Search Result for "flue boiler":

The Collaborative International Dictionary of English v.0.48:

Flue \Flue\ (fl[=u]), n. [Cf. OF. flue a flowing, fr. fluer to flow, fr. L. fluere (cf. Fluent); a perh. a corruption of E. flute.] 1. An inclosed passage way for establishing and directing a current of air, gases, etc.; an air passage; esp.: (a) A compartment or division of a chimney for conveying flame and smoke to the outer air. (b) A passage way for conducting a current of fresh, foul, or heated air from one place to another. (c) (Steam Boiler) 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. Small flues are called fire tubes or simply tubes. [1913 Webster] 2. In an organ flue pipe, the opening between the lower lip and the languet. [Webster 1913 Suppl.] Flue boiler. See under Boiler. Flue bridge, the separating low wall between the flues and the laboratory of a reverberatory furnace. Flue plate (Steam Boiler), a plate to which the ends of the flues are fastened; -- called also flue sheet, tube sheet, and tube plate. Flue surface (Steam Boiler), the aggregate surface of flues exposed to flame or the hot gases. [1913 Webster]