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Journal articles on the topic 'Daylight strategy'
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1
Voll, Hendrik, and Erkki Seinre. "A METHOD OF OPTIMIZING FENESTRATION DESIGN FOR DAYLIGHTING TO REDUCE HEATING AND COOLING LOADS IN OFFICES." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 20, no. 5 (2014): 714–23. http://dx.doi.org/10.3846/13923730.2013.801920.
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Modern office building designs tend to increase the window share per facade to make the building more impressive with extensive visibility and well daylit rooms. In general, an increased window share results in higher energy usage and higher costs of heating and cooling, but these disadvantages can be reduced with a more careful design. The aim of this paper is to show the influence of window design and room layout on heating and cooling demand and daylight availability in office buildings in northern Europe. The results in the paper are based on design calculations for two different room types and daylight measurements on two room scale models in a daylight laboratory. The calculations show the influence of window design parameters on the cooling and heating demand. The daylight measurements show the influence of window design parameters on the availability of daylight. The results have then been combined to show a feasible window design regarding daylight availability and the resulting cooling and heating demands for different window orientations. The results show that in most cases it is possible to find a combination of window share and window solar factor that is feasible with regard to daylight as well as cooling and heating. The main finding is that there is a smaller or wider range of feasible designs for different window orientations.
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Nabil, Hala A., and Ahmed A. Fikry. "Testing Daylight availability for cliff dwellings by adding Clerestory: A case study in Taba, Egypt." IOP Conference Series: Earth and Environmental Science 1056, no. 1 (2022): 012030. http://dx.doi.org/10.1088/1755-1315/1056/1/012030.
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Abstract The succession of day and night affects human beings’ psychological and health status. Therefore it is essential to transfer the proper amount of daylight. The one-directional daylight source causes the most significant problem in dwellings: the deep gloom sectors. The Clerestory is an old strategy that provides daylight and air inside zones. We develop a strategy to solve daylight problems for earth-sheltered and excavated buildings. The main goal is to measure the enhancement of daylight penetration of excavated mountainous buildings settled in cliffs at various slopes after setting Clerestory. The research presents a simulation study to test Clerestory’s capability to penetrate daylight by using the DIVA plug-in as a tool. The study model is a touristic chalet with a total built-up area of 100sq—meters in Taba, Egypt. The chalet overlooks the Red Sea with a south-oriented facade. The exposed roof’s material and the Clerestory distance inward the facade control daylight penetration and cause a homogeneous daylight distribution.
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Sari, Dany Perwita, and Pradhana Jati Budhi Laksana. "OPTIMIZATION BUILDING PERFORMANCE IN EARLY DESIGN STAGE USING INTEGRATED DYNAMIC MODEL." MODUL 20, no. 2 (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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Kiliç, Z. A., and 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, no. 1 (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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Rynska, Elzbieta, and Maryia Yanchuk. "Dense and Proximate Development—Daylight in the Downtown Area of a Compact City." Sustainability 14, no. 2 (2022): 774. http://dx.doi.org/10.3390/su14020774.
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Daylight is of utmost importance and should be the main source of light in most areas dedicated to working and living. When considering our contemporary way of living, it can be easily discerned that most of our life is spent indoors, yet in a typical architectonic design approach, daylight is too often hardly of consequence. Hence daylight becomes a critical factor. Designers comply with the legal requirements of the solar hours required for areas subjected to constant use. Simultaneously for electrical engineers’ daylight is only an additional source of light valued only where energy efficiency is concerned. The basic idea of this research is to, starting from the concept level, design the building’s volume in line with energy efficiency requirements and user expectations using daylight access strategy as the main parameter. This scope of research has been a subject of various scientific theses conducted within the last years at the Faculty of Architecture Warsaw University of Technology. This paper is dedicated to the latest and most developed outcomes. The presented solution is an architectonic point of view dedicated to the use of the daylight factor in office areas located in a dense city district that may support efficient energy requirements, including the requirements of the electric lighting system. Illumination values were set according to the BREEAM daylight and PN-EN 17037 Daylight of Buildings standard. The presented strategy is unconventional for Poland, but has the potential to be included in practice and should be developed further, together with electrical engineers, as a part of energy-saving solutions. Possibly, it should be followed simultaneously with the development of the compact cities ideas. It is hoped that it might be a starting point for discussion, and for a more detailed interdisciplinary research in the future.
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Kalyanam, Raghuram, and Sabine Hoffmann. "A Reinforcement Learning-Based Approach to Automate the Electrochromic Glass and to Enhance the Visual Comfort." Applied Sciences 11, no. 15 (2021): 6949. http://dx.doi.org/10.3390/app11156949.
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Daylight is important for the well-being of humans. Therefore, many office buildings use large windows and glass facades to let more daylight into office spaces. However, this increases the chance of glare in office spaces, which results in visual discomfort. Shading systems in buildings can prevent glare but are not effectively adapted to changing sky conditions and sun position, thus losing valuable daylight. Moreover, many shading systems are also aesthetically unappealing. Electrochromic (EC) glass in this regard might be a better alternative, due to its light transmission properties that can be altered when a voltage is applied. EC glass facilitates zoning and also supports control of each zone separately. This allows the right amount of daylight at any time of the day. However, an effective control strategy is still required to efficiently control EC glass. Reinforcement learning (RL) is a promising control strategy that can learn from rewards and penalties and use this feedback to adapt to user inputs. We trained a Deep Q learning (DQN) agent on a set of weather data and visual comfort data, where the agent tries to adapt to the occupant’s feedback while observing the sun position and radiation at given intervals. The trained DQN agent can avoid bright daylight and glare scenarios in 97% of the cases and increases the amount of useful daylight up to 90%, thus significantly reducing the need for artificial lighting.
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Perdana, Angga. "Comparative Study of Natural Lighting Quality in Sharia Housing Based on Daylight Factor Evaluation Using Autodesk Revit." Journal of Artificial Intelligence in Architecture 2, no. 2 (2023): 13–27. http://dx.doi.org/10.24002/jarina.v2i2.6753.
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The Islamic residential concept is the famous tagline that several real estate developers chose for their housing products today; it attracts customer attention, primarily from the Muslim community. But only some housing products are suitable to all the ideal criteria of the Islamic Residential concept. Excellent Sharia housing must fulfill all Islamic residential concept requirements, including public facilities, open space, and building quality. The strategy of the ideal Islamic housing concept requirement is optimal natural light and ventilation in the entire room. The inner courtyard is one of the solutions to afford this strategy. The types of openings also affect the daylight penetration in a room. Autodesk Revit Simulation evaluates this research about the daylight factor aspect of Islamic housing in Sharia housing. The research method is a qualitative, quantitative, and comparatively mixed method. The minimum requirement of daylight factor for housing is 5%. The study object shows that in the case of Medina Residence 1, it sufficiently offers the most daylight factor affordability in a Sharia housing project. The research hypothesis is to maximize the daylight factor by modifying several types of windows and adding skylight openings to increase the daylight factor of the entire room. Increased wall window ratio and more inner open spaces are the solutions for the minimum size of the building site. In the case of Medina residence 1, the skylight opening can be applied, but the effect is less significant than making more openings facing the open space.
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Odiyur Vathanam, Gnana Swathika, Karthikeyan Kalyanasundaram, Rajvikram Madurai Elavarasan, et al. "A Review on Effective Use of Daylight Harvesting Using Intelligent Lighting Control Systems for Sustainable Office Buildings in India." Sustainability 13, no. 9 (2021): 4973. http://dx.doi.org/10.3390/su13094973.
