Indoor air quality during sleep under different ventilation patterns

Canha, Nuno; Lage, Joana; Candeias, Susana; Alves, Célia; Almeida, Susana Marta

doi:10.1016/j.apr.2017.05.004

Cited by 78 publications

(50 citation statements)

References 49 publications

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“…This has been clearly demonstrated in a recent study in which the impact of different ventilation conditions on the indoor air quality during sleep was evaluated [13]. The condition with the window and door closed contributed most to the exceedances of limit values imposed for several pollutants (e.g., VOC, PM 2.5 , and CO 2 ).…”

Section: Discussionmentioning

confidence: 82%

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Impact of Biomass Home Heating, Cooking Styles, and Bread Toasting on the Indoor Air Quality at Portuguese Dwellings: A Case Study

et al. 2018

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This study evaluated the emissions of specific indoor sources usually present in Portuguese dwellings in order to understand their impact on the indoor air quality. With this aim, three typical activities were studied including home heating using two types of fireplaces (open and closed) and biofuels (pinewood and briquettes), cooking styles (frying and boiling) in different types of kitchen appliances, and several levels of bread toasting. The levels of specific pollutants were found to be above the established Portuguese limit values including VOCs, formaldehyde, and particulate matter (PM 2.5 and PM 10 ). Although these emissions are transient and short in duration, the resulting concentrations are high and can severely impact the occupants' daily exposure. Besides promoting good ventilation, the choice of residential appliances with low emissions should be taken into account. In addition, it is important that occupants perform specific activities following the best practices so that their exposure to pollutants is minimized.

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Section: Discussionmentioning

confidence: 82%

“…Therefore, considering only one micro-environment is not representative of the daily overall exposure. Understanding the individuals' exposure during the different periods of the day in specific micro-environments is fundamental for providing a real and an integrated assessment [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Impact of Biomass Home Heating, Cooking Styles, and Bread Toasting on the Indoor Air Quality at Portuguese Dwellings: A Case Study

et al. 2018

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“…Sleeping environments often suffer from poorer ventilation rates as compared to our typical living environments . Sleep microenvironment comprises of the pillow, mattress, bedding materials, etc., and the air volume trapped between the covers and the body of the person sleeping.…”

Section: Introductionmentioning

confidence: 99%

“…Sleep microenvironment comprises of the pillow, mattress, bedding materials, etc., and the air volume trapped between the covers and the body of the person sleeping. This is the environment which potentially contains a diverse profile of pollutants and to which we are all exposed to for nearly a third of our life, creating significant exposure risks . The importance of bedroom ventilation on overall exposure to CO 2 has been highlighted in some recent studies.…”

Section: Introductionmentioning

confidence: 99%

“…6,7 Sleeping environments often suffer from poorer ventilation rates as compared to our typical living environments. 8 Sleep microenvironment comprises of the pillow, mattress, bedding materials, etc., and the air volume trapped between the covers and the body of the person sleeping. This is the environment which potentially contains a diverse profile of pollutants and to which we are all exposed to for nearly a third of our life, creating significant exposure risks.…”

Section: Introductionmentioning

confidence: 99%

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Window/door opening-mediated bedroom ventilation and its impact on sleep quality of healthy, young adults

et al. 2017

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This work examined window/door opening as means of bedroom ventilation and the consequent effect upon occupants' sleep, using data from 17 healthy volunteers. Bedroom CO level, temperature, and relative humidity were measured over 5 days, for two cases: open window or door (internal, bedroom door), and closed window and door. Participant filled questionnaires and sleep diary provided subjective measure of sleep quality. Actigraphy objectively monitored the participants during sleep. Additionally, a FlexSensor, placed under pillows of participants, detected movement during sleep. Average CO level for the Open conditions was 717 ppm (SD = 197 ppm) and for Closed conditions was 1150 ppm (SD = 463 ppm). Absolute humidity levels were similar for both conditions, while Open conditions were slightly cooler (mean = 19.7°C, SD = 1.8°C) than Closed (mean = 20.1°C, SD = 1.5°C). Results showed significant correlations (P < .001) between actigraphy data and questionnaire responses for: sleep latency (r = .45), sleep length (r = .87), and number of awakenings (r = .28). Of all analyzed sleep parameters, questionnaire-based depth of sleep (P = .002) and actigraphy-based sleep phase (P = .003) were significantly different between Open and Closed conditions.

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Implications of a Natural Ventilation Retrofit of an Office Building

Manga

Allen

2021

Climate Emergency – Managing, Building , and Delivering the Sustainable Development Goals

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Indoor air quality during sleep under different ventilation patterns

Cited by 78 publications

References 49 publications

Impact of Biomass Home Heating, Cooking Styles, and Bread Toasting on the Indoor Air Quality at Portuguese Dwellings: A Case Study

Impact of Biomass Home Heating, Cooking Styles, and Bread Toasting on the Indoor Air Quality at Portuguese Dwellings: A Case Study

Window/door opening-mediated bedroom ventilation and its impact on sleep quality of healthy, young adults

Implications of a Natural Ventilation Retrofit of an Office Building

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