Effects of air supply and exhaust positions on odor diffusion behavior

―Examination based on the exhaust position of the 1 m3 chamber

Abstract

In this study, the diffusion behavior of odor substances was measured by semiconductor gas sensors using a 1 m3 chamber. An air supply port was provided at the lower part of the chamber, and the exhaust port was changed to four places. We investigated the diffusion behavior of odor substances due to the difference in the position of the exhaust port. In addition, a comparative study was conducted with the case where the air supply port was provided at the upper part of the chamber. The citrus fragrance D-Limonene was used as the odorant. Under the condition that the air supply port was installed at the bottom of the chamber, the concentration of odors substances in the chamber was the lowest when the exhaust port was installed at the bottom of the chamber. Compared with the condition where the air supply port was installed in the upper part of the chamber, the concentration inside the chamber was lower when the air supply port was installed in the lower part of the chamber