Fifth Class Power Engineering Book 1 Questions and Answers
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Course
Power Engineering
Institution
Power Engineering
Fifth Class Power Engineering Book 1 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 h...
Fifth Class Power Engineering Book 1
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.
A
Drum
VI
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.
TU
Economizer
Also used in high pressure steam boilers to preheat the boiler feedwater before it enters
IS
the boiler.
OM
Forced Draft Fan
This is the fan that blows air combustion into the furnace through the windbox.
Header
NA
A larger pipe that supplies to or collects from a series of smaller pipes or tubes.It is also
called manifold.
JP
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.
A
VI
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.
TU
Waterline
the actual level of water in a boiler. It is the point at which water and steam separate.
IS
Watertubes
OM
these tubes have water circulating inside the tube with heat being applied to the outside.
Require more supervision for water treatment.
One reason that low capacity watertube boilers are seldom used for low pressure
NA
heating is that they:
A continuous copper tube
The heating surface of a copper-tubular boiler consist of:
JP
A type
the type of watertube boiler that has an upper drum and two lower drums is a ______
type.
Ease of installation
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