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Bourgeois, D., C. F. Reinhart und G. Ward. „Standard daylight coefficient model for dynamic daylighting simulations“. Building Research & Information 36, Nr. 1 (Januar 2008): 68–82. http://dx.doi.org/10.1080/09613210701446325.
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Bellia, Laura, Alessia Pedace und Francesca Fragliasso. „Dynamic daylight simulations: Impact of weather file’s choice“. Solar Energy 117 (Juli 2015): 224–35. http://dx.doi.org/10.1016/j.solener.2015.05.002.
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Ravn, Mimi, Gabriela Mach, Ellen Kathrine Hansen und Georgios Triantafyllidis. „Simulating Physiological Potentials of Daylight Variables in Lighting Design“. Sustainability 14, Nr. 2 (13.01.2022): 881. http://dx.doi.org/10.3390/su14020881.
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A holistic approach to daylight dynamics in our built environment can have beneficial outcomes for both physiological and visual effects on humans. Simulations of how daylight variables affect light levels on the horizontal work plane are compared to their physiological effects, measured as melanopic EDI (Melanopic Equivalent Daylight Illuminance) on a vertical plane. The melanopic EDI levels were calculated in a simulated office space in ALFA software (Adaptive Lighting for Alertness) employing the daylight variables of orientation, time of day, season, sky conditions and spatial orientation. Results were analyzed for how daylight design can contribute to the physiological effects of dynamic light in office buildings. Daylight is shown to be a sufficient light source in the majority of cases to meet the recommended values of EDI and provide the suggested horizontal lx level according to the Danish Standards. A mapping of daylight conditions, focusing on the specific factors presented here, can provide guidelines in the design process and future smart building systems. The complex interrelationship between these parameters is important to acknowledge when working with daylight dynamics as a sustainable element in architecture and lighting design.
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Villalba, A., JM Monteoliva, R. Rodríguez und A. Pattini. „A dynamic performance analysis of passive sunlight control strategies in a neonatal intensive care unit“. Lighting Research & Technology 50, Nr. 2 (29.06.2016): 191–204. http://dx.doi.org/10.1177/1477153516656225.
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Neonatal intensive care units are a special lighting design challenge. Although natural light is highly desirable, it should be carefully planned to maximise benefits and minimise the problems associated with uncontrolled sunlight. This paper discusses the performance of different passive sunlight control strategies in a neonatal intensive care unit at the Dr. Humberto Notti Children's Hospital in Mendoza, Argentina, analysing their annual daylight behaviour through dynamic daylight simulations. The aim of this work is to optimise the use of daylight in neonatal intensive care units, considering the special lighting conditions required. Results show that, in this case study, the adequate implementation of solar control systems and the appropriate layout of the space for different uses according to surrounding building design and the characteristics of the local luminous climate can increase the useful daylight illuminance by up to 13%, while avoiding the incidence of direct sunlight at all times.
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Costanzo, Vincenzo, Gianpiero Evola, Luigi Marletta und Fabiana Pistone Nascone. „Application of Climate Based Daylight Modelling to the Refurbishment of a School Building in Sicily“. Sustainability 10, Nr. 8 (28.07.2018): 2653. http://dx.doi.org/10.3390/su10082653.
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This paper aims at promoting the use of Climate Based Daylight Modelling (CBDM) and related state-of-the-art metrics by discussing a range of design options to improve daylight fruition in rooms with different orientation, shape, function, and furniture of an elementary school that is located in the Mediterranean climate of Agira (Italy). The local climatic conditions, with clear skies for most of the year, require the integration of different shading and re-directing systems with the existing envelope and rooms’ layout. Results show that the dynamic modelling is a powerful and ‘creative’ tool in the designer’s hands, which helps to inform about the choice of the most appropriate technological solutions and on their architectural integration. Comparison with mostly used static daylight metrics, such as the average Daylight Factor (aDF) and the Uniformity Ratio (UR), reveals a contrast with what would be suggested if considering these metrics alone, as prescribed by the Italian legislation. These outcomes rebate the need of performing more accurate and dynamic daylight simulations using recorded (i.e., varying) rather than fixed sky conditions to correctly inform the design process.
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Santos, Iara Gonçalves dos, Thomas Auer und Roberta Vieira Gonçalves de Souza. „Optimized indoor daylight for tropical dense urban environments“. Ambiente Construído 17, Nr. 3 (Juli 2017): 87–102. http://dx.doi.org/10.1590/s1678-86212017000300164.
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Abstract Studies using metrics related to dynamic sky conditions for indoor daylight performance assessment in urban environment are rare in tropical latitudes. This study applied one of these metrics, the spatial Daylight Autonomy (sDA 300,50% ≥75%, IES LM 83-12) for Cuiabá (15ºS, 56ºW, Brazil), a savanna climate city with a high frequency of partly cloudy skies. Parametric simulations were used to investigate the availability of daylight in dense urban areas. So daylight conditions inside a reference room with varied depths located within a continuous urban canyon were simulated with Radiance/Daysim in Grasshopper/Honeybee. Dimensions of the street and heights of front buildings (obstructions) are also varied in order to observe the relation between the sky angle and the sDA, for the four main cardinal directions. The results of regression analysis for this case study showed that among all evaluated parameters, room depth tended to be the most relevant for the optimization of indoor daylight. Finally, limitations of this approach and opportunities for further investigations were discussed.
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Kiliç, Z. A., und A. Köknel Yener. „Determining Proper Daylighting Design Solution for Visual Comfort and Lighting Energy Efficiency: A Case Study for High-Rise Residential Building“. Journal of Physics: Conference Series 2069, Nr. 1 (01.11.2021): 012156. http://dx.doi.org/10.1088/1742-6596/2069/1/012156.
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Abstract Promoting the daylight performance that allows to provide visual comfort conditions by minimizing lighting energy consumption is possible with making a balance of window size, glazing type and shading strategy, which are the major design parameters of the daylighting system. Particularly, in high-rise buildings, where large openings enabling higher daylight availability and view out are preferred, the daylighting system becomes a crucial design consideration in terms of ensuring occupants’ visual comfort and improving lighting energy efficiency. This study aims to identify a proper daylighting design solution with regard to window area, glazing type and shading strategy for a high-rise residential building located in Istanbul considering visual comfort and lighting energy efficiency. The dynamic simulations are carried out by DIVA for Rhino version 4.1.0.12. The results are evaluated with the Daylight Autonomy (DA) to detect daylight availability in the space and Daylight Glare Probability (DGP) to describe the visual comfort conditions related to glare. Furthermore, the lighting energy consumption of each alternative is also analysed to determine the proper daylighting solution. The results have revealed that a proper daylighting solution providing visual comfort by improving lighting energy-efficiency can be determined by the evaluation of the daylight performance both qualitatively and quantitatively.
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Reinhart, Christoph F., und Oliver Walkenhorst. „Validation of dynamic RADIANCE-based daylight simulations for a test office with external blinds“. Energy and Buildings 33, Nr. 7 (September 2001): 683–97. http://dx.doi.org/10.1016/s0378-7788(01)00058-5.
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Garcia, Marina Da Silva, Roberta Vieira Gonçalves de Souza, Maíra Louise Martins de Freitas und Ana Carolina De Oliveira Veloso. „Integrating daylight simulation in the design process: comparative analysis between two computational platforms“. Gestão & Tecnologia de Projetos 15, Nr. 2 (29.06.2020): 69–83. http://dx.doi.org/10.11606/gtp.v15i2.161997.
