power plant lab manu al list of experiment s.no. name of

S.No. 1 2 3 4 5

To study of boiler mountings and accessories. To Study of the Cochran boiler.To Study of the Lancashire boiler.To Study of locomotive boiler.To Study of Babcock & Wilcox Boiler.

Power Plant Lab ManuList of Experiment

Name of Experimentsstudy of boiler mountings and accessories.

To Study of the Cochran boiler.Study of the Lancashire boiler.Study of locomotive boiler.

To Study of Babcock & Wilcox Boiler.

Power Plant Lab ManuList of Experiment


To Study of the Cochran boiler. Study of the Lancashire boiler.Study of locomotive boiler.


Power Plant Lab Manual List of Experiment


Study of the Lancashire boiler.


Name of Experiments study of boiler mountings and accessories.

Aim Apparatus requiredModel of hol TheoryBoiler Mountings:according with IBR (Indian Boiler Regulation) of the boiler, boiler mountings are essential fittings for safe working of a boiler. Following are necessary boiler mountings:

Aim: To study of boiler mountings and Apparatus requiredModel of Safety valves, Water level indicator, Pressure gauge, Steam stop, Fusible Plug, Blowhole, Super heater,

Theory Boiler Mountings:according with IBR (Indian Boiler Regulation) of the boiler, boiler mountings are essential fittings for safe working of a boiler. Following are necessary boiler mountings:

Safety valve (2 Nos.):working pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant. Safety valves are located on the top of the boiler.

study of boiler mountings and

Apparatus required:Safety valves, Water level indicator, Pressure gauge, Steam stop, Fusible Plug, Blow

heater, Economizer, Air

Boiler Mountings: - The boiler mountings are the parts of boiler &according with IBR (Indian Boiler Regulation) of the boiler, boiler mountings are essential fittings for safe working of a boiler. Following are necessary boiler mountings:

Safety valve (2 Nos.):working pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant. Safety valves are located on the top of the boiler.

1. Dead weight safety valve

2. Spring loaded safety valve

3. Lever saf

4. High steam low water safety valve

BOILER MOUNTINGS & ACCESSORIES

study of boiler mountings and

: Safety valves, Water level indicator, Pressure gauge, Steam stop, Fusible Plug, Blow

Economizer, Air-pre

The boiler mountings are the parts of boiler &according with IBR (Indian Boiler Regulation) of the boiler, boiler mountings are essential fittings for safe working of a boiler. Following are necessary boiler mountings:

Safety valve (2 Nos.):- The main functioworking pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant. Safety valves are located on the top of the boiler.

Dead weight safety valve

Spring loaded safety valve

Lever safety valve

High steam low water safety valve

Figure 1 (a) Lever Safety Valve

EXPER


study of boiler mountings and accessories.

Safety valves, Water level indicator, Pressure gauge, Steam stop, Fusible Plug, Blowpre-heater, Steam injector, feed pump, Steam trap


The main functioworking pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant. Safety valves are located on the top of the boiler.

Dead weight safety valve

Spring loaded safety valve



RIMENT


accessories.

Safety valves, Water level indicator, Pressure gauge, Steam stop, Fusible Plug, Blowheater, Steam injector, feed pump, Steam trap


The main function of safety valveworking pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant. Safety valves are located on the top of the boiler. Following types of safety valve is used.



T NO. 1



The boiler mountings are the parts of boiler & are required for proper functioning. In according with IBR (Indian Boiler Regulation) of the boiler, boiler mountings are essential fittings for safe working of a boiler. Following are necessary boiler mountings:-

n of safety valve as shown in figure 1 working pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant.

Following types of safety valve is used.




are required for proper functioning. In according with IBR (Indian Boiler Regulation) of the boiler, boiler mountings are essential fittings for safe

as shown in figure 1 working pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant.


Safety valves, Water level indicator, Pressure gauge, Steam stop, Fusible Plug, Blow-off cock, Man heater, Steam injector, feed pump, Steam trap


as shown in figure 1 (a) is to maintain safe working pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steaatmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant.


off cock, Man


(a) is to maintain safe working pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond the safe value, it may cause of an accident. This can be prevented by allowing excess steam to atmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant.

off cock, Man


(a) is to maintain safe working pressure inside the boiler shell. When the steam pressure increases inside boiler shell beyond

m to atmosphere through safety valve. The escape of steam makes an audio noise to warn the attendant.

Water level indicator (2 Nos.):(b) is to show the safe level of water inside the boiler. If the water level falls below the safe level & boiler continuously producing steam without further addition of water, an accident may occur with the boiler. A water level indicator consists of a metal & lower end of these tubes is connected to two gun metal hollow pipes. The upper pipe is opened to steam space & lower pipe is opened to water space. Water level indicator is located in front of boiler. The Hopkinson’s water level indicator is mostly used.

Pressure gauge:conveniently read it. Its main function is to read the steam pressure inside the boiler shell & is connected to steam space by a Siphon tube. The most commonly Bourdon pr

Steam stop valve:the steam supply to use wherever & whenever required. It can be operated manually or automatically. It is made of cast iron & cast means of regulator. The regulator is placed in the steam dome and operated by a rod & handle from the cabin of the driver.

Water level indicator (2 Nos.):is to show the safe level of water inside the boiler. If the water level falls below the safe level &

boiler continuously producing steam without further addition of water, an accident may occur with the boiler. A water level indicator consists of a metal & lower end of these tubes is connected to two gun metal hollow pipes. The upper pipe is opened to steam space & lower pipe is opened to water space. Water level indicator is located in front of boiler.

e Hopkinson’s water level indicator is mostly used.

Pressure gauge: conveniently read it. Its main function is to read the steam pressure inside the boiler shell & is connected to steam space by a Siphon tube. The most commonly Bourdon pr

Steam stop valve:the steam supply to use wherever & whenever required. It can be operated manually or automatically. It is made of cast iron & cast means of regulator. The regulator is placed in the steam dome and operated by a rod & handle from the cabin of the driver.

