Optimization of dilution ventilation layout design in confined environments using Computational Fluid Dynamics (CFD) |
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| Institution: | 1. School of Building Services Science and Engineering, Xi''an University of Architecture and Technology, Xi''an, 710055, China;2. Department of Applied Physics and Electronics, Umeå University, SE-901 87 Umeå, Sweden;3. International Centre for Indoor Environment and Energy, Department of Civil Engineering, Technical University of Denmark, 2800 Kgs, Denmark;4. Ventilation and Air Quality Centre for Built Environment, University of Gävle, SE-801 76 Gävle, Sweden;5. Department of Civil Engineering, Aalborg University, Aalborg DK-9220, Denmark;6. Center for the Built Environment, University of California, Berkeley, CA 94720, USA;7. Department of Energy and Process, Norwegian University of Science and Technology, KolbjørnHejesVei 1B, NO-7491 Trondheim, Norway;8. School of Construction Management and Engineering, University of Reading, UK;9. School of Architecture, Design and Planning, The University of Sydney, Australia;10. Department of Building, School of Design and Environment, National University of Singapore, 117566, Singapore;11. Department of Mechanical Engineering, School of Engineering, Aalto University, Sähkömiehentie 4, 02150 Espoo, Finland;12. College of Urban Construction, Nanjing Tech University, Nanjing 210009, China;13. Institute of Industrial Science, The University of Tokyo, Tokyo, 153-8505, Japan;14. Department of Building Science, School of Architecture, Tsinghua University, Beijing, 100084, China;15. Division of Building Science and Technology, City University of Hong Kong, Hong Kong, China;1. Key Laboratory of Hydraulic Machinery Transients, Ministry of Education Wuhan University, Wuhan, Hubei, China;2. Hubei Key Laboratory of Waterjet Theory and New Technology, Wuhan University, Wuhan, Hubei, China;3. School of Power and Mechanical Engineering, Wuhan University, Luo-Jia-Shan, 430072 Wuhan, Hubei, China;4. College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong, China;5. School of Civil Engineering, University of South China, Hengyang, Hunan Province, China |
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| Abstract: | Dilution ventilation systems have been widely used to control the airborne toxic and explosive material in confined spaces. Layout design of dilution ventilation is critical to industrial hygiene control and ventilation efficiency. A properly designed dilution ventilation system can significantly improve the safety of confined workshops and maintain a comfortable work condition. In this work, Computational Fluid Dynamics (CFD) has been used to analyze the performance of dilution ventilation system in the confined workshop environment. Seven different ventilation layouts are proposed to evaluate ventilation performance of different installation layouts. Carbon monoxide (CO), which has the similar density as air, is selected as the sample contaminant to conduct steady-state CFD simulations. The simulation results of different layouts are examined and compared to get the optimal layout design for the best contaminant control. Results have shown that the layout with two opposite inlets has the highest ventilation efficiency among seven proposed layouts. This work can serve as a reference to increase dilution ventilation efficiency and minimize the energy cost in general confined areas. |
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| Keywords: | Dilution ventilation Computational fluid dynamics (CFD) Airflow Layout design Confined environment |
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