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Daylighting presents an important role for high performance buildings. Currently, Building Information Modeling (BIM) has excelled in the Architecture and Engineering (A&E) industry as a collaboration and information exchange methodology that generates integrated computational models. Simulation plug-ins for BIM tools capable of performing daylighting simulations in a semi-automated way have been developed, thus presenting a more simplified simulation process and favoring the adoption of performance analysis since initial design stages; being a little explored subject. This article aims to investigate the Insight plug-in for Revit, focusing on its daylighting features. The workflow, input-output structure and results of Insight dynamic (sDA) and static (illuminance levels) daylighting metrics were analyzed, comparatively to the plug-in DIVA-for-Rhino, which simulation engines were considered validated by literature. Simulations on both software used the same model of a reference office space for the city of Belo Horizonte. Results indicate that Insight’s favors the daylighting analysis in the initial phases of the design process and allows the verification of code compliances, however determining materials optical properties presents some degree of complexity. Low sensitivity to glasses with low and medium values of light transmittance was noticed in the case study. Evidence of consideration of internal reflections of light rays (ambient bounces) close to 7 may leed to overestimated results in the case of low complexity models. This study intends to contribute to the understanding of the potentials and limitations of both analyzed tools, especially in regard to the specificities of BIM daylight simulation with Insight.
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Xue, Yibing, und Wenhan Liu. „A Study on Parametric Design Method for Optimization of Daylight in Commercial Building’s Atrium in Cold Regions“. Sustainability 14, Nr. 13 (23.06.2022): 7667. http://dx.doi.org/10.3390/su14137667.
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With the development of urbanization, more and more commercial buildings are built in cities, which is resulting in a large amount of building energy consumption that threatens the ecological environment of the earth. Lighting energy in commercial buildings occupies a large proportion of consumption, and improving the quality of natural daylight in commercial atriums is of great significance for building energy efficiency as well as improving indoor comfort. This paper proposes a method for optimizing the daylight quality of commercial atriums. Starting from the perspective of parametric design, this paper investigates the current status and theoretical research on the natural daylight of commercial atriums in cold regions, taking Jinan, China, as an example. Dynamic daylight and glare simulations were performed using Rhino + Grasshopper and Ladybug + Honeybee for every design parameter in the system, followed by correlation analysis and multiple linear regression analysis using SPSS to determine the degree of influence of each design parameter on the daylight quality of the atrium. Based on the results of the above analysis, the multi-objective optimization plug-in Octopus is used to find the combination of design parameters that can achieve the best indoor daylight. The results show that among a total of fourteen atrium design parameters, seven of them are significantly correlated with atrium daylight, and after regression analysis, it is found that the atrium design parameters affect the atrium daylight and glare in the following order: Skylight VT, Skylight ratio, Atrium inclination, Fabric coverage, Fabric VT, Wall reflectivity, Roof reflectivity. The optimal design parameters for commercial atrium daylight quality are obtained according to the Pareto front solution set, which provides some reference and ideas for improving the optimization of commercial atrium daylight in cold regions of China.
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Walkenhorst, Oliver, Joachim Luther, Christoph Reinhart und Jens Timmer. „Dynamic annual daylight simulations based on one-hour and one-minute means of irradiance data“. Solar Energy 72, Nr. 5 (Mai 2002): 385–95. http://dx.doi.org/10.1016/s0038-092x(02)00019-1.
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Nocera, Francesco, Alessandro Lo Faro, Vincenzo Costanzo und Chiara Raciti. „Daylight Performance of Classrooms in a Mediterranean School Heritage Building“. Sustainability 10, Nr. 10 (16.10.2018): 3705. http://dx.doi.org/10.3390/su10103705.
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In school buildings, natural light has considerable physiological benefits, and increases energy efficiency while reducing the operational energy consumption of buildings. It is thus crucial to maximize the amount of daylight, as well as to improve its quality, in educational premises. In Italy and other European countries, many historic buildings are reused as school buildings, changing their original function. This process of adaptive reusing is one method for conserving heritage buildings, however sometimes this process sacrifices the quality of daylight and well being of pupils. It has therefore become apparent that it is difficult to reconcile the cultural value of historic buildings with comfort standards. This study aimed to investigate the natural lighting performance of a school located in an historic building, and proposes different technological solutions to improve the visual comfort in classrooms whilst also respecting the cultural value of built heritage. Daylight performance was carried out in a representative classroom in the ‘Caserma Gaetano Abela’, an historical building located in Siracusa (Italy). A daylight model built in Radiance was first validated against an illuminance measurement campaign, and was then used to run detailed dynamic simulations. Climate Based Daylight Modelling (CBDM) metrics were used to show the achievable improvements in visual comfort conditions by means of proposed retrofit interventions. These interventions may also be used in other areas of southern Europe with similar climatic and constructive/distributive characteristics of architectural heritage.
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Khidmat, Rendy Perdana, Hiroatsu Fukuda, Beta Paramita, M. Donny Koerniawan und Kustiani Kustiani. „The optimization of louvers shading devices and room orientation under three different sky conditions“. Journal of Daylighting 9, Nr. 2 (17.08.2022): 137–49. http://dx.doi.org/10.15627/jd.2022.11.
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This paper presents parametric and multi-objective optimization (MOO) approach in optimizing daylight and energy consumption by incorporating louvres shading devices depicting three different sky conditions: Birmingham, UK, Jakarta, Indonesia, and Sydney, Australia. The study aims to observe the best louvre design configuration for each given context. The proposed optimization system iterates the logic of the louvre shading device as the dynamic design parameters such as overhang, blade size, spacing, and blade rotation, together with the room orientation to achieve maximum useful daylight illuminance (UDI) and the shading aperture while simultaneously reduces energy consumption. A total of 8509 simulations for three cities have been run and distributed for the purpose of this research. The results of MOO stated an improvement in UDI for Birmingham, Jakarta, and Sydney of 80%, 146.26%, and 79.48%, and cooling energy consumption of 28%, 3.26%, and 2.99% respectively.
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Acosta, Ignacio, Miguel Ángel Campano, Samuel Domínguez-Amarillo und Carmen Muñoz. „Dynamic Daylight Metrics for Electricity Savings in Offices: Window Size and Climate Smart Lighting Management“. Energies 11, Nr. 11 (13.11.2018): 3143. http://dx.doi.org/10.3390/en11113143.
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Daylight performance metrics provide a promising approach for the design and optimization of lighting strategies in buildings and their management. Smart controls for electric lighting can reduce power consumption and promote visual comfort using different control strategies, based on affordable technologies and low building impact. The aim of this research is to assess the energy efficiency of these smart controls by means of dynamic daylight performance metrics, to determine suitable solutions based on the geometry of the architecture and the weather conditions. The analysis considers different room dimensions, with variable window size and two mean surface reflectance values. DaySim 3.1 lighting software provides the simulations for the study, determining the necessary quantification of dynamic metrics to evaluate the usefulness of the proposed smart controls and their impact on energy efficiency. The validation of dynamic metrics is carried out by monitoring a mesh of illuminance-meters in test cells throughout one year. The results showed that, for most rooms more than 3.00 m deep, smart controls achieve worthwhile energy savings and a low payback period, regardless of weather conditions and for worst-case situations. It is also concluded that dimming systems provide a higher net present value and allow the use of smaller window size than other control solutions.
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Dalumo, David B., und Yaik-Wah Lim. „Comparative Study on Computer Simulation of Solar Shading Performance with Heliodon and Artificial Sky“. Journal of Daylighting 8, Nr. 1 (25.01.2021): 50–64. http://dx.doi.org/10.15627/jd.2021.4.
