The speed of dust-laden air as it passes in between dust collector filters.

The velocity of air measured at the face of an exhaust capture hood. 

The re-depositing of dust on the filter surface after it has been pulsed off. Re-entrainment is usually caused by turbulence in the hopper or dirty air plenum. 

A damper used to divert flames outside and away from collection equipment to avoid an explosion / fire.

A form of carbon with small pores that increase the surface area available for adsorption of chemicals and odors.

MEDIA RATIO:

The air exchange rate or air changes per hour is a measure of how many times the air within a factory is filtered and replaced.

Rotary vane which prevents air from entering a dust collector while allowing dust to drop out from the collector. A rotary airlock uses a roatating wheel on the dust collector hopper to continuously dump dust while mainting an air seal.

 Collecting and filtering the air from an entire room or facility, rathen than capturing pollutants at their source. Also known as General Ventilation.

 ASHRAE