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Lighting is a fundamental requirement of our daily life. A lot of research and development is carried out in the field of daylight harvesting, which is the need of the hour. One of the most desirable attributes of daylight harvesting is that daylight is available universally and it is a very clean and cost-efficient form of energy. By using the various methods of daylight harvesting, it is possible to attain the global Sustainable Development Goals. Daylight harvesting in the most fundamental sense is the lighting strategy control of the artificial light in an interior space where daylight is also present so that the required illumination level is achieved. This way, a lot of energy can be saved. Recently, in addition to energy efficiency, other factors such as cost-efficiency, user requirements such as uniform illuminance, and different levels of illuminance at different points are being considered. To simulate the actual daylight contribution for an office building in urban Chennai, India before construction, ECO TECH software is used by providing the inputs such as building orientation, and reflectance’s values of the ceiling, wall, and floor to analyze the overall percentage of daylight penetration available versus the percentage prescribed in the Indian Green Building Council to obtain the credit points. Thus, the impact of architectural design on daylight harvesting and daylight predictive technology has experimented with office building in Chennai, India. This article will give an insight into the current trends in daylight harvesting technology and intends to provide a deeper understanding and spark a research interest in this widely potential field.
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Çapraz, Gürsel. "Eğitim Kurumlarının Derslik ve Kütüphane Yapılarında Sürdürülebilirlik Çerçevesinde Gün Işığından Faydalanma Metotlarının İncelenmesi." International Journal of Social Sciences 7, no. 30 (2023): 282–95. http://dx.doi.org/10.52096/usbd.7.30.19.
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In this study, which aims to examine the methods of using daylight within the framework of sustainability in the classrooms and library structures of educational institutions, the use and development of lighting systems will be discussed in order to create a sustainable and more livable environment by making maximum use of daylight. Educational institutions, classrooms (offices) and library buildings are places where people spend most of their time. For this reason, it is possible to provide maximum energy efficiency and comfort of use by increasing the daylight utilization conditions of educational institutions, classrooms (offices) and library buildings. Sunlight is the rays emanating from the sun and giving life to the entire universe. Visible light is part of the electromagnetic spectrum and wavelength that can be perceived by the human eye. In this spectrum, solar radiation is ordered according to wavelengths. For centuries, daylight was the only source of using light. The aim of creating gaps wide enough to diffuse daylight into the building dominated the architecture. Advanced daylight systems and control strategies, user-friendly and low-energy building sites are another step forward in providing daylight. These systems must be integrated into a building's overall architectural strategy and design process. Light strategies and design strategies of office buildings are inseparable. Daylight both replaces artificial light by reducing energy use and affects the heating-cooling function. The daylight project therefore involves integrating the needs and perspectives of various experts and expertise. Daylight design starts with the selection of the building location and continues until it is inhabited. Daylight strategies are designed to scatter the surrounding rays indoors in closed weather, where there is no steep sunlight. In this case, windows and skylights were applied to bring daylight into the building in closed weather conditions. Key Words: Educational Institutions, Classrooms, Libraries, Sustainability, Daylight
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Goharian, Ali, Mohammadjavad Mahdavinejad, Sana Ghazazani, et al. "Designing Adaptability Strategy to a Novel Kinetic Adaptive Façade (NKAF); Toward a Pioneering Method in Dynamic-objects Daylight Simulation (Post-Processing)." Journal of Daylighting 12, no. 1 (2025): 69–90. https://doi.org/10.15627/jd.2025.5.
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The design and evaluation of adaptive facades (AFs) have become increasingly complex due to advancements in morphology, control strategies, and adaptability techniques. This study introduces a Novel Kinetic Adaptive Facade (NKAF) incorporating photovoltaic (PV) panels and Plexiglas to enhance daylight and view performance in office buildings. The research focuses on two objectives: (1) the innovative design of the NKAF, and (2) dynamic assessment of its daylight performance using advanced simulation methodologies. Annual daylight simulations, conducted with Radiance and a cutting-edge dynamic-objects workflow, evaluated three adaptability strategies: blocking direct sunlight, tracking solar trajectories, and minimizing facade movement. Results indicate that the fully dynamic sun-blocking logic significantly improved useful daylight illuminance (UDI 100-3000 lux) from 49% to 90%. Additionally, post-processing with NSGA-II multi-objective optimization provided an optimal framework for annual performance, effectively balancing multiple design goals. This novel methodology enables the simulation of dynamic environments and facades, addressing a key gap in previous daylighting research.
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Ukpong, Edidiong, Francis Uzuegbunam, and Emmanuel Udomiaye. "Performance of combined daylighting strategies in varied sky conditions: post occupancy evaluation of lecture rooms in a tropical climate." Mehran University Research Journal of Engineering and Technology 41, no. 2 (2022): 44–63. http://dx.doi.org/10.22581/muet1982.2202.05.
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Due to the inadequate attention given to daylighting in lecture rooms in tropical wet and dry climate, this study, using field measurement, evaluates combined daylighting strategies in three lecture rooms labelled LLH, BMS and ANB with distinct bilateral glass louvre windows, window floor ratio, orientation and shading strategies. It determines the difference in illuminance in varied sky conditions, and the relationship between the strategies. Results revealed that under the clear sky condition, combined strategies in LLH and BMS rooms were effective in illuminance performance except during evening hours while the one in ANB was ineffective. Both rooms recorded poor daylight uniformity. Similar performance was obtained under overcast sky but they produced effective daylight uniformity. An effective daylighting was obtained throughout the process in the intermediate sky condition, however, the strategy in ANB room was ineffective in the evening hours. Only ANB room had an effective daylight uniformity in the intermediate sky. The strategy in LLH room had a strong positive relationship with BMS’s. The strategy in LLH had a weak positive correlation with ANB’s, but ANB’s strategy had strong positive correlation with BMS’s. Overall, the study contributes to the performance of combined daylighting strategies in tropical wet and dry climate.
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omar, Taher, Sahar Morsi Mohamed, and Mohamed Seif Al-Nasr Ahmed. "Applications of Smart Material to Enhance Daylighting as a tool to Improve Sustainability of Atriums." IOP Conference Series: Earth and Environmental Science 1113, no. 1 (2022): 012022. http://dx.doi.org/10.1088/1755-1315/1113/1/012022.
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Abstract Applications for smart building materials include making them more environmentally friendly, better able to suit user needs, and less likely to cause environmental issues. This kind of material has been suggested recently, following great scientific advancements and novel sustainable architecture techniques, as smart materials that allow controlled transmission of light and heat into the building and remove some of the traditional limitations in window application, smart material technologies are key feature competitiveness of the twenty-first century. Modern construction materials are capable of achieving great levels of utility, “Smart materials” will play a crucial role in building technology development; These materials that are part of an intelligent structural system, have the ability to sense its environment, so smart materials can function like living systems, An important element of an architectural design strategy that is environmentally sustainable is the use of daylight as part of an integrated, controlled lighting strategy. For well-designed structures, the atrium could be a significant source of daylight. It also offers other environmental advantages such as solar energy gain, reduced energy loss, and natural ventilation. The major elements of the atrium for the daylight design are a system of skylights and windows to provide daylight levels in the spaces adjacent to the atrium.
