办公环境中的空气加湿与室内空气质量感知
Humidification and perceived indoor air quality in the office environment.
作者信息
Reinikainen L M, Aunela-Tapola L, Jaakkola J J
机构信息
Department of Public Health, University of Helsinki, Finland.
出版信息
Occup Environ Med. 1997 May;54(5):322-7. doi: 10.1136/oem.54.5.322.
OBJECTIVE
To evaluate the effect of humidification on the odour, acceptability, and stuffiness of indoor air.
METHODS
In a six period cross over trial at the Pasila Office Center, Helsinki, the air of two wings of the building in turn were ventilated with air of 30%-40% humidity. A third wing served as a non-humidified control area. The quality of indoor air was assessed weekly by a panel containing 18 to 23 members. The intraindividual differences in the ratings for odour, stuffiness, and acceptability between humidified and non-humidified wings were used to assess the effect of humidification. The roles of sex, current smoking, and age as potential effect modifiers were assessed by comparing the mean intraindividual differences in ratings between the groups.
RESULTS
Humidified air was found to be more odorous and stuffy (paired t test P = 0.0001) and less acceptable than the non-humidified air (McNemar's test P < 0.001). The differences in odour and stuffiness between humidified and non-humidified air were greater for women and for non-smokers, and greatest differences were in the youngest age group, and least in the oldest age group. The differences were not significant.
CONCLUSIONS
An untrained panel of 20 members is able to differentiate a slight malodour and stuffiness in indoor air. The results suggest that steam air humidification decreases the perceived air quality. This effect is strongest in women and young subjects.
目的
评估空气加湿对室内空气气味、可接受性和闷塞感的影响。
方法
在赫尔辛基帕西拉办公中心进行的一项六阶段交叉试验中，该建筑两翼的空气依次用湿度为30%-40%的空气进行通风。第三翼作为未加湿的对照区域。由18至23名成员组成的小组每周对室内空气质量进行评估。通过比较加湿翼和未加湿翼在气味、闷塞感和可接受性评分上的个体内差异来评估加湿的效果。通过比较各组评分的平均个体内差异，评估性别、当前吸烟状况和年龄作为潜在效应修饰因素的作用。
结果
发现加湿后的空气比未加湿的空气气味更大、更闷（配对t检验P = 0.0001），且可接受性更低（麦克尼马尔检验P < 0.001）。加湿空气和未加湿空气在气味和闷塞感上的差异在女性和非吸烟者中更大，在最年轻年龄组中差异最大，在最年长年龄组中差异最小。这些差异不显著。
结论
一个由20名成员组成的未经训练的小组能够区分室内空气中的轻微异味和闷塞感。结果表明，蒸汽空气加湿会降低感知到的空气质量。这种影响在女性和年轻受试者中最为明显。
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