Attenuating measures for occupational exposure above the WBGT limit in industrial buildings
Autor(a) principal: | |
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Data de Publicação: | 2024 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | PARC (Campinas) |
Texto Completo: | https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672111 |
Resumo: | Occupational assessments are essential in ensuring employees' wellness, health, and productivity in industrial buildings. This study aims to evaluate the effects of heat exposure in industrial buildings equipped with internal heating sources in Belo Horizonte, Brazil. Using EnergyPlus numerical modeling, the analysis encompasses buildings with and without ridge vents, resulting in 12 distinct models with varying opening areas, internal source power and ridge vent heights. As a primary objective, compliance with the Wet-Bulb Globe Temperature (WBGT) index limit, as specified by NR-15/2021, was determined for indoor thermal conditions. As a result, roof ridge vents and shading devices significantly impact airflow, particularly regarding the increase in work hours that fulfil the WBGT limit. Additionally, the results revealed an enhancement of the chimney effect by internal heat, which led to a temperature reduction of up to 5.1°C through the ridge vent. Thus, by adjusting the ridge vent height, the WBGT can be further reduced by up to 3.3°C. Therefore, even during the hottest summer days in Belo Horizonte (Brazil), the maximum temperature remains at 28.5°C, with 36% of all annual hours exceeding the WBGT limit. As a key finding, a larger area of air outlets in industrial buildings equipped with internal heat sources increases indoor thermal comfort. In summary, similar cases can benefit from these strategies when designing new industrial facilities or retrofitting existing buildings. |
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Attenuating measures for occupational exposure above the WBGT limit in industrial buildingsMedidas atenuantes à exposição ocupacional acima do limite de IBUTG em galpões industriaisNatural ventilationHeat source spaces evaluationIndustrial workplaceVentilação naturalAvaliação de espaços com fonte de calorAmbiente de trabalho industrialOccupational assessments are essential in ensuring employees' wellness, health, and productivity in industrial buildings. This study aims to evaluate the effects of heat exposure in industrial buildings equipped with internal heating sources in Belo Horizonte, Brazil. Using EnergyPlus numerical modeling, the analysis encompasses buildings with and without ridge vents, resulting in 12 distinct models with varying opening areas, internal source power and ridge vent heights. As a primary objective, compliance with the Wet-Bulb Globe Temperature (WBGT) index limit, as specified by NR-15/2021, was determined for indoor thermal conditions. As a result, roof ridge vents and shading devices significantly impact airflow, particularly regarding the increase in work hours that fulfil the WBGT limit. Additionally, the results revealed an enhancement of the chimney effect by internal heat, which led to a temperature reduction of up to 5.1°C through the ridge vent. Thus, by adjusting the ridge vent height, the WBGT can be further reduced by up to 3.3°C. Therefore, even during the hottest summer days in Belo Horizonte (Brazil), the maximum temperature remains at 28.5°C, with 36% of all annual hours exceeding the WBGT limit. As a key finding, a larger area of air outlets in industrial buildings equipped with internal heat sources increases indoor thermal comfort. In summary, similar cases can benefit from these strategies when designing new industrial facilities or retrofitting existing buildings.As avaliações ocupacionais em ambientes laborais se mostram relevantes para a saúde, bem-estar e produtividade dos operários. Neste trabalho, analisa-se por meio de modelagem numérica no EnergyPlus, as condições de exposição ao calor em galpões industriais com fonte interna liberadora de calor para Belo Horizonte/MG, equipados ou não com lanternim (12 modelos: variando-se áreas das aberturas, potência da fonte interna e altura desse dispositivo), a fim de averiguar a conformidade das condições térmicas internas em relação ao limite do Índice de Bulbo Úmido Termômetro de Globo (IBUTG) previsto na NR-15/2021. Os resultados realçaram a relevância do lanternim e dos aparatos de proteção das aberturas na vazão de ar em relação ao aumento das horas em conformidade com o limite de IBUTG. Além disso, constata-se que a fonte interna de calor intensifica o efeito chaminé culminando, portanto, no auxílio da vazão natural do ar interno através do lanternim. Deste modo, obtém-se uma diminuição da temperatura interna em até 5,1°C. Com a correção da altura do lanternim, reduz-se até 3,3°C de IBUTG, resultando, neste caso no valor máximo de 28,5°C para o dia extremo do verão belo-horizontino em apenas 36% das horas do ano acima do IBUTG recomendado. Ressalta-se, como principal contribuição, que se tratando de galpões com fonte de calor, quanto maior a área de saída do ar melhor é a condição térmica interna. Em conclusão, casos semelhantes podem aproveitar as estratégias recomendadas neste estudo para projetar novos galpões ou tomar decisões de intervenção em edifícios existentes. Universidade Estadual de Campinas2024-01-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionTextoinfo:eu-repo/semantics/otherapplication/pdfhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/867211110.20396/parc.v15i00.8672111PARC Pesquisa em Arquitetura e Construção; Vol. 15 (2024): Continuous publication; e024002PARC Pesquisa em Arquitetura e Construção; Vol. 