Performance evaluation of air cleaning equipment in terms of ETS and odor removal (Part 2) : Case study of compact smoking booth set in quasi-office

概要

論文の詳細を見る
We evaluated air quality of a quasi-office (194.4 m3) in which a smoking booth (24.3 m3) was installed with developed ETS removal equipment (Developed Equipment). The ventilation rate of the office was set 1440 m3 h-1 and the tobacco smoke continuously emitted from 8 cigarettes was processed by the developed equipment with circulation air flow at 1200 m3 h-1 to be exhausted into the office. Increase in the concentrations of tobacco smoke ingredients in the office room was prevented by operating the developed equipment even when 8 cigarettes were burned. Concentrations of carbon monoxide (CO), which was included in tobacco smoke but not be removed by the developed equipment, were increased. However, the concentrations were in range of 0 to 2.7 ppm, which are below the indoor standard value at 10 ppm. This is due to the high ventilation rate. The moisture content, which was emitted by the developed equipment were decreased by the ventilation system. Observed distribution of concentrations of the ingredients of ETS in the office room was not affected by the position of the ventilation exhaust, back of the office room or above developed equipment's outlet. Thus, if we can set the ventilation rate high enough for the volume of the office room, the office air quality can be kept clean. Observed concentrations were well agreed with the CFD simulation results. We can estimate the performance of the smoking booth before actual installation.