Study on Referential Methodology for Pathogenic Mechanisms of Invigorating Wind/Deficiency Wind in Natural Ventilation Environments

The impact of wind direction on comfort and health remains underexplored in the field of natural ventilation. This study adopts the concepts of invigorating wind/deficiency wind from the “nine palaces and eight winds” theoretical framework in the Huangdi Neijing, integrating solar terms and wind direction as temporal-spatial elements into existing environmental factor analysis paradigms. Three key questions were explored, namely, the temporal principles of meteorological cycle division from an annual perspective, the impact of invigorating wind/deficiency wind on climatic stability during solar term cycles, and the spatiotemporal distribution characteristics of invigorating wind/deficiency wind. Multi-scale analyses were conducted using typical meteorological year data and real-time meteorological data from case cities. Results showed that solar term cycle divisions adjusted based on temperature variations better align with regional climatic characteristics. The ratio of invigorating wind/deficiency wind on solar term days may imply climatic stability within solar term cycles. Also, significant differences exist between deficiency wind and invigorating wind during high-disease-incidence solar terms, though their manifestations vary. These findings help to find new wind characteristics to explain the comfort and health effects of natural ventilation and will provide scientific foundations for further exploration of well-being in indoor environments.