engineering plant
BOILER
FUNCTION
a closed vessel in which a liquid
(usually water) is heated under pressure to generate a gas
(usually steam)
CLASSIFIED TO:
HIGH PRESSURE: constructed to operate above the limits set for low-pressure boilers, and are typically used for power generation. LOW PRESSURE: limited to a maximum working pressure of 15 psig (pound-force per square inch gauge) for steam and 160 psig for hot water
A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications •
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Direction of axis of shell @ drum – vertical / horizontal The way of erected – stationary , portable, marine Location of the furnace – internally @ externally fired Position of water & hot gases – water tube @ fire tube.
As special boiler – natural circulation, force circulation and one through
There are 3 range of boiler depending on usage
LOW PRESSURE STEAM
BOILER
MEDIUM PRESSURE
STEAM BOILER
raging up to 15 psi
HIGH PRESSURE STEAM
BOILER
raging between 25psi to
50psi
Used for space heating, cooking, and hot water distribution within building Used in industrial heating, cooking, and sterilization Pressure more than
100psi
LEKAPAN DANDANG
Lekapan dandang bermaksud komponen asas yang terpasang pada dandang untuk membantu kecekapan dan keselamatan dandang semasa dioperasikan •
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Injap keselamatan (safety valve)
Tolok tekanan (pressure gauge)
Injap tiub turun (blowdown valve)
Pam suapan (feed water pump)
Feed water check valve
Palam boleh lebur (fusible plug)
Low water fuel cut out
Main steam stop valve
Tolok air (glass gauge)
Tiang air (water column)
Injap-injap
Exterior and sectional views of spring pop safety valve
A. Spring compression B. Lifting gear
C. spindle
E. Blow down control
D. Back pressure
I. Thermal disk
FUNCTION
a closed vessel in which a liquid
(usually water) is heated under pressure to generate a gas
(usually steam)
CLASSIFIED TO:
HIGH PRESSURE: constructed to operate above the limits set for low-pressure boilers, and are typically used for power generation. LOW PRESSURE: limited to a maximum working pressure of 15 psig (pound-force per square inch gauge) for steam and 160 psig for hot water
A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications •
•
•
•
•
Direction of axis of shell @ drum – vertical / horizontal The way of erected – stationary , portable, marine Location of the furnace – internally @ externally fired Position of water & hot gases – water tube @ fire tube.
As special boiler – natural circulation, force circulation and one through
There are 3 range of boiler depending on usage
LOW PRESSURE STEAM
BOILER
MEDIUM PRESSURE
STEAM BOILER
raging up to 15 psi
HIGH PRESSURE STEAM
BOILER
raging between 25psi to
50psi
Used for space heating, cooking, and hot water distribution within building Used in industrial heating, cooking, and sterilization Pressure more than
100psi
LEKAPAN DANDANG
Lekapan dandang bermaksud komponen asas yang terpasang pada dandang untuk membantu kecekapan dan keselamatan dandang semasa dioperasikan •
•
•
•
•
•
•
•
•
•
•
Injap keselamatan (safety valve)
Tolok tekanan (pressure gauge)
Injap tiub turun (blowdown valve)
Pam suapan (feed water pump)
Feed water check valve
Palam boleh lebur (fusible plug)
Low water fuel cut out
Main steam stop valve
Tolok air (glass gauge)
Tiang air (water column)
Injap-injap
Exterior and sectional views of spring pop safety valve
A. Spring compression B. Lifting gear
C. spindle
E. Blow down control
D. Back pressure
I. Thermal disk