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Thermal comfort and IAQ. characteristics of naturally/mechanically ventilated and air-conditioned bedrooms in a hot and humid climate

机译:热舒适性和室内空气质量。湿热气候下自然/机械通风和空调卧室的特点

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摘要

The characteristics of thermal comfort and indoor air quality (IAQ) in bedrooms, occupants' perceptions and their impact on sleep quality are not often studied. It becomes even more interesting if climatic conditions allow Naturally/Mechanically Ventilated (NMV) concepts as opposed to Air-conditioning (AC) and this becomes very significant from an energy perspective. This paper reports our findings from such a study conducted in a hot and humid climate. Objective measurements of thermal comfort and IAQ were carried out during sleeping period in 12 NMV and 12 AC bedrooms over a period of 2 months. Questionnaire responses were sought from each subject at the end of the objective measurements to assess their perceptions on thermal comfort and indoor air quality of the bedrooms during sleep and their sleeping conditions. Although the "Historical" and "Immediate" responses for the NMV and AC bedrooms indicate that there was a good level of acceptability for both Thermal Comfort and Perceived Air Quality (PAQ), it was found that NMV bedroom was a better sleeping environment. The subjects' immediate perception of PAQ and thermal comfort were reasonably correlated with their historical perceptions. The subjects' perception of PAQ was fairly closely correlated to their perception of Thermal Comfort. There was a considerable increase in the carbon dioxide level in an AC bedroom relative to a NMV bedroom. However, there was no clear evidence to substantiate that sleeping duration decreased with increasing level of carbon dioxide, but the findings do suggest that high level of carbon dioxide may hinder the duration of sleep.
机译:人们并不经常研究卧室的热舒适性和室内空气质量(IAQ)的特征,乘员的感知及其对睡眠质量的影响。如果气候条件允许自然/机械通风(NMV)概念而不是空调(AC),这将变得更加有趣,并且从能源的角度来看,这变得非常重要。本文报告了我们在高温高湿气候下进行的这项研究的发现。在睡眠期间,在12个NMV和12个AC卧室中进行了为期2个月的热舒适度和IAQ的客观测量。在客观测量结束时,从每个受试者中获取问卷调查表,以评估他们对卧室在睡眠期间及其睡眠条件下的热舒适度和室内空气质量的看法。尽管NMV和AC卧室的“历史”和“立即”响应表明,热舒适性和感知空气质量(PAQ)的接受度都很高,但是发现NMV卧室是一个更好的睡眠环境。受试者对PAQ和热舒适度的即时感知与他们的历史感知合理相关。受试者对PAQ的感知与他们对热舒适的感知密切相关。与NMV卧室相比,AC卧室中的二氧化碳含量显着增加。但是,没有明确的证据可以证明睡眠时间随二氧化碳水平的升高而降低,但是研究结果确实表明,二氧化碳水平高可能会阻碍睡眠时间。

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