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Current technological advancement and the requirement for sustainability-driven practices has birthed increased demands for accuracy in performance and assessment of energy consumption in the built environment. Energy-efficient and sustainable building projects are to large extents dependent on achieving functional solar shading and sufficient daylighting in building interiors. Hence, the understanding and adequate evaluation of the sun and its dynamic influence on buildings right at the early stage of planning and design is essential for the development of performance-driven building designs. In this study, the performance simulation results of Integrated Environmental Solutions <Virtual Environment> software program modules are examined for accuracy in executing performance analysis of solar shading. This study assesses the shading prediction of Suncast; a virtual solar shading calculation tool, and RadianceIES for measuring daylight availability in a tropical climate region. The evaluation of shading performance with Suncast was validated through physical experiment by comparing the results obtained therein with shading analysis outcomes generated on a scale model with the aid of a heliodon. Likewise, RadianceIES daylighting simulations were compared with measurements realised from an artificial sky simulator. The results were further subjected to correlation tests to determine the relationship between simulation and physical experiment results. The computational evaluation approach presented more efficient means of conducting the performance simulations over the physical experiment methods which were limited by mechanical design of the components. Suncast and RadianceIES simulation results presented comparable equivalence with measurement output acquired from the heliodon and artificial sky respectively, with minimal variations in accuracy. Thus, demonstrating the ability of the computational simulation program in accurately predicting solar shading and daylight performance in buildings, this could benefit architects in the proper and efficient design of shading devices for building facades at early design stages.
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Nielsen, Martin Vraa, Svend Svendsen und Lotte Bjerregaard Jensen. „Quantifying the potential of automated dynamic solar shading in office buildings through integrated simulations of energy and daylight“. Solar Energy 85, Nr. 5 (Mai 2011): 757–68. http://dx.doi.org/10.1016/j.solener.2011.01.010.
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De Luca, Francesco, Raimo Simson, Hendrik Voll und Jarek Kurnitski. „Daylighting and energy performance design for single floor commercial hall buildings“. Management of Environmental Quality: An International Journal 29, Nr. 4 (11.06.2018): 722–39. http://dx.doi.org/10.1108/meq-10-2017-0110.
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Purpose Electric lighting accounts for a large share of energy consumption in commercial buildings. Utilization of daylight can significantly help to reduce the need for artificial lighting, increase workers productivity, customers’ satisfaction and consequently improve sales. However, excessive use of glazing and absence of lighting controls can contribute greatly to higher energy need for heating and cooling and cause undesired glare effects. Thus, optimizing the size, position and materials of external glazing, with the addition of deflectors and dynamic artificial lighting, can become key aspects in the design of sustainable low energy buildings. The purpose of this paper is to analyze daylight potential and energy performance of a hall-type commercial building, situated in the cold climate of Finland, by utilizing different combinations of skylights, windows and lighting controls. Design/methodology/approach The authors have used computer simulations to estimate daylight and energy performance of a single floor commercial building in relation to various combinations of skylights and windows with variable glazing materials, light deflectors and zonal lighting controls. Findings The results show that electric light energy saving potential ranges from a negligible 1.9 percent to a significant 58.6 percent in the case of glass skylights and wall windows using multi-zone lighting control. Total delivered energy ranges between increase of 1.5 and 21.2 percent in the cases with single zone lighting control and between decrease of 4.5 percent and increase of 4.5 percent in the cases with multi-zone control. The highest decrease in primary energy consumption was 2.2 percent for single zone and 17.6 percent for multi-zone lighting control. The research underlines the significant potential of electric light energy savings using daylighting strategies that, including the control of direct solar access for glare and internal gains, can be more than 50 percent. Originality/value This research combines accurate daylight and energy assessment for commercial hall buildings based in cold climate region with multiple design variations. The novelty of this work is the consideration of interior elements, shelves and deflectors, in the calculations. This is made possible through the combined use of validated simulation platforms for detailed annual daylighting and electric lighting calculation (Radiance and Daysim) and energy analysis (IDA-ICE, Equa Simulation AB). This method allows to obtain a reliable assessment of the potential of using natural light sources in buildings.
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Ruggiero, Silvia, Margarita-Niki Assimakopoulos, Rosa Francesca De Masi, Filippo de Rossi, Anastasia Fotopoulou, Dimitra Papadaki, Giuseppe Peter Vanoli und Annarita Ferrante. „Multi-Disciplinary Analysis of Light Shelves Application within a Student Dormitory Refurbishment“. Sustainability 13, Nr. 15 (23.07.2021): 8251. http://dx.doi.org/10.3390/su13158251.
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The achievement of sustainable cities and communities is closely linked to an accurate design of the buildings. In this context, the transparent elements of the building envelope have a crucial role since, on one hand, they are a bottleneck in regards to heat and mass transfers and sound propagation, while, on the other hand, they must allow daylight penetration. Thus, they are responsible for occupants’ thermal and visual comfort and their health. Considering passive solutions for windows, the light shelves can improve natural light penetration, reducing the lights’ electricity demand and controlling windows’ related thermal aspects. The scientific literature is characterized by several studies that analyze this topic, which, however, focus only on the daylight field and sometimes the energy saving for lights. Moreover, they often refer to fixed sky type for the simulations. The aim of the present study is to analyze the application of the light shelves with a multi-disciplinary approach, by means of dynamic simulations, in the EnergyPlus engine, for a whole year. A new methodological approach is presented in order to investigate the technology under different fields of interest: daylight, lighting energy, cooling and heating needs, and thermo-hygrometric comfort. The case study chosen is an existing building, a student dormitory belonging to the University of Athens. It is subject to a deep energy renovation to conform to the “nearly Zero Energy Building” target, in the frame of a European research project called Pro-GET-onE (G.A No. 723747). By means of the calibrated numerical model of this HVAC–building system, ten different configurations of light shelves have been investigated. The best solution is given by the application of an internal horizontal light shelf placed at 50 cm from the top of the window with a depth of 90 or 60 cm. It has been found that despite the reduction in electricity demand for lighting, the variation in heating and cooling needs does not always lead to a benefit.
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Kruisselbrink, Thijs, Myriam Aries und Alexander Rosemann. „A Practical Device for Measuring the Luminance Distribution“. International Journal of Sustainable Lighting 19, Nr. 1 (29.06.2017): 75–90. http://dx.doi.org/10.26607/ijsl.v19i1.76.
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Various applications in building lighting such as automated daylight systems, dynamic lighting control systems, lighting simulations, and glare analyzes can be optimized using information on the actual luminance distributions of the surroundings. Currently, commercially available luminance distribution measurement devices are often not suitable for these kind of applications or simply too expensive for broad application. This paper describes the development of a practical and autonomous luminance distribution measurement device based on a credit card-sized single-board computer and a camera system. The luminance distribution was determined by capturing High Dynamic Range images and translating the RGB information to the CIE XYZ color space. The High Dynamic Range technology was essential to accurately capture the data needed to calculate the luminance distribution because it allows to capture luminance ranges occurring in real scenarios. The measurement results were represented in accordance with established methods in the field of daylighting. Measurements showed that the accuracy of the luminance distribution measurement device ranged from 5% to 20% (worst case) which was deemed acceptable for practical measurements and broad applications in the building realm.
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Park, Jong Jin, und Bharat Dave. „Bio-inspired Parametric Design for Adaptive Stadium Façades“. Australasian Journal of Construction Economics and Building - Conference Series 2, Nr. 2 (14.04.2014): 27. http://dx.doi.org/10.5130/ajceb-cs.v2i2.3886.
