Bayesian updates for indoor thermal comfort models

Mui, Kwok Wai; Tsang, Tsz-Wun; Wong, Ling Tim

doi:10.1016/j.jobe.2019.101117

Cited by 22 publications

(12 citation statements)

References 97 publications

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“…The sequential steps regarding duration, metabolic rate, clothing, air temperature, radiant temperature, air speed, indoor humidity, and thermal properties of the contact surface, are simulated for 16 body segments, and the corresponding Equivalent Homogeneous Temperatures (EHT) are used for comfort predictions. The CBE model can identify local thermal disturbances, and is applicable to transient non-uniform thermal environments [47].…”

Section: Ppd Pmv Rangementioning

confidence: 99%

Experimental Study and Analysis of Thermal Comfort in a University Campus Building in Tropical Climate

et al. 2020

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This study presents the evaluation of the performance and acceptability of thermal comfort by students in the classrooms of a university building with minisplit-type air-conditioning systems, in a tropical climate. To carry out the study, temperature and humidity measurements were recorded, both outside and inside the selected classrooms, while the students were asked to complete thermal surveys on site. The survey model is based on the template proposed by Fanger and it was applied to a total number of 584 students. In each classroom, the Predicted Mean Vote (PMV) and the Predicted Percentage Dissatisfied (PPD) were estimated according to Fanger’s methodology, as well as the Thermal Sensation Vote (TSV) and the Actual Percentage Dissatisfied (APD), which were obtained from the measurements and the surveys. The results of this study showed that the PMV values, although they may vary with the insulation of the clothing, do not affect the TSV. Furthermore, comparing PMV vs. TSV scores, a 2 °C to 3 °C difference in operating temperature was found, whereby the thermal sensitivity for TSV was colder, so it could be assumed that the PMV model overestimates the thermal sensitivity of students in low-temperature conditions. In addition, an acceptability by 90% with thermal preferences between 23 °C and 24 °C were also found. These results indicate that it is possible to increase the temperature set point in minisplit-type air-conditioning system from 4 °C to 7 °C with respect to the currently set temperatures, without affecting the acceptability of the thermal environment to the students in the building.

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Section: Ppd Pmv Rangementioning

confidence: 99%

Experimental Study and Analysis of Thermal Comfort in a University Campus Building in Tropical Climate

et al. 2020

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“…When high IEQ conditions are achieved, occupants would have a high level of comfort. 7 Relevant literature has shown that the indoor environment has a direct impact on the health of residents. For example, a bad indoor environment would lead to long-term health problems and reduce the happiness index.…”

Section: Introductionmentioning

confidence: 99%

Effects of different environment combinations on the comfort and productivity of researchers in winter

Kim

2022

Indoor and Built Environment

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Indoor environmental quality is considered an important indicator of the sustainable development of architecture. It not only reflects the comfort level of occupants in the building but also affects their productivity, particularly in research institutions. However, due to the inherent correlation among various environmental indexes, it is difficult to evaluate the influence of specific physical parameters on the occupant’s comfort and research performance. This paper is based on an experiment conducted in a controlled research office in a pharmaceutical research company in the Northeast of China. The controlled research office was equipped with a radiant floor heating system that supplied heating in winter. We recruited 32 researchers and divided them into four subgroups. Each subgroup of researchers was required to conduct daily research activities under 12 different environment combinations. Data were collected from physical environment measurements, questionnaire surveys and performance tests. The results reflected that under the condition of radian floor heating in winter, changes in thermal, visual and acoustic environments could have a significant influence on occupants’ satisfaction with the environment. However, the research performance was affected only by thermal and acoustic conditions. There was a weak correlation among thermal, visual, acoustic and indoor air quality comfort.

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“…They tried to produce novel composite materials, which provide thermal insulation using waste and natural materials in construction applications. Mui et al [54] reviewed and categorized the significant developments and trends in thermal comfort research in recent years. Based on the research gaps identified, a practical solution was proposed to improve the reliability of thermal comfort predictions.…”

Section: Introductionmentioning

confidence: 99%

Thermophysics Analysis of Office Buildings with a Temperature–Humidity Coupling Strategy Under Hot-Arid Climatic Conditions

Bensafi

Ameur²,

Kaid

et al. 2021

Int J Thermophys

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This study investigates the determining parameters of thermal comfort of office in an arid hot-arid environment of Bechar, located in the northwestern region of Algeria, in which the vertical walls of the room and the roof are subjected to solar irradiations and the floor is considered to be adiabatic. The solar flux is calculated by the ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) method. The predicted results are validated against the experimental results of the meteorological station of the ENERGARID research laboratory at the University of Bechar (Algeria). The characteristics of the ambient air flow are performed by using the computational fluid dynamics (CFD) software (Fluent). The flow fields, thermal fields, and humidity are investigated. An elaborated computer program (with Delphi language) is utilized to evaluate the temperature–humidity coupling as the most essential factors of the thermal comfort. A significant impact of dynamic temperatures and humidity on thermal comfort has been observed, especially in this hot-arid environment. Besides, a considerable effect of the flow velocity has been remarked. From the obtained results and to provide the best thermal comfort in such arid regions, the range of air velocity inside the building is recommended to be between 0.2 m·s−1 and 0.3 m·s−1.

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Bayesian updates for indoor thermal comfort models

Cited by 22 publications

References 97 publications

Experimental Study and Analysis of Thermal Comfort in a University Campus Building in Tropical Climate

Experimental Study and Analysis of Thermal Comfort in a University Campus Building in Tropical Climate

Effects of different environment combinations on the comfort and productivity of researchers in winter

Thermophysics Analysis of Office Buildings with a Temperature–Humidity Coupling Strategy Under Hot-Arid Climatic Conditions

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