{"title":"Indoor air quality during sleep in university dormitories: exploring the impact of various ventilation patterns","authors":"Jiachen Zheng, Hanmo Wang, Xiaojun Zhou","doi":"10.1007/s11869-024-01673-5","DOIUrl":null,"url":null,"abstract":"<div><p>The quality of sleep is significantly important for human health. However, the importance of air quality during sleep, particularly, in high-density residential settings, such as dormitories, has been insufficiently addressed. This study aims to assess the coupled effect of ventilation modes and air change rate (ACH) on indoor air quality (IAQ) within sleeping environments in university dormitories and to identify effective ventilation patterns to fill the research gap. To comprehensively examine their combined effects on the sleep environment, several representative dormitories at a northern Chinese university were evaluated during winter. The concentration variation of indoor pollutants in the sleep environment under natural ventilation conditions was monitored, revealing that the indoor air quality significantly deteriorated during sleep. Furthermore, a numerical model was developed to study the effect of different mechanical ventilation patterns on the improvement of sleep microenvironment. The results indicated that the local air supply system with ACH = 2 was identified as providing superior air quality, successfully addressing the limitations of the ceiling air supply system and upper air supply system. We successfully investigated the coupled effects of ventilation mode and ACH on sleep IAQ, which can provide a theoretical basis and guidance for the study of a complete sleep IAQ improvement program. Further studies show that bed curtains can affect the distribution characteristics of indoor pollutants, and the design of ventilation system should focus on the influence of bed curtains on air flow organization in future research.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 3","pages":"727 - 742"},"PeriodicalIF":2.9000,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Air Quality Atmosphere and Health","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s11869-024-01673-5","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
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Abstract
The quality of sleep is significantly important for human health. However, the importance of air quality during sleep, particularly, in high-density residential settings, such as dormitories, has been insufficiently addressed. This study aims to assess the coupled effect of ventilation modes and air change rate (ACH) on indoor air quality (IAQ) within sleeping environments in university dormitories and to identify effective ventilation patterns to fill the research gap. To comprehensively examine their combined effects on the sleep environment, several representative dormitories at a northern Chinese university were evaluated during winter. The concentration variation of indoor pollutants in the sleep environment under natural ventilation conditions was monitored, revealing that the indoor air quality significantly deteriorated during sleep. Furthermore, a numerical model was developed to study the effect of different mechanical ventilation patterns on the improvement of sleep microenvironment. The results indicated that the local air supply system with ACH = 2 was identified as providing superior air quality, successfully addressing the limitations of the ceiling air supply system and upper air supply system. We successfully investigated the coupled effects of ventilation mode and ACH on sleep IAQ, which can provide a theoretical basis and guidance for the study of a complete sleep IAQ improvement program. Further studies show that bed curtains can affect the distribution characteristics of indoor pollutants, and the design of ventilation system should focus on the influence of bed curtains on air flow organization in future research.
期刊介绍：
Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health.
It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes.
International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals.
Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements.
This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.
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