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The challenge of developing sustainable, adaptive architecture requires unconventional approaches to innovative knowledge about composition and dynamic interaction between building façades and environmental conditions. These approaches are often inspired by biology, its complex fine-tuned behaviour and integration of living systems. This paper proposes a system inspired from the optics of reflecting superposition compound eyes to create responsive façade structures that capture and distribute daylight within a building in response to the movement of the sun. This is investigated using the parametric reshaping of a building envelop as part of solar radiation and target ray simulations. The prototype façade system is capable of adapting to different functional needs, locations, times of the day, and other contextual conditions.Keywords: Biomimetics, kinetic/adaptive façades, reflecting superposition compound eyes
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Kruger, Eduardo, Ricardo Almeida, André Matias, Pablo La Roche, Marlon Mulhbauer und Gabriel de Bem. „Implementation of a Dynamic Thermal and Illuminance Control System in Responsive Façades: Shading Study“. Advances in Environmental and Engineering Research 03, Nr. 03 (29.09.2022): 1–15. http://dx.doi.org/10.21926/aeer.2203038.
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This study evaluates three shading configurations designed and tested in a preliminary stage of responsive shading device development. The strategy is based on trigonometric relationships focused on solar angles at any given moment. The configurations are thus related to the ratio of the window area shaded by a responsive brise-soleil that provides 0%, 50%, or 100% shading of the indoor space, based on the daylight needs and the indoor thermal control realized. Shading simulations were performed for Pomona, California (latitude 34.04°) for different seasons of the year. Simplified thermal simulations were run in EnergyPlus to estimate the effectiveness of the method in a full-scale environment of three shading modes (static shading device, seasonal shading, and responsive brise soleil). Comparisons were made relative to a ‘no shading’ condition to improve indoor comfort conditions. The results of the visual analysis demonstrated a higher shading efficiency for lower solar angles between the equinoxes and winter. In terms of comfort, the response brise soleil was found to be promising in locations with seasonal variations. The response was low in predominantly tropical climates. Therefore, the strategy can be used to better control indoor conditions. The extent of solar heat gain and the degree of work-task illuminance can be improved to improve comfort in naturally conditioned spaces. The extent of energy consumption can be reduced.
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Bellia, Laura, Alessia Pedace und Francesca Fragliasso. „The impact of the software’s choice on dynamic daylight simulations’ results: A comparison between Daysim and 3ds Max Design®“. Solar Energy 122 (Dezember 2015): 249–63. http://dx.doi.org/10.1016/j.solener.2015.08.027.
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Androsics, Tamás, und Bálint Baranyai. „Optimized room arrangement and building shaping of an industrial and office facility“. Pollack Periodica 15, Nr. 2 (August 2020): 199–210. http://dx.doi.org/10.1556/606.2020.15.2.18.
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Abstract:This paper proposes the application of energy efficient, low tech (passive) building design strategies and concepts in an industrial facility case study, in order to create a building with high efficiency and comfort within the boundaries of a tight investment cost. The planning process is supported by dynamic thermal and daylight simulations. Two versions were considered, a conventional industry building and a low tech one with climate zone based space organization. According to the evaluation of thermal and visual comfort as well as energy demand the selected version with the innovative passive concept delivered considerably better performance. According to the constructor’s concept, the reference building had to be placed by minimal adaptation on the new site. After considering and calling this concept into question, a new ‘energy design’ concept was elaborated at the sketch planning level. The new concept was compared with the reference building and a quantified, simulation assisted evaluation was provided about the cases. Since there was an essential improvement in comfort and energy level and, in addition, at architectural standard, the constructor could have been convinced to accept the new concept.
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Wilder, Robin, Jaya Mukhopadhyay, Tom Femrite und Kevin Amende. „EVALUATING GLARE IN LEED CERTIFIED BUILDINGS TO INFORM CRITERIA FOR DAYLIGHTING CREDITS“. Journal of Green Building 14, Nr. 4 (September 2019): 57–76. http://dx.doi.org/10.3992/1943-4618.14.4.57.
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Extensive documentation has been developed to support the benefits of daylight for building occupants. Recently, the high performance building industry has shown a trend towards prioritizing better daylighting conditions. In response to this trend, the Leadership in Energy and Environmental Design (LEED) rating system now addresses daylighting and views as one of the criteria for compliance. However, effective daylighting has its challenges—most importantly addressing the issue of glare. This paper discusses the issue of glare and its relationship with requirements for effective daylighting within the criteria of the LEED rating system. In this study, a LEED certified building on Montana State University's campus was considered as a case study. This paper conducts an analysis by comparing the results obtained from compliance procedures for LEED with independent evaluations of glare using simulation and post occupancy evaluation surveys. This paper concludes that the ‘illuminance simulation’ option provided in the current version of LEED (LEED v4) for compliance does not adequately address the issue of glare. This paper provides recommendations to improve the LEED rating system for indoor environmental quality which include: the incorporation of glare assessment in the evaluation procedures of daylighting and views; the use of dynamic simulations that incorporate climatic conditions in the evaluation of daylighting; and evaluating glare in early stages of design by using simulation tools.
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Sari, Dany Perwita, und Pradhana Jati Budhi Laksana. „OPTIMIZATION BUILDING PERFORMANCE IN EARLY DESIGN STAGE USING INTEGRATED DYNAMIC MODEL“. MODUL 20, Nr. 2 (15.12.2020): 151–56. http://dx.doi.org/10.14710/mdl.20.2.2020.151-156.
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Considering the magnitude of energy loss in building, development of energy saving methods appears to be essential. Daylight plays a significant role in designing energy efficient buildings and improving visual comfort for the occupants. Many daylight analysis methods have been developed in this area. Most of these methods focus on opening maximization. These methods unfortunately might reduce comfort since it causes direct solar glare. There is a need for a reliable lighting simulation model to control the lighting strategy in early stage design. This study proposes a strategy for visualizing daylight analysis of buildings by using Integrated Dynamic Model (IDM). IDM is a combination of design tools used during the conceptual phase for holistic classroom that considers the building’s energy usage, daylight distribution, and thermal indoor environment. The optimization focus is related maximize the performance of the building envelope design. The purpose of this paper are; firstly, providing a new strategy for visualizing the predicting daylight while respecting architectural integrity. The second purpose is to facilitate the designer for choosing window and envelope design alternatives during early stages. The third is to maximize the positive impacts of daylight. Lastly, hopefully IDM could present a simplified simulation and analyze method with the timely, accurate and efficient process.
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Miri, Majid, und Elmira Ashtari. „Implementing a Digital Solution for Architectural Daylight Analysis in BIM Based Projects by developing a new plugin“. IOP Conference Series: Earth and Environmental Science 1099, Nr. 1 (01.11.2022): 012013. http://dx.doi.org/10.1088/1755-1315/1099/1/012013.
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Abstract To achieve a successful architectural project, it is essential for architects to truly understand and collaborate with other designers and engineers during the whole project. Regarding daylight analysis, what architects decide about the fenestration types, sizes, and their placements, interior layout design, interior or exterior materials, and finally the outer shape of the buildings may change the quantity and quality of natural light in the interiors. Moreover, such decisions about room configurations, fenestration, and materials can also directly or indirectly affect thermal comfort which is needed to be checked and confirmed by energy experts in the project. In this paper, a newly developed digital solution, and a new plugin called AftabRad is introduced. Its main goal is to export the 3D model from the BIM Modeling software to Radiance, as its daylight simulation core, and present the results back to the BIM software. This plugin can help daylight specialists to be fully or partially involved in any projects to assist architects or urban designers to easily calculate different types of static or dynamic daylight metrics by themselves. However, daylight specialists can do daylight calculations in the final stage or the project if it is needed. In such a project, since most of the daylight analyses for different types of alternatives can be done by architects, and regarding the nature of BIM-based project, by having direct dialogs with energy experts, the probability of achieving a well-daylit space, being thermally and visually comfortable, and fulfilling the daylight requirements can be much higher in comparison with doing daylight simulation just at the end of a project.
