Dynamic solar screens for high-performance buildings – a critical review of perforated external shading systems

Naik, Niyati S.; Elzeyadi, Ihab; Cartwright, Virginia

doi:10.1080/00038628.2022.2063248

Cited by 6 publications

(2 citation statements)

References 52 publications

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“…In view of the outlined limitations, the choice of window cover plays a crucial role in indoor daylighting and should be carefully considered for effective daylight in heritage buildings. Modern buildings have adopted dynamic photosensors to aid the operation of window covers based on indoor and outdoor daylight illuminance [41,51,52]. Thus, using automatic daylight-linked sensors to dynamically operate the window covers will enhance effective indoor daylighting and reduce overall energy use intensity due to reduced electric light dependency.…”

Section: Limitations and Recommendationsmentioning

confidence: 99%

Daylighting Assessment of a Heritage Place of Instruction and Office Building in Alice, South Africa

Overen,

Meyer,

Makaka

2023

Buildings

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Mitigation of post-occupancy building energy consumption has resulted in the change of building design to utilise ambient weather factors for indoor thermal conditioning and lighting. This has increased the construction of new buildings with large glazing façades and reduced adaptive use of heritage buildings as they are considered not designed to meet modern energy use requirements. This paper evaluates the daylighting performance of a heritage place of instruction and office building. A quantitative research approach based on building information simulation tools was adopted. Autodesk Revit 2021 and Integrated Environmental Solutions Virtual Environment (IESVE) 2021 were used in modelling and simulating the building daylighting performances. The building’s annual daylight performance analysed with climate-based daylight modelling shows that points in the analysed spaces were within the UDI300-2000 for more than 50% of the occupied period (07h00 to 17h00) in a year. The sDA300,50% was found to be 100% in most spaces, which is considered a favourable daylit space according to the Illuminance Engineering Society of North America (IESNA). Further, discomfort glare analysis revealed that the building daylight glare is imperceptible, with an average daylight glare probability of 21.2%. The 1:14 window–wall ratio contributes to the building daylighting relative to orientation without constituting visual discomfort. Overall, climate-based daylight modelling revealed that the building’s annual daylight level meets the IESNA requirements with an imperceptible daylight glare.

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Section: Limitations and Recommendationsmentioning

confidence: 99%

Daylighting Assessment of a Heritage Place of Instruction and Office Building in Alice, South Africa

Overen,

Meyer,

Makaka

2023

Buildings

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“…However, none of the mentioned studies compared adaptive façades from different families. Most of the available studies in the literature limit their scope to a single façade family or technology such as dynamic shading devices [8][9][10], switchable chromogenic windows [11,12], double-skin façade [13,14], or switchable conductivity value [15]. In addition, dynamic control strategies are important, but few studies evaluate their impacts to consistently benchmark the performance of adaptive façades.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Thermal Energy Saving Potential and Overheating Risk of Four Adaptive Façade Technologies in Office Buildings

et al. 2022

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Adaptive façades are gaining greater importance in highly efficient buildings under a warming climate. There is an increasing demand for adaptive façades designed to regulate solar and thermal gains/losses, as well as avoid discomfort and glare issues. Occupants and developers of office buildings ask for a healthy and energy-neutral working environment. Adaptive façades are appropriate dynamic solutions controlled automatically or through occupant interaction. However, relatively few studies compared their energy and overheating risk performance, and there is still a vast knowledge gap on occupant behavior in operation. Therefore, we chose to study four dynamic envelopes representing four different façade families: dynamic shading, electrochromic glazing, double-skin, and active ventilative façades. Three control strategies were chosen to study the dynamic aspect of solar control, operative temperature, and glare control. Simulations were realized with EnergyPlus on the BESTEST case 600 from the ASHRAE standard 140/2020 for the temperate climate of Brussels. A sensitivity analysis was conducted to study the most influential parameters. The study findings indicate that dynamic shading devices and electrochromic glazing have a remarkable influence on the annual thermal energy demand, decreasing the total annual loads that can reach 30%. On the other hand, BIPV double-skin façades and active ventilative façades (cavity façades) could be more appropriate for cold climates. The study ranks the four façade technologies and provides novel insights for façade designers and building owners regarding the annual energy performance and overheating risk.

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Dynamic facades for sustainable buildings: A review of classification, applications, prospects and challenges

Jamilu,

Abdou,

Asif

2024

Energy Reports

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Dynamic solar screens for high-performance buildings – a critical review of perforated external shading systems

Cited by 6 publications

References 52 publications

Daylighting Assessment of a Heritage Place of Instruction and Office Building in Alice, South Africa

Daylighting Assessment of a Heritage Place of Instruction and Office Building in Alice, South Africa

Comparison of Thermal Energy Saving Potential and Overheating Risk of Four Adaptive Façade Technologies in Office Buildings

Dynamic facades for sustainable buildings: A review of classification, applications, prospects and challenges

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