A seasonal approach to alliesthesia. Is there a conflict with thermal adaptation?

Schweiker, Marcel; Schakib‐Ekbatan, Karin; Fuchs, Xaver; Becker, Susanne

doi:10.1016/j.enbuild.2019.109745

Cited by 36 publications

(10 citation statements)

References 27 publications

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“…Furthermore, it influences how they perceive and accept the thermal effect in winter and summer. The findings of this analysis agree with differences in seasonal thermal acceptance that have been reported in several outdoor thermal comfort studies (T. P. Lin et al, 2011;Schweiker et al, 2020;Zhou et al, 2020).…”

Section: 3supporting

confidence: 91%

Outdoor thermal comfort - An adaptive model to assess thermal comfort in urban outdoors in New Zealand.

Perera¹

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This research attempts to integrate human thermal adaptation into thermal comfort assessment in order to explore the complex link between microclimate, thermal comfort, thermal adaptation, and user expectations in outdoor urban parks in New Zealand. The study extends the exploratory analysis and the model developed by D.Walton, V. Dravitzky and M. Donn in 2007. It is based on extensive surveys of over 1000 people in urban parks in Wellington – a temperate but windy climate - and Christchurch – a less windy temperate climate with significantly higher and lower outdoor temperatures than Wellington. This study has extended the methodology to define a comprehensive human adaption scale (Combined Adaptive Factor) that combines a number of inputs related to thermal responses. The wind, sun, temperature and humidity were measured simultaneously with the survey implementation. The combined adaptive factor comprises a correlation of thermal sensations, behavioural changes and preferences to probe ‘the degree people have to adapt’ to be comfortable in different outdoor conditions. The exploration process to identify how the climate influences comfort resulted in a Thermal Adaptation Index, a linear model represented by temperature, wind, relative humidity, and solar radiation to predict comfort based on climate. The thermal environment in outdoor urban spaces substantially influences the use of the space as it directly affects peoples’ thermal perception. Improving thermal comfort in the urban outdoor environment can enhance the use of space and ultimately lead to a sustainable social life in cities. The result is improvement in the city inhabitants’ health and wellbeing. Improving the livability and vitality of the urban outdoors also has environmental and economic benefits. It is essential to understand people’s thermal expectations based on their requirements to enhance livability and improve thermal comfort in urban pockets by changing the physical context. Understanding people’s knowledge of the thermal environment and how they accept the thermal effects based on their expectations and functionality can lead to better thermal perception predictions enabling designers to design the physical context for better thermal comfort. Recent outdoor thermal comfort research has moved to investigate the combined effects of sun, wind and temperature integrating human adaptation aspects. Many field experiments have reported discrepancies with physiological models and have inclined to calibrate these models based on human thermal responses.

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Section: 3supporting

confidence: 91%

Outdoor thermal comfort - An adaptive model to assess thermal comfort in urban outdoors in New Zealand.

Perera¹

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“…9a. Fundamental studies include research focusing on a variety of different aspects influencing human thermal comfort such as thermal adaptation [78][79][80][81][82], thermal acclimatization [83][84][85][86], increased air velocity [87][88][89][90], relative humidity [60,[91][92][93][94], gender [95][96][97][98], age [52,[99][100][101][102], transient thermal conditions [93,[103][104][105][106][107], perceived control [108], and the influence of emotional states [109,110]. About 30% of the thermal experiments are dedicated to the study of non-uniform thermal conditions.…”

Section: Thermal-only Experimentsmentioning

confidence: 99%

Test rooms to study human comfort in buildings: A review of controlled experiments and facilities

Pisello¹,

Pigliautile²,

Andargie³

et al. 2021

Renewable and Sustainable Energy Reviews

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“…35 Thermal perception has different dimensions: sensation, comfort, preference, pleasantness, acceptability. 36 However, for the statistical analyses done in this paper, we focused on the two dimensions which are most commonly used by researchers and are, also, directly comparable with Fanger's PMV and PPD indices: thermal sensation and thermal acceptability. The observed TSV is assessed on the seven-point ASHRAE thermal sensation scale and is considered an objective measure of the sensed thermal stimulus.…”

Section: Ashrae I and Scats Datasetmentioning

confidence: 99%

Some evidence of a time-varying thermal perception

Vellei

O’Brien

Martinez

et al. 2021

Indoor and Built Environment

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Recent research suggests that a time-varying indoor thermal environment can lead to energy savings and contribute to boost buildings' energy flexibility. However, thermal comfort standardization has so far considered thermal comfort criteria as constant throughout the day. In general, very little attention has been given to the ‘ time of day' variable in the context of thermal comfort research. In this paper, we show some evidence of a time-varying thermal perception by using: (1) data from about 10,000 connected Canadian thermostats made available as part of the ‘ Donate Your Data' dataset and (2) about 22,000 samples of complete (objective + ‘ right-here-right-now' subjective) thermal comfort field data from the ASHRAE I and SCATs datasets. We observe that occupants prefer colder thermal conditions at 14:00 and progressively warmer ones in the rest of the day, indistinctively in the morning and evening. Neutral temperature differences between 08:00 and 14:00 and 14:00 and 20:00 are estimated to be of the order of 2°C. We hypothesize that the human circadian rhythm is the cause of this difference. Nevertheless, the results of this study are only based on observational data. Thermal comfort experiments in controlled environmental chambers are required to confirm these findings and to better elucidate the effects of light and circadian timing and their interaction on thermal perception.

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A seasonal approach to alliesthesia. Is there a conflict with thermal adaptation?

Cited by 36 publications

References 27 publications

Outdoor thermal comfort - An adaptive model to assess thermal comfort in urban outdoors in New Zealand.

Outdoor thermal comfort - An adaptive model to assess thermal comfort in urban outdoors in New Zealand.

Test rooms to study human comfort in buildings: A review of controlled experiments and facilities

Some evidence of a time-varying thermal perception

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