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Paule, Bernard, Eloise Sok, Samuel Pantet und Julien Boutiller. „Electrochromic glazings: dynamic simulation of both daylight and thermal performance“. Energy Procedia 122 (September 2017): 199–204. http://dx.doi.org/10.1016/j.egypro.2017.07.345.
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Dogan, T., und P. Stec. „Prototyping a façade-mounted, dynamic, dual-axis daylight redirection system“. Lighting Research & Technology 50, Nr. 4 (26.10.2016): 583–95. http://dx.doi.org/10.1177/1477153516675392.
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Various emerging technologies encourage the embedding of intelligent and climate responsive behaviour into architectural elements. Light-shelves have been used for decades to enhance natural light in spaces, however, their static nature is limiting their overall performance potential. This paper explores the convergence of rapid prototyping, parametric design and environmental modelling software to create a dynamic and direct-reflection daylight redirection system that significantly enhances daylight availability. A Radiance-based simulation workflow to optimise and study the system is used and a 1:1 mock-up is developed. The mock-up is based on a horizontal-light shelf with an array of mirror tiles that can tilt in two axes based on sun position. The potential impact of such a system is then evaluated for a side lit office space in multiple climates in the northern hemisphere. Results show that daylight can be redirected deep into the building more effectively and therefore improve daylight availability for otherwise underlit floor plan regions. Projected savings for electric lighting range from 17% to 35% compared with a static redirection system.
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Khidmat, R. P., H. Fukuda, Kustiani und A. P. Wibowo. „Designing louvers toward optimum daylight performance in Indonesia: a parametric study“. IOP Conference Series: Earth and Environmental Science 907, Nr. 1 (01.11.2021): 012012. http://dx.doi.org/10.1088/1755-1315/907/1/012012.
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Abstract Architecture has a strong relationship with the daylight universe. It implicates further occupants’ behaviour toward visual comforts, healthiness, and energy consumption. The daylight simulation in the early phase of design benefits the architect in predicting the possibilities of daylight-related target goals during the design process. A shading system is one of the strategies in approaching passive design to prevent an excessive amount of undesirable daylight intensity. This paper investigates different sun louvers shading patterns and their relation to the Useful Daylight Illuminance (UDI) in the context of Indonesia, presented by incorporating the EPW file of Jakarta. Parametric and multi-objective optimization has been used to optimize, explore, and map the design possibilities based on the louver shading component as dynamic parameters. Rhinoceros and Grasshopper, as parametric-based modelling software, were used as the primary modelling platform, while the Honeybee and Ladybug plugin were used to undergo the daylight-related environmental analysis. The design exploration iterates 2.160 design solutions with a value of dynamic parameters and the targeted UDI value embedded in each. The results show that the solution founded from iteration process has more areas of illuminance within 300 lx to 500 lx by about 15%.
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Achsani, Rizky Amalia, Angela Upitya Paramitasari, Marisa Sugangga, Surjamanto Wonorahardjo und Sugeng Triyadi. „Optimization of Daylighting Outdoor Availability in Urban Kampung“. IOP Conference Series: Earth and Environmental Science 1058, Nr. 1 (01.07.2022): 012006. http://dx.doi.org/10.1088/1755-1315/1058/1/012006.
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Abstract Liveability interprets as making residents comfortable in their built environment. As daylighting becomes a necessity for human beings, daylight availability can improve the liveability of dwelling habitats, especially in high-density urban areas. Relayouting the building block without reducing the usable floor area can improve daylight availability. Kampung Braga is an example of how a heavy slum area has a low liveability quality and classifies into impoverished slum settlements at the stake of being resettled. The spatial arrangement becomes necessary to enhance the community’s quality of life. This article aims to examine how the intervention through urban layout can affect daylight availability to improve the liveability for kampung Braga. This research uses simulation methods with climate-based daylight modelling (CBDM) software to simulate daylighting with a dynamic approach. Rhinoceros for modelling, Honeybee for vertical sky component (VSC) simulation, and DIVA for daylight availability simulation. Based on the simulation on three alternative urban layouts in line with spatial plan context, it is shown that intervention through urban layout and typology of kampung Braga has shown better VSC and daylight availability values than the existing conditions. It is necessary to pay attention to the context of the building around the site when designing a specific building typology. Modifying configuration, floor height, model, and orientation show a better VSC reception and vertical facade illumination. City stakeholders need to be aware of the low liveability of the urban kampung. Planning the right urban plan design can improve daylighting availability and increase the liveability of the urban kampung.
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Yılmaz, Feride Şener. „EVALUATION OF DAYLIGHT PROVISION AND DAYLIGHT GLARE PROBABILITY FOR DIVERSE WORKSPACE CONFIGURATIONS“. Journal of Green Building 17, Nr. 1 (01.01.2022): 199–224. http://dx.doi.org/10.3992/1943-4618.17.1.199.
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ABSTRACTS Office environments can be integrated with particular workspace configurations owing to diverse tasks encountered in these workspaces. This study attempts to discern how effective different office workstation configurations are on daylight performance and tries to quantify this effect by means of a dynamic daylight simulation based approach, depending on the criteria addressed in EN 17037:2018 Standard. The purpose of this study is to explore the impact of workstation configurations on daylight provision and glare protection in workspaces through several configuration setups. In this study, climate based daylight metrics are used for daylight performance determination and assessment of discomfort glare caused by daylighting is performed by Daylight Glare Probability (DGP) index. This study aims to contribute to the growing body of research in the scope of EN 17037:2018 for daylighting in office environments and the obtained results represent the significance of daylighting and visual comfort conditions for diverse workstation configurations.
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Yılmaz, Feride Şener. „EVALUATION OF DAYLIGHT PROVISION AND DAYLIGHT GLARE PROBABILITY FOR DIVERSE WORKSPACE CONFIGURATIONS“. Journal of Green Building 17, Nr. 1 (01.01.2022): 199–224. http://dx.doi.org/10.3992/jgb.17.1.199.
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ABSTRACTS Office environments can be integrated with particular workspace configurations owing to diverse tasks encountered in these workspaces. This study attempts to discern how effective different office workstation configurations are on daylight performance and tries to quantify this effect by means of a dynamic daylight simulation based approach, depending on the criteria addressed in EN 17037:2018 Standard. The purpose of this study is to explore the impact of workstation configurations on daylight provision and glare protection in workspaces through several configuration setups. In this study, climate based daylight metrics are used for daylight performance determination and assessment of discomfort glare caused by daylighting is performed by Daylight Glare Probability (DGP) index. This study aims to contribute to the growing body of research in the scope of EN 17037:2018 for daylighting in office environments and the obtained results represent the significance of daylighting and visual comfort conditions for diverse workstation configurations.
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Du, Jiangtao, und Steve Sharples. „A Dynamic Analysis Of The Impact Of Air Pollution On The daylight Availability In An Open-plan Office In London“. Light & Engineering, Nr. 01-2021 (Februar 2021): 94–103. http://dx.doi.org/10.33383/2020-064.
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The deposition of air pollutants on glazing can significantly affect the daylight transmittance of building fenestration systems in urban areas. This study presents a simulation analysis of the impact of air pollution and glazing visual transmittance on indoor daylight availability in an open-plan office in London. First, the direct links between glazing visual transmittance and daylighting conditions were developed and assessed. Second, several simple algorithms were established to estimate the loss of daylight availability due to the pollutant deposition at the external surface of vertical glazing. Finally, some conclusions and design strategies to support facade planning at the early design stage of an urban building project were developed.
