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Fifth Class Power Engineering Book1 questions and answers
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Fifth Class Power Engineering Book1 questions and answers
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Fifth Class Power EngineeringBook1 questions and answers
Baffle
A wall, barrier or panel used to change the direction of flow of a
liquid and gas. On the water side of the boiler, baffles may be used
to direct the flow of water inside drums or header.
Drum
The boiler shell together with the heads form a drum to contain the
fluid being heated. The term drum is normally applied to watertube
boilers whereas the term shell is commonly used when referring to
firetube boilers.
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Economizer
Also used in high pressure steam boilers to preheat the boiler
feedwater before it enters the boiler.
Forced Draft Fan
, This is the fan that blows air combustion into the furnace through
the windbox.
Header
A larger pipe that supplies to or collects from a series of smaller
pipes or tubes.It is also called manifold.
Heating Surface
This include all parts of the boiler plates and tubes that have water
or steam on one side and are swept by fire or hot combustion gases
on the other side. the amount of heating surface a boiler contains is
used to determine the kW or horse power rating of the boiler.
Mud Drum
this is the lower drum on watertube boilers where mud or sludge
will collect and be removed from the unit. Also called a lower
header.
stack
This is the hollow duct through which combustion gases are
elevated for discharge to the atmosphere. It may also be called a
smokestack of chimney.
Superheater
Used in large high pressure steam boilers to increase the
temperature to the steam above the original boiling point
temperature. It produces very dry steam.
Uptake
The duct used to convey the spent combustion gases from the boiler
proper to the stack. Also known as the flue vent or breeching.
Waterline
the actual level of water in a boiler. It is the point at which water
and steam separate.
Watertubes
these tubes have water circulating inside the tube with heat being
applied to the outside.
Require more supervision for water treatment.
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