15 (2024): Publicação contínua; e024002PARC Pesquisa em Arquitetura e Construção; v. 15 (2024): Publicação contínua; e0240021980-6809reponame:PARC (Campinas)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPporhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672111/33415Brazil; ContemporaryBrasil; ContemporâneoCopyright (c) 2024 PARC Pesquisa em Arquitetura e Construçãohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessCamargos, Bruno Henrique LourençoSouza, Henor Artur deOliveira, Raquel DinizGomes, Adriano PintoDias, Luma de SouzaDias, Thalita Cardoso2024-07-03T18:43:59Zoai:ojs.periodicos.sbu.unicamp.br:article/8672111Revistahttp://periodicos.sbu.unicamp.br/ojs/index.php/parcPUBhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/oai||parc@fec.unicamp.br1980-68091980-6809opendoar:2024-07-03T18:43:59PARC (Campinas) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings Medidas atenuantes à exposição ocupacional acima do limite de IBUTG em galpões industriais |
title |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings |
spellingShingle |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings Camargos, Bruno Henrique Lourenço Natural ventilation Heat source spaces evaluation Industrial workplace Ventilação natural Avaliação de espaços com fonte de calor Ambiente de trabalho industrial |
title_short |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings |
title_full |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings |
title_fullStr |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings |
title_full_unstemmed |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings |
title_sort |
Attenuating measures for occupational exposure above the WBGT limit in industrial buildings |
author |
Camargos, Bruno Henrique Lourenço |
author_facet |
Camargos, Bruno Henrique Lourenço Souza, Henor Artur de Oliveira, Raquel Diniz Gomes, Adriano Pinto Dias, Luma de Souza Dias, Thalita Cardoso |
author_role |
author |
author2 |
Souza, Henor Artur de Oliveira, Raquel Diniz Gomes, Adriano Pinto Dias, Luma de Souza Dias, Thalita Cardoso |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Camargos, Bruno Henrique Lourenço Souza, Henor Artur de Oliveira, Raquel Diniz Gomes, Adriano Pinto Dias, Luma de Souza Dias, Thalita Cardoso |
dc.subject.por.fl_str_mv |
Natural ventilation Heat source spaces evaluation Industrial workplace Ventilação natural Avaliação de espaços com fonte de calor Ambiente de trabalho industrial |
topic |
Natural ventilation Heat source spaces evaluation Industrial workplace Ventilação natural Avaliação de espaços com fonte de calor Ambiente de trabalho industrial |
description |
Occupational assessments are essential in ensuring employees' wellness, health, and productivity in industrial buildings. This study aims to evaluate the effects of heat exposure in industrial buildings equipped with internal heating sources in Belo Horizonte, Brazil. Using EnergyPlus numerical modeling, the analysis encompasses buildings with and without ridge vents, resulting in 12 distinct models with varying opening areas, internal source power and ridge vent heights. As a primary objective, compliance with the Wet-Bulb Globe Temperature (WBGT) index limit, as specified by NR-15/2021, was determined for indoor thermal conditions. As a result, roof ridge vents and shading devices significantly impact airflow, particularly regarding the increase in work hours that fulfil the WBGT limit. Additionally, the results revealed an enhancement of the chimney effect by internal heat, which led to a temperature reduction of up to 5.1°C through the ridge vent. Thus, by adjusting the ridge vent height, the WBGT can be further reduced by up to 3.3°C. Therefore, even during the hottest summer days in Belo Horizonte (Brazil), the maximum temperature remains at 28.5°C, with 36% of all annual hours exceeding the WBGT limit. As a key finding, a larger area of air outlets in industrial buildings equipped with internal heat sources increases indoor thermal comfort. In summary, similar cases can benefit from these strategies when designing new industrial facilities or retrofitting existing buildings. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-01-18 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Texto info:eu-repo/semantics/other |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672111 10.20396/parc.v15i00.8672111 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672111 |
identifier_str_mv |
10.20396/parc.v15i00.8672111 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672111/33415 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2024 PARC Pesquisa em Arquitetura e Construção https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2024 PARC Pesquisa em Arquitetura e Construção https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Brazil; Contemporary Brasil; Contemporâneo |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
dc.source.none.fl_str_mv |
PARC Pesquisa em Arquitetura e Construção; Vol. 15 (2024): Continuous publication; e024002 PARC Pesquisa em Arquitetura e Construção; Vol. 15 (2024): Publicação contínua; e024002 PARC Pesquisa em Arquitetura e Construção; v. 15 (2024): Publicação contínua; e024002 1980-6809 reponame:PARC (Campinas) instname:Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP |
instname_str |
Universidade Estadual de Campinas (UNICAMP) |
instacron_str |
UNICAMP |
institution |
UNICAMP |
reponame_str |
PARC (Campinas) |
collection |
PARC (Campinas) |
repository.name.fl_str_mv |
PARC (Campinas) - Universidade Estadual de Campinas (UNICAMP) |
repository.mail.fl_str_mv |
||parc@fec.unicamp.br |
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1809283615775784960 |