Local Exhaust Ventilation
Local exhaust ventilation addresses the issue of avoiding the contamination of indoor air by specific high-emission sources by capturing airborne contaminants before they are spread into the environment. This can include water vapor control, lavatory bioeffluent control, solvent vapors from industrial processes, and dust from wood- and metal-working machinery. Air can be exhausted through pressurized hoods or through the use of fans and pressurizing a specific area.
A local exhaust system is composed of 5 basic parts
- A hood that captures the contaminant at its source
- Ducts for transporting the air
- An air-cleaning device that removes/minimizes the contaminant
- A fan that moves the air through the system
- An exhaust stack through which the contaminated air is discharged
Read more about this topic: Ventilation (architecture)
Famous quotes containing the words local and/or exhaust:
“The local snivels through the fields:
I sit between felt-hatted mums....”
—Philip Larkin (1922–1986)
“An entertainment is something which distracts us or diverts us from the routine of daily life. It makes us for the time being forget our cares and worries; it interrupts our conscious thoughts and habits, rests our nerves and minds, though it may incidentally exhaust our bodies. Art, on the other hand, though it may divert us from the normal routine of our existence, causes us in some way or other to become conscious of that existence.”
—Sir Herbert Read (1893–1968)