Fume hood
Overview
Ventilation (architecture)
Ventilating is the process of "changing" or replacing air in any space to provide high indoor air quality...
device that is designed to limit exposure to hazardous or noxious fume
Fume
Fumes and similar may refer to:* In common usage, more usually "fumes", a gas or vapor that smells strongly or is dangerous to inhale* Pere Fume , Canadian musician* Silica fume, a fine-grain, thin, and very high surface area silica...
s, vapor
Vapor
A vapor or vapour is a substance in the gas phase at a temperature lower than its critical point....
s or dust
Dust
Dust consists of particles in the atmosphere that arise from various sources such as soil dust lifted up by wind , volcanic eruptions, and pollution...
s. A fume hood is typically a large piece of equipment enclosing five sides of a work area, the bottom of which is most commonly located at a standing work height.
Two main types exist, duct
Duct (industrial exhaust)
Industrial exhaust ducts are pipe systems that connect hoods to industrial chimneys through other components of exhaust systems like fan, collectors etc...
ed and recirculating. The principle is the same for both types: air is drawn in from the front (open) side of the cabinet, and either expelled outside the building or made safe through filtration
Filtration
Filtration is commonly the mechanical or physical operation which is used for the separation of solids from fluids by interposing a medium through which only the fluid can pass...
and fed back into the room.
Other related types of local ventilation devices include: clean benches, biosafety cabinets
Laminar flow cabinet
A laminar flow cabinet or laminar flow closet or tissue culture hood is a carefully enclosed bench designed to prevent contamination of semiconductor wafers, biological samples, or any particle sensitive device. Air is drawn through a HEPA filter and blown in a very smooth, laminar flow towards...
, glove boxes and snorkel exhausts.
Unanswered Questions
