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2016 | 57 Special Volume |

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Personal ventilation modeling using a CFD analysis

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The growing trend for energy savingshas resulted in tightening the building envelope, so the risk of contaminant accumulation and cross contamination is growing. Often, traditional mechanical ventilation systems that are installed in airtight buildings are not efficient in providing the proper amount of fresh air for individuals and do not protect them from cross contamination. Personal ventilation is an alternative to traditional ventilation systems as it provides fresh and purified air directly to the breathing zone. Not only does this method, in many cases, improvethe thermal comfort of occupants, but also protects them from crosscontamination from other occupants. In this study an air terminal device was tested to see if it would protect the occupant from cross contamination under changing conditions of the flow rate. Different velocities were simulated using the AnsysFluent CFD program, thanks to which the velocity around the occupants face was shown.The chosen velocities were 15 L/s, 10 L/s, 5L/s and 1L/s.The results showed that when the air flow was low, the personal ventilation system may not be effective in protecting against cross contamination

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  • Institute of Thermal Engineering and Air Protection, Krakow University of Technology, 24 Warszawska St., 31-155 Krakow, Poland


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1st INTERNATIONAL SCIENTIFIC CONFERENCE, dilemmas of scientific research in various fields of science: natural sciences, science and technology, economic and social sciences, humanistic sciences, 10th October, 2016, Cracow, Poland

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