The aim of this study is to design industrial ventilation in the production hall. With respect to the many parameters which influence the appropriate proposal of industrial ventilation that need to be considered, there is a good chance for miscalculations when design the industrial ventilation. Especially when the heat loads from technology threaten the stability of construction of the building. There are two different ways of solution of aeration in the aluminium plant. There is only a natural ventilation using outside air in case of melting of aluminium and an adiabatic cooling for air inlet combined with natural ventilation. The results and practice has shown, that to use only an outside air is not sufficient and the temperature in the hall is really very high. Adiabatic cooling decreases the air inlet temperature in the production hall and improves the working conditions. A thermovision mapping of the technology was used prior to start the CFD modelling. The simulation emphasize the important effect of design and location of different elements on the functionality of ventilation proposal.
The aim of this study is to design a fire ventilation system with impulse jet fans for an underground car park. During the planning, it is necessary to consider all aspects of fluid behaviour however, there is a number of parameters that can affect the flow of smoke that need to be considered. There is a good chance of miscalculations when computing the overall fluid flow using conventional plain calculations. To avoid mistakes, visualize the fluid flow and also to directly compare the different design variants it can be practical to use computer software, specifically CFD (Computational Fluid Dynamics) simulations. By CFD it is possible to better analyse and keep control of the flow of fluid, heat transfer and other related phenomena. It also helps predict the contamination level of Carbon Monoxide, heat and smoke intensity and distribution. In this study CFD simulations were used to design, test and compare two alternatives of fire ventilation system. The two alternatives differed from each other in the location of the impulse jet fans and exhaust ventilation shafts, and in the ventilation intensity (10-times per hour in the first alternative and 15-times per hour in the second alternative). The results have shown that the first alternative is not suitable as the car park was not sufficiently ventilated after 1500 seconds after the simulation had begun, whereas in the second alternative the smoke was almost completely exhausted and the visibility was significantly improved. The simulation results emphasize the important effect of design and location of the different elements on the functionality and efficiency of a fire protection system.
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