| 1. |
- Amin, Rucha, et al.
(författare)
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Exploring the Link between Thermal Experience and Adaptation to a New Climate
- 2018
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Ingår i: Future Cities and Environment. - : Ubiquity Press, Ltd.. - 2363-9075 .- 2363-9075. ; 4:1
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Tidskriftsartikel (refereegranskat)abstract
- Numerous field studies conducted in different locations have found that peoples’ thermal comfort varies with local climate. However, little is understood about the effect of moving from one climate to another. Literature suggests that people would be able to adapt to the typical indoor climate in a new location, though estimated timescales for this process differ. This paper uses data from a 6-month field study to investigate the process of thermal adaptation to a new climate. The field study consisted of a series of four thermal comfort surveys conducted with 48 occupants of single occupancy residential accommodation units, which helped to estimate their preferred temperatures. The surveys were carried out between October 2015 and April 2016 in Southampton, UK, with high resolution indoor air temperature data collected for the periods between the surveys. Study participants were grouped into three categories: long term residents of the UK (Category A), recently moved to the UK from cold climates (Category An) and recently moved to the UK from warm climates (Category B). The higher indoor temperatures of participants from cool climates (Category An) indicates the influence of indoor thermal history in determining thermal comfort conditions in a new location. This is highlighted by the fact that 94% of Category An participants reported having heating in their previous residence compared to 17% of Category B participants. Analysis of comfort temperatures over the first 6 months of occupancy shows no indication that occupants from Category An or B are adapting their indoor preferences to match that of long term UK residents, given the choice to create their preferred environment. Finally, comparison of indoor air temperature and comfort temperature found a higher correlation in Category A participants which supports the key principles of adaptive comfort theory. Category An demonstrated fairly close correlation though air temperatures were higher than comfort temperatures which may be due to embedded heater use behaviour patterns. Category B demonstrated no correlation between comfort temperature and air temperature which may be due to unfamiliarity to indoor heating systems.
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| 2. |
- Amin, Rucha, et al.
(författare)
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Investigating the impact of thermal history on indoor environmental preferences in a modern halls of residence complex
- 2016
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Ingår i: Proceedings - 9th International Windsor Conference 2016: Making Comfort Relevant. ; , s. 203-216
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Konferensbidrag (refereegranskat)abstract
- Numerous field studies conducted in different locations have demonstrated that comfort conditions vary due to adaptation to the local climate. This study aims to investigate how preferences for the indoor environment change when the climate context changes and how thermal history influences comfort conditions in a new thermal environment. A new halls of residence complex in the south of England, housing occupants from various climatic regions, is used as a case study. Two thermal comfort surveys were conducted in October and December 2015 (N=53 residents) within the first three months of the occupants. Air temperature and relative humidity measurements were collected during this period. Results show a range of comfort temperatures of over 10°C across the study period. The first survey (October) found no significant difference between residents when grouped by previous climate of residence. The second survey (December) found that the mean comfort temperature for residents from the UK had dropped by 1°C, despite an unseasonably warm winter, and mean comfort temperatures for residents from other climates remained the same. This could be an indication of psychological adaptation whereby residents accustomed to the UK climate expect cooler temperatures moving from October to December and thus come to prefer this.
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| 3. |
- Amin, Rucha, et al.
(författare)
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The influence of a student’s ‘home’ climate on room temperature and indoor environmental controls use in a modern halls of residence
- 2016
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Ingår i: Energy and Buildings. - : Elsevier BV. - 0378-7788. ; 119, s. 331-339
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Tidskriftsartikel (refereegranskat)abstract
- Adaptive comfort theory states that over time people adapt to their normal environment. Therefore, people from different climates are expected to have different thermal preferences and behaviours, which could lead to ‘performance gap’ in buildings with occupants of diverse climate backgrounds. This study investigates the influence of occupants’ thermal history on use of controls and indoor temperature preference in a newly built halls of residence building complex in Southampton, UK, which provides 1104 rooms to international and UK students. A total of 223 questionnaire responses along with monitored temperature data and thermal comfort surveys from 30 rooms are used in this analysis.The results indicate that residents’ ‘home’ climate is impacting the reported use of environmental controls in rooms with similar typological characteristics. The average indoor temperature of residents from warm climates was 2.3 °C higher than that of residents from cool climates in February 2015 (winter heating season). This difference cannot be explained by room orientation alone. Comparison of room temperatures to design values indicates that UK design standards may not account for the comfort needs of residents accustomed to warmer climates. A simple management approach to comfort optimisation is suggested, locating students on the appropriately orientated facade to reflect their ‘home’ climate.