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Li, Shuyang, Danny H. W. Li, Wenqiang Chen, Ernest K. W. Tsang, Siwei Lou, and Zhenyu Wang. "Determination of Climate-Based Daylight Metrics under 15 CIE (International Commission on Illumination) Standard Skies and Three Representative Skies." Buildings 13, no. 10 (2023): 2523. http://dx.doi.org/10.3390/buildings13102523.
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Daylighting serves as a crucial sustainable strategy in assessing the built environment. Climate-based daylight metrics (CBDMs) have been widely employed to evaluate the dynamic performance of daylight. However, conventional CBDM calculations heavily rely on time-consuming full-scale computer simulations. In addition, the CBDMs need representative annual daylight data that are essential for CBDM analysis, and can pose challenges in many locations. Even when suitable daylight data are available, they may not accurately reflect current trends and conditions. This study aims to determine the various CBDMs using both the 15 CIE Standard Skies and the three representative skies specific to Hong Kong. All data were simulated from a software named RADIANCE (version 5.3). The R2s of the CBDMs under both the 15 CIE Standard Skies and the three representative skies were more than 0.89, and the MBEs and RMSEs were not more than 5.4% and 9.1%, respectively, when the outdoor illuminance measured in 2004 was employed. The findings could be adopted for other locations where the required daylight parameters were not systematically recorded.
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Gashniani, M. Gholipour, Fatemeh Mehdizadeh Saradj, and M. Faizi. "Integration Issues for Using Innovative Daylighting Strategies in Light Wells." Journal of Applied Engineering Sciences 7, no. 2 (2017): 31–38. http://dx.doi.org/10.1515/jaes-2017-0010.
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Abstract“Light well” as one of the most common means of daylight tolls in building, experiences severe limitations and deserve special attention. The question is which strategy is the best for increasing the daylight penetration to the depth of buildings. One of the main challenges in deep plan is to guide daylight into the building core and this can be performed through daylighting strategies, but the choice of the proper innovative daylighting system (IDS) with several parameters is the problem. This paper aims to find elements for optimal choice and selecting context-compatible tools for light well. The result shows that four macro factors were found at the interaction of building and IDS. Identifying the integration components can play an effective role in decision-making or design a new tolls consistent with the physical conditions of light well and building to overcome the daylight crisis.
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Besbas, Soumaya, Francesco Nocera, Noureddine Zemmouri, Mohamed Amine Khadraoui, and Asma Besbas. "Parametric-Based Multi-Objective Optimization Workflow: Daylight and Energy Performance Study of Hospital Building in Algeria." Sustainability 14, no. 19 (2022): 12652. http://dx.doi.org/10.3390/su141912652.
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Daylight is an important factor that significantly contributes to patients’ healing, with a reduction in the length of stay in the hospital. It can strongly affect energy consumption negatively or positively through lighting control strategies. Therefore, the case of healthcare buildings is very particular and sensitive, especially under extreme climate conditions as in hot and arid regions. The present study aims to determine a balance between daylight use and energy consumption through a parametric-based optimization of the external shading system in a typical hospital room in Biskra. This paper demonstrates how the implementation of parametric design with evolutionary algorithms is considered a reliable strategy to reach optimum solutions in building performance problems. The daylight performance is investigated based on multi-objective optimization to minimize the Energy Use Intensity “EUI”, while maximizing Spatial Daylight Autonomy “sDA” and Useful Daylight Illuminance “UDI”. A simulation model was developed via Grasshopper, which was employed with the use of Ladybug, Honeybee, and Octopus plug-ins. The results revealed that the adaptive facade system can improve indoor daylight levels and energy performance simultaneously compared to the conventional shading system. The presented framework may be used as a reference model, which can enhance opportunities to solve complex design problems in the early design stages and suggest recommendations for sustainable building design.
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Asriana, Nova, and Dewi Rachmaniatus Syariyah. "PENGGUNAAN SIMULASI DESKTOP RADIANCE PADA KONFIGURASI BENTUK BUKAAN." Jurnal Arsitektur ARCADE 5, no. 2 (2021): 171. http://dx.doi.org/10.31848/arcade.v5i2.629.
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Abstract: The usage of daylight in a room or building during the day is a wide strategy for illuminating the room naturally without artificial lighting services so that it can reduce the energy consumption of building. In addition, the use of daylight aims to enhance the quality of spatial visualization, vision health, environmental comfort, and increase the performance of user productivity in the room. This research will discourse about the amount of light get into room to identify how much the daylight can be useful and captured by human sight’s perception through a radiance simulation camera which will be translated into realistic images. This simulation is experimental-based that include two phases, namely the configuration of alternative openings and draws light according to the perception of user’s vision, then the set of radiance simulation based on scripting to generate the realistic images. Based on this simulation, the amount of daylight is influenced by source, quantity, position, area of openings and the building orientation or building. The amount of light intensity also affects the visual comfort of users who have activities in the room. The result of this simulation is to identify the room that generates daylight area and non-daylight area to decrease the artificial lighting.Abstrak: Pemanfaatan pencahayaan alami (daylight) pada sebuah ruangan dan bangunan di siang hari merupakan salah satu strategi desain untuk menerangi ruangan secara alami tanpa bantuan cahaya buatan sehingga dapat mengurangi konsumsi energi pada bangunan. Selain itu juga, permanfaatan pencahayaan alami (daylight) bertujuan untuk meningkatkan kualitas visual dalam ruangan, kesehatan indera penglihatan, kenyamanan lingkungan dan meningkatkan produktivitas kinerja pengguna bangunan. Pada penelitian ini akan membahas mengenai besaran cahaya yang masuk ke dalam suatu ruangan untuk melihat seberapa besar pencahayaan alami yang masuk dan ditangkap dalam suatu persepsi indera penglihatan manusia melalui kamera simulasi radiance yang diwujudkan ke dalam foto realistik. Simulasi ini dilakukan dengan metode berbasis eksperimen mandiri (experimental-based) yang terdiri dua tahap, yaitu tahapan konfigurasi bentuk bukaan dan draw light berdasarkan persepsi indera penglihatan peneliti, kemudian dilanjutkan dengan simulasi radiance berbasis scripting untuk menghasilkan foto realistik. Berdasarkan hasil simulasi ini, besarnya cahaya alami yang masuk ke dalam ruangan dipengaruhi oleh beberapa faktor, yaitu sumber bukaan, jumlah bukaan, posisi bukaan, besaran bukaan, dan orientasi ruangan atau bangunan. Besarnya intensitas cahaya yang masuk juga akan mempengaruhi kenyamanan visual bagi pengguna yang beraktivitas dalam ruangan tersebut. Hasil dari penelitian ini untuk melihat konfigurasi mana yang menghasilkan sebagian area daylight dan area non-daylight yang cukup merata untuk menghindari bantuan cahaya buatan.
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Dabe, Trupti J., and 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, no. 1 (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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Chen, Ting, and Zhiyuan Zhang. "The Non-Image-Forming Effects of Daylight: An Analysis for Design Practice Purposes." Buildings 14, no. 10 (2024): 3313. http://dx.doi.org/10.3390/buildings14103313.
