There is a growing demand for the construction of high-rise buildings in modern metropolises which calls for accurate and all-encompassing studies to ensure the safety of the residents. The present study examined the role of smoke shafts in the performance of emergency More
There is a growing demand for the construction of high-rise buildings in modern metropolises which calls for accurate and all-encompassing studies to ensure the safety of the residents. The present study examined the role of smoke shafts in the performance of emergency evacuation in high-rise buildings. The aim of the study was to find the optimal location of smoke shafts as well as other refuge areas and components of emergency evacuation in the core structure of high-rise buildings. This study sought to answer the question whether there is a link between the location and number of smoke shafts and the number of people evacuated. The movement of the occupants was simulated using Steering and SFPE simulators. The Fire Dynamic Simulator (FDS) was used for fire and smoke dispersion. The number and location of smoke shafts were considered as the independent variable and the evacuation time as the dependent variable. The findings indicated that including two smoke shafts in connection with the refuge area in the core of high-rise building can accelerate evacuation by up to 40% in case of fire.
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Deciding the roof type with a large ventilation spans for uses in the flower and plant exhibitions that can operate beyond the exhibition space functions as it can provide a desirable climate for the growth of its plants, it can be designed and enhanced according to the More
Deciding the roof type with a large ventilation spans for uses in the flower and plant exhibitions that can operate beyond the exhibition space functions as it can provide a desirable climate for the growth of its plants, it can be designed and enhanced according to the geographical site of it. Deciding and designing the roof form can prevent dissipations in energy and assets and develops a construction with high efficiency together with low costs of maintenance, only if it is done in an intelligent way. The independent variables in this research are the climate conditions, and form of the structure is considered as the intervening variables together with factors like the internal air current and sub climates and the levels of thermal comfort for individual occupants as the dependent variables. The aim of conducting this master thesis which is considered as an interdisciplinary research, is to reach for proper patterns in covering the ventilators in greenhouses with large spans by using the climate information of the north-Iran region. The main question of this research is the most efficient roof form in regard to natural ventilation in mild and humid climate condition? Research method the study is modeling and computer simulation in a way that they are evaluated with the prevalent forms of exhibitions and greenhouses with large vents in the terms of the external wind flow impacts and natural ventilation in their interior and analyzed by employing Computational Fluid Dynamics (CFD) and moving particle semi-implicit (MPS) simulation. Results indicate that form of a building has an obvious impact on the internal airflow and the curved forms have a better impact on the internal circulation of air. As an instance, in the convex geometries, the airflow speed rate drops in the center of the construction while in the concave geometries it is quite the opposite as the speed is reduced around the sidewalls of the construction and the thermal comfort becomes a different point along with natural ventilation.
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