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| 4. |
- Bourikas, L., et al.
(författare)
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Facilitating responsive interaction between occupants and building systems through dynamic post-occupancy evaluation
- 2020
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Ingår i: IOP Conference Series: Earth and Environmental Science. - : IOP Publishing. - 1755-1307 .- 1755-1315. ; 410:1
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Konferensbidrag (refereegranskat)abstract
- Post-occupancy evaluation (POE) is a process that can reveal the interrelations between key building performance factors and successfully integrate indoor environmental quality, thermal comfort, functionality, environmental strategy and occupants' satisfaction. POE has become a prerequisite for several building certification systems and it is often presented as a method to improve the commissioning of buildings and as a user experience feedback mechanism. This paper is based on a POE undertaken through stages at the University of Southampton Mayflower Halls of Residence complex. The first stage included the evaluation of occupant satisfaction, indoor environment quality and energy use. Results from temperature and relative humidity monitoring and an online POE questionnaire were analysed in the context of energy use, thermal comfort and building controls' functionality. The second part of this study monitored the air temperature in a sub-sample of 30 rooms where the residents participated in a thermal comfort survey with a "right-here-right-now" questionnaire and a portable instrument that monitored air temperature, relative humidity, globe temperature and air velocity in the rooms. This paper presents the results of the POE and discusses approaches for the improvement in the buildings' energy performance and the environmental conditions in the living spaces of the students. Results suggest that current use of controls is not always effective, with implications for the buildings' energy use. Large variability was found in occupants' thermal perception and preferences, which points to a need for occupant-centric solutions. In this study, POE is approached as a dynamic process that could be used to facilitate the responsive interaction of occupants with building systems and deliver through their engagement high energy performance and comfort.
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| 5. |
- Schweiker, Marcel, et al.
(författare)
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Evaluating assumptions of scales for subjective assessment of thermal environments – Do laypersons perceive them the way, we researchers believe?
- 2020
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Ingår i: Energy and Buildings. - : Elsevier BV. - 0378-7788. ; 211
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Tidskriftsartikel (refereegranskat)abstract
- People's subjective response to any thermal environment is commonly investigated by using rating scales describing the degree of thermal sensation, comfort, and acceptability. Subsequent analyses of results collected in this way rely on the assumption that specific distances between verbal anchors placed on the scale exist and that relationships between verbal anchors from different dimensions that are assessed (e.g. thermal sensation and comfort) do not change. Another inherent assumption is that such scales are independent of the context in which they are used (climate zone, season, etc.). Despite their use worldwide, there is indication that contextual differences influence the way the scales are perceived and therefore question the reliability of the scales’ interpretation. To address this issue, a large international collaborative questionnaire study was conducted in 26 countries, using 21 different languages, which led to a dataset of 8225 questionnaires. Results, analysed by means of robust statistical techniques, revealed that only a subset of the responses are in accordance with the mentioned assumptions. Significant differences appeared between groups of participants in their perception of the scales, both in relation to distances of the anchors and relationships between scales. It was also found that respondents’ interpretations of scales changed with contextual factors, such as climate, season, and language. These findings highlight the need to carefully consider context-dependent factors in interpreting and reporting results from thermal comfort studies or post-occupancy evaluations, as well as to revisit the use of rating scales and the analysis methods used in thermal comfort studies to improve their reliability.
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| 6. |
- Schweiker, Marcel, et al.
(författare)
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The Scales Project, a cross-national dataset on the interpretation of thermal perception scales
- 2019
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Ingår i: Scientific data. - : Springer Science and Business Media LLC. - 2052-4463. ; 6:1
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Tidskriftsartikel (refereegranskat)abstract
- Thermal discomfort is one of the main triggers for occupants' interactions with components of the built environment such as adjustments of thermostats and/or opening windows and strongly related to the energy use in buildings. Understanding causes for thermal (dis-)comfort is crucial for design and operation of any type of building. The assessment of human thermal perception through rating scales, for example in post-occupancy studies, has been applied for several decades; however, long-existing assumptions related to these rating scales had been questioned by several researchers. The aim of this study was to gain deeper knowledge on contextual influences on the interpretation of thermal perception scales and their verbal anchors by survey participants. A questionnaire was designed and consequently applied in 21 language versions. These surveys were conducted in 57 cities in 30 countries resulting in a dataset containing responses from 8225 participants. The database offers potential for further analysis in the areas of building design and operation, psycho-physical relationships between human perception and the built environment, and linguistic analyses.
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