Influence of air conditioning on the thermal perception of users of open spaces in a city with cfa climate

Authors

DOI:

https://doi.org/10.46421/encac.v17i1.4137

Keywords:

Air conditioning, Natural ventilation, PET index, Open spaces

Abstract

The study of thermal comfort in outdoor areas is important for understanding individuals' comfort levels and for climate-sensitive urban planning. The thermal perception of users of open spaces is influenced by several factors, and the use of artificial air conditioning in environments is one of these aspects. This study seeks to verify the thermal perception of users of open spaces in the city of Pelotas - RS, regards to the impact generated by the prolonged use of air conditioning systems in internal environments. 53 data monitoring campaigns were carried out simultaneously with the application of a questionnaire to the population, from July 2019 to March 2020. To record the variables, the TGD-400 thermal stress meter was used and the questionnaires were structured according to ISO 8996 (2004), 7730 (2005), 9920 (2007) and 10551 (2015) regulations. The Physiological Equivalent Temperature (PET) index was used to compare the results obtained for those who use artificial air conditioning and those use natural ventilation. The results show that the impact caused by the use of artificial air conditioning alters the thermal perception of individuals, influencing therefore, on the limits of the thermal comfort ranges.

Author Biographies

Luísa Alcantara Rosa, Federal University of Technology of Paraná

Master's degree in Architecture from the Federal University of Pelotas. PhD student in Urban Environmental Sustainability at the Federal University of Technology of Paraná (Curitiba - PR, Brazil).

Eduardo Leite Krüger, Federal University of Technology of Paraná

PhD in Architecture from Gottfried Wilhelm Leibniz Universität Hannover. Full Professor at the Federal University of Technology of Paraná (Curitiba - PR, Brazil).

Eduardo Grala da Cunha, Federal University of Pelotas

PhD in Architecture from Federal University of Rio Grande do Sul. Associate Professor at the Federal University of Pelotas (Pelotas - RS, Brazil).

References

ABNT. NBR 15220-3 Desempenho térmico de edificações – Parte 3: Zoneamento bioclimático brasileiro e diretrizes construtivas para habitações unifamiliares de interesse social. Rio de Janeiro, 2005.

ANDRADE, Telma Côrtes et al. Medição do conforto térmico em áreas públicas urbanas de Salvador-BA e calibração do índice de conforto pet usando a técnica árvore de decisão. Revista Eletrônica de Gestão e Tecnologias Ambientais, v. 4, n. 2, p. 278-296, 2016.

BARAKAT, A.; AYAD, H.; EL-SAYED, Z. Urban design in favor of human thermal comfort for hot arid climate using advanced simulation methods. Alexandria Engineering Journal, v. 56, n. 4, p. 533-543, 2017.

CHUN, Chungyoon et al. Thermal diary: Connecting temperature history to indoor comfort. Building and Environment, v. 43, n. 5, p. 877-885, 2008.

DE VECCHI, Renata; CÂNDIDO, Christhina Maria; LAMBERTS, Roberto. Thermal history and comfort in a Brazilian subtropical climate: a 'cool' addiction hypothesis. Ambiente Construído, v. 16, p. 7-20, 2016.

DA SILVEIRA HIRASHIMA, Simone Queiroz; DE ASSIS, Eleonora Sad; NIKOLOPOULOU, Marialena. Daytime thermal comfort in urban spaces: A field study in Brazil. Building and Environment, v. 107, p. 245-253, 2016.

GOBO, João Paulo Assis; GALVANI, Emerson; WOLLMANN, Cássio Arthur. Subjective Human Perception of Open Urban Spaces in the Brazilian Subtropical Climate: A First Approach. Climate, v. 6, n. 2, p. 24, 2018.

HÖPPE, P. Different aspects of assessing indoor and outdoor thermal comfort. Energy and buildings, v.34, n.6, p.661–665, 2002.

HUANG, J.; CEDEÑO-LAURENT, J. G.; SPENGLER, J. D. CityComfort+: A simulation-based method for predicting men radiant temperature in dense urban areas. Building and Environment, v. 80, p. 84-95, 2014.

INSTITUTO NACIONAL DE METEREOLOGIA. Normais Climatológicas 1981-2010. INMET, BRASIL, 2018.

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 10551. Ergonomics of the thermal environments – Assessment of the influence of the thermal environment using subjective judgment scales. Genève: ISO, 2015.

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 7726. Ergonomics of the thermal environments – Instruments for measuring physical quantities. Genève: ISO, 1998.

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 7730. Ergonomics of the thermal environment – Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria. Genève, 2005.

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 8996. Ergonomics of the thermal environments – Determination of thermal metabolic rate. Genève: ISO, 2004.

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 9920. Ergonomics of the thermal environments – Estimation of thermal insulation and water vapour resistance of a clothing ensemble. Genève: ISO, 2007.

JOHANSSON, E. Urban thermal comfort in the tropics. In: EMMANUEL, R. Urban Climate in the tropics: Rethinking Planning and Design Opportunities. London: Imperial College Press, 2016. p. 163-204.