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Daylight plays a crucial role in human health, and as research into its effects expands, it is essential for designers to estimate the non-image-forming impacts of various daylighting and lighting strategies. This allows them to create indoor environments that are both pleasant and comfortable. To support this, daylight measurements were taken in five Chinese cities, focusing on spectral power distribution, correlated color temperature, and illuminance. The study calculated the non-image-forming effects of daylight exposure using metrics like melanopic Equivalent Daylight Illuminance and Circadian Light. A key finding was the development of the action factor SAI, which estimates the potential non-image-forming effects of light in built environments. This factor serves as a proxy for understanding how non-image-forming effects relate to correlated color temperatures. Additionally, the research suggests the possibility of creating a time-variational daylighting and lighting strategy with four distinct periods of non-image-forming effects throughout a 24 h day. These insights could be valuable for architects and designers in optimizing indoor lighting systems.
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Finkel, Lee M. "How to avoid employment litigation: Applying the “run-to-daylight” strategy." Employment Relations Today 19, no. 4 (1992): 405–11. http://dx.doi.org/10.1002/ert.3910190406.
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Volf, C., K. Martiny, PM Petersen, D. D. Corell, and C. Dam-Hansen. "Dynamic Lighting and Natural Ventilation in Patient Rooms at New Psychiatry Bispebjerg." IOP Conference Series: Earth and Environmental Science 1099, no. 1 (2022): 012026. http://dx.doi.org/10.1088/1755-1315/1099/1/012026.
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Abstract This paper presents preliminary results of analyzes of the indoor environmental quality (IEQ) in a full scale rotatable 1:1 mockup of a patient room. As initial part of the planning of the indoor environment at a new mental hospital, the project seeks to uncover the natural differences and limitations of the building, caused by the geographical orientation. Examining the outdoor diurnal variations and their effect on the indoor environment, in order to create a balance between on the one hand, daylight and artificial lighting and on the other hand the demand for passive cooling, using natural ventilation. The analysis discuss potential health aspects of daylight and fresh air and proposes a new strategy for dynamic artificial lighting, including natural ventilation to supplement mechanical ventilation. In this article we uncover daylight conditions based on two main parameters; 1) the geographic orientation (N, S, E and W) and 2) the season (summer and winter). Based on the preliminary data and the regional daylight conditions, the article proposes a new way to plan the indoor environmental quality called Lattitude and Orientation Compensated Architectural Lighting (LOCAL).
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Khidmat, R. P., H. Fukuda, Kustiani, and A. A. Sari. "Comparison of Daylight Performance in Three Different Sky Conditions for Various Window Shading Types." IOP Conference Series: Earth and Environmental Science 1058, no. 1 (2022): 012010. http://dx.doi.org/10.1088/1755-1315/1058/1/012010.
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Abstract Building sector contributes 40% of total energy consumption. In line with this, passive design strategy should be taken as an essential consideration to bring occupants comfort both thermally and visually. Besides, related to human health, one of the factors that the designer is encouraged to fulfill is the proportional amount of daylight that penetrates the building’s room. The passive strategy to optimize the daylight performance can be approached both from the building orientation and the shading system. This paper will computationally compare the different shading systems from vertical and horizontal louver, perforated metal sheets, and expanded metal shading, aiming to investigate the desirable shading-related design solution for the given condition. The simulated room is virtually situated in three different sun positions: Birmingham, United Kingdom, Jakarta, Indonesia, and Sydney, Australia. The metrics used in this experiment are Useful Daylight Illuminance (UDI). The Rhinoceros and Grasshopper were used to model the intended simulated room, while Ladybug and Honeybee were used to undergo environmental analysis. The results show that the vertical louver LV performs better in the three regions than the rest three compared shading. The experiment results are expected to give an overview which of which is fit for the situation.
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Prameswari, Sri, and Galih Pranowo. "Synergistic Impact of External Shading and Solar Control Films on Thermal Comfort and Natural Lighting in High-Rise Office Buildings in Jakarta." Studies in Art and Architecture 4, no. 2 (2025): 11–18. https://doi.org/10.56397/saa.2025.04.02.
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In tropical megacities like Jakarta, where high-rise commercial buildings dominate the skyline, managing solar heat gain while ensuring adequate natural lighting is a persistent architectural and environmental challenge. This study explores the synergistic application of external shading systems and solar control films as a dual strategy to optimize thermal comfort and daylight performance in high-rise office buildings. By integrating passive shading elements with spectrally selective window films, buildings can reduce indoor operative temperatures, cut cooling energy demand, and improve visual comfort without sacrificing daylight autonomy. Through simulation-based modeling using EnergyPlus and Radiance on a 30-story tower in Jakarta’s Sudirman Central Business District (SCBD), the research evaluates three façade scenarios: base case, shading-only, and shading combined with solar control films. Results indicate that the combined strategy reduces annual cooling loads by up to 29%, improves thermal comfort conditions (PMV +0.4; PPD 8%), and maintains high daylight usability. Moreover, this integrated approach demonstrates favorable payback periods and aligns well with Jakarta’s green building regulations and international certification frameworks such as LEED and Greenship. The findings advocate for wider adoption of layered façade interventions as part of sustainable urban design and energy-efficiency retrofitting in Southeast Asian tropical climates.
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Margono, Seline Adella, and Mira Dewi Pangestu. "Efektivitas Daylight Mirror Shaft sebagai Sistem Pencahayaan Alami Ruang Bawah Tanah pada Langit Tropis." ATRIUM: Jurnal Arsitektur 7, no. 2 (2021): 101–15. http://dx.doi.org/10.21460/atrium.v7i2.152.
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Title: Effectiveness of Daylight Mirror Shafts as Natural Daylighting System for Basements under Tropic Sky Conditions Basements have lots of potential as functional spaces, but have mostly been neglected due to lighting issues. Therefore, this study will explore the daylight mirror shaft system as a daylight strategy for basements, which features the placement of a reflecting surface on a light shaft to redirect daylight. The system was introduced by Heliobus®, a daylighting company from Switzerland. To see the effectiveness of implementing the system in Indonesia, a study was made on its performance on the climate sky condition. Furthermore, a study was made on the effect of different opening orientations and light shaft placements toward the illuminance level achieved. The lighting data was obtained using the simulation softwares Lightstanza. Results show that the performance of the system on climate sky condition can provide sufficient light for 41% of a basement. The use of mirrors on the light shaft could also increase the lighting levels by 2.1 times compared to a shaft without a mirror. Moreover, it was found that different opening orientations and light shaft placements didn’t give a significant effect on the lighting quantity. Overall, the study shows that the system’s implementation on climate skies still require adjustments through further studies to be effective.
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Xin, Jing, Jing Wang, Yuanping Yao, Sijia Wang, Zhenxi Zhang, and Cuiping Yao. "Improved Simulated-Daylight Photodynamic Therapy and Possible Mechanism of Ag-Modified TiO2 on Melanoma." International Journal of Molecular Sciences 24, no. 8 (2023): 7061. http://dx.doi.org/10.3390/ijms24087061.
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Simulated-daylight photodynamic therapy (SD-PDT) may be an efficacious strategy for treating melanoma because it can overcome the severe stinging pain, erythema, and edema experienced during conventional PDT. However, the poor daylight response of existing common photosensitizers leads to unsatisfactory anti-tumor therapeutic effects and limits the development of daylight PDT. Hence, in this study, we utilized Ag nanoparticles to adjust the daylight response of TiO2, acquire efficient photochemical activity, and then enhance the anti-tumor therapeutic effect of SD-PDT on melanoma. The synthesized Ag-doped TiO2 showed an optimal enhanced effect compared to Ag-core TiO2. Doping Ag into TiO2 produced a new shallow acceptor impurity level in the energy band structure, which expanded optical absorption in the range of 400–800 nm, and finally improved the photodamage effect of TiO2 under SD irradiation. Plasmonic near-field distributions were enhanced due to the high refractive index of TiO2 at the Ag-TiO2 interface, and then the amount of light captured by TiO2 was increased to induce the enhanced SD-PDT effect of Ag-core TiO2. Hence, Ag could effectively improve the photochemical activity and SD-PDT effect of TiO2 through the change in the energy band structure. Generally, Ag-doped TiO2 is a promising photosensitizer agent for treating melanoma via SD-PDT.
