Naval firing practice
Related Terms |
INTERMITTENT FIRING
A method of firing by which fuel and air are introduced and burned in a furnace for a short period after which flow is stopped, this succession occurring in a sequence of frequent cycles.
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FIRING RATE CONTROL
A pressure temperature or flow controller which controls the firing rate of a burner according to the deviation from pressure or temperature set point. The system may be arranged to operate the burner on-off, high-low or in proportion to load demand.
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INTERMITTENT IGNITION
An igniter which burns during light off and while the main burner is firing and which is shut off with the main burner.
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LOW FIRE START
The firing of a burner with controls in a low-fire position to provide safe operating condition during light off.
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STAGED AIR
NOx reduction technique predominantly used for fuel oil firing. The fuel is injected into a fuel-rich primary zone. This stoichiometry helps to control the fuel Nox mechanism. When firing gas, staged air produces higher NOx emissions than staged fuel.
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STEAM ATOMIZING OIL BURNER
A burner for firing oil which is atomized by steam. It may be of the inside or outside mixing type.
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AIR-ATOMIZING OIL BURNER
A burner for firing oil in which the oil is atomized by compressed air which is forced into and through one or more streams of oil, breaking the oil into a fine spray.
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FOUL
1. Having freedom of motion interfered with by collision or entanglement; entangled; the opposite of clear. For instance, a rope is foul when it does not run straight or smoothly, and an anchor is foul when it is caught on an obstruction.
2. A breach of racing rules.
3. An area of water treacherous to navigation due to many shallow obstructions such as reefs, sandbars, or many rocks, etc.
4. Foul the range: To block another vessel from firing her guns at a target.
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UNDERFEED STOKER
A coal firing system that introduces the coal under the fire.
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BOILER CONTROLS
Either manual or automatic devices which maintain desired boiler operating conditions with respect to variables such as feedwater flow, firing rate, and steam temperature.
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