A model developed for predicting thermal comfort during sleep in response to appropriate air velocity in warm environments

Du, Chenqiu; Lin, Xiao; Yan, Ke Qin; Liu, Hong; Yu, Wei; Zhang, Yue; Li, Baizhan

doi:10.1016/j.buildenv.2022.109478

Cited by 12 publications

(4 citation statements)

References 44 publications

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“…Analyses in the summer using a climate chamber were carried out in China [67]. The authors examined the sleep of 24 people and the influence of changing climatic conditions in terms of air temperature (28/30/32 • C), relative humidity (50/80%), and air velocity (0.39/0.69/1.17 m/s).…”

Section: Thermal Comfort Ventilation and Quality Of Sleepmentioning

confidence: 99%

“…Ansys Fluent or Solidworks software were used for simulations, whereas in cases where experiments were conducted, the authors performed field tests in one building up to a maximum of three rooms within one study [65,[69][70][71]74]. Cases in which the measurements took place in a climatic chamber prevail [67].…”

Section: Bedroomsmentioning

confidence: 99%

“…Research on thermal comfort in bedrooms and while sleeping is carried out all over the world, and their results usually refer to specific climatic conditions. The ones discussed concerned the summer period [65,67] and heating seasons [68][69][70][71][72][73] or did not specify the period of the year due to the nature of the analyses conducted (influence of air movement). Both types of ventilation were present in correspondingly reviewed papers, but part of the research took place in a laboratory.…”

Section: Bedroomsmentioning

confidence: 99%

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Recent Achievements in Research on Thermal Comfort and Ventilation in the Aspect of Providing People with Appropriate Conditions in Different Types of Buildings—Semi-Systematic Review

Ratajczak,

Amanowicz,

Pałaszyńska

et al. 2023

Energies

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Ventilation systems are mainly responsible for maintaining the quality of indoor air. Together with thermal comfort maintenance systems, they create appropriate conditions for living, working, learning, sleeping, etc., depending on the type of building. This explains the high popularity of research in this area. This paper presents a review of articles published in the years 2020–2023, which are indexed in the Scopus database and found with keywords “ventilation” and “thermal comfort” in conjunction with the type of building or predominant activity. Finally, 88 selected works for five types of buildings were discussed, namely offices, schools, hospitals, bedrooms, and atriums. Data on publications are summarized in the tables, taking into account the publishing year, country of origin of the authors, and keywords. In this way, the latest directions in research were presented, and research groups dealing with this subject were highlighted. For each type of building, synthetic conclusions were presented, summarizing the results of the analyzed research. This review paper would be helpful for scientists and practitioners in the field of ventilation in order to organize knowledge and in a short time be up to date with the latest research showing how ventilation affects the quality of use of buildings by their users.

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Section: Thermal Comfort Ventilation and Quality Of Sleepmentioning

confidence: 99%

Section: Bedroomsmentioning

confidence: 99%

Section: Bedroomsmentioning

confidence: 99%

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Recent Achievements in Research on Thermal Comfort and Ventilation in the Aspect of Providing People with Appropriate Conditions in Different Types of Buildings—Semi-Systematic Review

Ratajczak,

Amanowicz,

Pałaszyńska

et al. 2023

Energies

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“…The results indicate that the dynamic air supply control strategy of the fan, which was stabilizing-falling-stabilizing-rising-stabilizing, can improve sleep quality. Another similar study found that when the indoor temperature was below 32 • C, providing appropriate air velocities could alleviate the thermal discomfort of occupants during sleep [27]. Furthermore, He et al [24,28] conducted a series of experiments on subjects' thermal comfort with desk fans in a hot-humid environment.…”

Section: Of 18mentioning

confidence: 99%

An Experimental Study on Human Thermal Comfort with Thermal-Conductive Bed during Sleep in Summer

Hu,

Hao,

Huang

et al. 2023

Buildings

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Sleep is vital for human health, while sleep quality is affected by indoor thermal environments. This study aims to investigate human thermal comfort with a thermal-conductive bed during sleep in summer. A series of experiments were conducted in a climatic chamber of a university. Subjects slept on a thermal-conductive bed, with or without the supply of water cooling them by flowing through the pipes embedded in the bed. The supply water was set at 20, 25, 28, and 30 °C. The indoor temperature was set at 32 °C. The bed surface temperature (back, buttock, thigh, and calf) and the subject’s skin temperature were measured. Questionnaires after waking up the next morning were conducted. The results show that when there was no water supply in the pipes of the thermal-conductive bed, the bed surface temperature was 0–1.5 °C higher than the indoor temperature, and subjects felt slightly warm. When the supply water temperature was 28 or 30 °C, subjects felt thermally comfortable during a night’s sleep. This study demonstrates that the proposed thermal-conductive bed with supply water temperatures of 28–30 °C can create a comfortable sleep environment for residents who have no air-conditioning systems in summer, which can also help save building energy.

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Non-contact determination of sleep/wake state in residential environments by neural network learning of microwave radar and electroencephalogram–electrooculogram measurements

Wang¹,

Matsushita²

2023

Building and Environment

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A model developed for predicting thermal comfort during sleep in response to appropriate air velocity in warm environments

Cited by 12 publications

References 44 publications

Recent Achievements in Research on Thermal Comfort and Ventilation in the Aspect of Providing People with Appropriate Conditions in Different Types of Buildings—Semi-Systematic Review

Recent Achievements in Research on Thermal Comfort and Ventilation in the Aspect of Providing People with Appropriate Conditions in Different Types of Buildings—Semi-Systematic Review

An Experimental Study on Human Thermal Comfort with Thermal-Conductive Bed during Sleep in Summer

Non-contact determination of sleep/wake state in residential environments by neural network learning of microwave radar and electroencephalogram–electrooculogram measurements

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