An inclosed place in which heat is produced by the combustion of fuel, as for reducing ores or melting metals, for warming a house, for baking pottery, etc.; as, an iron furnace; a hot-air furnace; a glass furnace; a boiler furnace, etc.
Place for melting glass, built of several kinds of high temperature (refractory) materials to hold the glass and hold in the heat without breaking down during the several months that furnaces usually run. See also Tank, Pot Furnace, and Refractory.
Furnaces which recirculate the products of combustion and extract available heat to a point that causes condensation to occur. Some of this latent heat of vaporization is recovered as usable energy and results in higher operating efficiencies.
An enclosed heating device. Modernly, a box-shaped unit containing a burner, which is fed oil or gas through a pipe. The heat from the burning gas or oil is circulated, usually with the aid of a fan through ducts to areas to be heated.
An enclosure in which energy in a non thermal form is converted to heat, especially such an enclosure in which heat is generated by the combustion of a suitable fuel. An intensely hot place: the furnace of the sun; an attic room that is a furnace in the summer. A severe test or trial: endured the furnace of his friends' blame after the accident.
A heating system that uses the principle of thermal convection. When air is heated, it rises and as the air cools it settles. Ducts are installed to carry the hot air from the top of the furnace to the rooms. Other ducts, called cold air returns, return the cooler air back to the furnace.
An enclosed structure for the production and application of heat. In glassmaking, furnaces are used for melting the batch, maintaining pots of glass in a molten state, and reheating partly formed objects at the glory hole.
A type of space-heating equipment with an enclosed chamber where fuel is burned or electrical resistance is used to heat air directly without steam or hot water. The heated air is then distributed throughout a building, typically by air ducts.
An enclosed structure typically made of steel and fire brick that holds the hot glass in a ceramic vessel. 24 hours a day, seven days a week a one million BTU burner keeps the glass molten at a constant 2,150 degrees F. In this stage the glass is colorless and glows a bright white-orange. On the front of a furnace is a small, one foot square sliding door where a glass blower can access the molten glass using a blowpipe or punty.
A built up chamber in which fuel is burned to produce intense heat. Furnaces are used to heat plates, shapes, etc. to permit their being hammered or bent to a ship's form. A space or receptacle built in a boiler in which the combustion of fuel takes place.
an enclosed space for the burning of fuel. There are many kinds of furnaces, the type depending upon the fuel and the use to which the heat produced within it is put. Most familiar are the furnaces used in the heating of buildings. In the hot-air furnace, fuel is burned within an inner wall and air, led into a space between the inner and the outer wall, is heated and is led away to the various rooms of the building. Hot-water (hydronic) furnaces, by which water is heated to be led through pipes to radiators, and furnaces that turn water to steam for heating purposes are common.
A chamber, single or divided, constructed of stone, brick, or metal, in which materials are subjected to heat. Kinds of furnaces include: Air* Furnace; Blast* Furnace; Fusion* Furnace; Lamp* Furnace; Muffle* Furnace; Portable* Furnace; Reverberatory* Furnace; Sand* Furnace.
A unit which draws in cool air from an occupied space and passes the air through a heating chamber, combustion or electric, and then is returned to the occupied space; a heat system using air as the distribution fluid.
1. A type of space heating system that heats air. The heated air is circulated throughout a home or building using air ducts and registers. 2. Equipment or enclosure used to convert energy in a fuel into heat for any purpose; a combustion chamber.
(sc) a piece of equipment containing a resistanceheated element and a temperature controller. It is used to maintain a region of constant temperature with a controlled atmosphere for the processing of semiconductor devices.