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- W2607257149 abstract "The present study aims to investigate the characteristics of airflow inside the room through 5-blade square louver face ceiling diffuser using CFD. Several diffuser models are installed inside 3D room model by changing blade angles (60°, 65° and 45°) and lip angles (0°, 5°, 10° and 15°). Besides, the model with 60° blade angle and 0° lip angle is installed inside different room models with various return air inlet positions. The realizable k–ε turbulence model is used in simulation process. The results indicated that the diffuser model with 65° blade angle provide jet and terminal air velocities beside airflow patterns cling with ceiling higher than the models 60° and 45°. Therefore, it is suitable to install in the space with larger size and relatively higher noise level to reaches to the comfort criteria faster than the other models to reduce the energy consumption. On the other hand the model with 45° blade angle is applicable to installed in the spaces with larger height due to airflow patterns out in cone shape. In addition, increasing lip angle to 15° leads to relatively reduce the cling of airflow patterns with room ceiling, and reach to comfort conditions with less energy consumption faster than 0° lip angle. Moreover, the room geometry model with two return air inlets on the ceiling with adequate size is produced ideal design of a fully mixed air distribution system with relatively constant temperature gradient." @default.
- W2607257149 created "2017-04-28" @default.
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- W2607257149 date "2017-05-01" @default.
- W2607257149 modified "2023-10-16" @default.
- W2607257149 title "Optimal design of a louver face ceiling diffuser using CFD to improve occupant's thermal comfort" @default.
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- W2607257149 doi "https://doi.org/10.1016/j.jobe.2017.04.009" @default.
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