Surface condensation risk evaluation in light steel framing walls using ISO 13788:2012
DOI:
https://doi.org/10.21712/lajer.2025.v12.n1.p68-78Palavras-chave:
Surface condensation, Light Steel Framing, vertical enclosure, Brazilian bioclimatic zonesResumo
In recent years, Light Steel Framing (LSF) system has been increasing in Brazil. Despite numerous advantages when compared with the conventional construction system, such as the agility of the construction process, when inadequately designed, buildings can have their hygrothermal behavior penalized. Pathologies, such as surface condensation, can lead to degradation of the building envelope, and compromise indoor air quality. Thus, the objective of this paper is to evaluate the risk of surface condensation in a specific type of LSF system envelope, in an artificially conditioned environment, in bioclimatic zones 1 and 2 of Brazil. The evaluation uses the methodology described in the ISO 13788 (2012) standard. The methodology employed in this study consists of the conduction of computational simulations of a vertical enclosure within the LSF system using the THERM software. The evaluated configuration presented a risk of surface condensation in both regions. Among the strategies to reduce the effects of thermal bridges and the consequent risk of condensation in the panels, the one that presented the best results is the application of EPS thermal break strips.
Downloads
Referências
Abcem (2021) ‘O futuro do Light Steel Framing no Brasil’. https://www.abcem.org.br/site/blog/o-futuro-do-light-steel-framing-no-brasil#:~:text=As%20estimativas%20da%20C%C3%A2mara%20Brasileira,utilizada%20no%20modelo%20steel%20frame (accessed 15 Mai 2022).
Associação Brasileira de Normas Técnicas, 2013. NBR 15575. Edificações Habitacionais – Desempenho. Rio de Janeiro: ABNT.
Associação Brasileira de Normas Técnicas, 2008. NBR 16401-2 Instaações de ar-condiconado - Sistemas centrais e unitários. Parte 2: Parâmetros de conforto térmico. Rio de Janeiro: ABNT.
Associação Brasileira de Normas Técnicas, 2022. NBR 16970-1. Light Steel FRAMING – Sistemas construtivos estruturados em perfis leves de aço formados a frio, com fechamentos em chapas delgadas. Rio de Janeiro: ABNT.
Barreira, E, Delgado, JM, Ramos, NMM and Freitas, VP (2013) ‘Exterior condensations on façades: numerical simulation of the undercooling phenomenon’, Journal of Building Performance Simulation, [e-journal] 6(-), pp. 337-345. https://doi.org/10.1080/19401493.2011.560685.
Bellia, L, Minichiello, FA (2003) ‘A simple evaluator of building envelope moisture condensation according to an European Standard’, Building and Environment, [e-journal] 38(3), pp. 457-468. https://doi.org/10.1016/S0360-1323(02)00060-4.
Berkeley LAB (2022) ‘Windows & Daylaight – Building Technology & Urban Systems’. https://windows.lbl.gov/software/therm (accessed 12 Mai 2022).
British Standards Institution, 2016. BS 5250. Code of practice for control of condensation in buildings. Milton Keynes: BSI.
Clarke, JA (2001) Energy Simulation in Building Design. Great Britain: Butterworth-Heinemann.
Gomes, AP (2012) Método de Avaliação do Desempenho Térmico de Edifícios Comerciais e Residenciais em Light Steel Framing. Doctoral thesis, Universidade Federal de Ouro Preto, Ouro Preto.
Gomes, AP, Souza, HA and Tribess, A (2012) ‘Impacto f thermal bridging on the performance of buildings using Light Steel Framing in Brazil’, Applied Thermal Engineering, v. 52, n. -, p. 84.
Guerra, FL, Cunha, EG, Silva, ACSB and Knop, S (2012) ‘Análise das condições favoráveis à formação de bolor em edificação histórica de Pelotas’, Ambiente Construído, [e-journal] 12(4), pp. 7-23. https://doi.org/10.1590/S1678-86212012000400002.
Inmet (2023) ‘Banco de dados Meteorológicos’. https://portal.inmet.gov.br (accessed 5 Sept 2023).
International Organization for Standardization, 2017. ISO 10211 - 2 Thermal bridges in building construction – Heat flows and surface temperatures. Geneva: ISO.
International Organization for Standardization, 2012. ISO 13788 - Hygrothermal performance of building components and elements – Internal surface temperature to avoid critical surface humidity and interstitial condensation – Calculation methods. Geneva: ISO.
Mumovic, D, Ridley, L, Oreszczyn, T and Davies, M (2006) ‘Condensation risk: comparison of steady-state and transient methods’, Building Serv. Eng. Techcnol, [e-journal] 27(3), pp. 219-233. https://doi.org/10.1191/0143624406bse163oa.
Pires, JR, González, MAS and Tutikian, BF (2021) ‘Condensação em edificações: uma pesquisa bibliográfica’, Revista Conectus, v. 1, n. 5, p. 34.
Roque, E, Santos, P (2017) ‘The effectiveness of thermal insulation in lightweight steel-framed walls with respect to its position’, Buildings, [e-journal] 7(1), pp. 1-18. https://doi.org/10.3390/buildings7010013.
Santiago, AK, Freitas, AMS and Crasto, RCM (2012) Steel Framing: Arquitetura. Rio de Janeiro: Instituto AÇO Brasil/CBCA.
Santos, BMC (2018) Pontes térmicas lineares em edifícios com estrutura metálica leve (LSF): Ligação parede-parede. Master's dissertation, Universidade de Coimbra, Coimbra.
Santos, P (2017) ‘Energy Efficiency of Light Steel-Framed Buildings’, INTECH – Open Science | Open Minds, [e-journal], pp. 35-58. http://doi.org/10.5772/66136.
Santos, P, Martins, C and Silva, LS (2014) ‘Thermal performance of lightweight steel-framed construction systems’, Metallurgical Research and Technology, [e-journal] 111(6), pp. 329-338. https://doi.org/10.1051/metal/2014035.
Silveira, VC, Pinto, MM and Westphal, FS (2019) ‘Influence of environmental factors favorable to the development and proliferation of mold in residential buildings in tropical climates’, Building and Environment, [e-journal] 166, pp. 1-12. https://doi.org/10.1016/j.buildenv.2019.106421.
Downloads
Publicado
Edição
Seção
Licença
Copyright (c) 2025 Latin American Journal of Energy Research
Este trabalho está licenciado sob uma licença Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
O autor, no ato da submissão do artigo, transfere o direito autoral ao periódico.