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Hosseini, Seyed Morteza, Fodil Fadli und Masi Mohammadi. „Biomimetic Kinetic Shading Facade Inspired by Tree Morphology for Improving Occupant’s Daylight Performance“. Journal of Daylighting 8, Nr. 1 (02.02.2021): 65–85. http://dx.doi.org/10.15627/jd.2021.5.
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Many recent studies in the field of the kinetic façade developed the grid-based modular forms through primary kinetic movements which are restricted in the simple shapes. However, learning from biological analogies reveals that plants and trees provide adjustable daylighting strategies by means of multilayered and curvature morphological changes. This research builds on a relevant literature study, observation, biomimicry morphological approach (top-down), and parametric daylighting simulation to develop a multilayered biomimetic kinetic façade form, inspired by tree morphology to improve occupants’ daylight performance. The first part of the research uses a literature review to explore how biomimicry influences the kinetic façade’s functions. Then, the study applies the biomimicry morphological approach to extract the formal strategies of tress due to dynamic daylight. Concerning functional convergence, the biomimicry principles are translated to the kinetic façade form configuration and movements. The extracted forms and movements are translated into the design solutions for the kinetic façade resulting in the flexible form by using intersected-multilayered skin and kinetic vectors with curvature movements. The comprehensive annual climate-based metrics and luminance-based metric simulation (625 alternatives) confirm the high performance of the bio-inspired complex kinetic façade for improving occupants’ daylight performance and preventing visual discomfort in comparison with the simple plain window as the base case. The kinetic façade provides daylight performance improvement, especially the best case achieves spatial Daylight Autonomy, Useful Daylight Illuminance, and Exceed Useful Daylight Illuminance of 50.6, 85.5, 7.55 respectively.
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Mousavi, Seyed Mohammad, Tareef Hayat Khan und Amin Mohammadi. „Adjustable Internal Shading for Home Office Daylighting in Tropical Climates“. International Journal of Design & Nature and Ecodynamics 16, Nr. 6 (21.12.2021): 609–24. http://dx.doi.org/10.18280/ijdne.160601.
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Home-based workspaces have considerably increased all over the world. Besides, the recent outbreak of the COVID-19 disease forced many people to work from their homes. However, existing residential apartment buildings (ERABs) had been designed for accommodation but not for office works. Low-quality visual environments in ERABs, which have no shading controls on their windows, are evident in tropical climates with extremely high solar radiation. Thus, interior retrofit is significant to provide visual comfort for users in ERABs with low flexibility for modification of their facades. Different interior design variables were simulated by the Radiance-based program to analyse daylighting in a closed-plan room. Before the simulation experiments, field measurement of daylight was performed under a tropical sky to validate the results, and the findings revealed significant Pearson correlations. This paper showed that ERABs are confronting extremely high indoor daylight quantity, up to 10,228 lx, and low quality with intolerable glare. An adjustable model of internal shading, including an integrated Venetian blind with a horizontal light shelf and the window films, was proposed to improve quantitative and qualitative performances of daylighting in tropical regions. This dynamic model could be adjusted to various positions based on daylighting conditions in the buildings. By comparing the simulation results of this model with the base model, indoor illuminance levels could successfully reduce from 32% to 86%; Illuminance Uniformity Ratio (IUR) and Target Daylight Illuminance (TDI) significantly improved up to 180% and 300%, respectively; Daylight Glare Probability (DGP) and CIE Glare Index (CGI) changed from intolerable to imperceptible status. Accordingly, the proposed model can considerably improve daylight quantity and quality in the test room during different times. This study concludes that the dynamic model of internal shadings could provide efficient daylighting, by decreasing the extremely high indoor illuminance and glare in the ERABs in tropical climates.
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Li, Jie, Qichao Ban, Xueming Chen und Jiawei Yao. „Glazing Sizing in Large Atrium Buildings: A Perspective of Balancing Daylight Quantity and Visual Comfort“. Energies 12, Nr. 4 (21.02.2019): 701. http://dx.doi.org/10.3390/en12040701.
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Due to the multiple benefits on energy, well-being, comfort, and the economy, the utilization of daylight remains an imperative topic of architectural design. With the remarkable ability of drawing and increasing daylight deep into the core of buildings, atriums with a large proportion of glazing have become one of the most preferred design forms. The concomitant and unexpected visual discomfort in modern buildings, however, has drawn increasing concerns. Therefore, this study investigated the relation between glazing proportion and daylight performance, as well as the impact of building height and atrium types on daylight performance in atrium buildings by using an annual dynamic simulation method and metrics. It was found that extending glazing proportion had prominent effectiveness in the enhancement of daylighting; building height had a negative influence; round and square types of buildings performed much better than rectangular ones. Moreover, to inform a practical design, we analyzed the link between increasing daylight and visual comfort from the perspective of balancing them, and then proposed a design guide for atrium roof-glazing sizing.
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Voloboi, A. G., V. A. Galaktionov, E. A. Kopylov und L. Z. Shapiro. „Simulation of natural daylight illumination determined by a high dynamic range image“. Programming and Computer Software 32, Nr. 5 (Oktober 2006): 284–97. http://dx.doi.org/10.1134/s0361768806050057.
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Ruiz, Alejandro, Miguel Ángel Campano, Ignacio Acosta und Óscar Luque. „Partial Daylight Autonomy (DAp): A New Lighting Dynamic Metric to Optimize the Design of Windows for Seasonal Use Spaces“. Applied Sciences 11, Nr. 17 (04.09.2021): 8228. http://dx.doi.org/10.3390/app11178228.
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Nowadays, daylight dynamic metrics are the most useful indicators to quantify the use of natural light, with daylight autonomy (DA) being one of the most widespread among all of them. This metric represents the percentage of the occupied time throughout the year in an indoor space when daylight reaches the minimum illuminance level to develop a specific task. Accordingly, the higher the percentage of DA, the shorter the switching on time of electric lighting. However, this metric considers for its calculations all business days of a whole standard year, and is thus not an accurate indicator for seasonal use spaces such as school classrooms. In this context, a variant of this metric is proposed, namely partial daylight autonomy (DAp), which is a non-lineal derivation of DA that considers those seasonal use spaces, helping to define the real percentage of indoor daylight use in order to properly quantify the accurate switching on time of electric lighting and therefore its energy consumption. As deduced from the analysis, the more precise results provided by DAp reach divergences close to 10% in comparison with the original conception of DA. Thus, this metric serves to estimate more accurately the impact on energy consumption if an electric lighting control system is implemented through lux meters. This new proposal has been monitored under real sky conditions in a test cell, providing converging results with those observed in the simulation process.
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Dabe, Trupti J., und Alpana R. Dongre. „Analysis of performance of the daylight into critical liveable area of ‘type design’ dwelling unit on the basis of daylight metrics for hot and dry climate“. Indoor and Built Environment 27, Nr. 1 (20.09.2016): 129–42. http://dx.doi.org/10.1177/1420326x16669844.
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Daylighting integrated with artificial lighting control is recognized as an important and useful strategy in energy-efficient building designs. The prediction of the internal daylight levels is a key stage in daylighting designs. For this research, the ‘type design’ residential quarters building as a case has been selected from Nagpur region in central India having a hot and dry climate. These ‘type design’ have the major issues related to the performance of daylight and thermal comfort due to lack of some rules related to sizes of fenestrations in the development control regulation. The aim of this research is to evaluate the most critical liveable area of a dwelling unit of ‘type design’ for daylight and thermal comfort. This research includes evaluation of the selected parameters by comparative analysis of useful daylight illuminance (UDI), daylight autonomy (DA), thermal comfort hours and carpet area to window ratio (CAWR) with the help of dynamic simulation by using ‘Daysim’, ‘radiance analysis tool’ and ‘temperature distribution tool’ of Ecotect 2011 software. The findings of this research arrive to derive the CAWR with respect to orientation (four cardinal directions) of the building without compromising the thermal comfort with respect to the temperature of a dwelling unit of ‘type design’.
