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Mahatma Gandhi Missions
College of Engineering and Technology
NOIDA (U.P.)
Report on Practical Industrial Training
Carried out at
ANPARA THERMAL POWER STATION
SONEBHADRA
From: _21-06-2011 to 18-07-2011.
SUB. BY:- SUB. TO:- MECHANICAL ENGINEERING
SANTOSH MAURYA DEPARTMENT MGM COET , NOIDA
CLASS:- BT ME
UNI. ROLL NO.:-0809540040
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Mahatma Gandhi Missions
College of Engineering and Technology.
Training Coordinator Head of the Department
:-Mr. ANURAG KUMAR :-Mr. S. R. JAMBULE
Noida, U.P., India
Department of Mechanical Engineering
CERTIFICATE
This is to certify that Mr. SANTOSH MAURYA of B. Tech.
Mechanical Engineering, Class_BT ME, Roll No. 0809540040 ha
completed his Industrial Training during the academic year 20
21-06-2011 to 31-07-2011 at ATPS,ANPARA
SONEBHADRA.
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CONTENT
Introduction1
Major requirement.1
Raw material used..2
Salient data and design specifications....3
Design parameter...3
Introductory overview...6
Coal fired thermal power station..8
Boiler and auxiliaries...9
Draught.11
Ash handling system12
Advantage & disadvantage..13
Induced draft fan..14
Milling system......16
Primary air preheater....17
Turbine-salient design..18
Constructional features.19
Role of turbine in power generation.20
Governing system.22.
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INTRODUCTION TO ANPARA A
Name of the factoryANPARA THERMAL POWER STATION
Address:- A.T.P.P
POST:-ANPARA
Disst.:-Sonebhadra(u.p)
Location- ATPP is situated at the north bank of Rihand reservoir about 220 kms south from
Varanasi and about 35 kms west south from Renukoot by road.
Total proposed capacity 4030MW in four stages
(3*210MW+2*500MW+2*600MW+2*600MW)
Present capacity 1630MW Anpara
Project cost- Anpara ATPS-Rs.721Cr.
Anpara BTPS-Rs-2060Cr.
Major Requirements-
COAL-A.Source-Kakri,Bina,Khadia coal mines.
B.Maximum consumption-48,840 MT/ day for 3130 MW(F grade coal).
C.Mode of transportation- MGR Rail Transportation System.
Water Source-Rihand reservoirChimney height:- ATPS-220 meters, BTPS-275 meters.
Ash disposal-ash slurry pumped to ash dyke.
Commencement of Work-July 1980
Commissioning of Unit 1 of ATPS-28Mar 1986
Commissioning of Unit 2 of ATPS-28 Feb 1987
Commissioning of Unit 3 of ATPS-12 Mar 1988
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Boundary Wall of the factory is about 1Km (in all direction from the main plant equipment).
RAW Material Used:
1.Water From Rihand reservoir
2.Coal From NCL having high ash content and low calorific value about 20000T/day.
3.Acid We use very dilute acid (5% conc.) about 1.5T/day.
4.Alkali We use very dilute alkali solution (5% conc.) about 1.5T/day.
List of all the section/ process plant:
Cole Handling plant. Boiler Area. Turbine Area. Generator & Transformer. Switch-Yard. Dematerializing plant. Ash Slurry Disposal System.
Salient data and design specification
A. Salient data Capacity 3*210MW Project cost 657.74 Cr. Generation per annum at 72%plf 4500MU/Annum Main plant & equipment
Steam generator(boiler and aux.) M/s BHEL,INDIA
Turbine ,Generator aux. KWU,WEST GERMANY through BHEL
Coal consumption per annum (E grade) 2.72Milliontone/annnum
Ash disposal(per annum) .816Milliont/annum Cooling water 30Meter cube/sec.
Transportation of coal MARRY GO ROUND RLY SYSTEM
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B.Design ParameterBoiler:
Radiant reheat,pulverized fuel,corner fired,bottom steam generator.
