Simulation and Optimization of Insulation Wall Corner Construction for Ultra-Low Energy Buildings

Shuai Zhang, Dexuan Song, Zhuoyu Yu, Yifan Song, Shubo Du and Li Yang ()
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Shuai Zhang: College of Architecture and Urban Planning, Tongji University, Shanghai 200092, China
Dexuan Song: College of Architecture and Urban Planning, Tongji University, Shanghai 200092, China
Zhuoyu Yu: College of Architecture and Urban Planning, Tongji University, Shanghai 200092, China
Yifan Song: College of Design and Engineering, National University of Singapore, Singapore 119077, Singapore
Shubo Du: College of Architecture and Urban Planning, Tongji University, Shanghai 200092, China
Li Yang: College of Architecture and Urban Planning, Tongji University, Shanghai 200092, China

Energies, 2023, vol. 16, issue 3, 1-26

Abstract: Approximately 40% of the overall energy consumption of society is consumed by buildings. Most building energy usage is due to poor envelope performance. In regions with cold winters, the corners of structures typically have the lowest interior surface temperature. In corners, condensation, frost, and mold are common. This has a substantial effect on building energy usage and residents’ comfort. In this study, the heat loss of corner envelopes is evaluated, and a suitable insulation construction of wall corners is constructed to increase the surface temperature of the envelope interior. Computational Fluid Dynamics simulation has been used to examine the heat transmission in a corner of an ultra-low energy building in this study. By comparing the indoor surface temperature to the soil temperature beneath the building, the insulation construction of wall corners has been tuned. The study results indicate that the planned insulation construction of wall corners can enhance the internal surface temperature in the corner and the soil temperature under the structure by approximately 8.5 °C, thereby decreasing the indoor–outdoor temperature differential and the heat transfer at ground level. In extremely cold places, the insulation horizontal extension belt installation can help prevent the earth beneath the building from freezing throughout the winter.

Keywords: ultra-low energy buildings; envelope structures; corner enclosures; building energy efficiency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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