The technology advancement has made it possible for the air filtration system to improve with time. The fume hood is also one of the mechanisms that has been evolved as a result of a modern technology. The fume hood, also called a fume closet or fume cupboard sometimes, is the kind of local ventilation device that has been developed to restrict the exposure to toxic or hazardous fumes, dusts and vapors. Having been this usage, the fume hood is one of the important components in lab settings as well as different industrial processes.
Fume Hood – The Key Components
A standard fume hood is made up of big piece of the equipment, enclosing the five sides of the work area, the bottom of which is usually located a standing work height. It has two key exists, ducted and ductless (recirculating). The principle of working is the same for both. The air is drawn from the open side of the cabinet, and either released outside the place or made safe via filtration and flown back into the place.
The Primary Purpose of Fume Hood
The fume hood is used for:
- To protect the people from toxic gases,
- To protect the equipment or the product
- To protect the environment
The Secondary Purpose of Fume Hood
The secondary functions of the fume hood may include spill containment, explosion protection and other functions essential to work being carried out in the device. Fume hoods are usually set back with the walls and fitted with the infills above, in order to cover the exhaust ductwork. Due to their recessed shape, the fume hoods are usually poorly illuminated by the general room lighting, so many have the internal lights with the vapor-proof covers. The front is usually a sash window, in glass typically, able to move on a counterbalance mechanism. n educational editions, the sides as well as the back of the unit is also glass sometimes, so that many students can look into the fume hood at a time.