitoring and analysis of natural ventilation and CO₂ dispersion in school environments using low-cost sensors
DOI:
https://doi.org/10.14244/engurbdebate.v7i1.170Keywords:
Air quality, Cross ventilation, Environmental sensors, Sick building syndromeAbstract
Project Ares develops an innovative air quality monitoring system for school environments using low-cost sensors to measure CO₂, temperature, humidity, particulate matter, and VOCs. This study analyzed natural ventilation and CO₂ dispersion in classrooms at the Passos campus of IFSULDEMINAS, correlating environmental data with occupancy and window and door openings. Using a wind direction sensor, ventilation orientation and CO₂ dispersion conditions were assessed. Air exchange rates (ACH) were estimated based on CO₂ mass balance. Results indicate that in high occupancy conditions with closed doors and windows, natural ventilation alone does not maintain safe CO₂ levels, exceeding recommended limits. The study highlights the need to combine cross ventilation with mechanical air renewal systems to ensure air quality and thermal comfort, especially considering the structural limitations common in Brazilian schools. By providing data on an open platform, Project Ares contributes to environmental awareness and promotes healthier and more sustainable school environments.
References
ALLEN, Joseph et al. How to assess classroom ventilation: 5-step guide to checking ventilation rates in classrooms. Cambridge: Harvard T.H. Chan School of Public Health. HARVARD HEALTHY BUILDINGS PROGRAM, 2020. Disponível em: <https://healthybuildings.hsph.harvard.edu/research/schools/ventilation-guide/>. Acesso em: 27 fev. 2025
ANDAMON, Mary Myla; RAJAGOPALAN, Priyadarsini; WOO, Jin. Evaluation of ventilation in Australian school classrooms using long-term indoor CO2 concentration measurements. Building and Environment, v. 237, p. 110313, jun. 2023.
ANVISA. RESOLUÇÃO-RE No 09. RESOLUÇÃO-RE No 09, DE 16 DE JANEIRO DE 2003. Disponível em: <https://antigo.anvisa.gov.br/documents/10181/2718376/RE_09_2003_.pdf>. Acesso em 24 jul. 2025..
BARBOSA, André Sarmento. Biblioteca Modbus IP ESP8266. [S.d.]. Disponível em: <http://github.com/andresarmento/modbus-arduino>. Acesso em: 17 maio 2024.
BARROS, Nelson et al. SchoolAIR: A Citizen Science IoT Framework Using Low-Cost Sensing for Indoor Air Quality Management. Sensors, v. 24, n. 1, p. 148, 27 dez. 2023.
BITTENCOURT, Leonardo; CÂNDIDO, Christhina Ventilação Natural em Edificações. PROCEL EDIFICA - Eficiência Energética Em Edificações. Rio de Janeiro: PROCEL EDIFICA, 2010.
CHATZIDIAKOU, Lia et al. Schools’ air quality monitoring for health and education: Methods and protocols of the SAMHE initiative and project. Developments in the Built Environment, v. 16, p. 100266, dez. 2023.
CONAMA. 506. Resolução do CONAMA No 506/2024. . 9 jul. 2024, Sec. 1. Disponível em: <https://conama.mma.gov.br/?option=com_sisconama&task=arquivo.download&id=827>. Acesso em: 24 jul. 2025.
GOMES, João Paulo de Toledo; INNOCENTINI, Murilo D. M.; FORMIGONI, Carlos E. Desempenho de sensores de CO₂: comparação experimental entre tecnologias NDIR, óxido metálico e eletroquímico. In: : 1.JOSIF-2024. SIMPÓSIO DA PÓS-GRADUAÇÃO DO IFSULDEMINAS. Inconfidentes-MG: 18 dez. 2024. Disponível em: <https://josif.ifsuldeminas.edu.br/ojs/index.php/anais/article/view/1785>. Acesso em: 9 jul. 2025
HOBSON, Brodie W. et al. Minimum sensor grid density and configuration to enable CO2-based demand-controlled ventilation in an office building. Energy and Buildings, v. 298, p. 113536, nov. 2023.
JACOBSON, Tyler A. et al. Direct human health risks of increased atmospheric carbon dioxide. Nature Sustainability, v. 2, n. 8, p. 691–701, 8 jul. 2019.
