The effects of a novel personal comfort system on thermal comfort, physiology and perceived indoor environmental quality, and its health implications ‐ Stimulating human thermoregulation without compromising thermal comfort

Luo, Wei; Kramer, Rick; Kort, Y.; Rense, Pascal; Lichtenbelt, Wouter van Marken

doi:10.1111/ina.12951

Cited by 27 publications

(11 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8 Moreover, some studies revealed that the occupants are prone to report differently thermal comfort results if the control of the environment belongs themselves. [9][10][11] For instance, in a study of Yun,11 the comfort temperature of the group with high perceived control was 0.9°C higher than the group with low perceived control in summer season. In addition, several studies also stated that the thermal sensation of the occupants is related primarily to the psychophysical dynamics of thermal alliesthesia, which are related to qualities of pleasantness.…”

Section: Introductionmentioning

confidence: 99%

“…By the given information, the occupants in both rooms felt warm even though the ambient temperatures were different 8 . Moreover, some studies revealed that the occupants are prone to report differently thermal comfort results if the control of the environment belongs themselves 9–11 . For instance, in a study of Yun, 11 the comfort temperature of the group with high perceived control was 0.9°C higher than the group with low perceived control in summer season.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sensitivity analysis of the effect of current mood states on the thermal sensation in educational buildings

et al. 2022

View full text Add to dashboard Cite

Adaptive thermal comfort is a model which considers behavioral and psychological adjustments apart from Fanger's Predicted Mean Vote (PMV)/Percentage of Dissatisfied (PPD) method. In the literature, the differences between the PMV/PPD method and adaptive thermal comfort were mainly considered in aspects of behavioral adjustments in an environment. Conversely, limited studies related to psychological adjustments were considered in detail for thermal comfort. This study purposes to investigate the effects of current mood state subscales on thermal sensation of the occupants for the first time in the literature. To this aim, the Profile of Mood States (POMS) questionnaire is used to determine the mood state of the occupants with six different subscales: Anger, Confusion, Vigor, Tension, Depression, and Fatigue. The experiments were conducted in a university study hall in Ankara, Turkey, which is in warm‐summer Mediterranean climate (Csb) according to Köppen–Geiger Climate Classification. The distributions of each subscale were examined via Anderson Darling and Shapiro–Wilk tests accordingly given responses from the occupants. The sensitivity analysis was applied to the six subscales of the POMS with Monte Carlo simulation method by considering the distributions of each subscale. The results revealed that the current mood state has a crucial effect on the thermal sensation of the occupants. The subscales of the Depression and Vigor were found as the most vital ones among the six subscales. Only the pure effects of the Vigor and Depression would change the thermal sensation of the occupants 0.31 and 0.30, respectively. The Confusion was determined as the least effective subscale to the thermal sensation of the occupants. Moreover, with the combination of all the six subscales, the thermal sensation might change up to 1.32. Findings in this study would help researchers to develop the personalized thermal comfort systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensitivity analysis of the effect of current mood states on the thermal sensation in educational buildings

et al. 2022

View full text Add to dashboard Cite

show abstract

“…[23] While a positive energy balance is necessary to counteract obesity, most recent research assumes that long exposure to thermal neutral environments, does the exact opposite. [23,24,[32][33][34] Several studies were able to show that cold and warmth both effect the metabolic health and mild colds to positively increase the energy metabolism without shivering. This non-shivering thermogenesis (NST) increases energy expenditure in temperatures between 14 -16°C for lightly clothed, lean adult, and in temperatures as high as 19°C and regular exposure for two hours per day for six weeks to 17°C, as shown in a study done by Yoneshiro, according to Lichtenbelt, et al (2017) [23].…”

Section: Evaluating Healthmentioning

confidence: 99%

Mitigating climate change through healthy discomfort

Koth

Kobas

Bausch

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Amid the climate change and the worldwide catastrophes, witnessed on a daily, we find ourselves in a time in which we need to start justifying any recourse and energy consumption, at least of which is not truly renewable. While the outside temperatures become more extreme, the inside environment becomes more relevant. The way we design and operate our buildings is directly influenced by current building standards and as we spend almost all our time indoors, our comfort, wellbeing and health are crucially affected by such. The last five decades have seen many approaches in establishing guidelines for a comfortable indoor environment. But while current standards favor the narrow temperature ranges of static homogeneous environments, they have been criticized for their high energy consumption and long-term health implications. The paper compares a typical office space with mechanical cooling with that of a passive strategy, by evaluating the energy consumption and health over comfort. The results show a 64% cooling potential within the mechanically cooled scenario as well as the passive strategy complying to standard without any cooling energy.

show abstract

“…The implementation of time-varying indoor set-point temperatures can contribute to reducing buildings' energy consumption and promoting their energy flexibility 1,2 . Heating and cooling setpoint temperature modulations can also be useful for enhancing building occupants' comfort [3][4][5][6][7][8] , well-being 9 , and health [10][11][12] . However, thermal comfort has been mostly studied under steady-state conditions and near neutrality 8,13 ; the effect of the time-of-day on human thermal perception has been even less often addressed 14 .…”

mentioning

confidence: 99%

Effect of time-of-day on human dynamic thermal perception

Vellei

Pigliautile

Pisello

2023

Sci Rep

View full text Add to dashboard Cite

Implementing heating and cooling set-point temperature modulations in buildings can promote energy savings and boost energy flexibility. However, time and time-of-day requirements in current indoor climate regulations are either overly simplified or ignored completely. A better understanding of how human thermal responses vary throughout the day is useful to effectively design and operate energy-flexible buildings. To date, only a handful of studies have looked at diurnal changes in thermal perception and mostly near steady-state neutrality without controlling for light exposure. This is the first experimental investigation aimed at understanding how the time of the day influences physiological and subjective human sensory responses to a localized dynamic thermal stimulus under constant light rich in long wavelengths (red). Results indicated that humans responded physiologically differently depending on the time of the day with a higher rate of change in the skin temperature in the evening compared with the afternoon. Furthermore, the increase of thermal sensation during the warming skin temperature transients was found to be greater in the evening. No differences were observed under steady-state thermal conditions. This evidence suggests that accounting for the time of the day is important when dynamically operating buildings, such as during demand-response programs.

show abstract

The effects of a novel personal comfort system on thermal comfort, physiology and perceived indoor environmental quality, and its health implications ‐ Stimulating human thermoregulation without compromising thermal comfort

Cited by 27 publications

References 78 publications

Sensitivity analysis of the effect of current mood states on the thermal sensation in educational buildings

Sensitivity analysis of the effect of current mood states on the thermal sensation in educational buildings

Mitigating climate change through healthy discomfort

Effect of time-of-day on human dynamic thermal perception

Contact Info

Product

Resources

About