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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]
If you’ve ever set off the smoke alarm while cooking, you could probably use some better ventilation. These can help.
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.
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.
30 varnished silicon steel foils each of thickness 0.0172 inches (0.4368 mm); density 7.51 g cm −3; measured near a temperature of 358.2 K under pressure in the range 0 — 128 psi: 0 psi 0.433 w m −1 K −1 20 psi 0.807 40 psi 0.965 60 psi 1.04 80 psi 1.10 100 psi 1.18 120 psi 1.24 128 psi 1.26 120 psi 1.26 100 psi 1.22 80 psi 1.18 60 psi ...
Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...