Steam generating capacity 680 Pressure 155kg/cmsqure Steam temp. at super heater outlet 540DegreeC Reheat steam flow 598T/hr Steam pre. At RH 37.6-36.1kg/cm2 Steam temp at RH inlet/outlet 342/540degree celsius
Feed water: Temp.at EOC inlet: 242degreeC Pressure at ECO inlet: 180kg/cm^2 Rated flow at ECO inlet: 655T/hr
Fuel: F/E grade bituminous coal of CV: 3750Kcal/kg Fixed carbon: 28% to 24% Volatile matter: 28% to 21% Moisture: 11% to 15% Ash: 33% to 40% Fusion temp: 1400degreeC Pulverisers: 6 nos. Capacity: 39.6T/hr.at55HGI
Steam turbine:Reaction, condensing, reheating,horizontal tandem compound, three
cylinder,regenerative,throttle governed.
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Rated output: 210000KW Speed: 3000rpm Pressure of steam at inlet: 150kg/cm^2 Temp. of steam at inlet: 535degreeC Condenser area: 11435m^2 Circulating water flow: 27000m^3/hr. Condenser vacuum: (-) 0.89kg/cm^2
Generator:247 MVA,PF0.85(lag),terminal voltage 15.75KV,rotor hydrogen cooled,stator
water cooled.
Seal oil pressure: 4.8 to 5.8kg/cm^2 Hydrogen pressure: 3to3.5kg/cm^2 (hydrogen purity98.8%) Stator water pressure: 2.5 to 2.8kg/cm^2 Static excitation system: Thirstier convertor power pack Field breaker.
At present 54.09% or 93918.38 MW (Data Source CEA, as on 31/03/2011) of total electricity
production in India is from Coal Based Thermal Power Station. A coal based thermal power plant
converts the chemical energy of the coal into electrical energy. This is achieved by raising the steam in
the boilers, expanding it through the turbine and coupling the turbines to the generators which converts
mechanical energy into electrical energy.
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Introductory overview-In a coal based power plant coal is transported from coal mines to the power plant by railway in
wagons or in a merry-go-round system. Coal is unloaded from the wagons to a moving
underground conveyor belt. This coal from the mines is of no uniform size. So it is taken to theCrusher house and crushed to a size of 20mm. From the crusher house the coal is either stored in
dead storage( generally 40 days coal supply) which serves as coal supply in case of coal supply
bottleneck or to the live storage(8 hours coal supply) in the raw coal bunker in the boiler house.
Raw coal from the raw coal bunker is supplied to the Coal Mills by a Raw Coal Feeder. The Coal
Mills or pulverizer pulverizes the coal to 200 mesh size. The powdered coal from the coal mills
is carried to the boiler in coal pipes by high pressure hot air. The pulverized coal air mixture is
burnt in boiler in the combustion zone.
Generally in modern boilers tangential firing system is used i.e. the coal nozzles/ guns form
tangent to a circle. The temperature in fire ball is of the order of 1300 deg.C. The boiler is a
water tube boiler hanging from the top. Water is converted to steam in the boiler and steam is
separated from water in the boiler Drum. The saturated steam from the boiler drum is taken to
the Low Temperature Superheater, Platen Superheater and Final Superheater respectively for
superheating. The superheated steam from the final superheater is taken to the High Pressure
Steam Turbine (HPT). In the HPT the steam pressure is utilized to rotate the turbine and the
resultant is rotational energy. From the HPT the out coming steam is taken to the Reheater in the
boiler to increase its temperature as the steam becomes wet at the HPT outlet. After reheating
this steam is taken to the Intermediate Pressure Turbine (IPT) and then to the Low Pressure
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Turbine (LPT). The outlet of the LPT is sent to the condenser for condensing back to water by a
cooling water system. This condensed water is collected in the Hotwell and is again sent to the
boiler in a closed cycle. The rotational energy imparted to the turbine by high pressure steam is
converted to electrical energy in the Generator.
