An innovative fan control strategy aimed at responding to human physiological characteristics for comfort sleeping

Yu, Wei; Zhang, Yan; Du, Chenqiu; Li, Baizhan; Liu, Hong; Zhang, Yue; Wei, Shen

doi:10.1016/j.tsep.2022.101470

Cited by 3 publications

(2 citation statements)

References 55 publications

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“…Under these circumstances, methods to both save energy and improve thermal comfort have been explored, such as a personalized ventilation system. In China, electric fans are widely accepted as an effective method to improve the thermal environment and save energy in summer [23,24]. In a study conducted by He et al [24], the fan-use rate was 80% at the environmental temperature of 30 • C.…”

Section: Of 18mentioning

confidence: 99%

“…Irshad K. et al [26] conducted a field study on sleeping comfort in a test chamber with a thermoelectric air-cooling system. The results show that the subjects felt comfortable and had a better sleep quality in a thermoelectrically cooled room at a power input of 720 W. Yu et al [23] studied the proper electric fan control strategy in summer sleep thermal environments. The results indicate that the dynamic air supply control strategy of the fan, which was stabilizing-falling-stabilizing-rising-stabilizing, can improve sleep quality.…”

Section: Of 18mentioning

confidence: 99%

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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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Section: Of 18mentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

Optimizing bedroom thermal environment: A review of human body temperature, sleeping thermal comfort and sleep quality

Lian

2024

Energy and Built Environment

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Simulation Study on Geometric Parameters Influencing the Flow Coefficient of Perforated Plate

et al. 2023

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Natural ventilation is one of the vital means for passive energy-efficient design in green buildings. As a widely used building façade, the perforated plate is mostly utilized for appearance decoration, noise absorption, and sun shading, but its impact on the natural ventilation effect has rarely been paid attention to. In this study, the influence of the perforation rate, the perforation size, and the perforation shape on the flow coefficient of the perforated plate were simulated using the commercial CFD software Fluent, and the correlation between the flow coefficient and these geometric parameters was then regressed. The results show that the flow coefficient of perforated plate increases with the increase in perforation rate, which is slightly greater than that of ordinary building openings, and the corresponding flow coefficients of different holes rank as circle > square > triangle under the same conditions. The flow coefficient increases with the increase in the perforation size, and this effect is greater when the size is small. In addition, the flow coefficient is less affected by the size of round holes compared to triangular and square holes. The regression model indicates that both the perforation rate and the perforation size have a considerable positive influence on the flow coefficient, while the square and triangle holes have a negative influence on the flow coefficient compared with the circular hole. Moreover, the geometric parameters of perforated plates that have the greatest influence on flow coefficient are perforation rate, perforation shape, and size, in descending order.

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An innovative fan control strategy aimed at responding to human physiological characteristics for comfort sleeping

Cited by 3 publications

References 55 publications

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

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

Optimizing bedroom thermal environment: A review of human body temperature, sleeping thermal comfort and sleep quality

Simulation Study on Geometric Parameters Influencing the Flow Coefficient of Perforated Plate

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