[논문]Empirical analysis of building energy consumption and urban form in a large city: A case of Seoul, South Korea

Oh, Minseok; Jang, Kee Moon; Kim, Youngchul

doi:10.1016/j.enbuild.2021.111046

[해외논문] Empirical analysis of building energy consumption and urban form in a large city: A case of Seoul, South Korea

Energy and buildings, v.245, 2021년, pp.111046 -

Oh, Minseok (KAIST Urban Design Lab, Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) , Jang, Kee Moon (KAIST Urban Design Lab, Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) , Kim, Youngchul (KAIST Urban Design Lab, KAIST Smart City Research Center, Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)

(계산과학플랫폼 EDISON 연구성과)

Abstract ▼ AI-Helper

Abstract In the climate change era, urban geometry serves to ensure sustainability for urban planners since it notably affects building energy consumption. However, previous studies have mainly conducted experimental investigations under hypothetical conditions. Without empirical evidence, it is difficult to implement these findings under real conditions. This paper examined empirical data to determine the urban geometry effect on building energy consumption in a large, complicated urban area. Urban geometric parameters, including the surface-to-volume ratio, obstruction angle, and building orientation, were measured across Seoul, and their correlations with building energy use were analyzed. The results show that the surface-to-volume ratio and obstruction angle are important, despite the empirical data complexity. Additional data analysis indicates that the heating energy type and building use consideration yields more reliable correlation coefficient trends. The potential impacts of natural ventilation and the urban heat island (UHI) effect on building energy consumption were examined. The UHI effect, rather than shadows on buildings, predominantly impacts the building electricity use in August and September. The correlation variation caused by the building permit date was investigated. The results in this paper could help urban planners and designers develop blueprints to control urban geometry and establish relevant design guidelines. Highlights This paper determines the relationship between urban form and building energy use. The surface-to-volume ratio and obstruction angle of buildings are important. Consideration of the heating energy type and building use can yield reliable result. The urban heat island effect exerts an impact on the electricity use in some months. Correlation variation is caused by the building permit date.

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