Industrial exhaust ducts are pipe systems that connect hoods to industrial chimneys through other components of exhaust systems like fans, collectors, etc.
Ducts are low-pressure pneumatic conveyors to convey dust, particles, shavings, fumes, or chemical hazardous components from air in the vicinity to a shop floor or any other specific locations like tanks, sanding machines, or laboratory hoods.
[3] The conveying fluid that flows through the duct system is air.
Process design of exhaust system will include The goal is to keep contaminants out using minimum airflow.
It is estimated that increase in an inch wg[clarification needed] of static pressure can add a few thousands of dollars to the operation cost per annum.