This post will tell you all about laboratory fume hoods. We will talk about the efficiency of the Fume Hood system, and all the factors that makes this product an amazing buy. Let’s discuss some details about its construction and where you can find a quality fume hood.
Partially enclosed work rooms with exhaust vents to the exterior are called fume hoods in laboratories. They serve the main function of excluding poisonous or unpleasant gases from the main laboratory work space. When an explosive reaction could occur, a secondary function is to safeguard the specimen or act as a barrier between the user and the apparatus being utilized.
Laboratory fume hoods
They are made up of the hood and a sash, which is the front panel that can be opened and closed to increase access and decrease airflow.
Hood face velocity
A measurement of hood face velocity is the rate of air flow across the fictitious plane connecting the bottom of the sash to the work surface. The hood face velocity is often expressed in feet per minute (fpm), and the higher it is, the faster poisons and other vapors can be removed from the system.
Fume Hood Efficiency
The needed air flow and hood face velocity of a fume hood are used to determine its efficiency.
Required airflow
In that it measures the volume of air needed to produce laminar flow at a speed of 100 feet per minute, necessary airflow is related to hood face velocity.
Hood face velocity of 100 fpm is often used to operate general purpose fume hoods. For use with particular chemicals and technology, stronger fume hoods are available. Radioisotope and perchloric acid hoods are two popular varieties.
Radioisotope hood systems
One of the best radioisotope hood systems are built of welded stainless steel to prevent radioactive material absorption. A face velocity of 125 fpm is necessary for radioisotope hoods in order to meet licensing standards.
Perchloric acid
Wash-down capabilities are included into perchloric acid hoods to stop the accumulation of explosive perchlorate salts in the exhaust systems.
Construction Types
Although unique designs are available, there are five primary forms of hood structure. These comprise:
Conventional hoods
They are the earliest and most basic hood design kind. No of the height of the sash, a typical hood always exhausts the same amount of air. (Left-side image)
Bypass Hood
To provide outside air to the face of the bypass hood, auxiliary air hoods have attached special ducts. An auxiliary air hood's principal benefit is the energy savings brought about by a reduction in the amount of heated or air-conditioned room air that is expelled by the hood.
Auxiliary air hoods
The front of the bypass hood is supplied with outside air via auxiliary air hoods that are connected to special conduits. This hood's principal benefit is the energy savings gained by lowering the amount of heated or air-conditioned room air that the hood exhausts.
Ductless fume hoods
In order to circulate air back into the lab after filtering, ductless fume hoods use a standard hood design. High Efficiency Particulate Air (HEPA) filters or Activated Carbon Filtration (ACF) technologies are both used by these hoods to remove impurities from the hood air.
Variable air volume (VAV) hoods
The most complex hood types are variable air volume (VAV) hoods, which need highly skilled design, installation, and maintenance. The capacity of VAV hoods to maintain a consistent face velocity when sash height varies is its key feature.
If you're seeking to get a dependable Laboratory Fume Hood, get in touch with IGene Labserve by going to https://www.igenels.com/ or calling 09310696848 to learn everything there is to know about the item.
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