Impact of perforated solar screens on daylight availability and low energy use in offices

Doris, A.; Moreno, David; Casas, Jaime Navarro

doi:10.1080/17512549.2018.1550439

Cited by 15 publications

(4 citation statements)

References 25 publications

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“…Based on [37], this study proposes a parametric design method for the light environment of library buildings and selects for validation two special dates, the winter solstice and the summer solstice. This research considers a circular university library building as an example to explore the feasibility of the proposed design method.…”

Section: Methodsmentioning

confidence: 99%

A Parametric Design Method for the Lighting Environment of a Library Building Based on Building Performance Evaluation

et al. 2023

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The lighting conditions of a library directly affect the users’ spatial experience, with glass curtain walls being widely used in the design of library skins. Although glass curtain walls have been extensively adopted, they increase indoor sun exposure and glare. Considering sunlight duration and radiation as the design basis, this study employs the Rhino and Grasshopper parametric platforms to parametrically design a library with a dynamic shading skin. Specifically, our design utilizes modular shading components that can change depending on the simulated sunlight data at different times. Additionally, a new optimal design strategy has been developed to enhance the environmental lighting performance of the library. The simulation results highlight that the indoor environmental lighting performance, under dynamic epidermal shading and based on sunlight duration data, is better for east–west, north–south, and east–west orientations on the summer solstice and the winter solstice. Meanwhile, the indoor environmental lighting performance, under dynamic epidermal shading based on daylight radiation data, is better for north–south orientation on the winter solstice. Overall, this study uses parameterization to integrate building simulation and architectural design to improve a building’s lighting performance.

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Section: Methodsmentioning

confidence: 99%

A Parametric Design Method for the Lighting Environment of a Library Building Based on Building Performance Evaluation

et al. 2023

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“…Embracing passive building design principles, the industry has introduced a range of innovative solutions and technologies to tackle energy consumption challenges, encompassing diverse glass materials. These solutions include solar shading screens [9], double-or triple-glazed structures [10], advanced smart switchable glass technology capable of modifying glass types and compositions [11,12], semi-transparent photovoltaic (STPV) systems [13,14], and double-skin facade (DSF) systems [15,16].…”

Section: Windows and Building Energy Efficiencymentioning

confidence: 99%

Research on the Design Strategy of Double–Skin Facade in Cold and Frigid Regions—Using Xinjiang Public Buildings as an Example

Liu,

Wang,

Ding

et al. 2024

Sustainability

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In the context of global warming, the focus on applying and researching double–skin facade (DSF) systems to reduce energy consumption in buildings has significantly increased. However, researchers have not thoroughly examined the performance and applicability of DSFs in severe cold regions with high winter heating demands. This study aims to evaluate the potential application of DSFs in the harsh cold cities of Northwest China and investigate their role in enhancing energy efficiency in large public buildings. Through energy consumption simulation and a comprehensive evaluation using the TOPSIS entropy weight method, the effects of applying 20 DSF schemes in four cold cities in Xinjiang (Kashgar, Urumqi, Altay, and Turpan) were analyzed. The experimental results indicate that the average EUI energy–saving rates in Kashgar, Urumqi, Altay, and Turpan are 64.75%, 63.19%, 56.70%, and 49.41%, respectively. South–facing orientation is deemed optimal for DSF in Xinjiang cities, with the highest energy–saving rate reaching 15.19%. In Kashgar, the energy–saving benefits of west–facing DSF surpass those of north–facing DSF. Conversely, the order of orientation benefits for other cities is south, north, west, and east. An analysis of heating, cooling, and lighting energy consumption reveals that Box Windows exhibit superior heating energy efficiency, while Corridors are more effective for cooling. This characteristic is also evident in the optimal installation orientation of various types of curtain walls. Given the relatively higher demand for heating compared to cooling in urban areas, Box Windows yields significant benefits when facing south, west, or north; conversely, if there is a high demand for urban cooling, Corridors should be considered in these three directions. Multistorey DSF systems are suitable for east–facing buildings in Xinjiang cities. Selecting suitable DSF schemes based on specific conditions and requirements can reduce building energy consumption. The research findings offer theoretical guidance for designing and implementing DSF in diverse cities in cold regions.

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“…Smart windows with forced electrical or other control can be partially adapted to changes in the Sun’s position by switching between two or more transmission modes. Manual or automated Venetian blinds, static angular-selective shading systems, 37 perforated solar screens, 38 and other daylight shading/redirection devices are used to adapt to changes in the Sun’s trajectory. Dividing the window into multi-sections with a combination of solar protection and light-redirecting devices to control light transmission taking into account the Sun’s trajectory was proposed 39 .…”

Section: Introductionmentioning

confidence: 99%

Grating optical filter with angular-selective transmission for smart windows

Zakirullin,

Odenbakh

2024

Opt. Eng.

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The results of full-scale experiments on models of a smart window with a doublegrating optical filter are presented. Such a filter has an angular-selective direct light transmission due to two thin-film gratings with transmissive and non-transmissive (absorptive, reflective, scattering, or chromogenic) parallel strips. The gratings are angled to match the solar path relative to the window to optimize the daylight and solar heat gain without the use of shading/redirection devices. Due to the strip widths, relative positions, and slope angles of both gratings, calculated to minimize transmission at a preset time, such a smart window self-adapts to daily and seasonal changes in the position of the Sun. Diffused radiation passes through the transmissive strips of both gratings, increasing the daylight and thermal comfort indoors. Experimental data for the four hottest months confirmed the results of numerical simulation based on a previously developed method for calculating the temporal characteristics of the directional light transmission of filters. The minimum transmittance was achieved at a preset time on June 15, for which all geometric parameters of the filters were calculated; on July 15, August 15, and September 15, the light transmission consistently increased, indicating good seasonal adaptation. Conclusions regarding the selection and optimization of the strip widths of the gratings, as well as the processing of experimental data, were obtained.

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Impact of perforated solar screens on daylight availability and low energy use in offices

Cited by 15 publications

References 25 publications

A Parametric Design Method for the Lighting Environment of a Library Building Based on Building Performance Evaluation

A Parametric Design Method for the Lighting Environment of a Library Building Based on Building Performance Evaluation

Research on the Design Strategy of Double–Skin Facade in Cold and Frigid Regions—Using Xinjiang Public Buildings as an Example

Grating optical filter with angular-selective transmission for smart windows

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