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Perceived indoor air quality in naturally ventilated primary schools in the UK: Impact of environmental variables and thermal sensation
Indoor Air ( IF 4.3 ) Pub Date : 2020-09-07 , DOI: 10.1111/ina.12740
Sepideh Sadat Korsavi 1 , Azadeh Montazami 1 , Dejan Mumovic 2
Affiliation  

Indoor air quality (IAQ) in classrooms has a significant impact on children's academic performance, health, and well‐being; therefore, understanding children's perception of IAQ is vital. This study investigates how children's perception of IAQ is affected by environmental variables and thermal sensation. In total, 29 naturally ventilated classrooms in eight UK primary schools were selected and 805 children were surveyed during non‐heating and heating seasons. Results show that air sensation votes (ASVs) are more correlated to CO2 levels than to operative temperatures (Top) during non‐heating seasons and more correlated to Top than CO2 levels during heating seasons. The impact of Top on ASVs decreases with an increase in CO2 levels, and the effect of CO2 levels on ASVs decreases with increase in Top. The most favorable ASVs are given when children feel “cool” and have “as it is” preference. By keeping CO2 < 1000 ppm and Top within children's thermal comfort band, ASVs are improved by 43%. The study recommends that standards should consider the impact of both temperature and CO2 levels on perceived IAQ. Perception of IAQ also affects children's overall comfort and tiredness levels; however, this influence is more significant on tiredness level than that on overall comfort level.

中文翻译:

英国自然通风小学的室内空气质量感知:环境变量和热感觉的影响

教室的室内空气质量 (IAQ) 对儿童的学业成绩、健康和幸福感有显着影响;因此,了解儿童对室内空气质量的看法至关重要。这项研究调查了儿童对室内空气质量的看法如何受到环境变量和热感觉的影响。总共选择了 8 所英国小学的 29 个自然通风教室,在非取暖和取暖季节对 805 名儿童进行了调查。结果表明,在非供暖季节,空气感觉投票 (ASV) 与 CO 2水平的相关性比与工作温度 (T op ) 的相关性更高,而在供暖季节与 T op 的相关性高于 CO 2水平。T op的影响对ASVs 的影响随着CO 2水平的增加而降低,并且CO 2水平对ASVs 的影响随着T op 的增加而减少。当孩子们感觉“很酷”并且有“原样”的偏好时,就会给予最有利的 ASV。通过将 CO 2  < 1000 ppm 和 T op 保持在儿童的热舒适范围内,ASV 提高了 43%。该研究建议标准应考虑温度和 CO 2水平对感知 IAQ 的影响。对室内空气质量的感知也会影响儿童的整体舒适度和疲劳程度;然而,这种影响对疲劳程度的影响比对整体舒适程度的影响更显着。
更新日期:2020-09-07
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