Multi-performance optimization of static shading devices for glare, daylight, view and energy consideration

Luca, Francesco De; Sepúlveda, Abel; Varjas, Toivo

doi:10.1016/j.buildenv.2022.109110

Cited by 52 publications

(10 citation statements)

References 71 publications

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“…57 Other researchers investigated how to optimise daylight performance, glare, views and energy efficiency using shading devices for sunny climates. 58,59 In order to understand more about the intersection of the visual and non-visual effects of lighting, additional studies are required to examine lighting performance in relation to the non-visual effects of light.…”

Section: Guidelines For Proper Light At the Proper Timementioning

confidence: 99%

Investigation of the daylight spectrum in an indoor environment using CIE S 026 melanopic metrics

Englezou,

Michael

2023

Lighting Research & Technology

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Since discovering the intrinsically photosensitive retinal ganglion cells (ipRGCs) and their impact on the circadian rhythm, many disciplines have been researching the physiological and psychological effects of light on humans. However, not much research has been conducted on how the spatial configuration of a room (orientation and gaze direction) changes the light quality and quantity. This research examines the variability of the natural lighting spectrum, focusing on light intensity, the spectrum itself, as well as variations across seasons and hours. The metrics examined are the CIE S 026 melanopic equivalent daylight illuminance (melanopic EDI) and melanopic daylight efficacy ratio (melanopic DER). Field measurements were taken in a room with a south orientation located in Cyprus, using a spectrometer. The main parameters under study were eight gaze directions, four seasons (June, September, December and March) and four different hours each day (09:00, 12:00, 15:00 and 18:00) for 20 positions in the test room. The results show the impact of season, time and gaze direction on the melanopic DER and melanopic EDI. Overall, due to the low sun angle and direct sunlight exposure in the winter, the melanopic EDI was much higher compared to the other three seasons, whereas the melanopic DER had the lowest values. For all seasons and times, most of the cases achieved the minimum recommendation for daytime light exposure of melanopic EDI of more than 250 lx.

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Section: Guidelines For Proper Light At the Proper Timementioning

confidence: 99%

Investigation of the daylight spectrum in an indoor environment using CIE S 026 melanopic metrics

Englezou,

Michael

2023

Lighting Research & Technology

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“…26 Movable exterior shading systems can lead to an energy consumption reduction of up to 14.9%, 27 while this reduction is as low as 4.6% for static shadings. 28 A study in Estonia 29 showed that an appropriate shading design could reduce primary energy use by 29.1% and improve visual comfort by around 90%. In contrast, a rotating overhang system, the most efficient system among different types of dynamic shading systems, can reduce the energy consumption of an office building by up to 39%, especially in the warm climate of the United States.…”

Section: Introductionmentioning

confidence: 99%

A multi‐objective optimization approach to designing window and shading systems considering building energy consumption and occupant comfort

Nazari

Mohammadi

Sareh

2023

Engineering Reports

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The energy performance of a building has a significant impact on the environment as well as the comfort of its occupants. Given that window systems and control elements such as shading devices play a critical role in a building's energy consumption and comfort, this article presents an investigation into the optimization of windows in four different orientations, along the four cardinal directions, for a typical office room in Tehran. The objective is to reduce cooling, heating, and lighting energy consumption while improving occupant comfort simultaneously, using the NSGA‐II algorithm as a multi‐objective optimization method. To this end, first, an investigation into the effects of various parameters on total building energy consumption and occupant comfort is conducted. Subsequently, each parameter is evaluated in detail concerning its impact on each façade. As the final step, for each façade, the optimal solutions and the most undesirable scenarios are determined. The results, in which the possibility of glare is also considered, can be used by architects and designers for making informed design decisions. The results show that, in all orientations, the number of slats and their distance from the wall are the most effective parameters of shading configurations. Although the eastern and western windows are larger in this study, visual discomfort can be controlled using suitable shadings to achieve acceptable levels of visual comfort. Furthermore, north façades provide the least amount of thermal comfort and consume the least amount of energy while experiencing glare for longer periods.

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“…In the last decade, MOEAs were widely applied in the building industry to solve MOO problems, which often include objectives such as operational energy performance [9][10][11], thermal comfort [9,10,12], daylight conditions [13,14], life cycle assessment (LCA) [11,[15][16][17][18][19] and life cycle cost (LCC) [10,[17][18][19]. This directly indicates the benefit of investigating MOO problems in the praxis of the building industry.…”

Section: Introductionmentioning

confidence: 99%

“…In 2022, Fan et al [13] investigated the optimal façade solution considering shading ratio, operational energy and daylight comfort using SPEA-II. Similarly, De Luca et al [14] conducted a multi-objective optimization study of non-operable shading systems focusing on the visual comfort.…”

Section: Introductionmentioning

confidence: 99%

Decision-making under uncertainty in the early phase of building façade design based on multi-objective stochastic optimization

Zong

Margesin

Staudt

et al. 2022

Building and Environment

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Multi-performance optimization of static shading devices for glare, daylight, view and energy consideration

Cited by 52 publications

References 71 publications

Investigation of the daylight spectrum in an indoor environment using CIE S 026 melanopic metrics

Investigation of the daylight spectrum in an indoor environment using CIE S 026 melanopic metrics

A multi‐objective optimization approach to designing window and shading systems considering building energy consumption and occupant comfort

Decision-making under uncertainty in the early phase of building façade design based on multi-objective stochastic optimization

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