Research on a push-pull industrial trough-side exhaust hood based on CFD simulation and experiment.

The traditional industrial trough-side exhaust hood requires large energy consumption for one-way airflow because the air inlet and outlet are on both sides of the industrial slot. In this research, based on the improvement of the traditional push-pull trough-side exhaust hood, a double-sided symmetrical push-pull industrial trough-side exhaust hood is researched. Simulation software ICEM and FLUENT were used to research the relationship between the distance of air inlet and outlet and the air volume ratio, and the relationship between the air volume ratio and mass fraction of pollutant gases, using carbon monoxide as the pollutant gas. The research found that when the pollutant mass fraction reaches the specified level, the air inlet and outlet distance is quadratically related to the air volume ratio. When the distance between the inlet and outlet is 0.12 m and the corresponding minimum flow ratio is 1.7, the interference of the suction air outlet pressure on the blowing air outlet jet reaches the minimum. By comparing the energy consumption with the traditional industrial trough-side exhaust hood, the energy saving rate is 75.8% with the same pollutant control effect. The double-sided symmetrical push-pull industrial trough-side exhaust hood reduce the cost of treating and discharging pollutants and provides a new idea for industrial pollutant treatment.