Water level indicator (2 Nos.):is to show the safe level of water inside the boiler. If the water level falls below the safe level &



- A pressure gauge is fitted in front of boiler in such a position that operator can conveniently read it. Its main function is to read the steam pressure inside the boiler shell & is connected to steam space by a Siphon tube. The most commonly Bourdon pr

Steam stop valve:-The steam stop valve is located on the highest part of the steam space. It regulates the steam supply to use wherever & whenever required. It can be operated manually or automatically. It is made of cast iron & cast means of regulator. The regulator is placed in the steam dome and operated by a rod & handle from the cabin of the driver.

Water level indicator (2 Nos.):- The main function of water level indicator is to show the safe level of water inside the boiler. If the water level falls below the safe level &



Figure 1

A pressure gauge is fitted in front of boiler in such a position that operator can conveniently read it. Its main function is to read the steam pressure inside the boiler shell & is connected to steam space by a Siphon tube. The most commonly Bourdon pr

The steam stop valve is located on the highest part of the steam space. It regulates the steam supply to use wherever & whenever required. It can be operated manually or automatically. It is made of cast iron & cast steel. In case of Locomotive boiler the flow of steam is controlled by means of regulator. The regulator is placed in the steam dome and operated by a rod & handle from the

The main function of water level indicator is to show the safe level of water inside the boiler. If the water level falls below the safe level &

boiler continuously producing steam without further addition of water, an accident may occur with the boiler. A water level indicator consists of a metal tube & a strong glass tube with marking. The upper & lower end of these tubes is connected to two gun metal hollow pipes. The upper pipe is opened to steam space & lower pipe is opened to water space. Water level indicator is located in front of boiler.


Figure 1 (b) Water Level Indicator


The steam stop valve is located on the highest part of the steam space. It regulates the steam supply to use wherever & whenever required. It can be operated manually or automatically.

steel. In case of Locomotive boiler the flow of steam is controlled by means of regulator. The regulator is placed in the steam dome and operated by a rod & handle from the

The main function of water level indicator is to show the safe level of water inside the boiler. If the water level falls below the safe level &

boiler continuously producing steam without further addition of water, an accident may occur with the tube & a strong glass tube with marking. The upper

& lower end of these tubes is connected to two gun metal hollow pipes. The upper pipe is opened to steam space & lower pipe is opened to water space. Water level indicator is located in front of boiler.


) Water Level Indicator




The main function of water level indicator which is shown in figure 1 is to show the safe level of water inside the boiler. If the water level falls below the safe level &



) Water Level Indicator

A pressure gauge is fitted in front of boiler in such a position that operator can conveniently read it. Its main function is to read the steam pressure inside the boiler shell & is connected to steam space by a Siphon tube. The most commonly Bourdon pressure gauge is used.



which is shown in figure 1 is to show the safe level of water inside the boiler. If the water level falls below the safe level &



A pressure gauge is fitted in front of boiler in such a position that operator can conveniently read it. Its main function is to read the steam pressure inside the boiler shell & is

essure gauge is used.







essure gauge is used.









Boiler accessoriesThese units are optional on a efficient boiler.

Fusible Plug:overheating. It is located just above the furnace in the boiler. It consists of gun metal plug fixed in a gun metal body with fusible molten metal. During normal operation it is covered by water but when water level falls t& fusible metal of plug melts, inner plug falls down. The water & steam then rush through the hole & extinguish the fire before any major damage occurs to the boiler.

Blow-bottom of the boiler. It can also be used to empty boiler water. Hence it is mounted at the lowest part of the boiler

Feed check valve: working level in the boiler. It is used to supply high pressure feed water to boiler. It also prevents the returning of feed water from the boiler if feed pump fails to work.

Man hole:least area. It is used for inspection, repairing/maintenance && Lancashire boiler its shape is circular. The man hole is made steam tight by asbestos packing.

Boiler accessorieshese units are optional on a efficient boiler.

Fusible Plug: - overheating. It is located just above the furnace in the boiler. It consists of gun metal plug fixed in a gun metal body with fusible molten metal. During normal operation it is covered by water but when water level falls too low in the boiler, it uncovers the fusible plug. The furnace gases heat up the plug & fusible metal of plug melts, inner plug falls down. The water & steam then rush through the hole & extinguish the fire before any major damage occurs to the boiler.

-off cock:-Its function is to discharge mud & other sediments accumulated at the water space bottom of the boiler. It can also be used to empty boiler water. Hence it is mounted at the lowest part of the boiler.

Feed check valve: working level in the boiler. It is used to supply high pressure feed water to boiler. It also prevents the returning of feed water from the boiler if feed pump fails to work.

Man hole: - It is generally oval /elliptical in shape. Elliptical shape makes easier to enter a man from least area. It is used for inspection, repairing/maintenance && Lancashire boiler its shape is circular. The man hole is made steam tight by asbestos packing.

Boiler accessories: - Boiler accessories are those integral parts of boiler which increases the plant efficiency. hese units are optional on a efficient boiler.

It is very important safety device which proteoverheating. It is located just above the furnace in the boiler. It consists of gun metal plug fixed in a gun metal body with fusible molten metal. During normal operation it is covered by water but when

oo low in the boiler, it uncovers the fusible plug. The furnace gases heat up the plug & fusible metal of plug melts, inner plug falls down. The water & steam then rush through the hole & extinguish the fire before any major damage occurs to the boiler.

Its function is to discharge mud & other sediments accumulated at the water space bottom of the boiler. It can also be used to empty boiler water. Hence it is mounted at the lowest part of

Feed check valve: - The feedworking level in the boiler. It is used to supply high pressure feed water to boiler. It also prevents the returning of feed water from the boiler if feed pump fails to work.

It is generally oval /elliptical in shape. Elliptical shape makes easier to enter a man from least area. It is used for inspection, repairing/maintenance && Lancashire boiler its shape is circular. The man hole is made steam tight by asbestos packing.

Boiler accessories are those integral parts of boiler which increases the plant efficiency. hese units are optional on a efficient boiler.




The feed check valve shown in figure 1(d) is fitted to the boiler, slightly below the working level in the boiler. It is used to supply high pressure feed water to boiler. It also prevents the returning of feed water from the boiler if feed pump fails to work.

