Simulation Study on Exhaust Effect of Common Exhaust Equipment in Traditional Electrical Manufacturing Enterprises

Abstract

Based on fully understanding of the setting and operation of local exhaust facilities in traditional electrical manufacturing industry, the software FLUENT is applied to simulate the airflow field of universal arm exhaust hood in the process of removing welding dust. And the exhaust effect of typical welding dust universal arm exhaust hood and its influencing factors were analyzed. The results show that the exhaust effect of welding fume is mainly affected by the exhaust wind speed, the size of the hood, the angle between the hood and airflow, the distance from the pollutant source to the center of the hood, etc. When practical operation is feasible, the best combination of exhaust effect and economy is achieved when the vertical upward suction is adopted and the cover opening is 20-25cm away from the solder joint and the exhaust velocity is controlled at 0.4-0.6m/s.