Horizontal Heat Impacts of a Building on Various Soil Layer Depths in Beijing City

Hongxuan Zhou, Huan Chen, Yue Wu, Jianfeng Zha, Jing Sun, Dan Hu and Pingjia Luo
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Hongxuan Zhou: School of Architecture and Design, China University of Mining and Technology, Xuzhou 221116, China
Huan Chen: School of Architecture and Design, China University of Mining and Technology, Xuzhou 221116, China
Yue Wu: School of Architecture and Design, China University of Mining and Technology, Xuzhou 221116, China
Jianfeng Zha: School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
Jing Sun: School of Architecture and Design, China University of Mining and Technology, Xuzhou 221116, China
Dan Hu: Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Pingjia Luo: School of Architecture and Design, China University of Mining and Technology, Xuzhou 221116, China

Sustainability, 2019, vol. 11, issue 7, 1-19

Abstract: There is a lot of research on the urban thermal environment, mainly on air temperature. However, fewer studies focus on soil temperature that is influenced by built environment, especially on the horizontal heat impacts from buildings. In this research, soil temperature was investigated at different depths in Beijing, China, to compare the differences between two locations. One was next to the building and the other was far away from the building (10 m). The locations are referred to as site A and site B, respectively. These two sites were chosen to compare the differences in soil temperatures between them to present the horizontal heat impact from facade. The results show that facades caused horizontal heat impacts on the soil at different depths in the winter, spring, and summer. Basically, facades functioned as heat sources to the soil surrounding them. The mean temperature differences between the two sites were 3.282, 4.698 and 0.316 K in the winter, spring and summer, respectively. Additionally, the thermal effects of the buildings were not only exhibited as higher soil temperatures but the temporal appearance of the maximum and minimum temperature was also influenced. Buildings functioned as heat sources to heat soil in the winter and spring and stabilized soil temperature so that it would not fluctuate too much in the summer. Additionally, the coefficient of variation indicates that buildings primarily increased the soil temperature in the winter and spring and stabilized the soil temperature in the summer.

Keywords: underground urban heat island; soil temperature; construction; facade; thermal process; thermal pollution (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
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