The document discusses different types of steam boilers, their classifications and components. It describes how boilers are classified based on the position of hot gases and water, method of firing, steam pressure, and water circulation method. It also discusses boiler mountings and accessories. Boiler mountings include safety devices like safety valves, pressure gauges, and fusible plugs. Boiler accessories that improve efficiency include water heating devices, superheaters, economizers, air preheaters, feed pumps and injectors.
High Pressure Boilers — Classification. Construction and principle of working of Lamont boiler, Benson boiler, Loeffler boiler, Velox boiler, Schmidt Hartman boiler, Ramsin boiler Fluidized bed combustion boilers (FBC): principle, need, types, various arrangement, control system and advantages over other boiler systems. Comparison of various types of boilers Indian Boiler Regulation Act Maintenance procedure of major components of high pressure and FBC boilers
Types of air preheaters and its advantagesPreeti Agarwal
A very basic word to word meaning is a device used to heat the air before further use is called as Air Preheater. They are also recognized as air heaters or air-heating pipe. It is designed to exchange heat energy with desuperheaters. Desuperheater is a Device which is been used to reduce the temperature of the steam in a high heat generation plants where large amount of heat energy or steam is released in the atmosphere.
Steam Power Plant: Energy conversion in a thermal power station.
Limitations on conversion of heat into work, direct conversion
devices, central power station, industrial power station, captive
power station, advantages. Classification of power station on the
basis of prime-movers.
Elements of steam power plant, function of each element- generating
unit, prime mover, auxiliary equipment and turbo generator.
Revision & Improvement of thermal efficiency of Rankine cycle by
lowering exhaust pressure, increasing boiler pressure and
superheating of steam. Simple problems on Rankine efficiency.
Reheat cycle: Representation on T-S and H-S planes, flow diagram
and advantages. Simple regenerative cycle: flow diagram,
representation on T-S and H-S planes, bleeding and feed water
heating and pumping.
High Pressure Boilers — Classification. Construction and principle of working of Lamont boiler, Benson boiler, Loeffler boiler, Velox boiler, Schmidt Hartman boiler, Ramsin boiler Fluidized bed combustion boilers (FBC): principle, need, types, various arrangement, control system and advantages over other boiler systems. Comparison of various types of boilers Indian Boiler Regulation Act Maintenance procedure of major components of high pressure and FBC boilers
Types of air preheaters and its advantagesPreeti Agarwal
A very basic word to word meaning is a device used to heat the air before further use is called as Air Preheater. They are also recognized as air heaters or air-heating pipe. It is designed to exchange heat energy with desuperheaters. Desuperheater is a Device which is been used to reduce the temperature of the steam in a high heat generation plants where large amount of heat energy or steam is released in the atmosphere.
Steam Power Plant: Energy conversion in a thermal power station.
Limitations on conversion of heat into work, direct conversion
devices, central power station, industrial power station, captive
power station, advantages. Classification of power station on the
basis of prime-movers.
Elements of steam power plant, function of each element- generating
unit, prime mover, auxiliary equipment and turbo generator.
Revision & Improvement of thermal efficiency of Rankine cycle by
lowering exhaust pressure, increasing boiler pressure and
superheating of steam. Simple problems on Rankine efficiency.
Reheat cycle: Representation on T-S and H-S planes, flow diagram
and advantages. Simple regenerative cycle: flow diagram,
representation on T-S and H-S planes, bleeding and feed water
heating and pumping.
Thermo Tech Engineering (TTE) is involved in manufacturing of industrial utility equipments and general fabrication. We offer complete waste heat recovery equipment Custom design fabrication installation and commissioning.
mounting and accessories of boiler in eme Pratik Patel
it contain detail of element used in boiler for its working
it also teach the concept of mounting
nd it is helpfull for the student of engineering 1 st year
# Thermal Engineering by rk rajput...
# This E-book includes (29 chapters + index + Contents) with no hidden pages...
# sorry for any insufficiency hope to like...
ABSTRACT
Heat/light/electrical energy is out today’s necessity and has scarcity also. Energy conservation is key requirement of any industry at all times.