Diagram of a typical coal-fired thermal power station
Principal-Coal based thermal power plant works on the principal of Modified Rankine Cycle.
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Components of Coal Fired Thermal Power Station:
Coal Preparationi)Fuel preparation system:In coal-fired power stations, the raw
feed coal from the coal storage area is first crushed into small pieces and then conveyed to the
coal feed hoppers at the boilers. The coal is next pulverized into a very fine powder, so that coal
will undergo complete combustion during combustion process.
pulverizer is a mechanical device for the grinding of many different types of materials. Forexample, they are used to pulverize coal for combustion in the steam-generating furnaces of
fossil fuel power plants.
Types of Pulverisers: Ball and Tube mills; Ring and Ball mills; MPS; Ball
mill; Demolition.
ii)Dryersthey are used in order to remove the excess moisture from coal mainly wetted during transport.
As the presence of moisture will result in fall in efficiency due to incomplete combustion and
also result in CO emission.
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iii)Magnetic separators: coal which is brought may contain iron particles.These iron particles may result in wear and tear. The iron particles may include bolts, nuts wire
fish plates etc. so these are unwanted and so are removed with the help of magnetic separators.
The coal we finally get after these above process are transferred to the storage site.Purpose of fuel storage is two
Fuel storage is insurance from failure of normal operating supplies to arrive. Storage permits some choice of the date of purchase, allowing the purchaser to take
advantage of seasonal market conditions. Storage of coal is primarily a matter of
protection against the coal strikes, failure of the transportation system & general coal
shortages.
There are two types of storage:
1. Live Storage(boiler room storage): storage from which coal may bewithdrawn to supply combustion equipment with little or no remanding is live storage.
This storage consists of about 24 to 30 hrs. of coal requirements of the plant and is usually
a covered storage in the plant near the boiler furnace. The live storage can be provided
with bunkers & coal bins. Bunkers are enough capacity to store the requisite of coal. Frombunkers coal is transferred to the boiler grates.
2. Dead storagestored for future use. Mainly it is for longer period of time, and it isalso mandatory to keep a backup of fuel for specified amount of days depending on the
reputation of the company and its connectivity.
There are many forms of storage some of which are
1. Stacking the coal in heaps over available open ground areas.2. As in (I). But placed under cover or alternatively in bunkers.3. Allocating special areas & surrounding these with high reinforced concerted
retaking walls.
Boiler and auxiliaries:A Boiler or steam generator essentially is a container into which water can be fed and steam can
be taken out at desired pressure, temperature and flow. This calls for application of heat on the
container. For that the boiler should have a facility to burn a fuel and release the heat. The
functions of a boiler thus can be stated as:-
1. To convert chemical energy of the fuel into heat energy2. To transfer this heat energy to water for evaporation as well to steam for superheating.
The basic components of Boiler are: -1. Furnace and Burners2. Steam and Superheating
a. Low temperature superheater
b. Platen superheater
c. Final superheater
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Economiser:It is located below the LPSH in the boiler and above pre heater. It is there to improve the
efficiency of boiler by extracting heat from flue gases to heat water and send it to boiler drum.
Advantages of Economiser include
1) Fuel economy:used to save fuel and increase overall efficiency of boiler plant.
2) Reducing size of boiler: as the feed water is preheated in the economiser and enter boiler
tube at elevated temperature. The heat transfer area required for evaporation reduced
considerably.
Air Preheater:The heat carried out with the flue gases coming out of economiser are further utilized for
preheating the air before supplying to the combustion chamber. It is a necessary equipment for
supply of hot air for drying the coal in pulverized fuel systems to facilitate grinding andsatisfactory combustion of fuel in the furnace
Reheater:Power plant furnaces may have a reheater section containing tubes heated by hot flue gases
outside the tubes. Exhaust steam from the high pressure turbine is rerouted to go inside the
reheater tubes to pickup more energy to go drive intermediate or lower pressure turbines.
