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Kitchen ventilation is the branch of ventilation specialising in the treatment of air from kitchens. [1] It addresses the problems of grease, smoke and odours not found in most other ventilation systems. Restaurant kitchens often use large extractor hoods. Kitchen ventilation equipment includes an extractor hood or canopy, and a filtering system.
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] In commercial kitchens exhaust hoods are ...
Kitchen exhaust cleaning (often referred to as hood cleaning) is the process of removing grease that has accumulated inside the ducts, hoods, fans and vents of exhaust systems of commercial kitchens. Left uncleaned, kitchen exhaust systems eventually accumulate enough grease to become a fire hazard. [1] [2] Exhaust systems must be inspected ...
Fume hood. A fume hood (sometimes called a fume cupboard or fume closet) is a type of local exhaust ventilation device that is designed to prevent users from being exposed to hazardous fumes, vapors and dusts. The device is an enclosure with a movable sash window on one side that traps and exhausts gases and particulates either out of the area ...
Air changes per hour, abbreviated ACPH or ACH, or air change rate is the number of times that the total air volume in a room or space is completely removed and replaced in an hour. If the air in the space is either uniform or perfectly mixed, air changes per hour is a measure of how many times the air within a defined space is replaced each hour.
Flue. A flue is a duct, pipe, or opening in a chimney for conveying exhaust gases from a fireplace, furnace, water heater, boiler, or generator to the outdoors. Historically the term flue meant the chimney itself. [ 1] In the United States, they are also known as vents for boilers and as breeching for water heaters and modern furnaces.
Ventilation air methane thermal oxidizers are used to destroy methane in the exhaust air of underground coal mine shafts. Methane is a greenhouse gas and, when oxidized via thermal combustion, is chemically altered to form CO 2 and H 2 O. CO 2 is 25 times less potent than methane when emitted into the atmosphere with regards to global warming.
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