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<p>Outdoor thermal comfort (OTC) is a key factor influencing village livability and the vitality of street spaces. Traditional villages in southern Anhui Province, located in a subtropical humid climate, experience hot and humid summers, and their street morphology embodies climate-adaptive wisdom, providing significant thermal regulation. This study constructed 48 parametric models based on street type, orientation, and building height variation. After validation with field measurements, physical parameters and physiologically equivalent temperature (PET) were quantified for different street configurations to analyze their effects on outdoor thermal comfort. The results indicate that: (1) Alleys exhibit better thermal comfort than principal streets. (2) On principal streets, mean wind speed increases with the standard deviation of building height, whereas in the alleys, a significant increase in wind speed to 0.84&#xa0;m/s is observed only when the standard deviation reaches 50%. (3) Under conditions of intense solar radiation, the standard deviation of building heights is positively correlated with PET, with this correlation being particularly pronounced for north-south oriented streets at 12:00 (R²=0.77). (4) The correlation between the standard deviation of building height and PET is significantly lower in northeast-southwest (NE-SW) and northwest-southeast (NW-SE) streets than in north-south (N-S) and east-west (E-W) streets. This research quantifies how street morphology in southern Anhui’s traditional villages influences thermal comfort, offering guidance for sustainable renewal design in analogous climate regions.</p>

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Effects of street morphological features on outdoor thermal comfort in traditional villages of Southern Anhui, China

  • 期刊论文

  • 发表日期：

    2026年6月2日

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  • Xingguang Zhang,
  • Zao Li,
  • Taoyuan Zhang,
  • Yulu Chen

摘要

Outdoor thermal comfort (OTC) is a key factor influencing village livability and the vitality of street spaces. Traditional villages in southern Anhui Province, located in a subtropical humid climate, experience hot and humid summers, and their street morphology embodies climate-adaptive wisdom, providing significant thermal regulation. This study constructed 48 parametric models based on street type, orientation, and building height variation. After validation with field measurements, physical parameters and physiologically equivalent temperature (PET) were quantified for different street configurations to analyze their effects on outdoor thermal comfort. The results indicate that: (1) Alleys exhibit better thermal comfort than principal streets. (2) On principal streets, mean wind speed increases with the standard deviation of building height, whereas in the alleys, a significant increase in wind speed to 0.84 m/s is observed only when the standard deviation reaches 50%. (3) Under conditions of intense solar radiation, the standard deviation of building heights is positively correlated with PET, with this correlation being particularly pronounced for north-south oriented streets at 12:00 (R²=0.77). (4) The correlation between the standard deviation of building height and PET is significantly lower in northeast-southwest (NE-SW) and northwest-southeast (NW-SE) streets than in north-south (N-S) and east-west (E-W) streets. This research quantifies how street morphology in southern Anhui’s traditional villages influences thermal comfort, offering guidance for sustainable renewal design in analogous climate regions.