Podcast
Questions and Answers
What is the main reason for using water tube boilers exclusively?
What is the main reason for using water tube boilers exclusively?
- When capacity is less than 7000 kg of steam per hour
- When used for marine purposes
- When pressure exceeds 10 bar (correct)
- When low pressure is required
How is the fuel supplied in a Babcock and Wilcox boiler?
How is the fuel supplied in a Babcock and Wilcox boiler?
- Through a hand hole
- Through a chimney
- Through the water level indicator
- Through the fire door to the grate (correct)
What material are the inclined water tubes typically made of in these boilers?
What material are the inclined water tubes typically made of in these boilers?
- Aluminum
- Stainless steel
- Mild steel (correct)
- Copper
What is the approximate angle of inclination of the water tubes to the horizontal?
What is the approximate angle of inclination of the water tubes to the horizontal?
Where does the water from the drum flow after passing through the inclined tubes?
Where does the water from the drum flow after passing through the inclined tubes?
What is used to force the hot gases to move upwards between the tubes in a Babcock and Wilcox boiler?
What is used to force the hot gases to move upwards between the tubes in a Babcock and Wilcox boiler?
What type of boiler consists of a cylindrical shell with a dome-shaped top?
What type of boiler consists of a cylindrical shell with a dome-shaped top?
In a simple vertical boiler, what is provided at the ends of each cross tube for cleaning purposes?
In a simple vertical boiler, what is provided at the ends of each cross tube for cleaning purposes?
Which boiler has the advantage that the sediment in the water falls to the bottom without directly contacting the hottest portion of the furnace gases?
Which boiler has the advantage that the sediment in the water falls to the bottom without directly contacting the hottest portion of the furnace gases?
What type of tubes are fitted inclined in a Cochran boiler to ensure efficient circulation of water?
What type of tubes are fitted inclined in a Cochran boiler to ensure efficient circulation of water?
What is the primary material used for constructing the shell of a Lancashire boiler?
What is the primary material used for constructing the shell of a Lancashire boiler?
Which type of boiler is commonly used in sugar mills and textile industries due to its reliability and simplicity of design?
Which type of boiler is commonly used in sugar mills and textile industries due to its reliability and simplicity of design?
What feature ensures that the combustion gases pass through a number of horizontal tubes surrounded by water in a Cochran boiler?
What feature ensures that the combustion gases pass through a number of horizontal tubes surrounded by water in a Cochran boiler?
In a Cornish boiler, what is used to prevent excessive heating of the plates at the bottom where sediment may collect?
In a Cornish boiler, what is used to prevent excessive heating of the plates at the bottom where sediment may collect?
Which mountings are commonly found in simple vertical boilers?
Which mountings are commonly found in simple vertical boilers?
In a Cochran boiler, what is burnt on the grate and collected in the ash pit for disposal?
In a Cochran boiler, what is burnt on the grate and collected in the ash pit for disposal?
What type of boiler is the scotch type marine boiler?
What type of boiler is the scotch type marine boiler?
Where are the combustion chambers located in a scotch boiler?
Where are the combustion chambers located in a scotch boiler?
For what type of applications are shell boilers considerably cheaper than water tube boilers?
For what type of applications are shell boilers considerably cheaper than water tube boilers?
What limits the use of natural circulation in modern high pressure boiler plants?
What limits the use of natural circulation in modern high pressure boiler plants?
In high pressure boilers, what does passing water flow through a partial system of tubing help with?
In high pressure boilers, what does passing water flow through a partial system of tubing help with?
What is a method used in high pressure boilers to increase heat transfer by evaporation?
What is a method used in high pressure boilers to increase heat transfer by evaporation?
Why are water tube boilers generally preferred for high pressure and high output applications?
Why are water tube boilers generally preferred for high pressure and high output applications?
What is the function of Sugden's superheater in a Lancashire boiler?
What is the function of Sugden's superheater in a Lancashire boiler?
How are the 'U' tubes in Sugden's superheater arranged inside a Lancashire boiler?
How are the 'U' tubes in Sugden's superheater arranged inside a Lancashire boiler?
What happens to the path of gases in relation to the damper control mechanism during operation?
What happens to the path of gases in relation to the damper control mechanism during operation?
When steam is directed to the main steam pipe without passing through the superheater, what valve is opened?
When steam is directed to the main steam pipe without passing through the superheater, what valve is opened?
What is the purpose of a steam separator in a boiler system?
What is the purpose of a steam separator in a boiler system?
How many 'U' tube groups are typically carried by one pair of headers in Sugden's superheater?
How many 'U' tube groups are typically carried by one pair of headers in Sugden's superheater?
In a double-acting pump, how is the water discharged?
In a double-acting pump, how is the water discharged?
What is the advantage of a double feed pump over a single feed pump?
What is the advantage of a double feed pump over a single feed pump?
