PDF(Pubmed)
Abstract：
Background Airports are hubs of diverse human interactions. During pandemics, they may serve as centers for the spread of airborne infection. Appropriate methods for the prevention of the spread of airborne infections must be integrated into the air conditioning systems of airports. Along with ultraviolet germicidal irradiation and other sanitization methods, dilution ventilation can be the easiest and most available method for the prevention of airborne infection, which means the intake of outside air into the indoors, which flushes out the aerosolized droplets containing pathogens. Though this process has been adopted by multiple buildings in reaction to the pandemic, it may present the challenge of intake of high concentration of suspended particulate matter in the intake air, a major air pollutant in developing countries, which may enter through the air conditioning systems. Appropriate filtration is necessary so that along with dilution ventilation for airborne disease prevention, the risk of suspended particulate matter of diameter 2.5 micron or PM2.5 induced lung issues is also reduced. Methodology The Right to Information Act, 2005, was used to file applications for information on the details of the air conditioning systems in Indian airports. The 58 airports in the study were also listed according to the list of cities that fall under the criteria for non-attainment of good air quality standards. Results Out of 58 airports considered, 27 fell in the \'non-attainment\' of good air quality list. On appraisal of filter systems, it was found that 23 had an intake of fresh air but only five had filters with a minimum efficiency reporting value (MERV) of 10 and above in their air conditioning systems, as is recommended for filtration of suspended particulate matter. Conclusion It can be concluded that most airports did not have the appropriate filter required for filtering PM2.5, which is a major pollutant in Indian cities. In light of coronavirus disease 2019, where dilution ventilation through the intake of outdoor air is suggested, it may also lead to the entry of air with high particulate matter into the indoors.
摘要：
背景技术机场是各种人类互动的枢纽。在大流行期间，它们可以作为空气传播感染的中心。必须将预防空气传播感染传播的适当方法纳入机场的空调系统。随着紫外线杀菌照射和其他消毒方法，稀释通气可能是预防空气传播感染的最简单和最可用的方法，这意味着外部空气进入室内，冲洗含有病原体的雾化液滴。尽管这一过程已被多个建筑物采用，以应对大流行，它可能会对吸入空气中高浓度的悬浮颗粒物提出挑战，发展中国家的主要空气污染物，它可以通过空调系统进入。适当的过滤是必要的，以便与稀释通气一起预防空气传播疾病，直径2.5微米的悬浮颗粒物或PM2.5引起肺部问题的风险也降低。信息权法案的方法论，2005年，用于提交有关印度机场空调系统详细信息的申请。研究中的58个机场也根据未达到良好空气质量标准的城市名单列出。结果在考虑的58个机场中，27人落在“未达到”的良好空气质量列表中。关于过滤系统的评估，发现有23个吸入了新鲜空气，但只有五个在其空调系统中具有最低效率报告值（MERV）为10及以上的过滤器，如建议用于过滤悬浮颗粒物。结论可以得出结论，大多数机场没有过滤PM2.5所需的适当过滤器，PM2.5是印度城市的主要污染物。鉴于2019年冠状病毒病，建议通过室外空气进气进行稀释通风，它还可能导致含有高颗粒物的空气进入室内。
