“What are the simplest types of fume hoods?”
Fume hoods are used to take in fumes from chemical lab stations and ventilate them into the atmosphere. The simplest type is where the fume hood releases the same amount of air at a constant rate all the time, no matter what. These CAV Fume hoods (Constant Air Volume) are the simplest type of fume hoods available. The fact that they cannot change their air velocity in response to external stimuli means that they give sub-optimal performance.
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