2017 Volume 48 Issue 2 Pages 140-147
The method with self-suction is suggested in the triangle odor bag method which is official method in offensive odor control law. This method has some concerns in terms of accuracy. One of them is the decrease of suction-odor concentration because of leakage from clearance between mask and face of a subject. Therefore, it was compared suction flow rate by using CFD among three width patterns of clearance and three suction patterns based on the measurement. Consequently, it was revealed that the decrease of odor concentration suctioned from odor bag was depended on both the volume of breath, and width of clearance between mask and face. For example, maximum suctioned odor concentration was 67 percent.