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Konstantzos, Iason, Athanasios Tzempelikos und Ying-Chieh Chan. „Experimental and simulation analysis of daylight glare probability in offices with dynamic window shades“. Building and Environment 87 (Mai 2015): 244–54. http://dx.doi.org/10.1016/j.buildenv.2015.02.007.
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Xue, Yibing, und Wenhan Liu. „A Study on the Optimization of Atrium Daylight and Energy Performance through Skylight and Shading Design in Commercial Buildings in Cold Zones“. Buildings 13, Nr. 1 (13.01.2023): 228. http://dx.doi.org/10.3390/buildings13010228.
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Atriums play an irreplaceable role within the plan of modern commercial buildings. However, the presence of skylights makes the atrium suffer from unfavorable conditions such as overheating, high energy consumption, and glare, which can be partially reduced by the sun-shading design of skylights. In this paper, we conducted a field test and questionnaire survey on the daylight quality of commercial buildings in cold zones in China to find out the current problems of daylight quality in atriums and to establish a model of commercial atrium. After the dynamic daylight and energy consumption simulation, the sensitivity analysis of daylight and energy performance is performed for the skylight and shading (SAS) design parameters under three shading types. Finally, the Pareto front solution set of optimized commercial atrium daylight, visual comfort, and energy performance for the three shading types has been obtained using a multi-objective search tool. The results show that SRR has the greatest effect on sDA, DGP, and EUI in all shading cases; while SGT has a greater effect on EUI than on daylight quality; FC has a greater effect on EUI than FV on EUI; and LS and LI have a more significant influence on daylight and visual comfort. The optimal SAS values of no shading, fabric shading and louvered shading were screened as SRR is 0.4–0.5, SGT is Double silver Low-E insulating glass; SRR is 0.5–0.6, SGT is Double silver Low-E insulating glass, FV is 0.5–0.7, FC is 0.5–0.6; SRR is 0.6–0.7, SGT is Double silver Low-E insulating glass, LS is 100 mm/125 mm, and LI is 60–70°. It is expected that this study will provide some information and reference for the design of commercial atriums in cold zones in the future.
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Rabani, Mehrdad, Habtamu Bayera Madessa und Natasa Nord. „Building Retrofitting through Coupling of Building Energy Simulation-Optimization Tool with CFD and Daylight Programs“. Energies 14, Nr. 8 (14.04.2021): 2180. http://dx.doi.org/10.3390/en14082180.
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Simultaneous satisfaction of both thermal and visual comfort in buildings may be a challenging task. Therefore, this paper suggests a comprehensive framework for the building energy optimization process integrating computational fluid dynamics (CFD) daylight simulations. A building energy simulation tool, IDA Indoor Climate and Energy (IDA-ICE), was coupled with three open-source tools including GenOpt, OpenFOAM, and Radiance. In the optimization phase, several design variables i.e., building envelope properties, fenestration parameters, and Heating, Ventilation and Air-Conditioning (HVAC) system set points, were selected to minimize the total building energy use and simultaneously improve thermal and visual comfort. Two different scenarios were investigated for retrofitting of a generic office building located in Oslo, Norway. In the first scenario a constant air volume (CAV) ventilation system with a local radiator in each zone was used, while an all-air system equipped with a demand control ventilation (DCV) was applied in the second scenario. Findings showed that, compared to the reference design, significant reduction of total building energy use, around 77% and 79% in the first and second scenarios, was achieved respectively, and thermal and visual comfort conditions were also improved considerably. However, the overall thermal and visual comfort satisfactions were higher when all-air system was applied.
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Treacy, Gillian. „Out of “touch”? − An experiential pedagogical approach to daylighting in architecture and interior design education“. SHS Web of Conferences 64 (2019): 02010. http://dx.doi.org/10.1051/shsconf/20196402010.
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A new challenge is emerging. Contemporary built environment pedagogy demands engagement with both analogue and digital tools for simulation and verification of lit architectural environments. The use of analogue tools within architectural design education grasps onto the historically valued craftsmanship of drawing and physical models to measure, represent and understand our lit environment ambiance. Digital tools can provide efficient, simultaneous and precise verification of lit architectural interior space through 3D computer modelling and calculation software. However, the understanding and representation of daylit scenarios is becoming more numerically complex as lighting metrics and software gain in accuracy and dynamic range. With the majority of easily accessible software tools focussing on numerical verification, the ephemeral ambience that daylight in particular creates in interior architectural spaces is becoming ever more difficult to grasp for the architectural design student and practitioner. This paper seeks to challenge the exclusive use of digital tools for the understanding and representation of lit interiors by proposing that this methodology cultivates design epistemologies that are out of “touch”. Questionnaire findings and workshop studies are presented as pedagogical constructs are proposed inviting physical, experiential learning of lighting principles in collaboration with numerical and digital modes of learning to provide connections and translations to develop through ‘touch’ing light.
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Carlos, Jorge S. „Window assessment at different level height on a Portuguese typical street canyon“. WEENTECH Proceedings in Energy 4, Nr. 2 (02.01.2019): 143–59. http://dx.doi.org/10.32438/wpe.0218.
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This paper presents the results of a study investigating the ventilation mode, the solar heat gain and daylight performance via vertical fenestration on a street canyon. In recent years there has been a growing awareness in energy-efficient building design and operation of the building stock. Dynamic envelope/window systems have potential to optimize the performance of the building, between airing, solar heat gain and daylight admission. However, higher thermal resistance glazing implies a reduction of solar transmittance. A typical street canyon in Portugal was used for the present study. Three different room ratios and two types of windows at two different floors were used for comparison. Different simulation tools were used during this study. To be comparable with other studies several ratios were present, as the window/wall, the glazing/wall ratios, the window/floor and the glazing/floor ratios as well as the window opening area. This paper presents the obtained airflow and solar gains on both heating and cooling season in addition to the level of daylight factor. It was found that specific adaptive actions to improve indoor environmental quality and reduce the need of energy consumption are needed.
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Shao, Zebiao, Bo Wang, Yao Xu, Liang Sun, Xichen Ge, Lvpei Cai und Cheng Chang. „Dynamic Concentrated Solar Building Skin Design Based on Multiobjective Optimization“. Buildings 12, Nr. 11 (18.11.2022): 2026. http://dx.doi.org/10.3390/buildings12112026.
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Building skin can provide comprehensive functions of energy production, daylighting, and shading with an integrated transmissive solar-concentrating panel. In this study, Rhino Grasshopper parametric modeling, Ladybug tool performance simulation, and Octopus multiobjective optimization platforms are used to carry out experimental research. This study establishes the optimal relationship between the conflicting objectives of light environment creation and energy production efficiency of solar-concentrating skin by controlling three variables, namely the size of the solar-concentrating module, the rotation angle, and the number of modules, aiming to design the optimal solution and build a multiobjective optimization technology framework for the solar-concentrating skin of an office space. A comparison and analysis of the scenarios indicate a dynamic concentrating skin that can effectively reduce the daylight glare probability (DGP) by 70% and increase the useful daylight illuminance (UDI) by 10%, while achieving energy production. The correlation between the variables and the performance indices of the solar-concentrating skin was obtained as angle > width > length > amount, and the optimal design interval for each parameter variable. This study reveals the laws of how parameter changes affect individual indicators, which can provide ideas for the design of dynamic concentrating skins and building integration, methods for improving the balanced design of indoor light environments and building capacity, and a technical framework for multiobjective optimization processes.