Figure 1 (c


Boiler accessories are those integral parts of boiler which increases the plant efficiency. hese units are optional on a efficient boiler.




check valve shown in figure 1(d) is fitted to the boiler, slightly below the working level in the boiler. It is used to supply high pressure feed water to boiler. It also prevents the returning of feed water from the boiler if feed pump fails to work.

Figure 1 (c) Feed check valve


Boiler accessories are those integral parts of boiler which increases the plant efficiency.





) Feed check valve

It is generally oval /elliptical in shape. Elliptical shape makes easier to enter a man from least area. It is used for inspection, repairing/maintenance & cleaning purpose of the boiler. In Cornish & Lancashire boiler its shape is circular. The man hole is made steam tight by asbestos packing.


It is very important safety device which protects the fire tube boiler against overheating. It is located just above the furnace in the boiler. It consists of gun metal plug fixed in a gun metal body with fusible molten metal. During normal operation it is covered by water but when

oo low in the boiler, it uncovers the fusible plug. The furnace gases heat up the plug & fusible metal of plug melts, inner plug falls down. The water & steam then rush through the hole &



) Feed check valve

It is generally oval /elliptical in shape. Elliptical shape makes easier to enter a man from cleaning purpose of the boiler. In Cornish

& Lancashire boiler its shape is circular. The man hole is made steam tight by asbestos packing.


cts the fire tube boiler against overheating. It is located just above the furnace in the boiler. It consists of gun metal plug fixed in a gun metal body with fusible molten metal. During normal operation it is covered by water but when



check valve shown in figure 1(d) is fitted to the boiler, slightly below the working level in the boiler. It is used to supply high pressure feed water to boiler. It also prevents the

















Super heater:steam & to increase its temperature. During superheating steam pressure remains constant, its specific volume which steam flows & tak

Super heater: - It is a heat exchanger in which heat of combustion products is used to dry the wet steam & to increase its temperature. During superheating steam pressure remains constant, its specific volume & temperature increase only. A super heater consists of a set of small diameter U tubes in which steam flows & tak

It is a heat exchanger in which heat of combustion products is used to dry the wet steam & to increase its temperature. During superheating steam pressure remains constant, its specific

& temperature increase only. A super heater consists of a set of small diameter U tubes in which steam flows & takes up heat from hot flue gases as shown in figure 2 (a).


& temperature increase only. A super heater consists of a set of small diameter U tubes in es up heat from hot flue gases as shown in figure 2 (a).

Figure 2 (a) Superheater












& temperature increase only. A super heater consists of a set of small diameter U tubes in


& temperature increase only. A super heater consists of a set of small diameter U tubes in

Economizer:boiler. Economizer recovers some of waste heat of hot flue gases going to the chimney. It is placed in path of the hot flue gases at the rear end of the boiler just beconomizer is Green’s economizer

Economizer: - An economizer is a heat exchanger used for heating the feed water before it enters the boiler. Economizer recovers some of waste heat of hot flue gases going to the chimney. It is placed in path of the hot flue gases at the rear end of the boiler just beconomizer is Green’s economizer

An economizer is a heat exchanger used for heating the feed water before it enters the boiler. Economizer recovers some of waste heat of hot flue gases going to the chimney. It is placed in path of the hot flue gases at the rear end of the boiler just beconomizer is Green’s economizer

An economizer is a heat exchanger used for heating the feed water before it enters the boiler. Economizer recovers some of waste heat of hot flue gases going to the chimney. It is placed in path of the hot flue gases at the rear end of the boiler just beconomizer is Green’s economizer as shown in figure 2 (b

Figure 2 (b) Economizer

An economizer is a heat exchanger used for heating the feed water before it enters the boiler. Economizer recovers some of waste heat of hot flue gases going to the chimney. It is placed in path of the hot flue gases at the rear end of the boiler just b

as shown in figure 2 (b


An economizer is a heat exchanger used for heating the feed water before it enters the boiler. Economizer recovers some of waste heat of hot flue gases going to the chimney. It is placed in path of the hot flue gases at the rear end of the boiler just before air

as shown in figure 2 (b).


An economizer is a heat exchanger used for heating the feed water before it enters the boiler. Economizer recovers some of waste heat of hot flue gases going to the chimney. It is placed in

efore air-pre


pre-heater. Commonly used


heater. Commonly used


heater. Commonly used

Air-preheat of hot flue gases going to combustion chamber. Commonly used air

Steam injector: vertical & locomotive boilers. In it water is delivered to the boiler by steam pressure. The kinetic energy of expanding steam is given to feed water thus pressure & ve

Feed pump:

Rotary feed pump: into the boiler.

Reciprocatfeed pump is a Duplex feed pump. Double acting pumps are commonly used for medium size boiler.

Steam Trap:steam without allowing any steam to escape inside the boiler

pre-heater: -heat of hot flue gases going to combustion chamber. Commonly used air

Steam injector: -vertical & locomotive boilers. In it water is delivered to the boiler by steam pressure. The kinetic energy of expanding steam is given to feed water thus pressure & ve

Feed pump: - It is used to feed the water inside boiler drum. It may rotary or reciprocating type.

Rotary feed pump: into the boiler.

Reciprocating feed pumpfeed pump is a Duplex feed pump. Double acting pumps are commonly used for medium size boiler.

Steam Trap: - It automatically collects & returns the water, resulting frosteam without allowing any steam to escape inside the boiler

- Its function is similar to that of an economizer. It recovers some portion of waste heat of hot flue gases going to combustion chamber. Commonly used air

Figure 2 (c) Tubular Air Pre

- A steam injector lifts & forces the feed water into the boiler. It is usually used for vertical & locomotive boilers. In it water is delivered to the boiler by steam pressure. The kinetic energy of expanding steam is given to feed water thus pressure & ve

It is used to feed the water inside boiler drum. It may rotary or reciprocating type.

Rotary feed pump: - It is a high speed centrifugal pump & is used to deliver a large quantity of water

ing feed pump: - feed pump is a Duplex feed pump. Double acting pumps are commonly used for medium size boiler.