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Fang, Yuan, Soolyeon Cho, Yanyu Wang, and Luya He. "Sensitivity Analysis and Multi-Objective Optimization of Skylight Design in the Early Design Stage." Energies 17, no. 1 (2023): 219. http://dx.doi.org/10.3390/en17010219.
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Building geometry design decisions are important for energy efficiency and daylight performance. Sensitivity analysis, coupled with optimization, is an important approach to investigate and optimize building geometry in the early design stage. Incorporating skylights is an important daylighting strategy in commercial buildings; however, skylight-to-floor ratio (SFR) is often the only design variable evaluated in precedent studies. More design variables related to skylight geometry, clerestory geometry, skylight material, and building geometry need to be evaluated. This study investigates the skylight design of a 2000-square-meter commercial building. Eighteen design variables are evaluated according to their influence on building energy and daylight performance. One-at-a-time (OAT), linear regression, and Morris sensitivity analysis approaches are utilized to identify the most influential variables. Seven of the twelve building geometry variables and two of the six building material variables are considered as important. Then, a multi-objective optimization with genetic algorithms is processed to find out the optimal design solution. The three objectives are energy use intensity (EUI), daylight autonomy (DA), and daylight uniformity (DU). After the optimization, five candidate design options are picked from the Pareto front. Discussions are made on the features of these designs, and one design is selected as the optimal solution.
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Fang, Aimin, Yi Yang, and Wenqiang Dong. "Optimal Design of Tilted Building Envelope Considering Air Conditioning Energy Demand, Daylight Utilization and Glare Protection—Case Study." Buildings 14, no. 2 (2024): 473. http://dx.doi.org/10.3390/buildings14020473.
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An important energy-saving method to optimize building envelope design is the integration of local climate characteristics. This study attempts to find sloped facade configurations to balance air conditioning energy demand and daylight utilization for four directions in an area with a hot climate. Tilt angle dependence of the air conditioning energy demand, useful daylight illuminance (UDI) and daylight glare index (DGI) are selected to investigate the acceptance thresholds of the tilt angle. The final facade’s configuration is achieved by employing the graphical optimization method. An acceptable solution that balances better daylight performance and less energy consumption by air conditioning is developed. Due to the considered city being located in a low-latitude area with great daylight availability as well as a fully dimmable light control strategy, unbearable glare reduction can be achieved by benefiting from the sloped facades, without necessarily sacrificing much usable daylight. Meanwhile, there is no obvious increase in the demand for lighting energy consumption, and a good outward view is preserved. The sloped rather than vertical facade provides natural solar shading to the east-, south- and west-oriented windows while allowing low-angle winter solar heat to warm the building space. Tilt angles between 35°and 40° are preferred for the east facade, and smaller tilt angles of between 30°and 35° are recommended for the south facade. Larger tilt angles of between 40°and 45° are preferred for the west facade. However, the north-facing facade’s outward tilt would cause an undesirable increase in air conditioning energy demand. The annual air conditioning energy demand of the east-, south- and west-facing space is found to separately decrease by 7.1%, 7.3% and 9.9%, respectively, benefiting from the sloped facades.
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Ploerer, D., S. Wasilewski, and L. O. Grobe. "Glare analysis of an integral daylighting and lighting control strategy for offices." Journal of Physics: Conference Series 2600, no. 11 (2023): 112006. http://dx.doi.org/10.1088/1742-6596/2600/11/112006.
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Abstract Complex Fenestration Systems (CFSs) can significantly impact both the visual and non-visual daylight effects on the occupants as well as the energy performance of buildings. To ensure that those impacts improve the overall situation, proper control algorithms are required if the CFS can be operated. The state of the CFS directly and immediately effects the indoor lighting situation. The thermal condition of the building is usually strongly but not directly influenced by the condition of the façade system due to thermal capacities. In this study an experimental integral control strategy, called Integrated Lighting Module (ILM) is investigated in terms of it’s glare prevention capabilities and compared to a cut-off- and a simple rule based control logic. The ILM is an autonomous software package capable to run on building management hardware to control façade systems and artificial lighting in real buildings in an energetically optimised way. The adaptive sampling algorithm raytraverse is employed to calculate Daylight Glare Probability (DGP) values, which are used as a benchmark for the control strategy comparison. The other aspect of this comparison is the opening of the façade, which is evaluated as statistics how often each possible façade state is selected by each control strategy.
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Verma, Lalit Akash, and Farheen Bano. "Methodology for Effective Daylighting in Courtyard Houses of Composite Climate." International Journal of Innovative Technology and Exploring Engineering 10, no. 5 (2021): 103–16. http://dx.doi.org/10.35940/ijitee.e8687.0310521.
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Studies have shown the relevance of the courtyard houses and passive strategy that plays a significant role in energy reduction, providing thermal comfort and visual comfort. Generally, designing the courtyards was considered suitable for thermal comfort. North India lies in the composite climatic zone, and courtyard houses in this region have a distinctly vernacular style. Many studies all around the world were conducted to analyse courtyard houses and followed different methodologies. The aim of this paper is to uncover and formulate a research methodology to analyse effective daylighting in courtyard houses of composite climate; approximately forty research papers were reviewed to find out the research methodology. The year of publication, climate zone, sky models used, weather file, building type, verifying method, simulation tools, daylight matrices, and methodology adopted were studied in the reviewed literature to formulating the methodology. The study concludes that experimental models were commonly used for daylight analysis, moreover climate-based sky can be used for detailed simulation instead of the Daylight factor with overcast sky conditions.
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Lalit, Akash Verma*, and Bano Farheen. "Methodology for Effective Daylighting in Courtyard Houses of Composite Climate." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 10, no. 5 (2021): 103–16. https://doi.org/10.35940/ijitee.E8687.0310521.
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Studies have shown the relevance of the courtyard houses and passive strategy that plays a significant role in energy reduction, providing thermal comfort and visual comfort. Generally, designing the courtyards was considered suitable for thermal comfort. North India lies in the composite climatic zone, and courtyard houses in this region have a distinctly vernacular style. Many studies all around the world were conducted to analyse courtyard houses and followed different methodologies. The aim of this paper is to uncover and formulate a research methodology to analyse effective daylighting in courtyard houses of composite climate; approximately forty research papers were reviewed to find out the research methodology. The year of publication, climate zone, sky models used, weather file, building type, verifying method, simulation tools, daylight matrices, and methodology adopted were studied in the reviewed literature to formulating the methodology. The study concludes that experimental models were commonly used for daylight analysis, moreover climate-based sky can be used for detailed simulation instead of the Daylight factor with overcast sky conditions.
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Jalal, Bareq Musaab, and Rashid Hamid Al-Rubayi. "Energy management strategy with smart building control system to reduction electrical load using ANN." Bulletin of Electrical Engineering and Informatics 11, no. 6 (2022): 3188–200. http://dx.doi.org/10.11591/eei.v11i6.4087.
