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Regional difference and related cooling electricity savings of air pollutant affected natural ventilation in commercial buildings across the US

机译：空气污染物的区域差异和相关的冷却电力节省影响了全美国商业建筑的自然通风

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Maintaining indoor air pollutants under acceptable levels is significant to protect occupants from exposure to excessive air pollutants in natural ventilation. In this paper, using the representative air pollutant concentration data, we present the natural ventilation usability with associated cooling energy saving potentials in different location settings (urban and city center, suburban and rural) of the US under the influence of local weather conditions and major outdoor air pollutants, i.e. PM2.5, PM10 and ozone. It is found that the impacts of air pollutants on natural ventilation are usually higher in urban/suburban areas than rural areas (up to 25% difference) with the PM2.5 being the most significant outdoor air pollutant affecting natural ventilation usage. Ozone could become increasingly influential on natural ventilation as moving from urban to suburban/rural areas. As to the cooling energy saving considering the impacts of outdoor air pollutants, natural ventilation is estimated to save approximately 10%-40% cooling energy (800-2600 kWh per small commercial building) annually in different location settings of investigated areas across the US. The following economic analysis demonstrates that these electricity savings lead to approximately 80-540 dollars annual savings of building operation cost per building. If the time of use rate is adopted, these cost savings could further increase by approximately 20% (Los Angeles) to more than 50% (Albuquerque) depending on different rate structures, which further demonstrates the potential of adopting natural ventilation as a sustainability measurement with benefits for building owners without compromising occupants health.
机译：将室内空气污染物保持在可接受的水平对防止乘员在自然通风中暴露于过量的空气污染物具有重要意义。在本文中，使用代表性的空气污染物浓度数据，我们介绍了在当地不同天气条件和主要环境影响下，美国不同位置设置（城市和市中心，郊区和农村）的自然通风可用性以及相关的冷却节能潜力室外空气污染物，例如PM2.5，PM10和臭氧。研究发现，城市/郊区的空气污染物对自然通风的影响通常比农村地区高（差异高达25％），其中PM2.5是影响自然通风使用的最重要的室外空气污染物。随着臭氧从城市转移到郊区/农村，臭氧对自然通风的影响可能会越来越大。考虑到室外空气污染物的影响，在冷却节能方面，据估计，在美国被调查区域的不同位置设置中，自然通风每年可节省约10％-40％的冷却能源（每座小型商业建筑800-2600 kWh）。以下经济分析表明，这些节电措施每年可为每座建筑物节省约80-540美元的建筑物运营成本。如果采用使用时间率，则根据不同的费率结构，这些成本节省可能会进一步增加约20％（洛杉矶）至50％（阿尔伯克基），这进一步证明了采用自然通风作为可持续性衡量的潜力在不损害居住者健康的前提下为建筑物所有者带来好处。

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