In general, industries use heat energy for conservation of raw material to finished product. The source of heat energy is generally saturated or super heated steam. The steam generation is common use one boiler with carity of fuels. Whatever may be the fuel the generation should be as economy as possible which adds to the product cost. Further the usage of steam and recycling steam condensate back to boiler is an art depending on plant layouts.
In this project the steam generator is water tube boiler fired with rice husk. The steam is transferred to the tyre/tube moulds where tyres/tubes are cured while the heat is rejected to the tyres the condensate forms and this condensate is put back to the boiler. While doing so the steam is also stopped back to boiler without rejecting complete heat to the product. This gets flashed into atmosphere at feed water tank. The science of separation of condensate from steam saves energy. Better the separation more the fuel conservation.
In the steam generator the fuel is burnt to heat the water and form steam. This fuel burnt flue gas carries lot of energy, out through chimney. Prior to exhausting through the heat left in flue need to be recovered, through heat recovery mechanisms’. In this project an air-preheater condensate heat recovery unit is the major energy consuming station.
Hello,
I am trying to explain about Steam Generator (Boiler) in this session, due to length of said presentation, I am deciding to divide it in three parts.
Part 1 cover the “Introduction & Types of Steam Generator”
Part 2 cover about the “Parts of Steam Generator and Its Accessories & Auxiliaries” and
Part 3 cover the “Efficiency & Performance”
The equipment used for producing and transferring steam is called Steam generators/ Boilers. The necessary devices installed or mounted for the safety of boiler and its control are called boiler mountings. The devices which are installed in the boiler for their efficient operation and smooth working are called Boiler Accessories.
Cold heading is a process technology which make the work piece transformation and the shape close to the finished product to the utmost extent in few processes. It is the footstone of modern mechining and automobile industry. Toonney manufactures various heading die including drawing die, cold heading die, precision die, carbide dies, stamping die and forging die.
Boilers: classification, performance parameters, Draught and its calculations,KIET Group of Institutions
Boilers, classification of boilers, working of different boilers, boiler mountings and accessories, performance parameters of a boiler, heat balance sheet, draught and its calculations
Contains:
History, Specifications Of Boiler, Characteristics of boiler, construction and working, Salient features of boiler, Advantages and disadvantages, video
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
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Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
4. STEAM BOILERS, MOUNTINGS & ACCESSORIES
Classification of Boilers:
Boilers may be classified according to the following-
1. Relative position of Hot gases and Water
a) Fire tube boiler:
The hot gases passes through the tubes that are
surrounded by water. Fire tube boilers are also known by
certain common names-
i) Horizontal return tubular
ii) Locomotive fire box
iii) Scotch marine and,
iv) Vertical tubular
5. STEAM BOILERS, MOUNTINGS & ACCESSORIES
b) Water tube Boiler:
The water passes through the tubes and the hot gases
produced by combustion of fuel, flow outside. This
type of Boilers designated by the following
common names:
i) Babcock and Wilcox Boiler (straight but inclined
tubes which connect the headers).
ii) Stirling Boiler (multitubular boiler having bent
tubes that connect boiler drums to headers).
6. STEAM BOILERS, MOUNTINGS & ACCESSORIES
2. Method of firing
a) Internally fired Boilers:
The furnace is provided inside the boiler shell and is
completely surrounded by water cooled surfaces.
This method of firing is used in:
• Lancashire Boilers
• Locomotive Boilers and
• Scotch Boilers
7. STEAM BOILERS, MOUNTINGS & ACCESSORIES
b) Externally fired Boilers:
The furnace is provided outside/ under the boiler. It has an
advantage that its furnace is simple to construct and can
easily be enlarged, as and when required. This method of
firing is used in Babcock and Wilcox Boiler.
3) Pressure of Steam:
i) High pressure Boilers:
Boilers producing steam 80 bar and above are called High
pressure boilers. E.g.
* Babcock and Wilcox Boiler
* Lamont Boilers
* Velox Boilers and
* Benson Boilers etc.
8. STEAM BOILERS, MOUNTINGS & ACCESSORIES
ii) Low pressure Boilers:
Boilers producing steam Lower than 80 bar are called
Low pressure boilers. E.g.