It automatically collects & returns the water, resulting frosteam without allowing any steam to escape inside the boiler

Its function is similar to that of an economizer. It recovers some portion of waste heat of hot flue gases going to the chimney & transfers some to the fresh air before it enters the combustion chamber. Commonly used air


A steam injector lifts & forces the feed water into the boiler. It is usually used for vertical & locomotive boilers. In it water is delivered to the boiler by steam pressure. The kinetic energy of expanding steam is given to feed water thus pressure & ve


It is a high speed centrifugal pump & is used to deliver a large quantity of water

These are positive displacement type pump. Most popular reciprocating feed pump is a Duplex feed pump. Double acting pumps are commonly used for medium size boiler.


Its function is similar to that of an economizer. It recovers some portion of waste the chimney & transfers some to the fresh air before it enters the

combustion chamber. Commonly used air-pre-heater is Tubular air








eater is Tubular air

Figure 2 (c) Tubular Air Pre-heater







eater is Tubular air-pre-heater as shown in figure 2 (c).

heater

A steam injector lifts & forces the feed water into the boiler. It is usually used for vertical & locomotive boilers. In it water is delivered to the boiler by steam pressure. The kinetic energy of expanding steam is given to feed water thus pressure & velocity of water increases.




It automatically collects & returns the water, resulting from partial condensation of


heater as shown in figure 2 (c).

A steam injector lifts & forces the feed water into the boiler. It is usually used for vertical & locomotive boilers. In it water is delivered to the boiler by steam pressure. The kinetic

locity of water increases.




m partial condensation of




locity of water increases.









These are positive displacement type pump. Most popular reciprocating


1. 2. What is the function of safety valve, water level indicator, pressure gauge, blow off cock, feed check valve? 3. What is the function of super heater? 4 What is the function of Economizer? 5 What is the function

1. What is the difference between Boi

2. What is the function of safety valve, water level indicator, pressure gauge, blow off cock, feed check valve?

3. What is the function of super heater?

4 What is the function of Economizer?

5 What is the function

What is the difference between Boi




5 What is the function of air pre

What is the difference between Boi




of air pre-heater?

Viva questio

What is the difference between Boiler Mountings and Accessories?




heater?

Viva questio

ler Mountings and Accessories?


Viva question

ler Mountings and Accessories?

2. What is the function of safety valve, water level indicator, pressure gauge, blow off cock, feed check valve?2. What is the function of safety valve, water level indicator, pressure gauge, blow off cock, feed check valve?2. What is the function of safety valve, water level indicator, pressure gauge, blow off cock, feed check valve?2. What is the function of safety valve, water level indicator, pressure gauge, blow off cock, feed check valve?2. What is the function of safety valve, water level indicator, pressure gauge, blow off cock, feed check valve?

Aim Apparatus requiredTheory Cochran boiler is a vertical, multifor small capacity steam generation. It is available in different sizes of evaporating capacity ranging from 1503000 kg/hr & working press

SPECIFICATIONS:

Shell diameter

Height

Working pressure

Steam generation capacity

Heating surface area

Thermal efficiency

CONSTRUCTION:

Cochran boiler cofor steam. The furnace is one piece construction and is seamless. Its crown has a hemispherical shape and thus provides maximum volume of space.

WORKING:

The fuel is burnt on the grate and ash is collected and disposed of from ash pit. The gases of combustion produced by burning of fuel enter the combustion chamber through the flue tube and strike against fire brick lining which directs them to pass througatmosphere through smoke box and chimney.

OUT STANDING FEATURES

Aim: To Study of the Cochran boiler Apparatus requiredTheory Cochran boiler is a vertical, multifor small capacity steam generation. It is available in different sizes of evaporating capacity ranging from 1503000 kg/hr & working press

SPECIFICATIONS:

Shell diameter

Height

Working pressure



Thermal efficiency

CONSTRUCTION:

Cochran boiler cofor steam. The furnace is one piece construction and is seamless. Its crown has a hemispherical shape and thus provides maximum volume of space.

WORKING:

The fuel is burnt on the grate and ash is collected and disposed of from ash pit. The gases of combustion produced by burning of fuel enter the combustion chamber through the flue tube and strike against fire brick lining which directs them to pass througatmosphere through smoke box and chimney.


(1.) Very compact and requires minimum

(2.) Any quality of fuel can be used with this boiler.

To Study of the Cochran boiler

Apparatus required:

Cochran boiler is a vertical, multifor small capacity steam generation. It is available in different sizes of evaporating capacity ranging from 1503000 kg/hr & working press

SPECIFICATIONS:-

Shell diameter

Working pressure



Thermal efficiency

CONSTRUCTION:-

Cochran boiler consists of a cylindrical shell with a dome shaped top as shown in figure 3 where the space is provided for steam. The furnace is one piece construction and is seamless. Its crown has a hemispherical shape and thus provides maximum volume of space.

WORKING:-

The fuel is burnt on the grate and ash is collected and disposed of from ash pit. The gases of combustion produced by burning of fuel enter the combustion chamber through the flue tube and strike against fire brick lining which directs them to pass through number of horizontal tubes, being surrounded by water. After which the gases escape to the atmosphere through smoke box and chimney.


Very compact and requires minimum

Any quality of fuel can be used with this boiler.

To Study of the Cochran boiler

: Model of Cochran boiler.

Cochran boiler is a vertical, multi-tube, natural circulation, fire tube, internally fired, low pressure boiler used for small capacity steam generation. It is available in different sizes of evaporating capacity ranging from 1503000 kg/hr & working pressure up to 20 bars.


nsists of a cylindrical shell with a dome shaped top as shown in figure 3 where the space is provided for steam. The furnace is one piece construction and is seamless. Its crown has a hemispherical shape and thus provides maximum volume of space.

The fuel is burnt on the grate and ash is collected and disposed of from ash pit. The gases of combustion produced by burning of fuel enter the combustion chamber through the flue tube and strike against fire brick lining which directs

h number of horizontal tubes, being surrounded by water. After which the gases escape to the atmosphere through smoke box and chimney.

OUT STANDING FEATURES:-

Very compact and requires minimum


EXPERCOCHRAN BOILER

To Study of the Cochran boiler.

Model of Cochran boiler.

tube, natural circulation, fire tube, internally fired, low pressure boiler used for small capacity steam generation. It is available in different sizes of evaporating capacity ranging from 150

ure up to 20 bars.