MUSTAFA, M.; COOK, M. J.; MCLEOD, R. S. A critical review of ventilation effectiveness in naturally ventilated spaces from the perspective of sustainability and health. Building and Environment, v. 270, p. 112471, fev. 2025.
OECD. The Economic Consequences of Outdoor Air Pollution. [S.l.]: OECD, 2016. Disponível em: <https://www.oecd.org/en/publications/the-economic-consequences-of-outdoor-air-pollution_9789264257474-en.html>. Acesso em 24 jul. 2025.
OMS, OMS. Diretrizes globais de qualidade do ar da OMS: partículas inaláveis (MP2,5 e MP10), ozônio, dióxido de nitrogênio, dióxido de enxofre e monóxido de carbono. Resumo executivo. [S.l.]: Pan American Health Organization, 2021.
OPENSTREETMAP. OpenStreetMap, [S.d.]. Disponível em: <https://www.openstreetmap.org/about>. Acesso em: 15 jul. 2025
PASSOS, Município. Dados gerais do município, [S.d.]. Disponível em: <https://www.passos.mg.gov.br/dados-gerais-do-municipio>. Acesso em: 22 jul. 2025
PERSILY, A.; DE JONGE, L. Carbon dioxide generation rates for building occupants. Indoor Air, v. 27, n. 5, p. 868–879, set. 2017.
PERSILY, Andrew; POLIDORO, Brian J. Indoor carbon dioxide metric analysis tool. Gaithersburg, MD: National Institute of Standards and Technology (U.S.), 25 mar. 2022. Disponível em: <https://nvlpubs.nist.gov/nistpubs/TechnicalNotes/NIST.TN.2213.pdf>. Acesso em: 28 jun. 2025.
PRESIDÊNCIA DA REPÚBLICA. 14850. Política Nacional de Qualidade do Ar. . 2 maio 2024.
REQUIA, Weeberb J.; ROIG, Henrique L.; SCHWARTZ, Joel D. Schools exposure to air pollution sources in Brazil: A nationwide assessment of more than 180 thousand schools. Science of The Total Environment, v. 763, p. 143027, abr. 2021.
SCHIRMER, Waldir Nagel et al. A poluição do ar em ambientes internos e a síndrome dos edifícios doentes. Ciência & Saúde Coletiva, v. 16, n. 8, p. 3583–3590, ago. 2011.
SCOLARO, T. P.; GHISI, E. Influência da ventilação natural no conforto térmico de ocupantes em edificações com coberturas frias e verdes. In: ENCONTRO NACIONAL DE TECNOLOGIA DO AMBIENTE CONSTRUÍDO, 20.,2024, Maceió. Anais... Maceió: ANTAC, 2024.
SHANDONG RENKE. RS-FXJT-N01Winddirectiontransmitteruser’s manual (Type485). , [S.d.]. Disponível em: <https://instrucenter.com/wp-content/uploads/2022/03/RS-FXJT-N01.pdf>. Acesso em: 10 maio. 2025
SHEN, Juanyong et al. Evolution of source contributions during heavy fine particulate matter (PM2.5) pollution episodes in eastern China through online measurements. Atmospheric Environment, v. 232, p. 117569, jul. 2020.
SILVA, Saulo Vieira De Oliveira et al. Ventilação natural e qualidade do ar em salas de aula: revisão sistemática da literatura. PARC Pesquisa em Arquitetura e Construção, v. 13, p. e022021, 13 jun. 2022.
SOUZA, Henor Artur De; RODRIGUES, Luciano Souza. Ventilação natural como estratégia para o conforto térmico em edificações. Rem: Revista Escola de Minas, v. 65, n. 2, p. 189–194, jun. 2012.
TEIXERIA ANGUETH DE ARAUJO, Larissa; DE LUNA SALES, Gustavo. Ventilação natural: estratégia de conforto térmico e eficiência energética para uma edificação residencial multifamiliar em Formosa (GO). Paranoá, v. 17, p. e44797, 14 maio 2024.
ZHONG, Jian et al. Impacts of net zero policies on air quality in a metropolitan area of the United Kingdom: Towards world health organization air quality guidelines. Environmental Research, v. 236, p. 116704, nov. 2023.
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Copyright (c) 2026 João Paulo de Toledo Gomes, Nilo Henrique Meira Fortes, José Guilherme Pascoal de Souza, Carlos Eduardo Formigoni, Murilo Daniel de Mello Innocentini

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