How is an injector different from a feed pump?
How is an injector different from a feed pump?
What is the main function of an economiser?
What is the main function of an economiser?
How is an independent type economiser installed?
How is an independent type economiser installed?
What ensures that the excess water from an injector finds its way out?
What ensures that the excess water from an injector finds its way out?
Which part of the injector helps to regulate the flow of water?
Which part of the injector helps to regulate the flow of water?
What is the purpose of using pumps in high-pressure boilers?
What is the purpose of using pumps in high-pressure boilers?
How does the use of small diameter tubes in large number contribute to the efficiency of a boiler?
How does the use of small diameter tubes in large number contribute to the efficiency of a boiler?
What is the main purpose of pressurized combustion in boilers?
What is the main purpose of pressurized combustion in boilers?
Why does a Lamont boiler use a centrifugal pump?
Why does a Lamont boiler use a centrifugal pump?
How does a Loeffler boiler prevent salt deposition on inner surfaces?
How does a Loeffler boiler prevent salt deposition on inner surfaces?
What are the Feed Pumps used for in a boiler system?
What are the Feed Pumps used for in a boiler system?
Which type of pump consists of a pump cylinder and a piston?
Which type of pump consists of a pump cylinder and a piston?
What is one advantage of using small diameter tubes in large numbers in a boiler?
What is one advantage of using small diameter tubes in large numbers in a boiler?
What is one disadvantage that can be avoided due to compactness in high-pressure boilers?
What is one disadvantage that can be avoided due to compactness in high-pressure boilers?
Why is pressurized combustion used in boilers?
Why is pressurized combustion used in boilers?
What is the purpose of the dampers located at the front and back ends of the ash pit in the locomotive boiler?
What is the purpose of the dampers located at the front and back ends of the ash pit in the locomotive boiler?
What is the function of the fire tubes in the locomotive boiler?
What is the function of the fire tubes in the locomotive boiler?
Where is the steam collected over in the locomotive boiler?
Where is the steam collected over in the locomotive boiler?
What is the main function of the superheater tubes in a locomotive boiler?
What is the main function of the superheater tubes in a locomotive boiler?
Why can't a locomotive boiler achieve natural draught?
Why can't a locomotive boiler achieve natural draught?
What is located at one end of the cylindrical barrel in a locomotive boiler?
What is located at one end of the cylindrical barrel in a locomotive boiler?
Which component in a locomotive boiler ensures safety by releasing excess pressure?
Which component in a locomotive boiler ensures safety by releasing excess pressure?
What causes corrosion and scale formation in the water legs of a locomotive boiler?
What causes corrosion and scale formation in the water legs of a locomotive boiler?
In a locomotive boiler, what is discharged through the blast pipe to produce correct draught when exhaust steam is not available?
In a locomotive boiler, what is discharged through the blast pipe to produce correct draught when exhaust steam is not available?
What is the function of an economiser in a boiler system?
What is the function of an economiser in a boiler system?
Why is an air preheater used in a boiler system?
Why is an air preheater used in a boiler system?
What is the primary purpose of a superheater in a boiler?
What is the primary purpose of a superheater in a boiler?
Where are the superheaters usually located in relation to the furnace gases?
Where are the superheaters usually located in relation to the furnace gases?
What is a common method used to prevent soot deposit on pipes in an economiser?
What is a common method used to prevent soot deposit on pipes in an economiser?
Why is it important for the temperature range between parts of a boiler to be reduced?
Why is it important for the temperature range between parts of a boiler to be reduced?
Which type of air preheater is generally placed after the economiser in a boiler system?
Which type of air preheater is generally placed after the economiser in a boiler system?
What do superheaters help eliminate in a steam plant?
What do superheaters help eliminate in a steam plant?
What is the role of a blow-off cock in a boiler system?
What is the role of a blow-off cock in a boiler system?
What is an advantage of having a superheater in a boiler system?
What is an advantage of having a superheater in a boiler system?
Where is the mud collector located in a boiler?
Where is the mud collector located in a boiler?
What does the baffle in a steam drum of a Stirling water tube boiler do?
What does the baffle in a steam drum of a Stirling water tube boiler do?
How does a Babcock Wilcox water tube boiler with cross drum differ from a longitudinal drum boiler?
How does a Babcock Wilcox water tube boiler with cross drum differ from a longitudinal drum boiler?
What happens to combustion products in a fire tube boiler?
What happens to combustion products in a fire tube boiler?
Where is the steam taken from in a Babcock Wilcox water tube boiler?
Where is the steam taken from in a Babcock Wilcox water tube boiler?
What supports the steam drums and mud drum in a water tube boiler?
What supports the steam drums and mud drum in a water tube boiler?
How do fire brick arches contribute to combustion in a boiler?
How do fire brick arches contribute to combustion in a boiler?