JOHANSSON, E.; THORSSON, S.; EMMANUEL, R.; KRÜGER, E. Instruments and methods in outdoor thermal comfort studies - The need for standardization.Urban Climate, Vol. 10, p. 346-366, 2014.

KRÜGER, E.; DRACH, P.; EMMANUEL, R.; CORBELLA, O. Assessment of daytime outdoor comfort levels in and outside the urban area of Glasgow, UK. International journal of biometeorology, v.57, n.4, p.521–533, 2013.

KRÜGER, E. L.; DRACH, P. R. C. Impactos do uso de climatização artificial na percepção térmica em espaços abertos no centro do Rio de Janeiro. Ambiente Construído, Porto Alegre, v. 16, n. 2, p. 133-148, abr./jun. 2016.

KRÜGER, E. L.; ROSSI, F. A.; CRISTELI, P. S.; SOUZA, H. A. de. Calibração do índice de conforto para espaços externos Physiological Equivalent Temperature (PET) para Curitiba. Ambiente Construído, Porto Alegre, v. 18, n. 3, p. 135-148, jul./set. 2018.

KRÜGER, E. et al. Short-term acclimatization effects in an outdoor comfort study. In: ICUC9-9TH INTERNATIONAL CONFERENCE ON URBAN CLIMATE, 2015, 2015. Anais..., 2015.

LIN, T.-P.Thermal perception, adaptation and attendance in a public square in hot and humid regions. Building and environment, v.44, n.10, p.2017–2026, 2009.

LUCCHESE, J. R.; MIKURI, L. P.; FREITAS, V. S. de; ANDREASI, W. A. Application of Selected Indices on Outdoor Thermal Comfort Assessment in Midwest Brazil. International Journal of Energy and Environment, v. 7, n. 4, p. 291-302, 2016.

MATZARAKIS, A.; BLAZEJCZYK, K.; AMELUNG, B. Climate Change and Tourism Assessment and Coping Strategies. Freiburg: Maastricht-Warsaw, 2007.

MATZARAKIS, A.; MAYER, H. Another Kind of Environmental Stress: thermal stress. WHO Newsletter, v. 18, p. 7-10, 1996.

MATZARAKIS, A.; RUTZ, F.; MAYER, H. Modeling radiation fluxes in simple and complex environments: Basics of the RayMan model. International Journal of Biometeorology, v. 54,n. 2, p. 131-139, 2007.

MAYER, H.; HÖPPE, P. Thermal comfort of man in different urban environments. Theoretical and Applied Climatology, v. 38, n. 1, p. 43-49, 1987.

MONTEIRO, L. M..; ALUCCI, M. P. Calibration of outdoor thermal comfort models. Proceedings... PLEA 2006 - The 23rd Conference on Passive and Low Energy Architecture. Geneva, Switzerland, 2006.

RAMOS, G.; DE VECCHI, R.; LAMBERTS, R. Air conditioning use in residential buildings: how does it impact on thermal perception ? Windsor 2020 Resilient Comfort – Proceedings... of 11th Windsor Conference, 16th–19th April 2020, pp.682-691. ISBN 978-1-9161876-3-4. London, UK, 2020.

ROSSATO, MAÍRA SUERTEGARAY. Os climas no Rio Grande do Sul: variabilidade, tendências e tipologia. Tese de Doutorado - Universidade Federal do Rio Grande do Sul. Instituto de Geociências. Programa de Pós-Graduação em Geografia, Porto Alegre, RS - BR, 2011.

ROSSI, F. A.; KRÜGER, E.; DRACH, P. Calibração do índice PET para Curitiba e Rio de Janeiro. In: Encontro Nacional de Conforto no Ambiente Construído, 2017, Balneário Camboriú, SC. Anais... Balneário Camboriú, SC: ENCAC, 2017, V. 1. p. 185-193.

SPAGNOLO, J.; DE DEAR, R. A field study of thermal comfort in outdoorand semi-outdoor environments in subtropical Sydney Australia. Building and Environment, v.38, n.5, p.721–738, 2003.

THORSSON, S.; LINDBERG, F.; ELIASSON, I.; HOLMER, B. Different methods for estimating the mean radiant temperature in an outdoor urban setting. International Journal of Climatology, v.27, p.1983-1993, 2007.

YU, J. et al. People who live in a cold climate: thermal adaptation differences based on availability of heating. Indoor air, v. 23, n. 4, p. 303-310, 2013.

Published

2023-10-26

How to Cite

ROSA, Luísa Alcantara; KRÜGER, Eduardo Leite; CUNHA, Eduardo Grala da. Influence of air conditioning on the thermal perception of users of open spaces in a city with cfa climate. In: ENCONTRO NACIONAL DE CONFORTO NO AMBIENTE CONSTRUÍDO, 17., 2023. Anais [...]. [S. l.], 2023. p. 1–10. DOI: 10.46421/encac.v17i1.4137. Disponível em: https://eventos.antac.org.br/index.php/encac/article/view/4137. Acesso em: 21 nov. 2024.

Issue

Section

2. Clima e Planejamento Urbano

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