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CODYRUN is a multi-zone software integrating thermal building simulation, airflow, and pollutant transfer. Described in numerous publications, this softwarewas originally used forthe passive designof buildings, both for research and teaching purposes.In this context, the datatreatedwere mainly concerned with volumes (zones), surfaces andthicknesses (walls andwindows), materials, and systems, with the aim to determine temperatures,heat fluxes,energy consumed, air transfers, and so on. The questionthus arose as tothe integration ofindoor lighting conditions into the simulation. Hence, previousdata structureshad to beamended to incorporatethe spatial positioning ofentities (walls, windows, and artificial lighting sources) throughvertexes. A set ofprocedureswasalso developed for polygons as well as calculatingnatural and artificial lighting. The results ofthis new daylighting modulewere thencompared with otherresultsof simulation codes and experimentalcases both in artificialand naturalenvironments. Excellent agreements were obtained, such as the values for luminous efficiencies ina tropical and humid climate. A simulation exercise was conducted in a classroom located in Reunion Island (French overseas territory in the Indian Ocean), thus confirming the interest for thermal and daylighting designsin lowenergy buildings.
Renewable Energy
Computer-oriented building design: Advances in daylighting and thermal simulation tools1998 •
PLEA 2008
Daylight simulation in buildings2008 •
Emphasis on daylight is given to non-domestic buildings because in such buildings the specificity of the activities or the high levels of illumination demand a more careful control on daylighting examined for design purposes. Clearly energy saving in that situation is one of the reasons for that emphasis. This paper deals with light coming into the rooms through the window providing natural light once the window is considered the only system that provides and controls light flux and distribution. Rooms can be classified according to their occupancy and use, and then many different activities requiring different illumination levels can be developed in the same space. Room's classification is the first step to establish the ratio window to the floor area for daylight purposes. Therefore the aim of the present work is to investigate window’s characteristics as a mean to assess daylighting. Windows’ parameters were taken up to calculate daylighting for 12.00m² rooms. The simulated cases were accessed varying windows position, shape, size and geometry, maintaining in all cases 3.60m² area. This methodology can be applied in architectural education aiming students’ comprehension about users’ comfort and energy savings. ECOTECT and Radiance softwares were used to simulate the proposed windows’ parameters.
Energy and Buildings
Thermo – lighting optimization proposal for school buildings in subtropical hot – humid climates: Monitoring and computer simulation on autumn period2016 •
eCAADe proceedings
Use of Simulation Techniques and Optimization Tools for Daylight, Energy and Thermal Performance - The case of office module(s) in different climates2021 •
HBRC Journal
Using simulation tools for optimizing cooling loads and daylighting levels in Egyptian campus buildings2016 •
Newly designed buildings should be optimized with respect to sufficient indoor illuminance and solar protection against glare effect and indoor overheating. The optimized building design must be based on solutions of many design alternatives and case studies, as well as necessary assessments should be carried out in order to find optimum solutions which can be completed via the help of computer simulation programmes. Some of the simulation programmes could be helpful for modelling of indoor daylighting in rooms and spaces with various types of daylight systems and their positioning in buildings. The paper focuses on a series of computer daylight simulations completed for the selected room with four different types of window openings specified for optimizing the building design for daylighting.
