Identifying relationships between daylight variables and human preferences in a climate chamber

Krüger, Eduardo Leite; Tamura, Cintia Akemi; Trento, Ticiana Weiss

doi:10.1016/j.scitotenv.2018.06.164

Cited by 18 publications

(6 citation statements)

References 20 publications

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“…Studying the lighting conditions in office types shows strong relationships between the illuminance at eye level and the health parameters, namely fatigue and sleep quality [8]. It was concluded that even the colour temperature of light has significant correlation with the performance and alertness of office workers [9]. It has been shown that not only daylight has direct physical effects on occupants, but also physiologically it is an efficient energiser to human visual and circadian systems [10].…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimisation framework for designing office windows: quality of view, daylight and energy efficiency

et al. 2020

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This paper presents a new, multi-objective method of analysing and optimising the energy processes associated with window system design in office buildings. The simultaneous consideration of multiple and conflicting design objectives can make the architectural design process more complicated. This study is based on the fundamental recognition that optimising parameters on the building energy loads via window system design can reduce the quality of the view to outside and the received daylightboth qualities highly valued by building occupants. This paper proposes an approach for quantifying Quality of View in office buildings in balance with energy performance and daylighting, thus enabling an optimisation framework for office window design. The study builds on previous research by developing a multi-objective method of assessment of a reference room which is parametrically modelled using actual climate data. A method of Pareto Frontier and a weighting sum is applied for multi-objective optimisation to determine best outcomes that balance design requirements. The Results reveal the maximum possible window to wall ratio for the reference room. The optimisation model indicates that the room geometry should be altered to achieve the lighting and view requirements set out in building performance standards. The research results emphasise 2 the need for window system configuration to be considered in the early design stages. This exploratory approach to a methodology and framework considers both building parameters and the local climate condition. It has the potential to be adopted and further refined by other researchers and designers to support complex, multi-factorial design decision-making.

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Section: Introductionmentioning

confidence: 99%

Multi-objective optimisation framework for designing office windows: quality of view, daylight and energy efficiency

et al. 2020

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“…The two daylight situations were for the solar orientation of the glazed façade predominantly to the south ("equatorial orientation") and orientation of glazed façade predominantly to the north ("non-equatorial orientation"). Both façade orientations were defined from daylight simulations (Krüger et al, 2018), which identified opposing orientations that would yield a maximum differentiation in terms of daylight, also accounting for existing obstructions, yet without any glare instances at desk level. For this study, seasonal effects on research participants are tested specifically regarding daylight exposure, thus the sessions with electric light source are not considered in the analysis.…”

Section: Methodsmentioning

confidence: 99%

Seasonal Effects of Daylight Conditions on Occupant Perception and Skin Temperature

Krüger

2022

Front. Sustain. Cities

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Current research on the relationship between daylight and well-being has shown that access to daylight plays a relevant role both in terms of light perception and with respect to physiological mechanisms not directly related to vision. The aim of this paper is to analyze changes in reported light perception and in physiological responses, represented in this case by the skin temperature of research participants (n = 16) across three seasons (winter, spring and summer seasons) in a temperate, mid-latitude location, Karlsruhe, in southern Germany (49°N, 8.5°E). Sessions have been held in thermally stable rooms of a climate chamber, with daylight exposure to two opposing solar orientations of the glazed façade, namely equatorial and non-equatorial orientations, over 5-h morning sessions. Differences in light perception as well as changes in physiology have been observed. Results showed an increased sensitivity of the individuals in terms of light perception to changes in daylight in winter while such sensitivity dropped in spring and summer, with greater daylight availability and diminished lighting variability during sessions. Due to the intrinsic relationship between light perception and circadian entrainment, the same was verified for changes in skin temperature, which were also found to be significantly related to daylight availability. Seasonal influence suggests that variability of brightness and correlated color temperature (CCT) of natural light can affect both psychological and physiological patterns in humans.

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“…11b). The majority of studies focused on glare (more than 50%), either to evaluate subjective perceptions due to variations of lighting conditions or other factors' influences (such as time of the day or openings and blinds features) [21,22,37,39,42,66,[171][172][173][174][175][176][177][178][179][180][181][182], develop, evaluate or validate metrics, thresholds or indexes [35,68,[183][184][185][186][187][188][189][190][191][192][193], investigate glare influence on performance and physiology [187,[194][195][196] or study a combination of such objectives (Fig. 11a).…”

Section: Visuallighting-only Experimentsmentioning

confidence: 99%

“…Some glare experiments used full-size apparatuses consisting of a semi hexagonal lighting chamber equipped with a chin rest [22,172,173,176] or of a semi-spherical screen with two halogen lamps mounted on a 1-m radius round boom [21,185]. Only fewer studies were conducted in a stand-alone test room, either located indoor [197,198,200-204, 210-213,219] or outdoor [35,42,179,188,192,194,220,221]. Some of the outdoor facilities were rotating structures [35,179,192,195,220], allowing daylight conditions to be tested with a reduced impact of the daylight variations due to the season and time of the day.…”

Section: Visuallighting-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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Identifying relationships between daylight variables and human preferences in a climate chamber

Cited by 18 publications

References 20 publications

Multi-objective optimisation framework for designing office windows: quality of view, daylight and energy efficiency

Multi-objective optimisation framework for designing office windows: quality of view, daylight and energy efficiency

Seasonal Effects of Daylight Conditions on Occupant Perception and Skin Temperature

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

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