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2. Direct vent fireplace - Wikipedia

   en.wikipedia.org/wiki/Direct_vent_fireplace

   The design of the direct vent fireplace allows for such a high level of efficiency because of the sealed firebox. The sealed firebox only allows combustion gasses to leave the system and exit the building. Since it is sealed, no warm air from the room is able to be drawn into the firebox and expelled out of the building. [8]

3. Ventilation (firefighting) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(firefighting)

   A conical hose-stream aimed around an opening—of a window or door, etc.—entrains smoke and thus increases the exhaust rate of smoke from the space. This is a process called hydraulic ventilation. This strategy might be used when the fire is small and protecting property from smoke damage can be achieved safely.

4. Fireplace - Wikipedia

   en.wikipedia.org/wiki/Fireplace

   Manufactured fireplaces are made with sheet metal or glass fire boxes. Electric fireplaces can be built-in replacements for wood or gas or retrofit with log inserts or electric fireboxes. A few types are wall mounted electric fireplaces, electric fireplace stoves, electric mantel fireplaces, and fixed or free standing electric fireplaces.

5. Firebox (steam engine) - Wikipedia

   en.wikipedia.org/wiki/Firebox_(steam_engine)

   Some fireboxes were equipped with a so-called combustion chamber, this is a distinct component from the firebox and tubes - a large single extension of the firebox space, into the boiler barrel, and above the brick arch and separated from the grate and the fire bed, this placed additional space between the fire and the rear fire tube/flue sheet.

6. Category:Steam locomotive fireboxes - Wikipedia

   en.wikipedia.org/wiki/Category:Steam_locomotive...

   This page was last edited on 3 February 2011, at 11:44 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

7. Fire-tube boiler - Wikipedia

   en.wikipedia.org/wiki/Fire-tube_boiler

   As firebox technology developed, it was found that placing a baffle of firebricks (heat-resistant bricks) inside the firebox to direct the flow of hot flue gasses up into the top of the firebox before it flowed into the fire tubes increased efficiency by equalizing the heat between upper and lower fire tubes. To hold these in place, a metal ...