Actual Situation of Ventilation Design And Evaluation using Contamination Area Ratio of Smoking Rooms

Contamination distributions were calculated and evaluated by contamination area ratio at respiration height for actual smoking rooms. As a result, 1) Dust contamination area ratio is about 20 % for required ventilation volume by Guidelines. 2) Ventilation volume based on smell level 1 is almost as much as that based on dust criterion. 3) Contamination area ratio of smell level is more rapidly reduced than that of dust as ventilation volume is increased. 4) A desirable clean air condition is producible by increasing ventilation volume on the basis of smell level 1, but strong air current is locally created.