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

Area of Science:

• Industrial Ventilation
• Environmental Engineering
• Fluid Dynamics

Background:

• Traditional trough-side exhaust hoods exhibit high energy consumption due to unidirectional airflow.
• Existing designs present challenges in efficient pollutant capture and energy management.

Purpose of the Study:

• To develop and evaluate a double-sided symmetrical push-pull industrial trough-side exhaust hood.
• To optimize airflow dynamics and pollutant capture efficiency.
• To assess the energy-saving potential compared to traditional methods.

Main Methods:

• Utilized ICEM and FLUENT simulation software for aerodynamic analysis.
• Investigated the relationship between air inlet/outlet distance and airflow volume ratio.
• Analyzed the correlation between airflow volume ratio and pollutant gas mass fraction (carbon monoxide).

Main Results:

• Established a quadratic relationship between air inlet/outlet distance and airflow volume ratio for optimal pollutant control.
• Identified optimal parameters: 0.12 m distance and 1.7 airflow ratio for minimal interference.
• Achieved a 75.8% energy saving rate with equivalent pollutant control efficacy.

Conclusions:

• The double-sided symmetrical design offers superior energy efficiency and pollutant control.
• This innovative hood design reduces costs associated with pollutant treatment and discharge.
• Presents a new, efficient approach for industrial pollutant management and ventilation.