Steam turbines:Steam turbines have been used predominantly as prime mover in all thermal power stations. The
steam turbines are mainly divided into two groups: -
1. Impulse turbine2. Impulse-reaction turbine
The turbine generator consists of a series of steam turbines interconnected to each other and a
generator on a common shaft. There is a high pressure turbine at one end, followed by an
intermediate pressure turbine, two low pressure turbines, and the generator. The steam at high
temperature (536 c to 540 c) and pressure (140 to 170 kg/cm2) is expanded in the turbine.
Condenser:The condenser condenses the steam from the exhaust of the turbine into liquid to allow it to bepumped. If the condenser can be made cooler, the pressure of the exhaust steam is reduced and
efficiency of the cycle increases. The functions of a condenser are:-
1) To provide lowest economic heat rejection temperature for steam.
2) To convert exhaust steam to water for reserve thus saving on feed water requirement.
3) To introduce make up water.
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We normally use surface condenser although there is one direct contact condenser as well. In
direct contact type exhaust steam is mixed with directly with D.M cooling water.
Boiler feed pump:Boiler feed pump is a multi stage pump provided for pumping feed water to economiser. BFP is
the biggest auxiliary equipment after Boiler and Turbine. It consumes about 4 to 5 % of
total electricity generation.
Cooling tower:The cooling tower is a semi-enclosed device for evaporative cooling of water by contact with air.
The hot water coming out from the condenser is fed to the tower on the top and allowed to tickle
in form of thin sheets or drops. The air flows from bottom of the tower or perpendicular to the
direction of water flow and then exhausts to the atmosphere after effective cooling.
The cooling towers are of four types: -
1. Natural Draft cooling tower
2. Forced Draft cooling tower
3. Induced Draft cooling tower
4. Balanced Draft cooling tower
Fan or draught system:In a boiler it is essential to supply a controlled amount of air to the furnace for effective
combustion of fuel and to evacuate hot gases formed in the furnace through the various heat
transfer area of the boiler. This can be done by using a chimney or mechanical device such asfans which acts as pump.
i) Natural draught:
When the required flow of air and flue gas through a boiler can be obtained by the stack
(chimney) alone, the system is called natural draught. When the gas within the stack is hot, its
specific weight will be less than the cool air outside; therefore the unit pressure at the base of
stack resulting from weight of the column of hot gas within the stack will be less than the column
of extreme cool air. The difference in the pressure will cause a flow of gas through opening in
base of stack. Also the chimney is form of nozzle, so the pressure at top is very small and gasesflow from high pressure to low pressure at the top.
ii) Mechanized draught:
There are 3 types of mechanized draught systems
1) Forced draught system
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2) Induced draught system
3) Balanced draught system
Forced draught:In this system a fan called Forced draught fan is installed at the inlet of the
boiler. This fan forces the atmospheric air through the boiler furnace and pushes out the hotgases from the furnace through superheater, reheater, economiser and air heater to stacks.
Induced draught: Here a fan called ID fan is provided at the outlet of boiler, that is, just
before the chimney. This fan sucks hot gases from the furnace through the superheaters,
economiser, reheater and discharges gas into the chimney. This results in the furnace pressure
lower than atmosphere and affects the flow of air from outside to the furnace.
Balanced draught:-In this system both FD fan and ID fan are provided. The FD fan is utilized to
draw control quantity of air from atmosphere and force the same into furnace. The ID fan sucks
the product of combustion from furnace and discharges into chimney. The point where draught is
zero is called balancing point.
Ash handling system:The disposal of ash from a large capacity power station is of same importance as ash is produced
in large quantities. Ash handling is a major problem.
i) Manual handling: While barrows are used for this. The ash is collecteddirectly through the ash outlet door from the boiler into the container from manually.
ii) Mechanical handling: Mechanical equipment is used for ash disposal, mainly bucketelevator, belt conveyer. Ash generated is 20% in the form of bottom ash and next 80% through
flue gases, so called Fly ash and collected in ESP.
iii) Electrostatic precipitator: From air preheater this flue gases (mixed with ash) goesto ESP. The precipitator has plate banks (A-F) which are insulated from each other between
which the flue gases are made to pass. The dust particles are ionized and attracted by charged
electrodes. The electrodes are maintained at 60KV.Hammering is done to the plates so that fly
ash comes down and collect at the bottom. The fly ash is dry form is used in cement
manufacture.