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Buildings have long been large energy consumers, and inadequate control of heating, ventilation, and air conditioning kinds of variable refrigeration flow (HVAC-VRF) and lighting systems. To reduce energy consumption by using a smart building control system (SBCS) in a building was created using occupant control, daylight sensors, weather condition variations, load consumed, and changes in solar power. The model was tested using MATLAB/Simulink, and it was then utilized to investigate the impact of an integrated system on energy usage based on two scenarios. The first scenario was tested in a simulation of building occupant behavior, meteorological variables, daylight sensors, temperature, and load control. This resulted in energy savings for the HVAC system (23% on summer days and 16% on winter days), and lighting system energy savings (22% on summer days and 15% on winter days). In the second scenario, the building was tested to integrate PV system power with load consumption by using the artificial neural network (ANN) algorithm to manage building load consumption by PV, grid, and diesel generator. As a result, the energy savings were 56% on a summer day and 65% on a winter day of the combined energy utilized by the HVAC and lights.
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Bareq, Musaab Jalal, and Hamid Al-Rubayi Rashid. "Energy management strategy with smart building control system to reduction electrical load using ANN." Bulletin of Electrical Engineering and Informatics 11, no. 6 (2022): 3188~3200. https://doi.org/10.11591/eei.v11i6.4087.
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Buildings have long been large energy consumers, and inadequate control of heating, ventilation, and air conditioning kinds of variable refrigeration flow (HVAC-VRF) and lighting systems. To reduce energy consumption by using a smart building control system (SBCS) in a building was created using occupant control, daylight sensors, weather condition variations, load consumed, and changes in solar power. The model was tested using MATLAB/Simulink, and it was then utilized to investigate the impact of an integrated system on energy usage based on two scenarios. The first scenario was tested in a simulation of building occupant behavior, meteorological variables, daylight sensors, temperature, and load control. This resulted in energy savings for the HVAC system (23% on summer days and 16% on winter days), and lighting system energy savings (22% on summer days and 15% on winter days). In the second scenario, the building was tested to integrate PV system power with load consumption by using the artificial neural network (ANN) algorithm to manage building load consumption by PV, grid, and diesel generator. As a result, the energy savings were 56% on a summer day and 65% on a winter day of the combined energy utilized by the HVAC and lights.
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Gholipour Gashniani, Mostafa. "Decision making criteria for Optimal Selection of Innovative Daylighting Systems in Buildings, Using Integrated Delphi/Dematel/AHP Approach." International Journal of Multicultural and Multireligious Understanding 7, no. 7 (2020): 27. http://dx.doi.org/10.18415/ijmmu.v7i7.1632.
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Nowadays, dense cities has led towards the decrease of daylight penetration into the interior space. Daylight crisis in buildings brings significant challenges to architecture, in three domains of economic, health - wellbeing and environment. "Light well" as one of the most common means of daylight tolls in building, experiences severe limitations and requires special attention. The question is which strategy is the best for increasing the daylight penetration to the depth of buildings. One of the main challenges in deep plan is to guide daylight into the building core and this can be performed through daylighting strategies, but the choice of the proper innovative daylighting system (IDS) with several parameters is the problem. This paper aims to find elements for optimal choice and selecting context-compatible tools for light well. The result shows that four macro factors were found at the interaction of building and IDS. Identifying the integration components can play an effective role in decision-making or design a new tolls consistent with the physical conditions of light well and building to overcome the daylight crisis. The present study aimed to identify, evaluate, and weigh the factors affecting the selection of appropriate and innovative daylighting systems for buildings. To this end, a three-phase study was planned and carried out. In the first phase, the factors affecting the selection of daylighting systems for the building were screened and finalized by using the Delphi method in three steps. In the second phase, interactions between criteria and sub-criteria were evaluated by the DEMATEL technique and then the network of communications and significant relationship between them were determined. The analytic hierarchy process (AHP) was employed in the third phase to evaluate the criteria and determine their importance in the selection of daylighting systems. Finally, the relevant sub-criteria were extracted and prioritized. The results indicated that structural, economic, and technical criteria were more effective than functional criteria in the selection of daylighting systems for buildings.
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Donnelly, Orla, and James Carroll. "Daylight Considerations for Offshore Wind Operations and Maintenance." Journal of Physics: Conference Series 2875, no. 1 (2024): 012018. http://dx.doi.org/10.1088/1742-6596/2875/1/012018.
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Abstract The cost associated with operations and maintenance (O&M) for offshore wind is a cost that developers and operators are striving to reduce in order to reduce the overall Levelised Cost of Energy. Improving accessibility and increasing time based availability of wind turbines can guarantee these reductions. To increase time based availability , some wind farms utilise night shift work to reduce downtime for turbines. Previous studies revealed cost reductions using this method but are strictly based on North Sea wind farms. This paper investigates the impact daylight hours have on the O&M costs for an offshore wind farm depending on location. Using an O&M model, three maintenance strategies are simulated and their associated O&M costs are found: ‘Daylight Limited’, ‘Daylight Not Limited’ and ‘Night Shift’. Three case studies are chosen: North Sea, USA and Australia. The operational costs for the North Sea were reduced by £32.74/MWhr with the introduction of the night shift. With increased daylight, the US site saw a smaller reduction in operational costs of £3.48/MWhr using the night shift. However, the Australian site was negatively impacted when adopting a night shift strategy as operational costs increased by £3.19/MWhr. The study considers, if there are reductions in cost through night shift, is it worth the trade-of the industry makes for health and safety of technicians who work at night.
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Nikpour, Mansour, Mohd Zin Kandar, and Elahe Mosavi. "Investigating Daylight Quality Using Self-Shading Strategy in Energy Commission Building in Malaysia." Indoor and Built Environment 22, no. 5 (2012): 822–35. http://dx.doi.org/10.1177/1420326x12458512.
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Belakehal, Azeddine, Kheira Tabet Aoul, and Abdallah Farhi. "Daylight as a Design Strategy in the Ottoman Mosques of Tunisia and Algeria." International Journal of Architectural Heritage 10, no. 6 (2015): 688–703. http://dx.doi.org/10.1080/15583058.2015.1020458.
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Uckok, I. T., M. Addington, and J. Felkner. "The impact of daylight presence on cooling strategies: energy simulations of a test room in Austin, Texas, and Geneva, Switzerland." Journal of Physics: Conference Series 2042, no. 1 (2021): 012118. http://dx.doi.org/10.1088/1742-6596/2042/1/012118.
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Abstract In order to understand how to reduce energy consumption in buildings, all factors affecting occupant comfort and behavior must be considered. Previous work from EPFL has elucidated the influence of daylight on thermal perception and its resulting potential to reduce cooling loads in a controlled test space in Geneva, Switzerland with three different illumination levels (130 lux, 600 lux, and 1400 lux) and under three different indoor air temperature levels (19°C, 23°C, 27°C). Occupants perceived the temperature as up to 2°C cooler when exposed to daylight, leading to reduced cooling loads. For climates with high cooling loads for much of the year, such as Austin, Texas, this reduction could yield significant benefits for low-energy building design. Simulations show the total amount of energy saved from adopting this strategy in Austin, Texas.
