Point source Ventilation Effectiveness of mixing ventilation solutions used in non-residential Settings

This study combines multiple case study results, both laboratory and field measurements. Common non-residential rooms, such as classroom, dressing room, fitness, gym, restaurant, bar, meeting room and open office were examined. To assess ventilation effectiveness, CO2 tracer gas method was used. The results showed that a significant amount of rooms did not achieve the mixed ventilation conditions. In addition, higher ventilation air flow rates, the amount and distance of the ventilation extraction points did not always guarantee better performance. In terms of infection risk-based ventilation design, these ventilation effectiveness values can be used for the adjustment of the ventilation air flow rate according to the actual ventilation solution in the room.