Document Type : Research Paper
Authors
1 Department of Architecture, Advancement in Architecture and Urban Planning Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
2 Assistant Professor, Dean of School of Architecture and Environmental Design, Iran University of Science & Technology, Tehran, Iran.
3 Assistant professor, Department of Construction, Faculty of architecture and urban planning, Shahid Beheshti University, Tehran, Iran
Abstract
Daylight has significant effects on the visual comfort, well-being and productivity of users, and at the same time offers significant benefits for reducing energy consumption. On the other hand, the entry of too much daylight into the space increases the annoying glare and creates excessive heat of the building for the user. Therefore, considering the importance of the quantity and quality of natural lighting in the space, it is necessary to design and use daylight systems next to the openings. The present study evaluates the performance of daylight and energy in an architectural design studio located in Isfahan city, by using the light shelf system along with some variables of the glazing, a place where the importance of daylight to improve the visual comfort of the space from the users' point of view is twofold. The method of this research includes: identifying the variables of the light shelf and glazing, modeling (simulation modeling for daylight and energy), implementing the simulation process, determining the effect of the variables on the target functions (receiving appropriate daylight and reducing consumption) using sensitivity analysis, implementing the optimization process and extracting optimal models. Like the results of most researches in this field, the presence of a light shelf next to the window had a significant effect on improving visual comfort and energy efficiency. By comparing the simulation results of the basic model and some of the optimal responses, it can be seen that the use of light shelf in Isfahan city and the southeast front leads to an improvement in sUDI by 36.10, 37.50, 38.90, 37.50 percent and a reduction in energy consumption and reducing energy consumption (EUI) by 21.60, 25.0, 22.60, 23.50 percent. This is while this amount of light entering not only does not increase the amount of annoying glare in the interior, but also improves the glare by 75, 72.50 percent.
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