Assessment of the thermal and visual efficiency of solar shades

David, Mathieu; Donn, Michael; Garde, François; Lenoir, Aurélie

doi:10.1016/j.buildenv.2011.01.022

Cited by 108 publications

(51 citation statements)

References 8 publications

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“…Different illuminance thresholds are associated to the different building typologies and kind of uses of spaces in a building. In a typical office use, the European standard EN 12464-1 [77] and most authors suggest a reference value of 500 lx evaluated on the work-plane [78][79][80][81]; while others consider sufficient 425 lx [6] or even 300 lx [82].…”

Section: Illuminancementioning

confidence: 99%

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

Carlucci

Causone

Rosa

et al. 2015

Renewable and Sustainable Energy Reviews

321

156

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In the last decades, several studies aimed at assessing some specified aspects of visual comfort characterizing the relationship between the human needs and the light environment, such as an available amount of light, light uniformity, light quality in rendering colors, and predicting the risk of glare for space occupants. For each of them, a (still growing) number of indices and metrics have been proposed in literature and standards. In the present work, they are described, categorized according to common features, and finally discussed. As in the case of long-term thermal comfort indices, such visual comfort indices and their summation over a specified calculation period might be used for driving optimization processes to support a more conscious integrated design of buildings. To that purpose, the choice among the available visual comfort indices needs to be informed by an analysis of their features and implications. We present recommendations for use, and suggest areas where improvement is needed for their use in optimization processes to support buildings' design.

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Section: Illuminancementioning

confidence: 99%

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

Carlucci

Causone

Rosa

et al. 2015

Renewable and Sustainable Energy Reviews

321

156

View full text Add to dashboard Cite

show abstract

“…David et al [17] applied the combination of daylight and thermal analyses for the assessment of the efficiency of solar shades. They used the shading coefficient, cooling energy demand, daylight autonomy, sun patch index on work plane, and useful daylight illuminance as indexes for rating the performance of different typologies of external overhangs.…”

Section: Application Of Building Performance Simulation To Envelope'smentioning

confidence: 99%

Daylight Design of Office Buildings: Optimisation of External Solar Shadings by Using Combined Simulation Methods

González

Fiorito

2015

Buildings

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Abstract:Integrating daylight and energy performance with optimization into the design process has always been a challenge for designers. Most of the building environmental performance simulation tools require a considerable amount of time and iterations for achieving accurate results. Moreover the combination of daylight and energy performances has always been an issue, as different software packages are needed to perform detailed calculations. A simplified method to overcome both issues using recent advances in software integration is explored here. As a case study; the optimization of external shadings in a typical office space in Australia is presented. Results are compared against common solutions adopted as industry standard practices. Visual comfort and energy efficiency are analysed in an integrated approach. The DIVA (Design, Iterate, Validate and Adapt) plug-in for Rhinoceros/Grasshopper software is used as the main tool, given its ability to effectively calculate daylight metrics (using the Radiance/Daysim engine) and energy consumption (using the EnergyPlus engine). The optimization process is carried out parametrically controlling the shadings' geometries. Genetic Algorithms (GA) embedded in the evolutionary solver Galapagos are adopted in order to achieve close to optimum results by controlling iteration parameters. The optimized result, in comparison with conventional design techniques, reveals significant enhancement of comfort levels and energy efficiency. Benefits and drawbacks of the proposed strategy are then discussed. OPEN ACCESSBuildings 2015, 5 561

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“…In early studies, heat and energy performances have been assessed when a building is fitted with roll blinds, horizontal shading devices, vertical shading devices, and Venetian shading devices. By using a simulation program that can selectively apply a basic shading device to the façade of a building, relatively accurate and quantitative energy performance analysis was possible as the simulation programs use numerical analysis methods [5][6][7][8][9]. However, most programs used only climate data as input parameters and not using any parameters related to the movement of the shading devices.…”

Section: Introductionmentioning

confidence: 99%

Evaluating Thermal and Lighting Energy Performance of Shading Devices on Kinetic Façades

Lee

Koo

Seong³

et al. 2016

Sustainability

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Abstract:In order to evaluate the thermal and lighting energy performance of a kinetic façade using external movable shading devices, it is important to consider the operation of the shading devices since it can influence the performance significantly. This study proposes a calculation methodology which assesses the performance of the movable shading devices with the consideration of the movements of the shading devices. Calculation methods were derived by which solar heat gain, lighting energy requirement, and the primary energy equivalent to heating and cooling energy requirement can be obtained. Using the calculation methods, the optimal operation scenario for the movable shading devices was presented which can minimize the solar heat gain and lighting energy requirement. A comparison case study was carried out to demonstrate the use of the control strategies for a building where a drop awning was installed. The results showed that the optimal operation scenario suggested in this study can potentially deliver effective energy performance. The limitation and applicability of the suggested method were also discussed.

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Assessment of the thermal and visual efficiency of solar shades

Cited by 108 publications

References 8 publications

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

Daylight Design of Office Buildings: Optimisation of External Solar Shadings by Using Combined Simulation Methods

Evaluating Thermal and Lighting Energy Performance of Shading Devices on Kinetic Façades

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