The effect of the change in air inflow velocity has been investigated at the opening of the malodor emission source to determine its influence on the Complex odor concentration. Both the Complex odor collection efficiency and concentrations were measured according to the change in airflow velocity. When the air inflow velocity was 0.1 m/s, it was observed that some of the generated gas streams were diffused to the outside due to low collection efficiency. In contrast, only the increased gas collection volume up to 0.5 m/s showed no substantial reduction of the Complex odor concentration, which indicates an increase in the size of the local exhaust system as well as the operation cost for the Complex odor control device. When the air inflow velocity reached 0.3 m/s, the Complex odor concentrations not only were the lowest, but the odorous gas could also be collected efficiently. The air inflow velocity at the opening of the malodor emission source was considered the key factor in determining the gas collection volume. Therefore, based on the results of this study, an optimal air inflow velocity might be suggestive to be 0.3 m/s.

Abstract
1. 서 론
2. 연구방법
    2.1 연구시설
    2.2 연구방법
3. 연구결과
    3.1 악취발생원 개구부에서 기류속도별 악취포집풍량의 상관관계
    3.2 기류속도에 따른 악취물질의 농도변화
    3.3 악취발생원의 개구부 기류속도와 복합악취의 상관관계 분석
4. 결 론
References

• 이경호(서울시립대학교 환경공학부) | Kyung-Ho Yi (Environmental Engineering, University of Seoul)
• 오제범(한국환경공단 수도권서부지역본부) | Je-Beom Oh (Korea Environment Corporation Department of Environment Management HQ Western Metropolitan Area)
• 동종인(서울시립대학교 환경공학부) | Jong-in Dong (Environmental Engineering, University of Seoul) Corresponding author