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Effects of prismatic glazing and architectural spatial form on daylighting performance of sunken underground public space—A case study in Nanjing, China
Energy and Buildings ( IF 6.6 ) Pub Date : 2025-01-21 , DOI: 10.1016/j.enbuild.2025.115356
Gerui Sui, Wei Yuan, Jiawei Leng, Xiaohan Shen

Over the past two decades, the development and utilization of underground spaces have increasingly become a critical aspect of urban construction in China. Given the importance of underground public spaces in urban life, enhancing the use of natural light is essential for creating comfortable, healthy, and energy-efficient environments. Spatial form is frequently used in architectural design to optimize daylighting performance. However, current research seldom considers the combined impacts of spatial form and complex fenestration systems on daylighting performance in underground spaces, limiting the potential for maximizing daylighting benefits. Based on Latin hypercube sampling and morphological clustering, this paper utilizes batch simulations and statistical analysis to explore the effects of spatial form and prismatic glazing on the daylighting performance of sunken underground public spaces, while also accounting for potential impacts on thermal comfort and energy consumption. The research was conducted in a hot-summer, cold-winter region of China (Nanjing). The findings reveal that the volume of sunken spaces is the key spatial form variable. Variations in prismatic glazing structures have minimal impact on thermal comfort and energy consumption but can result in up to a 29% difference in the daylighting performance of spatial interfaces. In addition to the structure, the effectiveness of prismatic glazing in regulating daylighting performance is also influenced by factors such as orientation and the width of the daylighting surfaces. Applying prismatic glazing after the spatial form has been established may significantly reduce its performance on enhancing the daylight quantity. Nonetheless, for varying building scales and orientations, fixed prismatic configurations may achieve relatively optimal daylighting performance. This study provides theoretical support for the early design stages of underground spaces, contributing to the sustainable development of future urban environments.
更新日期:2025-01-21
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