Realistic natural ventilation potential estimation is critical for energy-efficient building design. For buildings in urban areas, evaluations using design expectations tend to overestimate potential. This study presents a comprehensive framework and corresponding method to predict the natural ventilation potential of buildings, integrating multiple key environmental factors of climate features, local wind status, and air pollution level. It addresses their complex interplay. Climate impacts are evaluated through simulating using a pre-set natural ventilation rate. Computational fluid dynamics models typical neighbourhood wind fields, giving empirical wind pressure coefficient distributions by layout and wind direction to enable real-time ventilation rate calculation. Substituting real-time for pre-set rates, the natural ventilation potential considering the community layout can be obtained. Based on the data-driven rapid pollutant prediction model established in the previous study, the predictions of the temporal and spatial distributions of particulate matter can be obtained. Filtering excessive pollution periods yields air quality-integrated potentials. Natural ventilation potentials are compared under different analysis scenarios for a case-study building. Hotter climates and more frequent heatwaves lower the potential. Morphology-based potentials are significantly lower than design expectations using constant ventilation rates. Deteriorating urban air quality also directly limits ventilation use, substantially decreasing potentials when filtering for poor conditions. By capturing complex environmental interactions, this research provides a robust platform to reveal localization potentials and limitations.

中文翻译：

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多重环境因素影响下城市建筑自然通风潜力综合评价

现实的自然通风潜力估算对于节能建筑设计至关重要。对于城市地区的建筑，使用设计预期进行评估往往会高估潜力。本研究提出了一个综合框架和相应的方法来预测建筑物的自然通风潜力，综合了气候特征、当地风力状况和空气污染水平等多个关键环境因素。它解决了它们复杂的相互作用。通过使用预设的自然通风率进行模拟来评估气候影响。计算流体动力学对典型的邻近风场进行建模，根据布局和风向给出经验风压系数分布，以实现实时通风率计算。用实时代替预设速率，可以获得考虑社区布局的自然通风潜力。基于前期研究建立的数据驱动的污染物快速预测模型，可以获得颗粒物时空分布的预测。过滤过度污染期可产生空气质量综合潜力。对案例研究建筑的不同分析场景下的自然通风潜力进行了比较。更炎热的气候和更频繁的热浪降低了潜力。基于形态的电势明显低于使用恒定通风率的设计预期。城市空气质量恶化也直接限制了通风的使用，大大降低了恶劣条件下过滤的潜力。通过捕获复杂的环境相互作用，这项研究提供了一个强大的平台来揭示本地化的潜力和局限性。