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首页> 外文会议>Joint annual meeting of the International Society of Exposure Science and the International Society for Environmental Epidemiology >Acceptable Indoor Air Quality in Childcare Centres is Achievable Even During Haze Period
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Acceptable Indoor Air Quality in Childcare Centres is Achievable Even During Haze Period

机译：即使在阴霾期间，儿童保育中心的可接受的室内空气质量也是可实现的

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Singapore has experienced instances of poor outdoor air quality due to recurring transient periods of transboundary haze from forest fires in the region. Elevated particulate matter (PM) levels during haze can compromise indoor air quality (IAQ) and have respiratory-related health effects in adults and children. To understand the impact of haze on Singapore's childcare centres, four case studies were conducted during the 2015 haze episode at three centres served by centralized air-conditioning systems and one naturally ventilated centre. Among the three air-conditioned centres, one centre was found to have time-weighted- average PM 2.5 and C02 levels that exceeded the respective acceptable limits (specified by the Singapore Standard Code of Practice for IAQ in Air-Conditioned Buildings, SS554:2016). Subsequent measurements during a non-haze period showed PM 2.5 levels reduced by 33% and within acceptable limits, although C02 levels still exceeded the acceptable limits. Data suggested poor IAQ due to inefficient filtration of air supply with inadequate ventilation. In contrast, both C02 levels and PM 2.5 levels were within the acceptable limits at another centre, even during the haze period. The results from this centre shows how best practices of maintaining adequate ventilation and use of particulate filters of at least MERV 14 efficiency can provide good IAQ for occupants even during haze period in Singapore. For naturally ventilated centres, it is common to keep windows closed during haze and manage thermal comfort by the use of portable air-conditioners. In the centre we studied, PM 2.5 levels exceeded the acceptable limits during haze, despite closure of doors and windows, as gaps in openings are usually unavoidable. These case studies showed that air quality in childcare centres could be compromised during haze. However, a combined strategy of adequate ventilation and effective air cleaning could help achieve good IAQ, even during the haze period.
机译：新加坡由于该地区森林火灾的跨界阴霾的经常性瞬态阴霾而经历了差的户外空气质量的情况。雾化期间的颗粒物质（PM）水平可以损害室内空气质量（IAQ）并在成人和儿童中具有呼吸相关的健康效果。要了解雾霾对新加坡的儿童保育中心的影响，在集中空调系统和一个自然通风中心服务的三个中心的2015年雾霾事件中进行了四种案例研究。在三个空调中心中，一个中心被发现有时间加权平均PM 2.5和C02水平，超过了各自可接受的限制（由新加坡标准的IAQ指定的IAQ在空调建筑物中，SS554：2016 ）。在非阴霾周期期间的随后测量显示PM 2.5水平减少了33％，并且在可接受的限度内，尽管CO 2水平仍然超过可接受的限制。由于空气供应效率低，通风不足，数据建议差IAQ。相比之下，即使在阴霾期间，CO 2水平和PM 2.5水平也在另一个中心的可接受限度内。该中心的结果表明，即使在新加坡的阴霾期间，也可以为至少MER5的颗粒过滤器维持足够通风和使用颗粒过滤器的最佳实践如何为乘员提供良好的IAQ。对于自然通风的中心，通常会使窗户保持在雾霾期间封闭，并通过使用便携式空调来管理热舒适度。在我们学习的中心，尽管门窗闭合，PM 2.5级别超过了雾霾期间的可接受限制，因为开口的间隙通常是不可避免的。这些案例研究表明，在雾度期间，儿童保育中心的空气质量可能会受到损害。然而，即使在阴霾期间，足够通风和有效空气清洁的合并策略也可以帮助实现良好的IAQ。

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