flue

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flue

1
Music the passage in an organ pipe or flute within which a vibrating air column is set up

flue

2, flew
a type of fishing net
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Flue

An incombustible and heat-resistant enclosed passage in a chimney to control and carry away products of combustion from a fireplace to the outside air.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Flue

 

a smoke conduit, a passage for discharge of flue gases from space-heating furnaces, stoves, water heaters, and the like. In brick buildings flues are generally placed inside the inner main walls (the thickness of the flue wall must be at least half the width of a brick). Flues are frequently constructed with asbestos-cement pipes or ceramic or concrete blocks. The flue cross section may be rectangular, round, or oval. The flue is extended beyond the roof of a building for discharge of smoke into the atmosphere. It is topped by a chimney, which frequently joins together several flues. Exhaust ventilation conduits operating through natural drafts should be installed alongside the flue.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

flue

[flü]
(engineering)
A channel or passage for conveying combustion products from a furnace, boiler, or fireplace to or through a chimney.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

flue

An incombustible, heat-resistant enclosed passage in a chimney to control and carry away products of combustion from a fireplace to the outside air. Often, several fireplaces within a home are connected to a single large flue, but it is also common to carry up one flue for each fireplace.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.