THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES

THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES

Thermal bridges are vulnerable points present in the envelope of buildings and influence the thermoenergetic performance and still bring consequences to the opaque surface such as the favoring in the formation of filamentous fungi. The impacts of thermal bridges and their consideration in calculatio...

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Główni autorzy: de Freitas, Julye Ramalho, Leitzke, Rodrigo Karini, Cunha, Eduardo Grala da
Format: Online
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Wydane: Unisinos 2020
Dostęp online:https://revistas.unisinos.br/index.php/arquitetura/article/view/arq.2020.162.08
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spelling oai:ojs.www.unisinos.br:article-191862021-08-30T19:09:23Z THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES MODELAGEM DE PONTES TÉRMICAS NA ZONA BIOCLIMÁTICA 2: CINCO DIFERENTES ABORDAGENS de Freitas, Julye Ramalho Leitzke, Rodrigo Karini Cunha, Eduardo Grala da Thermal bridges are vulnerable points present in the envelope of buildings and influence the thermoenergetic performance and still bring consequences to the opaque surface such as the favoring in the formation of filamentous fungi. The impacts of thermal bridges and their consideration in calculations of thermal transmittance have been discussed in different parts of the world and in regions of cold climates in Brazil. This work aims to evaluate the impact of thermal bridges of reinforced concrete structure in a residential building in the bioclimatic zone 2, considering five approaches for modeling of thermal bridges in the EnergyPlus computational simulation software. The results show that the type of approach used for modeling in computational simulation influences the energy consumption values of the building. The different models tested showed variations in building energy consumption when comparing the strategies that considered the calculations of thermal bridges with the approach that disregarded this calculation, especially in high insulated buildings, where it was possible to identify differences of up to 13%. The conclusions observed show that the level of insulation of the envelope is one of the factors that interferes in the differences in building consumption between the approaches evaluated for thermal bridges. Keywords: Linear Thermal Bridges, Computer Simulation, Energy Performance As pontes térmicas são pontos vulneráveis presentes no envelope das edificações e influenciam no desempenho termoenergético e ainda trazem consequências ao fechamento opaco, como o favorecimento na formação de fungos filamentosos. Os impactos das pontes térmicas e a sua consideração nos cálculos de transmitância térmica têm sido discutidos em diversos lugares do mundo e em regiões de climas frios no Brasil. Este trabalho tem como objetivo avaliar o impacto de pontes térmicas de estrutura de concreto armado em uma edificação residencial na zona bioclimática 2, considerando cinco abordagens para modelagem de pontes térmicas no software de simulação computacional EnergyPlus. Os resultados mostram que o tipo de abordagem utilizada para modelagem na simulação computacional influencia nos valores de consumo energético da edificação. As diferentes modelagens testadas apresentaram variações no consumo energético quando comparadas às estratégias que consideraram os cálculos das pontes térmicas com a abordagem que desconsiderou este cálculo, sobretudo nos edifícios com maiores níveis de isolamento térmico, onde foi possível identificar diferenças de até 13% no consumo de energia. As conclusões observadas no trabalho mostram que o nível de isolamento do envelope é um dos fatores que interfere nas diferenças de consumo entre as abordagens avaliadas para as pontes térmicas. Palavras-chave: Pontes térmicas lineares, Simulação Computacional, Desempenho energético.  Unisinos 2020-04-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unisinos.br/index.php/arquitetura/article/view/arq.2020.162.08 10.4013/arq.2020.162.08 Arquitetura Revista; v. 16 n. 2 (2020): Jul-Dez; 315-343 1808-5741 por https://revistas.unisinos.br/index.php/arquitetura/article/view/arq.2020.162.08/60747888
institution Universidad de Vale do Rio dos Sinos (UNISINOS)
collection OJS
language por
format Online
author de Freitas, Julye Ramalho
Leitzke, Rodrigo Karini
Cunha, Eduardo Grala da
spellingShingle de Freitas, Julye Ramalho
Leitzke, Rodrigo Karini
Cunha, Eduardo Grala da
THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES
author_facet de Freitas, Julye Ramalho
Leitzke, Rodrigo Karini
Cunha, Eduardo Grala da
author_sort de Freitas, Julye Ramalho
title THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES
title_short THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES
title_full THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES
title_fullStr THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES
title_full_unstemmed THERMAL BRIDGES MODELING IN BIOCLIMATIC ZONE 2: FIVE DIFFERENT APPROACHES
title_sort thermal bridges modeling in bioclimatic zone 2: five different approaches
description Thermal bridges are vulnerable points present in the envelope of buildings and influence the thermoenergetic performance and still bring consequences to the opaque surface such as the favoring in the formation of filamentous fungi. The impacts of thermal bridges and their consideration in calculations of thermal transmittance have been discussed in different parts of the world and in regions of cold climates in Brazil. This work aims to evaluate the impact of thermal bridges of reinforced concrete structure in a residential building in the bioclimatic zone 2, considering five approaches for modeling of thermal bridges in the EnergyPlus computational simulation software. The results show that the type of approach used for modeling in computational simulation influences the energy consumption values of the building. The different models tested showed variations in building energy consumption when comparing the strategies that considered the calculations of thermal bridges with the approach that disregarded this calculation, especially in high insulated buildings, where it was possible to identify differences of up to 13%. The conclusions observed show that the level of insulation of the envelope is one of the factors that interferes in the differences in building consumption between the approaches evaluated for thermal bridges. Keywords: Linear Thermal Bridges, Computer Simulation, Energy Performance
publisher Unisinos
publishDate 2020
url https://revistas.unisinos.br/index.php/arquitetura/article/view/arq.2020.162.08
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