=2.75m

=5.8m

=up to 20 bar

=150-3000kg/hr

=120 square meter

=68-75%

nsists of a cylindrical shell with a dome shaped top as shown in figure 3 where the space is provided for steam. The furnace is one piece construction and is seamless. Its crown has a hemispherical shape and thus provides


h number of horizontal tubes, being surrounded by water. After which the gases escape to the atmosphere through smoke box and chimney.

Very compact and requires minimum floor area.


RIMENT COCHRAN BOILER

Model of Cochran boiler.


=up to 20 bar

3000kg/hr

=120 square meter



h number of horizontal tubes, being surrounded by water. After which the gases escape to the

floor area.


T NO. 2 COCHRAN BOILER

















tube, natural circulation, fire tube, internally fired, low pressure boiler used for small capacity steam generation. It is available in different sizes of evaporating capacity ranging from 150-




(3.) Best for small capacity requirement

(4.) Thermal efficiency is about 68

Best for small capacity requirement

Thermal efficiency is about 68


Thermal efficiency is about 68-75%


75%

Figure 3

Figure 3 Cochran boilerCochran boiler

Viva questions

1. What is a boiler?2. What is the difference between fire tube boiler and water tube boiler?3. How much the thermal 4. What is Specifications of Cochran boiler?5. Explain Construction detail of Cochran boiler

Viva questions

What is a boiler? What is the difference between fire tube boiler and water tube boiler?How much the thermal What is Specifications of Cochran boiler?Explain Construction detail of Cochran boiler

Viva questions

What is the difference between fire tube boiler and water tube boiler?How much the thermal efficiency of a boiler?What is Specifications of Cochran boiler?Explain Construction detail of Cochran boiler

What is the difference between fire tube boiler and water tube boiler?efficiency of a boiler?

What is Specifications of Cochran boiler?Explain Construction detail of Cochran boiler

What is the difference between fire tube boiler and water tube boiler?efficiency of a boiler?

What is Specifications of Cochran boiler? Explain Construction detail of Cochran boiler

What is the difference between fire tube boiler and water tube boiler?What is the difference between fire tube boiler and water tube boiler?

Aim Apparatus TheoryLancashire boiler is a stationary, fire tube, internally fired, natural circulation, horizontal, multipressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming capacity. Working pressure ranges from 16

SPECIFICATIONS: Diameter of shellLength of Working pressureEvaporating capacityThermal efficiency CONSTRUCTION:

It consist of a cylindrical shell inside which two large tube are placedseveral rings from and it is placed horizontally over brickwork which forms several channels for the flow of hot gases. These two tubes are also constructed several rings of cylindrical form. They pass from one end of the shell to the other and are coveredis introduced through the fire hole into the grate. There is low brickwork Fire Bridge at the back of the gate to prevent the entry of the burning co

WORKING:

The combustion product from the grate pass up to the back end of the furnace tubes and then in downward directionthereafter they move through the bottom channel or bottom flue up to theand pass up to the side flues. Now they move along the two side flues and come to the chimney flues from where they lead to the chimney. To control the flow of hot gases to the chimney,As a result the flow of air to the grate can be controlled.

OUT STANDING FEATURES:

Aim: To Study of the Lancashire boiler. Apparatus Theory Lancashire boiler is a stationary, fire tube, internally fired, natural circulation, horizontal, multipressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming capacity. Working pressure ranges from 16

SPECIFICATIONS:

Diameter of shellLength of shellWorking pressureEvaporating capacityThermal efficiency

CONSTRUCTION:

It consist of a cylindrical shell inside which two large tube are placedseveral rings from and it is placed horizontally over brickwork which forms several channels for the flow of hot gases. These two tubes are also constructed several rings of cylindrical form. They pass from one end of the shell to the other and are coveredis introduced through the fire hole into the grate. There is low brickwork Fire Bridge at the back of the gate to prevent the entry of the burning co

WORKING:

The combustion product from the grate pass up to the back end of the furnace tubes and then in downward directionhereafter they move through the bottom channel or bottom flue up to the

and pass up to the side flues. Now they move along the two side flues and come to the chimney flues from where they lead to the chimney. To control the flow of hot gases to the chimney,As a result the flow of air to the grate can be controlled.


(1.) Maintenance is easy.(2.) Heating surface per unit volume is large.


Apparatus required: Lancashire

Lancashire boiler is a stationary, fire tube, internally fired, natural circulation, horizontal, multipressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming capacity. Working pressure ranges from 16

SPECIFICATIONS:-

Diameter of shell shell

Working pressure Evaporating capacity Thermal efficiency

CONSTRUCTION:-

It consist of a cylindrical shell inside which two large tube are placedseveral rings from and it is placed horizontally over brickwork which forms several channels for the flow of hot gases. These two tubes are also constructed several rings of cylindrical form. They pass from one end of the shell to the other and are covered with water. The furnace is placed at the front of each tube and they are known as furnace tubes. The coal is introduced through the fire hole into the grate. There is low brickwork Fire Bridge at the back of the gate to prevent the entry of the burning coal and ashes into the interior of the furnace tube.

WORKING:-




Maintenance is easy.Heating surface per unit volume is large.


: Lancashire

Lancashire boiler is a stationary, fire tube, internally fired, natural circulation, horizontal, multipressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming capacity. Working pressure ranges from 16

=2-3 m =7-9 m =16 -20 bar =9000 kg/hr =50-70 %

It consist of a cylindrical shell inside which two large tube are placedseveral rings from and it is placed horizontally over brickwork which forms several channels for the flow of hot gases. These two tubes are also constructed several rings of cylindrical form. They pass from one end of the shell to the other

with water. The furnace is placed at the front of each tube and they are known as furnace tubes. The coal is introduced through the fire hole into the grate. There is low brickwork Fire Bridge at the back of the gate to prevent

al and ashes into the interior of the furnace tube.



OUT STANDING FEATURES:-

Maintenance is easy. Heating surface per unit volume is large.