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Kieu, Ngoc-Minh, Irfan Ullah, Jongbin Park, et al. "The Energy Saving Potential in an Office Building Using Louvers in Mid-Latitude Climate Conditions." Buildings 14, no. 2 (2024): 512. http://dx.doi.org/10.3390/buildings14020512.
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Daylighting has emerged as a prominent strategy for elevating indoor environments by harmonizing visual comfort and energy efficiency. This paper introduces a louver system crafted for energy simulations, specifically tailored to address lighting and cooling requirements in office spaces. Louvers, acknowledged for their exceptional efficiency in providing daylight, are integrated as a pivotal energy-saving technique. Adopting a quantitative research approach facilitated by building information simulation tools, DIALUX evo and Rhino were employed for modeling and simulating the building’s daylighting performances. The simulation outcomes reveal substantial energy savings, particularly in the realms of lighting and cooling. Notably, a 50% louver opening in office spaces results in an impressive 27.0% reduction in energy consumption. The study explores various louver configurations, providing insights into both lighting and cooling energy savings. The overall system performance excels in sustaining consistent daylight, significantly contributing to enhanced energy efficiency.
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Holland, Nancy, and Jimmie Hinze. "Daylight Savings Time Changes and Construction Accidents." Journal of Construction Engineering and Management 126, no. 5 (2000): 404–6. http://dx.doi.org/10.1061/(asce)0733-9364(2000)126:5(404).
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Megnath, Sindhya, and S. Amalan Sigmund Kaushik. "Assessing the performance of façade-integrated transparent photovoltaic panels for daylight and energy generation in high rise buildings of hot & dry climate." IOP Conference Series: Earth and Environmental Science 1210, no. 1 (2023): 012006. http://dx.doi.org/10.1088/1755-1315/1210/1/012006.
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Abstract Indian cities are witnessing a boom in the growth of high-rise buildings to accommodate the ever-intensifying population. The modern trend of applying glass on the façades of tall buildings holds a threat due to Indian climates. Though it allows the daylight, reduces the artificial lighting, and provides a good view, the heat gained through the glass façades increases a building’s energy consumption. Therefore, an innovative, advanced strategy is required that replaces the glass with alternatives which can potentially minimize the energy demands either by controlling the heat gain or producing the electricity by itself, to match the demand. Transparent photovoltaic facades can ideally solve this purpose, as it allows the daylight and are multi-functional in nature. It produces electricity and fulfils several other tasks of solar protection and glare protection. But, the presence of solar cells may cause undesirable shading or low illuminance levels; hence, it is important to comprehensively assess the daylight performance and also calculate its energy performance. The aim of the current research paper is to determine the effectiveness of integrating the transparent photovoltaic panels over window/glass façades of daytime-occupied high-rise buildings in a Hot & dry climate and the form configurations required to achieve a considerable amount of energy on-site, without affecting the quantity of daylight. In this study, the performance of the amorphous silicon (a-Si) PV window, with 26.7% visibility, was evaluated through simulation using Rhino+Honeybee software over different building sizes & aspect ratios. The results showed that there was a gradual decline in the energy intensity with increase in length and the energy intensity got increased with an increase in floor height. The form with a high aspect ratio had the highest EPI of 228kwh/m2/year. Further, the form with the least aspect ratio achieved a better daylight performance. The findings of this research are potentially valuable for building designers and decision-makers to foresee the behaviour pattern of BIPV facades in energy generation, while affirming a comfortable and luminous environment.
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Huang, Chih Hong, Wan Ting Hong, Ta Wui Cheng, Yeou Fong Li, and Hsin Hua Tsai. "A Building Envelope Coating Provides Radiative-Cooling Effect for Subtropics." Key Engineering Materials 853 (July 2020): 209–14. http://dx.doi.org/10.4028/www.scientific.net/kem.853.209.
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The primary source of heat in building envelopes in subtropical regions is solar radiation. As global warming worsens, the building insulation is receiving an increasing amount of attention.We developed a coating material with radiative cooling potential and conducted an experiment on a reduced scale to investigate the radiative-cooling performance of bare concrete and concrete coated with UU500, an inorganic insulation coating, under artificial daylight and after the daylight lamps were turned off. The results indicate that UU500 has radiative-cooling effects. We calculated the thermal transmittance coefficient Ui of the coating and presented a radiative cooling coefficient Ex to modify the U-value formula defined in ISO 9869-1: 2014. Coatings with higher Ex values should be promoted and developed to provide the materials industry with a better theoretical foundation for coating development, which enlightened a new approach for building energy saving strategy.
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Zheng, Xinyi. "Research on the Application Strategy of Light Healing Design in Desert Area Architecture." Highlights in Science, Engineering and Technology 106 (July 16, 2024): 373–82. http://dx.doi.org/10.54097/rv69v492.
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This research studies the application of light healing design in desert area architecture. Drawing on the desert's unique advantages, including ample daylight, diverse dune forms, a range of landscapes, and distinctive vegetation, and taking into account the lighting requirements of the population in the desert, research proposes two light healing design methods for the desert area: daylighting and artificial lighting. Through literature review and case analysis, the design strategy of desert light healing was formed. The aim is to provide inspiration for the location of desert architecture and the design of light healing technology and improve the physical and mental health and emotional regulation of people in desert areas.
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Valinejadshoubi, Masoud, Andreas K. Athienitis, Ashutosh Bagchi, and Matin Abtahi. "Integrated Dynamic Photovoltaic Facade for Enhanced Building Comfort and Energy Efficiency." Biomimetics 9, no. 8 (2024): 463. http://dx.doi.org/10.3390/biomimetics9080463.
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This simulation study explores the potential of a novel façade design with integrated control system comprising a dynamic photovoltaic (PV) facade integrated with dimming lighting control to enhance the work environment in office buildings and achieve energy-efficient solutions. Parametric modeling using the Grasshopper plug-in for Rhino software 7, coupled with energy simulation through the Honeybee environmental plug-in for the EnergyPlus program, are used in the methodology. The integrated control strategy was simulated to study in a single office space, utilizing the Daysim engine to assess indoor daylight quality and focusing on Daylight Factor (DF) and Daylight Glare Probability (DGP). Additionally, two artificial lighting control systems were examined for potential integration with the dynamic PV facade to minimize lighting load. The study employs the Galapagos evolutionary solver function embedded within Grasshopper to identify optimum solutions. The dynamic PV façade achieves substantial reductions in overall energy consumption, cutting it by 73% in June, 54% in July, 54.5% in August, and 52.55% in September. The results demonstrate substantial reductions in total energy consumption, with notable savings in heating and cooling due to the dynamic facade’s ability to balance and control solar radiation during working hours. Moreover, the dynamic PV facade contributes to electricity generation, demonstrating its potential to improve visual comfort, decrease energy consumption, and generate electric energy through rotational adjustments and varying transparency levels.
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Kaminska, Aniela, and Andrzej Ożadowicz. "Lighting Control Including Daylight and Energy Efficiency Improvements Analysis." Energies 11, no. 8 (2018): 2166. http://dx.doi.org/10.3390/en11082166.
