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In 1962, Bulleid Battle of Britain class 4-6-2 34064 Fighter Command was fitted with a Giesl ejector on the grounds that a desired spark arrestor would "suffocate" an ordinary blastpipe. It quickly became apparent, following some adjustment, that the ejector improved the locomotive design, and it was held in high regard by the crews. [ 4 ]
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 ]
Increasing the velocity of steam exhaust tended to both accelerate airflow through the firebox and lift the smoke higher above the top of the chimney. By the 1830s, steam exhaust was directed through a contracted nozzle called a blastpipe, so as to achieve the desired velocity through the chimney. Pressure drop through the blastpipe nozzle was ...
A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan (because it looks like a hamster wheel).
g = gravitational acceleration, 9.807 m/s 2; H = height of chimney, m; T i = average temperature inside the chimney, K; T e = external air temperature, K. Combining two flows into chimney: A t +A f <A, where A t =7.1 inch 2 is the minimum required flow area from water heater tank and A f =19.6 inch 2 is the minimum flow area from a furnace of a ...
A double chimney (or double stack, double smokestack in American English) is a form of chimney for a steam locomotive, where the conventional single opening is duplicated, together with the blastpipe beneath it. Although the internal openings form two circles, the outside appearance usually forms a single elongated oval.