EXPER

LANCASHIRE BOILER


: Lancashire boiler mode

Lancashire boiler is a stationary, fire tube, internally fired, natural circulation, horizontal, multipressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming capacity. Working pressure ranges from 16-20 bar and steam generation capacity up to 9000 kg/hr.

3 m 9 m

20 bar =9000 kg/hr

70 %






Heating surface per unit volume is large.

RIMENT

LANCASHIRE BOILER

boiler model

Lancashire boiler is a stationary, fire tube, internally fired, natural circulation, horizontal, multipressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming

20 bar and steam generation capacity up to 9000 kg/hr.






T NO. 3

LANCASHIRE BOILER



It consist of a cylindrical shell inside which two large tube are placed as shown in figureseveral rings from and it is placed horizontally over brickwork which forms several channels for the flow of hot gases. These two tubes are also constructed several rings of cylindrical form. They pass from one end of the shell to the other



The combustion product from the grate pass up to the back end of the furnace tubes and then in downward directionhereafter they move through the bottom channel or bottom flue up to the front end of the boiler where they are divided

and pass up to the side flues. Now they move along the two side flues and come to the chimney flues from where they lead to the chimney. To control the flow of hot gases to the chimney, dampers (



as shown in figure. The shell is constructed with several rings from and it is placed horizontally over brickwork which forms several channels for the flow of hot gases. These two tubes are also constructed several rings of cylindrical form. They pass from one end of the shell to the other


The combustion product from the grate pass up to the back end of the furnace tubes and then in downward directionfront end of the boiler where they are divided

and pass up to the side flues. Now they move along the two side flues and come to the chimney flues from where they dampers (in the form o



. The shell is constructed with several rings from and it is placed horizontally over brickwork which forms several channels for the flow of hot gases. These two tubes are also constructed several rings of cylindrical form. They pass from one end of the shell to the other



and pass up to the side flues. Now they move along the two side flues and come to the chimney flues from where they in the form of sliding door) are provided.

Lancashire boiler is a stationary, fire tube, internally fired, natural circulation, horizontal, multi-tube, lowpressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming





and pass up to the side flues. Now they move along the two side flues and come to the chimney flues from where they f sliding door) are provided.

tube, low pressure boiler. It is widely used due to its ability to burn coal of inferior quality & for better steaming



The combustion product from the grate pass up to the back end of the furnace tubes and then in downward direction, front end of the boiler where they are divided

and pass up to the side flues. Now they move along the two side flues and come to the chimney flues from where they f sliding door) are provided.

(3.) Load fluctuations can be meeting easily due to its large reserve capacity.(4.) Super heater & economizer improve its overall efficiency up to 80

Load fluctuations can be meeting easily due to its large reserve capacity.Super heater & economizer improve its overall efficiency up to 80



Figure 3


Figure 3 Lancashire Boiler

Load fluctuations can be meeting easily due to its large reserve capacity.Super heater & economizer improve its overall efficiency up to 80-85 %.

Lancashire Boiler

Load fluctuations can be meeting easily due to its large reserve capacity. 85 %.

1. Explain working of Lancashire

2. What is Specifications of Lancashire boiler?

3. Explain outstanding features of Lancashire Boiler.

Explain working of Lancashire

What is Specifications of Lancashire boiler?

Explain outstanding features of Lancashire Boiler.

Explain working of Lancashire



Viva questions

Explain working of Lancashire boiler.



Viva questions



Viva questions

Aim Apparatus Theory

The locomotive boiler is a horizontal, fireinduced fluctuating demand of steam. Working pressure is 14

SPECIFICATIONS:

Evaporating capacity

Working

Heati

Thermal efficiency

CONSTRUCTION:

A locomotive boiler has three main components: a doublecontaining a large number of small fluecontains larger fluelocomotive boiler by injecting exhausted steam back into the exhaust v

WORKING:

The coal is introduced through the fire hole into the grate which is placed at bottom of the fire box. The hot gases which are generated due to burning of coal are deflected by an arch of fire bricks, So that theproperly. The fir box is entirely surrounded by water except for the fire hole and ash pit which is situated below the fire box which is fitted with dampers at the front and back ends.

The hot gases pass from the fire box atmosphere through the chimney. The fire tube is placed inside the barrel. Some of these tubes are larger diameter and other of smaller diameter. The super heater tubes are plgases is transmitted into the water through the heating surface of the fire tubes. The steam generated is collected over the water surface.

Aim: To Study of locomotive boiler.

Apparatus Theory

The locomotive boiler is a horizontal, fireinduced draught, portable, low pressure boiler. The unit is designed to capability of meeting sudden & fluctuating demand of steam. Working pressure is 14

SPECIFICATIONS:


Working pressure

Heating surface

Thermal efficiency

CONSTRUCTION:

A locomotive boiler has three main components: a doublecontaining a large number of small fluecontains larger fluelocomotive boiler by injecting exhausted steam back into the exhaust v

WORKING:



Study of locomotive boiler.

Apparatus required: Locomotive

The locomotive boiler is a horizontal, firedraught, portable, low pressure boiler. The unit is designed to capability of meeting sudden &

fluctuating demand of steam. Working pressure is 14

SPECIFICATIONS:-


pressure

ng surface

Thermal efficiency

CONSTRUCTION:-

A locomotive boiler has three main components: a doublecontaining a large number of small fluecontains larger flue-tubes to carry the superlocomotive boiler by injecting exhausted steam back into the exhaust v

WORKING:-




: Locomotive

The locomotive boiler is a horizontal, firedraught, portable, low pressure boiler. The unit is designed to capability of meeting sudden &


=9000 kg/hr

=14-18 bar

=271 square meter

=70%

A locomotive boiler has three main components: a doublecontaining a large number of small flue-

tubes to carry the superlocomotive boiler by injecting exhausted steam back into the exhaust v


The hot gases pass from the fire box to the smoke box through a series of fire tubes and they are discharged into the atmosphere through the chimney. The fire tube is placed inside the barrel. Some of these tubes are larger diameter and other of smaller diameter. The super heater tubes are plgases is transmitted into the water through the heating surface of the fire tubes. The steam generated is collected over the

