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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
INFLUENCE OF EXPOSED STEEL STRUCTURE AREA ON THE THERMAL PERFORMANCE OF ARTIFICIALLY CONDITIONED BUILDINGS
Submission Author:
Lucas Caetano , MG
Co-Authors:
Lucas Caetano, Henor Artur Souza, Luma Dias, Adriano Gomes
Presenter: Lucas Caetano
doi://10.26678/ABCM.ENCIT2020.CIT20-0550
Abstract
When a material with high thermal conductivity, such as steel, is placed in parallel with a less conductive material, most of the heat transfer occurs through the steel by conduction, characterizing an effect known as thermal bridging. Thermal bridges reduce the thermal resistance of the external envelope, increasing energy costs for environmental heating or cooling. Therefore, this paper aims to evaluate the thermal performance of artificially conditioned environments using computational simulations. The preliminary results obtained to Bioclimatic Zone 1 showed that there was a maximum increase of 5.5% in the environment total cooling thermal load and, as a consequence, a maximum variation of 6.5% in the building energy consumption. It is expected that, at the end of this research, the results obtained will quantify the increase in energy consumption due to the exposed steel structure area for all other Brazilian Bioclimatic Zones, showing the importance of quantifying thermal losses caused by the presence of thermal bridges in the building's structure.
Keywords
Thermal performance, Steel Structures, thermal bridge, Thermal load, air conditioning
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