The far end of the furnace is an enclosed box called the combustion chamber which extends upwards to link up with the firetubes.
The front wall of the combustion chamber is supported against steam pressure by the tubes themselves. The rear face is stayed by rod stays through the rear shell of the boiler. Above the combustion chamber and tubes is an open steam collecting space. Larger long rod stays run the length of the boiler through this space, supporting the ends of the boiler shell.
With multiple furnaces, there is a separate combustion chamber for each furnace. A few small boilers did connect them into one chamber, but this design is weaker. A more serious problem is the risk of reversing the draught, where exhaust from one furnace could blow back and out of the adjacent one, injuring the stokers working in front of it.
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Other articles related to "combustion chamber, chamber, combustion, combustion chambers":
... Each engine main combustion chamber (MCC) receives fuel-rich hot gas from a hot-gas manifold cooling circuit ... The gaseous hydrogen and liquid oxygen enter the chamber at the injector, which mixes the propellants ... A small augmented-spark igniter-chamber is located in the center of the injector, and this dual-redundant igniter is used during the engine start sequence to initiate combustion ...
... The "Inglis" modification adds an extra combustion chamber where an additional single large flue returns from the rear to the front of the boiler ... Multiple furnaces would share a single combustion chamber ... Surprisingly this is not from the additional combustion chamber, but from lengthening the narrow firetubes ...
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... from air from the front compressor that bypasses the combustion chamber and gas turbine section that leads directly to the nozzle or afterburner (where fitted) ... to increase the air pressure before it enters the combustion chamber ... Hot section Combustor or Can or Flameholders or Combustion Chamber — This is a chamber where fuel is continuously burned in the compressed air ...
Famous quotes containing the words chamber and/or combustion:
“My weary limbs are scarcely stretched for repose, before red dawn peeps into my chamber window, and the birds in the whispering leaves over the roof, apprise me by their sweetest notes that another day of toil awaits me. I arise, the harness is hastily adjusted and once more I step upon the tread-mill.”
—E. B., U.S. farmer. As quoted in Feminine Ingenuity, by Anne L. MacDonald (1992)
“The night has been unruly. Where we lay,
Our chimneys were blown down, and, as they say,
Lamentings heard i th air, strange screams of death,
And prophesying with accents terrible
Of dire combustion and confused events,
New-hatched to the woeful time.”
—William Shakespeare (15641616)