EXPELOCOMOTIVE BOILER


: Locomotive boiler model

The locomotive boiler is a horizontal, fire-tube, internally fired, Movable, multidraught, portable, low pressure boiler. The unit is designed to capability of meeting sudden &


kg/hr

18 bar

=271 square meter

A locomotive boiler has three main components: a double-tubes; and a smoke box with chimney, for the exhaust gases. The boiler barrel

tubes to carry the super-heater elements, where present. Forced draught is provided in the locomotive boiler by injecting exhausted steam back into the exhaust v


to the smoke box through a series of fire tubes and they are discharged into the atmosphere through the chimney. The fire tube is placed inside the barrel. Some of these tubes are larger diameter and other of smaller diameter. The super heater tubes are plgases is transmitted into the water through the heating surface of the fire tubes. The steam generated is collected over the

EXPERIMENT LOCOMOTIVE BOILER

boiler model

tube, internally fired, Movable, multi

draught, portable, low pressure boiler. The unit is designed to capability of meeting sudden & fluctuating demand of steam. Working pressure is 14-18 bar, steam generation capacity is 9000 kg/hr.

A locomotive boiler has three main components: a double-walled fire box; a horizontal, cylindrical "boiler barrel" s; and a smoke box with chimney, for the exhaust gases. The boiler barrel

heater elements, where present. Forced draught is provided in the locomotive boiler by injecting exhausted steam back into the exhaust v


to the smoke box through a series of fire tubes and they are discharged into the atmosphere through the chimney. The fire tube is placed inside the barrel. Some of these tubes are larger diameter and other of smaller diameter. The super heater tubes are placed inside the fire tubes of larger diameter. The heat of the hot gases is transmitted into the water through the heating surface of the fire tubes. The steam generated is collected over the

T NO.4 LOCOMOTIVE BOILER

tube, internally fired, Movable, multidraught, portable, low pressure boiler. The unit is designed to capability of meeting sudden &

18 bar, steam generation capacity is 9000 kg/hr.

walled fire box; a horizontal, cylindrical "boiler barrel" s; and a smoke box with chimney, for the exhaust gases. The boiler barrel

heater elements, where present. Forced draught is provided in the locomotive boiler by injecting exhausted steam back into the exhaust via a blast pipe in the smoke box

The coal is introduced through the fire hole into the grate which is placed at bottom of the fire box. The hot gases which are generated due to burning of coal are deflected by an arch of fire bricks, So that theproperly. The fir box is entirely surrounded by water except for the fire hole and ash pit which is situated below the fire

to the smoke box through a series of fire tubes and they are discharged into the atmosphere through the chimney. The fire tube is placed inside the barrel. Some of these tubes are larger diameter and

aced inside the fire tubes of larger diameter. The heat of the hot gases is transmitted into the water through the heating surface of the fire tubes. The steam generated is collected over the

tube, internally fired, Movable, multidraught, portable, low pressure boiler. The unit is designed to capability of meeting sudden &



heater elements, where present. Forced draught is provided in the ia a blast pipe in the smoke box

The coal is introduced through the fire hole into the grate which is placed at bottom of the fire box. The hot gases which are generated due to burning of coal are deflected by an arch of fire bricks, So that the wall of fire box may be heated properly. The fir box is entirely surrounded by water except for the fire hole and ash pit which is situated below the fire



tube, natural circulation, draught, portable, low pressure boiler. The unit is designed to capability of meeting sudden &



heater elements, where present. Forced draught is provided in the ia a blast pipe in the smoke box.

The coal is introduced through the fire hole into the grate which is placed at bottom of the fire box. The hot gases which wall of fire box may be heated

properly. The fir box is entirely surrounded by water except for the fire hole and ash pit which is situated below the fire






heater elements, where present. Forced draught is provided in the







heater elements, where present. Forced draught is provided in the





OUTSTANDING FEATURES:


(1.) Large rate of steam (2.) It is free from brickwork; special foundation reduces its installation cost.(3.) It is very popular in railways & ships due to its compactness & portable features.


Large rate of steam It is free from brickwork; special foundation reduces its installation cost.It is very popular in railways & ships due to its compactness & portable features.

OUTSTANDING FEATURES:-

Large rate of steam generation per square meter of heating surface.It is free from brickwork; special foundation reduces its installation cost.It is very popular in railways & ships due to its compactness & portable features.

generation per square meter of heating surface.It is free from brickwork; special foundation reduces its installation cost.It is very popular in railways & ships due to its compactness & portable features.

Figure 4 Locomotive

generation per square meter of heating surface.It is free from brickwork; special foundation reduces its installation cost.It is very popular in railways & ships due to its compactness & portable features.

Figure 4 Locomotive

generation per square meter of heating surface. It is free from brickwork; special foundation reduces its installation cost.It is very popular in railways & ships due to its compactness & portable features.

Figure 4 Locomotive Boiler

It is free from brickwork; special foundation reduces its installation cost. It is very popular in railways & ships due to its compactness & portable features.

Viva questions

Viva questions

1. Explain locomotive

2. What is Specifications of

3. What is construction detail

4. What is an outstanding feature

5. Explain working of

Viva questions

Explain locomotive

What is Specifications of

What is construction detail

What is an outstanding feature

Explain working of

Explain locomotive boiler.



What is an outstanding feature

Explain working of locomotive boiler.

boiler.

locomotive boiler?

What is construction detail of locomotive boiler

What is an outstanding feature of locomotive boiler

locomotive boiler.

locomotive boiler?

locomotive boiler ?

locomotive boiler

locomotive boiler.

locomotive boiler ?

Aim

Apparatus required

Theory

Babcock & Wilcox boiler is longitudinal drum, stationary, multiwater tube & high ranging from 11.5

SPECIFICATIONS:

Diameter of shell

Length of shell

Steam genera

Efficiency

CONSTRUCTION:

Babcock and Wilcox boiler with longitudinal drumfront end and rear end header by short riser tubes. To these headers solid drawn mild steel. The angle of inclination of the water tubes to the horizontal is about 15° or more.

WORKING:

The fire door the fuel is supplied to grate where it is burnt. The hot gases are forcedby baffle plates provided. The water from the drum flows through the inclined tubes via down take header and goes back into the shell in the form of water and steam via uptake header. The steam gets collected in the steamThe steam then enters through the ant priming pipe and flows in the super heater tubes where it is further heated and is finally taken out through the main stop valve and supplied to the Steam turbine or Steam engine when needed.

