The impact of thermal environment on occupant IEQ perception and productivity

Yang, Geng; Ji, Wenjie; Lin, Borong; Zhu, Yingxin

doi:10.1016/j.buildenv.2017.05.022

Cited by 257 publications

(130 citation statements)

References 37 publications

Supporting

Mentioning

121

Contrasting

Unclassified

Order By: Relevance

“…It is plausible that 25°C is close to being optimal for performance considering the results from previous studies 15,[37][38][39][40][41][42][43][44][45] (Table G1, Appendix G) that showed that optimum performance is achieved at temperatures slightly below those at which the thermal sensation is neutral, which was in the present experiment 26.9°C. As shown in Table 4, children in the present experiments were on average slightly cold in the reduced temperature condition.…”

Section: Discussionsupporting

confidence: 68%

Reducing classroom temperature in a tropical climate improved the thermal comfort and the performance of elementary school pupils

et al. 2018

View full text Add to dashboard Cite

A two-week-long intervention study was performed in two classrooms in an elementary school in Costa Rica. Split-cooling air-conditioning (AC) units were installed in both classrooms. During the first week, the air temperature was reduced in one classroom while in the other (placebo) classroom the fans were operated but no cooling was provided. During the second week, the conditions were exchanged to create a 2 × 2 crossover design in which each pupil was their own control. A total of 37 children performed tasks similar to school work and completed questionnaires reporting their thermal sensation and perceptions. Operating the AC units reduced classroom temperature by about 5 K, from about 30 to 25°C. Thermal sensations changed from hot to neutral and slightly cold, and the percentage of children rating the thermal conditions as acceptable increased significantly. Neutral temperature was estimated to be about 27°C. The 11-year-old children performed the language and logical-thinking tasks significantly better in terms of speed at the lower temperature, while the less able pupils performed better on all tasks at the lower temperature. There were no significant effects on accuracy. These results confirm published findings from moderate climates and extend their validity to the tropics. They indicate that acclimatization can increase the optimal temperature for learning.

show abstract

Section: Discussionsupporting

confidence: 68%

Reducing classroom temperature in a tropical climate improved the thermal comfort and the performance of elementary school pupils

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Some actual studies provide that the global cost of the employers, the building owners, the building users and public bodies, related to poor indoor environment conditions, may be much higher than the costs of energy use in a building [1,2]. The satisfactory quality of indoor environment can improve life satisfaction, well-being, work efficiency as well as reduce health problems [3,4]. In order to assess the influence of indoor building environmental conditions on the user, taking into account the type of installation and construction materials, it is necessary to combine knowledge of human behaviour with environmental and civil engineering.…”

Section: Introductionmentioning

confidence: 99%

Practical Implementation of the Indoor Environmental Quality Model for the Assessment of Nearly Zero Energy Single-Family Building

Piasecki¹

2019

Buildings

View full text Add to dashboard Cite

The article presents a practical implementation of the indoor quality model. The indoor environmental quality (IEQ) model, including its essential elements (TCindex—thermal comfort, IAQindex—indoor air quality, ACcindex—acoustic comfort and Lindex—daylight quality), is used to evaluate a case-study single-family building built with the nearly zero energy (NZEB) standard. The results of comfort sub-indices based on the measured indoor parameters are aggregated into one IEQindex value representing the predicted building occupants’ satisfaction in percentage terms. The author’s intention is to use the proposed model in broader civil and environmental engineering practice, especially in terms of supporting the energy performance certification. The results obtained using the IEQ model were also compared with the results obtained with a similar method based on the comprehensive assessment system for built environment efficiency (CASBEE) approach for the same building.

show abstract

“…Ma and Nie (2014) found improving lighting environment quality reduced the noise annoyance and increased the acoustic comfort. Geng et al (2017) indicated that when the thermal environment was satisfying, it raised the "comfort expectation" of lighting and acoustic factors. Above studies showed that physical environments will strengthen or weaken each other.…”

Section: Introductionmentioning

confidence: 99%

“…However, most of the studies focused on residential, office, campus buildings, etc. (Ma and Nie, 2014;Geng et al 2017;Ricciardi and Buratti, 2017), and seldom refers to shopping centers. Therefore, it's necessary to explore the physical environment satisfaction for shopping centers.…”

Section: Introductionmentioning

confidence: 99%

The impact of physical environments in satisfaction in shopping centers

Dang¹,

Wei²,

Yuan³

et al. 2018

Healthy, Intelligent and Resilient Buildings and Urban Environments

View full text Add to dashboard Cite

Lighting, thermal and acoustic are three main components of indoor physical environments affecting people's satisfaction, productivity and health. Good physical environments in shopping centers not only improve the environment atmosphere but also increase the customers' satisfaction. This study aims to find correlations between the physical environments and the satisfaction levels. Firstly, an objective measurement of physical environments had been carried out in four shopping centers. Then, a subjective evaluation was carried out in a real scene laboratory by changing four kinds of illuminance and three types of Correlated Color Temperatures (CCTs), which aims to find the relationship between the lighting environment and people's lighting, thermal and acoustic satisfaction. Moreover, the interaction of satisfaction levels were also explored. The results of field study showed that lighting and acoustic environments have a wide fluctuate range in four shopping centers. The experiment found that illuminance has a significant effect on lighting satisfaction and is best at 1000 lux (lx). The thermal and acoustic satisfaction were not directly influenced by lighting parameters; however, they had the interactions with lighting satisfaction, which showed that lighting environment would enhance the satisfaction levels of thermal and acoustic environments when it was satisfied.

show abstract

The impact of thermal environment on occupant IEQ perception and productivity

Cited by 257 publications

References 37 publications

Reducing classroom temperature in a tropical climate improved the thermal comfort and the performance of elementary school pupils

Reducing classroom temperature in a tropical climate improved the thermal comfort and the performance of elementary school pupils

Practical Implementation of the Indoor Environmental Quality Model for the Assessment of Nearly Zero Energy Single-Family Building

The impact of physical environments in satisfaction in shopping centers

Contact Info

Product

Resources

About