Quantifying Dynamic Factors Influencing LEV Capture Efficiency

Ernest N. Morial New Orleans Convention Center 

Local exhaust ventilation is one of the most widely used engineering controls for reducing worker exposure to airborne contaminants. However, the effectiveness of these systems depends strongly on operational conditions such as airflow velocity, source proximity, and surrounding air movement. This presentation reports controlled chamber experiments that quantify how ventilation parameters influence capture efficiency for a circular flanged hood. The findings provide empirical evidence that can improve how industrial hygienists evaluate ventilation performance and interpret engineering control effectiveness in occupational settings.

P. Raynor, University of Minnesota, Minneapolis, MN, USA;
S. Arnold, University of Minnesota, Minneapolis, MN, USA;
G. Ramachandran, Johns Hopkins University, Baltimore, MD, USA;
H. Quick, University of Minnesota, Minneapolis, MN, USA 

S. Arnold, University of Minnesota, Minneapolis, MN, USA; G. Ramachandran, Johns Hopkins University, Baltimore, MD, USA; P. Raynor, University of Minnesota, Minneapolis, MN, USA; H. Quick, University of Minnesota, Minneapolis, MN, USA 

Exposure Assessment

Indoor air quality

Real-time detection services and direct reading instruments

Ventilation