OUTSTA

Aim: To Study of Babcock & Wilcox Boiler.

Apparatus required

Theory

Babcock & Wilcox boiler is longitudinal drum, stationary, multiwater tube & high ranging from 11.5

SPECIFICATIONS:

Diameter of shell

Length of shell


Efficiency

CONSTRUCTION:


WORKING:



(1) Evaporating capacity is high 20000

(2) The defective tubes can be replaced easily.

(3) Draught loss is minimum and


Apparatus required:

Babcock & Wilcox boiler is longitudinal drum, stationary, multiwater tube & high pressure boiler. Evaporating capacity ranging from 2000ranging from 11.5-17.5 bar but sometimes pressure may be as high as 42 bars.

SPECIFICATIONS:-

Diameter of shell

Length of shell

ion capacity

CONSTRUCTION:-


WORKING:-


NDING FEATURES:




BABCOCK & WILCOX BOILER


: Babcock & Wilcox Boiler model

Babcock & Wilcox boiler is longitudinal drum, stationary, multipressure boiler. Evaporating capacity ranging from 200017.5 bar but sometimes pressure may be as high as 42 bars.

=1.22-1.83m

=6.096-9.144m

=20000-

=60-80%



NDING FEATURES:-




EXPEBABCOCK & WILCOX BOILER


Babcock & Wilcox Boiler model

Babcock & Wilcox boiler is longitudinal drum, stationary, multipressure boiler. Evaporating capacity ranging from 200017.5 bar but sometimes pressure may be as high as 42 bars.

1.83m

9.144m

-40000 kg/hr

80%

Babcock and Wilcox boiler with longitudinal drum as shown in Figure 5, ifront end and rear end header by short riser tubes. To these headers solid drawn mild steel. The angle of inclination of the water tubes to the horizontal is about 15° or more.


(1) Evaporating capacity is high 20000-40000 kg/hr & operating pressure rangi


(3) Draught loss is minimum and efficiency is high.

EXPERIMENT


Babcock & Wilcox Boiler model

Babcock & Wilcox boiler is longitudinal drum, stationary, multi

pressure boiler. Evaporating capacity ranging from 200017.5 bar but sometimes pressure may be as high as 42 bars.

as shown in Figure 5, ifront end and rear end header by short riser tubes. To these headers solid drawn mild steel. The angle of inclination of the water tubes to the horizontal is about 15° or more.


40000 kg/hr & operating pressure rangi


efficiency is high.

T NO.5 BABCOCK & WILCOX BOILER

Babcock & Wilcox boiler is longitudinal drum, stationary, multi-tube, natural circulation, externally fired, pressure boiler. Evaporating capacity ranging from 200017.5 bar but sometimes pressure may be as high as 42 bars.

as shown in Figure 5, it consists of a drum connected to a series of front end and rear end header by short riser tubes. To these headers are connected a series of inclined water tubes of solid drawn mild steel. The angle of inclination of the water tubes to the horizontal is about 15° or more.


40000 kg/hr & operating pressure rangi


tube, natural circulation, externally fired, pressure boiler. Evaporating capacity ranging from 2000-40000 kg/hr & working pressure 17.5 bar but sometimes pressure may be as high as 42 bars.

t consists of a drum connected to a series of are connected a series of inclined water tubes of

solid drawn mild steel. The angle of inclination of the water tubes to the horizontal is about 15° or more.

The fire door the fuel is supplied to grate where it is burnt. The hot gases are forced to move upwards between the tubes by baffle plates provided. The water from the drum flows through the inclined tubes via down take header and goes back into the shell in the form of water and steam via uptake header. The steam gets collected in the steamThe steam then enters through the ant priming pipe and flows in the super heater tubes where it is further heated and is finally taken out through the main stop valve and supplied to the Steam turbine or Steam engine when needed.

40000 kg/hr & operating pressure ranging from

tube, natural circulation, externally fired, 40000 kg/hr & working pressure


solid drawn mild steel. The angle of inclination of the water tubes to the horizontal is about 15° or more.

to move upwards between the tubes by baffle plates provided. The water from the drum flows through the inclined tubes via down take header and goes back into the shell in the form of water and steam via uptake header. The steam gets collected in the steam space of the drum. The steam then enters through the ant priming pipe and flows in the super heater tubes where it is further heated and is finally taken out through the main stop valve and supplied to the Steam turbine or Steam engine when needed.

ng from 11.5-40 bar.



to move upwards between the tubes by baffle plates provided. The water from the drum flows through the inclined tubes via down take header and goes back

space of the drum. The steam then enters through the ant priming pipe and flows in the super heater tubes where it is further heated and is finally taken out through the main stop valve and supplied to the Steam turbine or Steam engine when needed.

40 bar.



to move upwards between the tubes by baffle plates provided. The water from the drum flows through the inclined tubes via down take header and goes back

space of the drum. The steam then enters through the ant priming pipe and flows in the super heater tubes where it is further heated and is

(4) Whole structure is independent of structure rests on steel structure.

1.

2.

3.

4.

5.


Explain Babcock & Wilcox Boiler.



What are outstanding features

What is the inclined angle of tubes in Babcock & Wilcox Boilers and why?


Fig

Babcock & Wilcox Boiler.



What are outstanding features


(4) Whole structure is independent of brick work, hence boiler may be expand or contract easily because entire

Figure 5 Babcock & Wilcox Boile

Viva questions

Babcock & Wilcox Boiler.

What is Specifications of Babcock & Wilcox Boiler?

What is construction detail of Babcock & Wilcox Boiler?

What are outstanding features of Babcock


brick work, hence boiler may be expand or contract easily because entire

Babcock & Wilcox Boile

Viva questions

Babcock & Wilcox Boiler?





Babcock & Wilcox Boiler

Viva questions



& Wilcox Boiler?



r



brick work, hence boiler may be expand or contract easily because entire brick work, hence boiler may be expand or contract easily because entire

power plant lab manu al list of experiment s.no. name of

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