where con is the nasal concentratio

where con is the nasal concentration of the contaminant of interest in the conventional cabin when the local suction is turned off and con is nasal concentration with the particular suction turned on note this formulation is only valid because the flow rate of contaminant into the cabin i.e source strength of the armpits is fixed for all experiments conducted and assumes a fixed pulmonary ventilation rate for all passengers in all scenarios it is useful to first explain the manner in which fig ุ 6 displaying the experimental results for each seated passenger location window aisle and center passenger there are 2 bar of data each bar represents the reduction in exposure to the individual contaminant window aisle and center source that passenger witnesses when suction is implemented note that there is only data for cross contaminants that is no results are given for the exposure of a passenger to his own contaminants only to those contaminants released from the neighboring passenger. with this in mind the fifty percent seat back suction is found to reduce passenger exposure to cross contamination by roughly 30-55 depending on the source/receptor combination of interest the exposure reduction of the window and aisle-seated passengers to the center source contamination is highest at 50 because the cabin flow field minimally influences the center passengers thermal plume allowing it to be most readily ingested by the center