Results 8 resources
Perceived air quality and cognitive performance decrease at moderately raised indoor temperatures even when clothed for comfortLan, L., Xia, L., Hejjo, R., … Wargocki, P. - 2020 - Indoor Air, 30(5), 841–859
Cognitive performance was reduced by higher air temperature even when thermal comfort was maintained over the 24–28°C rangeLan, L., Tang, J., Wargocki, P., … Lian, Z. - 2022 - Indoor Air, 32(1)
This study managed to create thermal comfort conditions at three temperatures (24°C-T24, 26°C-T26, and 28°C-T28) by adjusting clothing and air velocity. Thirty- six subjects (18 males and 18 females) were exposed to each of the three conditions for 4.5 h in a design balanced for order of presentation of conditions. During each exposure, they rated the physical environment, their comfort, the intensity of acute subclinical health symptoms, and their mental load, and they performed a...
A survey of bedroom ventilation types and the subjective sleep quality associated with them in Danish housingLiao, C., Akimoto, M., Bivolarova, M. P., … Wargocki, P. - 2021 - Science of The Total Environment, 798, 149209
We performed a survey of the types of bedroom ventilation in Danish dwellings (January–February 2020) and the associated subjective sleep quality. Five hundred and seventeen people responded. Their median age was 33 years old and 55.4% of them were males. We used an online questionnaire and collected information on the type of bedroom ventilation, bedroom airing behaviour by the respondents, the bedroom environment, building surroundings and location, and sleep disturbance caused by stuffy...
Effects of airing behaviours on bedroom air pollutants during sleepLiao, C., Fan, X., Petrova Bivolarova, M., … Wargocki, P. - 2022 - CLIMA 2022 Conference, 2022: CLIMA 2022 The 14th REHVA HVAC World Congress
Higher ventilation rates were verified to have a positive impact on indoor air quality and therefore benefit sleep quality. However, how does ventilation influence bedroom air quality if the outdoor air quality is poor? Whilst ventilation helps to reduce indoor pollution it inadvertently brings outdoor pollution indoors, such as NO2, which is from vehicular emission. In this study, we collected the info of window and door status during sleep and measured carbon dioxide (CO2), nitrogen...
The effects of ventilation and temperature on sleep quality and next-day work performance: pilot measurements in a climate chamberFan, X., Shao, H., Sakamoto, M., … Wargocki, P. - 2022 - Building and Environment, 209, 108666
Ten healthy young adults slept one by one in a specially designed and constructed sleep capsule located in a climate chamber at two temperatures (24 °C and 28 °C) and two ventilation rates that ensured that the resulting CO2 concentrations were 800 and 1700 ppm. Subjectively rated sleep quality was reduced at 28 °C and reduced ventilation, while sleep onset latency was longer under these conditions. Sleep efficiency was lower at 28 °C. Subjectively rated fatigue and sleepiness decreased...
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