A burst of flame from a furnace in a direction opposed to the normal flow, usually caused by the ignition of an accumulation of combustible gases.


Related Terms

PEEPDOOR

A small door in a furnace with a glass opening through which combustion may be observed.

ONCE-THROUGH BOILER

A boiler in which water flows, without recirculation, sequentially through the economizer, furnace wall, and evaporating and superheating tubes.

MUFFLE FURNACE

A furnace with an externally heated chamber, the walls of which radiantly heat the contents of the chamber.

MELTING FURNACE

A furnace in which the frit for glass is melted.

LOW-FREQUENCY INDUCTION FURNACE

An induction furnace in which current flow at the commercial power-line frequency is induced in the charge to be heated.

LANCE DOOR

The door to a boiler furnace through which a hand lance is inserted.

LANCASHIRE BOILER

A cylindrical steam boiler consisting of two longitudinal furnace tubes which have internal grates at the front.

INTEGRAL-FURNACE BOILER

A type of steam boiler which incorporates furnace watercooling in the circulatory system.

INDUCTION FURNACE

An electric furnace in which heat is produced in a metal charge by electromagnetic induction.

HORIZONTAL FIRING

The firing of fuel in a boiler furnace in which the burners discharge fuel and air into the furnace horizontally.

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