Adele Abdi; Ozeair Abessi; Ehsan Khavasi
Abstract
Background and Purpose: More than 90% of people’s lives are spent indoorsand indoor air pollution is the cause of more than 2.2 million deaths annuallyworldwide. Contrary to popular belief, the dangers of pollutants in enclosedspaces are greater than in open environments. In this study, the ability ...
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Background and Purpose: More than 90% of people’s lives are spent indoorsand indoor air pollution is the cause of more than 2.2 million deaths annuallyworldwide. Contrary to popular belief, the dangers of pollutants in enclosedspaces are greater than in open environments. In this study, the ability ofthe computer models to simulate flow behavior in the interior space of anindustrial workshop was investigated to may check the satisfaction of theenvironmental standardsMaterials and Methods: The flow pattern and flow mixing and dilution wereinvestigated by developing a specific solver in Open FOAM and comparing theresults with the experimental data.Results: Due to the initial buoyancy, the plume enters from the lower openingwith high concentration and after diluting in indoor space, goes out fromthe roof opening. It is then observed that while there are no openings, theconcentration of Carbon Monoxide in the breathing height of workers willreach the dangerous limit of (100 ppm <) in different models.Conclusion: In this study, the concentration of Carbon Monoxide in thebuilding’s interior space was estimated far higher than the maximum allowablecentration mentioned in the standards. Therefore, the high level of pollutionconcentration in indoor spaces indicates the inadequacy of natural ventilationand the need for mechanical ventilation to could decrease pollution down tothe breathing standard of ocupants.