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Correlative Impact of Shading Strategies and Configurations Design on Pedestrian-Level Thermal Comfort in Traditional Shophouse Neighbourhoods, Southern China

Author

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  • Shi Yin

    (School of Architecture, South China University of Technology, Guangzhou 510641, China
    State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China)

  • Werner Lang

    (Institute of Energy Efficient and Sustainable Design and Building, Technical University of Munich, 80333 Munich, Germany)

  • Yiqiang Xiao

    (School of Architecture, South China University of Technology, Guangzhou 510641, China
    State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China)

  • Zhao Xu

    (School of Civil Engineering, Southeast University, Nanjing 210096, China)

Abstract

Traditional shophouse neighbourhoods (TSNs) in southern China respond well to the local hot and humid climate through proper street configurations and the integration of different shading strategies. Investigating the impact of shading strategies and configurations in TSNs on outdoor thermal comfort is valuable for guiding current urban design. Three street canyons in a TSN of Guangzhou with different shading strategies were selected as basic cases for microclimatic measurement in the summer season, i.e., alleys, streets with arcade for pedestrians, and streets with high-density greenery. After validating their simulation models in ENVI-met, five groups of parametric simulations were generated by varying the canyon aspect ratio (CHW), the canyon axis orientation, arcade proportion (AHW), and the tree-covered area (TCA). Using the physiological equivalent temperature (PET) to assess the above results, the correlative impact of different variations on pedestrian’s thermal comfort and their corresponding favourable ranges are summarized. The findings suggest that: (a) only in alleys and arcade streets, the pedestrian-level thermal comfort was significantly influenced by canyon axis orientation. (b) The thermal stress for pedestrians increased dramatically when the CHW was lower than 1.5 in alleys and 0.78 in boulevards (in TCA = 89%), while the CHW higher than 1 indicated a remarkable reduction on the PET for pedestrians in arcades. (c) The pedestrians started losing the protection from shading strategy to thermal stress when the AHW was higher than 1.33 (in canyon with CHW = 1) or the TCA was lower than 33% (in canyon with CHW = 0.78).

Suggested Citation

  • Shi Yin & Werner Lang & Yiqiang Xiao & Zhao Xu, 2019. "Correlative Impact of Shading Strategies and Configurations Design on Pedestrian-Level Thermal Comfort in Traditional Shophouse Neighbourhoods, Southern China," Sustainability, MDPI, vol. 11(5), pages 1-26, March.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:5:p:1355-:d:211009
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    References listed on IDEAS

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    2. Wesam M. Elbardisy & Mohamed A. Salheen & Mohammed Fahmy, 2021. "Solar Irradiance Reduction Using Optimized Green Infrastructure in Arid Hot Regions: A Case Study in El-Nozha District, Cairo, Egypt," Sustainability, MDPI, vol. 13(17), pages 1-32, August.
    3. Daoru Liu & Zhigang Ren & Shen Wei & Zhe Song & Peipeng Li & Xin Chen, 2019. "Investigations on the Winter Thermal Environment of Bedrooms in Zhongxiang: A Case Study in Rural Areas in Hot Summer and Cold Winter Region of China," Sustainability, MDPI, vol. 11(17), pages 1-25, August.
    4. Guilhardo Barros Moreira de Carvalho & Luiz Bueno da Silva, 2024. "The microclimate implications of urban form applying computer simulation: systematic literature review," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 26(10), pages 24687-24726, October.

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