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Numerical Study of a Combined Pollutant Concentration Dispersion and Convective Heat Transfer in a Two-dimensional Factory Model

Received: 29 March 2019 Accepted: 20 June 2019 Air pollution adversely influences health of human, especially the indoor air pollution being poor ventilation. This article studied the carbon dioxide concentration dispersion and convective heat transfer in the two-dimensional factory model affected by different convective heat transfers and pollutant concentration levels. The continuity equation, momentum equations, heat transfer equation, and species concentration equation for an unsteady state are numerically solved based on the finite element method. The simulation results are found that the inlet air velocity is the main factor affecting the pollutant concentration dispersions. The effect of the air temperature on pollutant dispersion is greater at higher temperature difference between the inlet air temperature and the initial temperature. The average pollutant concentration ratios in the factory are similar. Although, the average pollutant concentrations in the factory increases with the pollutant concentration levels. The obtained results can apply in the prediction of pollutant concentration dispersion and ventilation system management.