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Omar Elshiwihy, Shorouk, und Hassam Nasarullah Chaudhry. „Parametric Study on Determining Optimum Shading Techniques for Urban High-Rise Dwellings“. Urban Science 3, Nr. 3 (30.07.2019): 85. http://dx.doi.org/10.3390/urbansci3030085.
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Shading techniques constitute one of the most passive, beneficial strategies for reducing energy consumption in urban dwellings. Shading affects many factors, for example, the solar gains and radiations falling on the façade, which are considered the most significant in increasing the cooling energy demand in hot climates. This paper conducts a parametric study on external and internal shading devices and establishes their impact on energy consumption, daylight levels, and ventilation. The work was conducted using Integrated Environmental Simulation Virtual Environment (IES-VE) and Computational Fluid Dynamics (CFD) numerical methods. The results revealed that optimised shading can influence savings in terms of energy and cooling, in addition to the enhancement of daylighting and reduction of glare. After studying all these factors associated with the different shading techniques investigated, the findings revealed that all shades affect the energy, daylight and ventilation parameters positively. However, despite all external and internal shadings showing improvements, the egg crate shade was determined as that which provided the optimum energy saving, while enhancing daylight and improving natural ventilation for a sustainable building design.
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Choi, Woo Ram, Seok Jong Han und Young Il Yun. „A Study on the Window Planning of School Building Using ECOTECT Simulation -By Dynamic Daylight Simulation Using Weather Data-“. Journal of the Korea Institute of Ecological Architecture and Environment 13, Nr. 6 (31.12.2013): 77–82. http://dx.doi.org/10.12813/kieae.2013.13.6.077.
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Mebarki, Chahrazed, Essaid Djakab, Abderrahmane Mejedoub Mokhtari, Youssef Amrane und Lotfi Derradji. „Improvement of Daylight Factor Model for Window Size Optimization and Energy Efficient Building Envelope Designs“. Journal of Daylighting 8, Nr. 2 (29.07.2021): 204–21. http://dx.doi.org/10.15627/jd.2021.17.
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Based on a new approach for the prediction of the Daylight Factor (DF), using existing empirical models, this research work presents an optimization of window size and daylight provided by the glazed apertures component for a building located in a hot and dry climate. The new approach aims to improve the DF model, considering new parameters for daylight prediction such as the orientation, sky conditions, daytime, and the geographic location of the building to fill in all the missing points that the standard DF, defined for an overcast sky, presents. The enhanced DF model is considered for the optimization of window size based on Non dominated Sorting Genetic Algorithm (NSGA II), for heating and cooling season, taking into account the impact of glazing type, space reflectance and artificial lighting installation. Results of heating and cooling demand are compared to a recommended building model for hot and dry climate with 10% Window to Wall Ratio (WWR) for single glazing. The optimal building model is then validated using a dynamic convective heat transfer simulation. As a result, a reduction of 48% in energy demand and 21.5% in CO2 emissions can be achieved. The present approach provides architects and engineers with a more accurate daylight prediction model considering the effect of several parameters simultaneously. The new proposed approach, via the improved DF model, gives an optimal solution for window design to minimize building energy demand while improving the indoor comfort parameters.
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Erdemir, Gökce, und Alpin Köknel Yener. „A Study on Daylight Performance Evaluation in Primary School Classrooms“. Orclever Proceedings of Research and Development 1, Nr. 1 (31.12.2022): 257–70. http://dx.doi.org/10.56038/oprd.v1i1.184.
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From the early beginning of construction in history, priority of using daylight has played an active role in the settlement decision, building shape and façade design. Today, the necessity of conscious consumption has become an accepted fact due to the depletion of energy resources. For this reason, the effective use of daylight and reducing lighting energy consumption have become one of the most important goals of today's architecture.
The purpose of the natural lighting system is providing sufficient daylight to the target area, considering the visual comfort conditions. Nowadays, for the architectural design of buildings, the use of passive systems is primarily preferred in terms of energy efficiency. The use of natural lighting as a passive system, minimizing building lighting energy requirements and creating the desired visual environment should be prioritized in terms of providing visual comfort. In educational buildings, it is vital to design a lighting system in which daylight is used effectively in order to meet the visual needs of the instructors and students and to minimize the usage of lighting energy. Within the scope of the TS EN 17037 standard, which was developed for daylight assessment in buildings and approved by CEN on 29.07.2018 and lastly updated on 02.03.2022, the criteria for daylight assessment is handled under 4 headings: daylight provision, view out, exposure to sunlight and protection from glare. For each criteria specified in indoor daylight assessment, three grades are defined as 'minimum, medium and high'.
In this study, the criterion of providing daylight in educational buildings was examined in accordance with the TS EN 17037 standard. With the study, it is aimed to develop an approach to determine the optimum values of the parameters of direction, obstacle presence and transparency ratio in the context of providing sufficient daylight in the primary classroom design. Investigated building type is the primary school building classroom, which was created in optimum dimensions according to the characteristics of primary education classrooms defined in the ‘Educational Buildings Minimum Design Standards Guide’ published by the Ministry of National Education. It is aimed to evaluate and develop the criteria given in the ‘Educational Buildings Minimum Design Standards Guide’ according to the TS EN 17037 standard, which defines daylight performance in Turkey. The classroom model discussed within the scope of the study has been modeled with the Rhino program according to the alternative transparency rates and obstacle situations; In the simulation, the Climate Studio plugin, which was developed for the calculation of dynamic evaluation parameters, was used. The area handled by using evaluation methods according to the 17037 standard included in the software was evaluated in terms of annual daylight performance. The availability of target illuminance levels in half of the daylight hours throughout the year was calculated using the daylight autonomy method, and the climatic data of the province of Istanbul were used as a representative in the calculations. The results obtained were evaluated according to the TS EN 17037 Daylight Standard, and the scenarios created were classified as 'minimum, medium and high' according to the availability of daylight. According to this classification, optimum transparency ratio, window direction and obstacle conditions conditions for the city of Istanbul in primary school classroom design are discussed. The optimal transparency ratios for each aspect are discussed. The minimum transparency ratio values given in the ‘Educational Buildings Minimum Design Standards Guide’ were compared with the optimum transparency ratios obtained.
Keywords: Daylight Performance, TS EN 17037, Primary school classrooms, Window Design
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Hangga, A., A. M. Nisa, M. Apriliyanto, M. Afandi, D. Pratama, M. A. Aziz, A. Wijanarko und S. Witrianto. „Modelling of lighting system utilizing natural and artificial lighting using DIALux“. IOP Conference Series: Earth and Environmental Science 969, Nr. 1 (01.01.2022): 012024. http://dx.doi.org/10.1088/1755-1315/969/1/012024.
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Abstract The uniformity of daylight in the classroom contributes to indoor visual comfort in the learning process. A Classroom that has non-uniform illuminance and is unsuitable with 350-3000 lux can affect visual discomfort. This study aims to design a classroom lighting system using daylight and artificial lighting according to Indonesian National Standard (SNI) 6197-2011 to get visual comfort. The results of this study are expected to increase the efficiency of electricity consumption and to solve the visual discomfort problem followed by SNI 6197-2011. This research using E11-210 and E11-112 classroom Universitas Negeri Semarang with the dimension about 12m x 9m x 3,5m. Based on observation, the classrooms had an illuminance of more than 20,000 lux with a uniformity less than 0,6 in the afternoon. Simulation in this study using Dialux Evo software with replacing the layouts of lamp, type of lamps and armature, modifying power of lamp, and implementing dynamics blinds. The result shows that the simulation can solve visual discomfort corresponding to SNI 6197-2011. This paper also presents that LED Tube power modification from 21 – 25 watts can save electricity costs by 37.3%.