• Cochran Boilers
• Cornish Boiler
• Lancashire Boiler
• Locomotive Boiler
9. STEAM BOILERS, MOUNTINGS & ACCESSORIES
4. Method of circulation of water:
a) Natural circulation method
Circulation set up by convection current or by
gravity.
b) Forced circulation method
Circulation set up for high pressure steam through
pumps.
11. BOILER MOUNTINGS AND ACCESSORIES
Boiler Mountings:
The necessary devices installed or mounted for
the safety of boiler and its control are called
boiler mountings.
12. BOILER MOUNTINGS AND ACCESSORIES
Boiler Accessories:
The devices which are installed in the boiler for
their efficient operation and smooth working are
called Boiler Accessories.
13. BOILER MOUNTINGS AND ACCESSORIES
Boiler Mountings for safety:
1. Two water level indicators – 2
2. Two safety valves.
3. Combined high steam and low water safety
valve.
4. Fusible plug.
14. BOILER MOUNTINGS AND ACCESSORIES
Boiler Mountings for control:
1. Pressure gauge
2. Junction or stop valve
3. Feed check valve
4. Blow-off cock
5. Man hole and mud hole
15. BOILER MOUNTINGS AND ACCESSORIES
Boiler Accessories for efficient operation:
1. Water heating devices.
2. Water feeding devices.
3. Super heater
4. Economizer
5. Air preheater
18. BOILER MOUNTINGS
2. PRESSURE GAUGE
(Bourdon’s)
a) Records gauge pressure
b) Elliptical spring tube is also called
Bourdon tube and is made up of
special quality Bronze.
c) Plug (P) is provided for cleaning the
siphon tube.
d) Siphon is filled with cold water to
prevent the hot steam entering into
the bourdon tube and spring tube
remains comparatively cool.
21. JUNCTION VALVE:
The valve placed directly on a boiler in order to regulate the
steam supply from boiler to steam pipe is called the Junction
Valve.
STOP VALVE:
The valve used to regulate the steam supply from the steam pipe
to the prime mover (steam engine or steam turbine) is called
Stop Valve.
23. FEED CHECK VALVE
1. Feed check valve
works as NRV (Non-
return valve).
2. Prevents the back
flow of water from
the boiler when the
feed water pump is
either not working or
in case of its failure.
25. FUSIBLE PLUG
• Plugs P and R are
made up of Gun
Metal.
• Plug S is made up
of Copper.
• Plug R is screwed
to the plug P.
• Plug S is locked into
plug R by a metal
like tin or lead.
26. MANHOLE
This is provided at suitable position on the boiler
shell so that the man can enter into boiler shell for
inspection, maintenance and repairs. This hole is
usually made in elliptical shape of the size convenient
for a man to enter through this hole. The opening is
closed by steam tight cover.
27. STEAM TRAP
Steam trap is used to collect and automatically drain
away the water resulted from partial condensation of
steam without steam to escape with this condensate
through a valve. The valve after draining the
condensate is closed. Is presses the leakage of steam
from the trap.
,
28. ANTIPRIMING PIPE
It is attached below the stop valve to avoid the water particles
being carried away along with steam. It has closed pipe with
closed ends of 1m and 2m length. The top side of the pipe has
perforations. When the steam passes through it, due to inertia
effect, the moisture of steam falls into the pipe and the steam
with reduced moisture passes into the stop valve.
29. BOILER ACESSORIES
The devices used to improve the
performance and operation of the
boilers are called boiler
accessories. Main accessories
used are:
30. Function:
The function of the air pre-heater is to
increase the temperature of air
before it enters the furnance. It is
generally placed after the
economiser.
31. Function:
An economiser is a device in which
the waste heat of the flue gases is
utilised for heating the feed water.
Economiser are of two types :
a) Independent type, and
b) Integral type
32. Function:
The function of an injector is to
feed water into the boiler. It is also
used where the space is not
available for the installation of a
feed pump
33. Function:
Its is a pump which is used to deliver
feed water to the boiler.
The appliances in common use for
delivering the feed-water into the
steam boilers are:
a) Reciprocating pump
b) Rotary pump