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A kitchen hood in a small apartment. A kitchen hood, exhaust hood, hood fan, extractor hood, or range hood is a device containing a mechanical fan that hangs above the stove or cooktop in the kitchen. It removes airborne grease, combustion products, fumes, smoke, heat, and steam from the air by evacuation of the air and filtration. [1]
An adequate kitchen ventilation system should: Remove cooking fumes at the source, i.e. as close as possible to the cooking equipment. Remove excess hot air and introduce cool clean air, maintaining a comfortable environment.
Outside, fresh air is generally drawn into the system by a vent into a mix air chamber for mixing with the space return air. Then the mixture air enters an indoor or outdoor heat exchanger section where the air is to be cooled down, then be guided to the space creating positive air pressure.
Venting may refer to: Venting, a 2005 music album by Five.Bolt.Main "Venting", a song by Nines from the 2018 Crop Circle; Gas venting in the hydrocarbon and chemical industries; Hydrothermal vent; Venting in Drain-waste-vent system in plumbing; Venting in Permeability (foundry sand) Venting, in anger, a form of complaining
Fume hoods are a major factor in making laboratories four to five times more energy intensive than typical commercial buildings, [64] and these energy requirements are exacerbated in hot and humid climates. [65] Energy costs for a typical hood can range from $4,600/year in Los Angeles to $9,300/year in Singapore based on differences in cooling ...
The following design guidelines are selected from the Whole Building Design Guide, a program of the National Institute of Building Sciences: [4] Maximize wind-induced ventilation by siting the ridge of a building perpendicular to the summer winds; Widths of naturally ventilated zone should be narrow (max 13.7 m [45 feet])
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