Development of a Daylight Simulation Software for Early Design Stage: A Case Study of a Container House
Development of a Daylight Simulation Software for Early Design Stage: A Case Study of a Container House", Periodica Polytechnica Architecture, https:// Development of a Daylight Simulation Software for Early Design Stage: A Case Study of a Container House2021 •
Daylight simulation software play a significant role in decision-making during the architectural design process. These software enable architects to make informed decisions about daylight performance in the early phases of the project. Radiance as a simulation engine provides a physically accurate model of the lighting conditions in the scene, thus capable of achieving a high degree of accuracy and validity. However, with a command line interface, it requires a large number of input parameters, which complicates modelling and restricts flexibility. When integrated in the early design process, this approach becomes less efficient, or requires enormous computation time. This paper introduces a daylight simulation software named DaylightX that uses the backward raytracing algorithm implemented on the GPU to calculate the spatial distribution of daylight across the space. The tool aims to enhance the capabilities of the simulation environments through a user-friendly interface and thus allow for flexibility in the design process. An individual residential unit-a shipping container-was used as a base case for evaluation. The modular design of shipping containers allows for flexibility in window placement and orientation, but requires careful design and implementation from daylight performance perspective. The results of the study can serve to improve the daylight performance of container housing units. Keywords daylight analysis, sustainable design, software development, computational design
Lightweight buildings offer rapid and low cost construction that can have low embodied energy and CO2 compared to heavy weight concrete and masonry alternatives. In warm and hot climates lightweight buildings can often create poor internal environmental conditions that are frequently too warm. This paper uses the NSW demountable classroom to explore the use of whole building shading strategies, also known as secondary or fly-roofs, to improve the environmental performance of lightweight classroom buildings in a variety of warm climates across New South Wales, Australia. NSW contains a diverse range of climates ranging from mild temperate to hot dry desert and a warm subtropical climate on the north coast. The NSW demountable classroom is a radical building system that was designed in 1965 to provide the government with a lightweight and rapidly deployable classroom system that is expected to perform in all NSW climates. A computer simulation model of the classroom is used to explore how an external shading strategy and the reflectivity (emittance) of the materials used to provide the shading can improve the thermal performance of this lightweight building in free running and air-conditioned modes. The paper concludes that the fly roof makes a significant difference in all of the three climates simulated and that changing the emittance of the fly roof has little or no effect.
Kiil, M., Simson, R., De Luca, F., Thalfeldt, M., Kurnitski, J., 1st Nordic conference on Zero Emission and Plus Energy Buildings, IOP Conf. Series: Earth and Environmental Science, 352, pp. 1-7
Overheating and Daylighting Evaluation for Free-running Classroom Designs2019 •
Learning performance is strongly related to thermal comfort and lighting conditions of classrooms. Poor facade design can result in high indoor temperatures or insufficient access to natural light. To maintain the required temperatures and illuminance levels in such rooms may require intensive use of artificial lighting and active cooling systems, which are energy-intensive, costly to install, operate and maintain. The purpose of this study was to determine essential parameters and facade design options that ensure overheating prevention and fulfil daylight requirements in classrooms without mechanical cooling. The present study is based on simulations of a parametric room model with variable dimensions and orientations. Facade glazing solutions with optimal combination of solar factor and visible light transmittance were used to minimize overheating risk and maximize natural lighting impact. For east, south and west oriented facades, the effect of horizontal shading was also analysed. Overheating assessment through indoor temperature simulations was conducted with dynamic simulation software IDA ICE, daylighting was simulated with DIVA4 coupled with Grasshopper software. Results show that classrooms without mechanical cooling require in depth analysis to determine satisfying solutions for both overheating and daylighting criteria. The results of this paper can be used for early stage facade design guide for school buildings or similar use free-running buildings.
2015 •
Designing buildings with the lowest possible cost base is an essentiality in sustainable architecture. Previously, due to the computational complexity of building's energy consumption, the environmental impact on thermal and lighting energy consumptions haven't been considered simultaneously. As nonlinear relationships are often disclosed, a comprehensive approach is necessary to reduce the total energy need of a building and optimize the facade configuration at the same time. Solar radiation affects thermal and lighting energy consumption which depends on building fabric’s characteristics. In this paper a parametric method to optimize the window size and sunshade dimensions of an educational building in mild climate of Iran is presented. Through integrating thermal and lighting energy consumption, 6750 window and sunshade configurations are studied and compared. First, climatic parameters and thermal analysis are validated by on-site measurements. Then, the characteristics ...
2024 •
2024 •
Tạp chí Nghiên cứu Y học
Đặc điểm lâm sàng rối loạn phổ tự kỷ từ 24 - 72 tháng tại Thành phố Cần Thơ2022 •
2017 •
2010 •
RInCE: Revista de Investigaciones del Departamento de Ciencias Económicas
Programa de Publicaciones periódicas científicas. Secretaría de Ciencia y Tecnología de la UNLaM. Revista RInCE. Departamento de Ciencias Económicas de la UNLaM2015 •