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Energy used for lighting is one of the major components of total energy consumption in buildings. Nowadays, buildings have a great potential to reduce their energy consumption, but to achieve this purpose additional efforts are indispensable. In this study, the need for energy savings evaluation before the implementation of lighting control algorithms for a specified building is highlighted. Therefore, experimental tests have been carried out in a university building with laboratories and other rooms, equipped with KNX building automation system. A dimmable control strategy has been investigated, dependent on daylight illuminance. Moreover, a relationship between external and internal daylight illuminance levels has been evaluated as well. Based on the experimental results, the authors proposed a method for the rough estimation of electrical energy savings. Since, according to the EN 15232 standard, Building Automation and Control Systems (BACS) play an important role in buildings’ energy efficiency improvements, the BACS efficiency factors from this standard have been used to verify the experimental results presented in the paper. The potential to reduce energy consumption from lighting in non-residential buildings by 28% for offices and 24% for educational buildings has been confirmed, but its dependence on specific building parameters has been discussed as well.
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Gholami, Mansoureh, Majid Mofidi Shemirani, and Rima Fayaz. "A modelling methodology for a solar energy-efficient neighbourhood." Smart and Sustainable Built Environment 7, no. 1 (2018): 117–32. http://dx.doi.org/10.1108/sasbe-10-2017-0044.
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Purpose The purpose of this paper is to present a methodology to quantify the solar energy potential for applying photovoltaic systems and find an efficient geometry for urban blocks to obtain a better quality of daylighting in terms of continuous daylight autonomy (DA) and spatial DA with less energy consumption. Design/methodology/approach The paper is based on a complete simulation of the topography and micro-climate of the area under study. Simulations were performed using ArcGIS and Rhinoceros and urban daylight (UD) and urban modeling interface plugin for a neighborhood in the region of Narmak in Tehran, Iran. Five configurations of a neighborhood were compared using simulations. Findings It was found that the impact of the geometrical form on daylight gain and energy consumption is significant and the terraced model is the most suitable form for obtaining a constant floor area ratio. Furthermore, it is an optimal form of urban blocks to gain the most energy through photovoltaic systems in the neighborhood as it would be able to satisfy about 42 percent of the energy needs. Originality/value Planning to achieve sufficient energy factors in cities is a difficult task, since urban planners often do not have adequate technical knowledge to measure the contribution of solar energy in urban plans and this paper aims to introduce a comprehensive modeling methodology by which the urban energy planning can be used and understood in the urban context to make it completely clear as a strategy of implementation.
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Hosseini, Seyed Morteza, Milad Heiranipour, Julian Wang, Laura Elizabeth Hinkle, Georgios Triantafyllidis, and Shady Attia. "Enhancing Visual Comfort and Energy Efficiency in Office Lighting Using Parametric-Generative Design Approach for Interactive Kinetic Louvers." Journal of Daylighting 11, no. 1 (2024): 69–96. http://dx.doi.org/10.15627/jd.2024.5.
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The number of desk workers who frequently conduct their jobs at home has increased dramatically during Covid-19. Work-from-home flexibility makes it attractive for workers and companies, resulting in a “Work-Style Reform” after the Covid-19 pandemic. However, the quick conversion of home spaces into workplaces cannot always sufficiently respond to users’ visual comfort and daylight performance needs which are primary contributors to occupant well-being and productivity. Therefore, this study adopts a mixed-methodology method that integrates parametric thinking, biomimetic, conceptual design, kinetic strategy and the DIVA approach to develop a real-time parametric-generative circular design for multi-objective adaptability that optimizes visual comfort and electric lighting energy efficiency for multiple occupants simultaneously. Parametric simulations of 1458 different options (five different runs per case: a total of 7290) were conducted to assess how the louvers perform regarding daylight, glare, and electric energy usage. Implementing an interactive kinetic louver greatly improved daylight performance in all orientations while simultaneously avoiding visual discomfort for multiple occupants. Furthermore, the use of this façade modification resulted in a substantial decrease in electrical lighting energy consumption, reducing the values from 14.22 to 0.2 kWh/m2/year, 8.1 to 0.18 kWh/m2/year, and 12.88 to 0.18 kWh/m2/year for South, East, and West orientations, respectively. Integrating users' lighting level preferences and the dynamic transitory sensitive area on the façade considerably reduces electric lighting consumption by around 99% compared to the ASHRAE 90.1 standard's lighting profile.
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Kania, Nada Elfira Dwi, Agustinus Nur Arief Hapsoro, Irwan Sudarisman, and Riksa Belasunda. "Bus stop design strategy based on visual comfort level in Bandung City." ARTEKS : Jurnal Teknik Arsitektur 9, no. 2 (2024): 177–90. http://dx.doi.org/10.30822/arteks.v9i2.3187.
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High sunlight and poor air quality in the city of Bandung affect the level of visual comfort. In designing bus stops, space is needed that has visual comfort so that the facilities are maintained and can function well. This research was conducted to determine visual comfort as measured using the Daylight Factor (DF) at bus stops in Bandung. The method used is a quantitative experiment using Drajmarsh and Ladybug software. To identify a bus stop design with stable visual comfort, analysis was conducted at various times and places. The results of the study are guidelines for creating publicly accessible spaces, such as bus stops, in Bandung that make utilization of natural light from the sun from morning to night. This light is crucial for visual information, thermal comfort, and building energy efficiency.
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Kania, Nada Elfira Dwi, Agustinus Nur Arief Hapsoro, Irwan Sudarisman, and Riksa Belasunda. "Bus stop design strategy based on visual comfort level in Bandung City." ARTEKS : Jurnal Teknik Arsitektur 9, no. 2 (2024): 177–90. http://dx.doi.org/10.30822/arteks.v9i3.3187.
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High sunlight and poor air quality in the city of Bandung affect the level of visual comfort. In designing bus stops, space is needed that has visual comfort so that the facilities are maintained and can function well. This research was conducted to determine visual comfort as measured using the Daylight Factor (DF) at bus stops in Bandung. The method used is a quantitative experiment using Drajmarsh and Ladybug software. To identify a bus stop design with stable visual comfort, analysis was conducted at various times and places. The results of the study are guidelines for creating publicly accessible spaces, such as bus stops, in Bandung that make utilization of natural light from the sun from morning to night. This light is crucial for visual information, thermal comfort, and building energy efficiency.
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Zhao, Wang. "Study on Office Building Window Design Strategy in Severe Cold Region Based on Daylight Comfort." Science Discovery 5, no. 7 (2017): 572. http://dx.doi.org/10.11648/j.sd.20170507.27.
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Schiebold, Julienne M. I., Martin I. Bidartondo, Florian Lenhard, Andreas Makiola, and Gerhard Gebauer. "Exploiting mycorrhizas in broad daylight: Partial mycoheterotrophy is a common nutritional strategy in meadow orchids." Journal of Ecology 106, no. 1 (2017): 168–78. http://dx.doi.org/10.1111/1365-2745.12831.
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Syed Husin, Sharifah Nor Fairuz, and Zarina Yasmin Hanur Harith. "The Performance of Daylight through Various Windows for Residential Buildings." Asian Journal of Environment-Behaviour Studies 3, no. 6 (2018): 169–78. http://dx.doi.org/10.21834/aje-bs.v3i6.247.
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 A good daylighting strategy is necessary in order to decrease energy consumption for artificial lighting. To provide effective internal illumination, the placing of the right openings in the right positions with suitable type of window and glazing is important. This study focused on the various types and materials of the glass and window, in order to identify the quantity and quality of daylight that penetrates into the residential buildings. Based on a series of measurement, it was identified that type of glazing and window gives major significance on the performance of daylight and thermal performance in residential buildings.
 Keywords windows; illumination level; residential building; occupant’s perception.
 eISSN 2514-751X © 2018. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open-access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.