A passage way for conducting a current of fresh, foul, or heated air from one place to another
One or more flues are found inside a chimney They are the spaces through which smoke, gas or fumes rise
The hollow passage that carries smoke and heat to the outside from the fireplace or furnace
an air passage A compartment or division of a chimney for conveying flame and smoke to the outer air
In stacking lumber or other wood products for air drying, a vertical space, 6 inches or less in width in the center of the pile and extending the length of the pile, intended to facilitate circulation of air within the pile In kiln drying, one or more spaces 6 to 10 inches in width built into the kiln truckloads, particularly for drying in natural circulation dry kilns
Gas or air passage which usually depends on natural convection to cause the combustion gases to flow through it Forced convection may sometimes be used
an organ pipe where sound is produced by the passage of wind over an edge, as in an orchestral flute or recorder
A pipe or passage for conveying flame and hot gases through surrounding water in a boiler; distinguished from a tube which holds water and is surrounded by fire
Large pipe through which fumes escape from a gas water heater, furnace, or fire place Normally these flue pipes are double walled, galvanized sheet metal pipe and sometimes referred to as a B Vent Fireplace flue pipes are normally triple walled In addition, nothing combustible shall be within one inch from the flue pipe