Generator:Generator or Alternator is the electrical end of a turbo-generator set. It is generally known as the
piece of equipment that converts the mechanical energy of turbine into electricity. The
generation of electricity is based on the principle of electromagnetic induction.
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Advantages of coal based thermal Power Plant They can respond to rapidly changing loads without difficulty A portion of the steam generated can be used as a process steam in different industries Steam engines and turbines can work under 25 % of overload continuously Fuel used is cheaper Cheaper in production cost in comparison with that of diesel power stations
Disadvantages of coal based thermal Power Plant Maintenance and operating costs are high Long time required for erection and putting into action A large quantity of water is required Great difficulty experienced in coal handling Presence of troubles due to smoke and heat in the plant Unavailability of good quality coal
Maximum of heat energy lost Problem of ash removing
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Induced Draft Fan
Each 210 MW ATP boiler is provided with two ID fens of AN 25e-6 (13) bladed. Axial impulse
BHEL makes. One fan can serves the purpose under low loads, through from operational point
of view. It preferable to van both fans at low Load as well. Each fan is capable for delivering
180.3m^3/sec. flue gases from The furnace for subsequent through the chimney.
Each fan consists of the following sub assemblies-
1. Suction chamber.
2. Impeller vane control.
3. Impeller supporting on two bearing.
4. Outlet guide vanes.
5. Diffuser.
6. Flexible couplingPin type
7. Outlet damper.
8. Bearing - self oiling roller bearing type.
Each fan driven by 6.6KV, 1520KW motor.
Specifications:
1. Fan type Axial impulse2. No. of fans per boiler two3. Fan capacity 244m^3/sec4. Head developed 503mm WCL5. Speed 990 rpm6. Motor rating 6.6KV,1520KW,50Hz,3-phase 0.86
lag, 95%
7. Power input to fan 1432KW8. Full load current 162.6Amp.
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9. NO load current 45 Amp.10.Insulation class F
Primary Air Fans
Each 210 MW boiler is provided with two PA fans of type NDV 22 TICFSTO. Radial single
suction, backward curved bladed BHEL make. This fan handles Clean atmospheric air which is
then preheated in L jungstorm air preheater. The hot primary air which comes out of the air
preheater scavenges. The bowl Mill and carries the coal particles to the burners. A parts of cold
air is used for sealing RC feeder, coal dust line at the discharge of mill. The other part of
suction of seal air fans is also primary cold air line .
Specification:-
1. Fan capacity 70 m^3/sec
2. Head developed 1210 mm WCL, 720(MCR)
3. Speed of fans& motor 1480 rpm
4. motor rating 6.6 KV, 1250 KW, 50 Hz 3-phase,
0.88 lag 94%
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Milling system
There are six bowl mills in each unit of3*210 MWATPS fromwhich four millr are takeninti
service for full load butdue to pour quality of coal five mills actually run.
Bowl mills specifications
I. Rating 6.6KV,3- phase,AC 985rpmII. Speed 985rpmIII. Full load current 40.5Amp.IV. No load current 16 Amp.V. Power 340KVVI. Bearing DE(NU324)VII. NDE(6324)VIII. MakeM/s BHEL,Haridwar.
AIR PREHEATER
The purpose of air preheater is to recover heat from the gases which isat considerable high temp.
and transfer this heat to incoming cold air bymeans of continuously rotating heating surface
element of specially formed metal plant as the rotor slowly revolves the mass of heating surfaceelements alternate through the gas air passes. Heat is absorbed by the heating surface elements
passing through the hot streams, then as these same elements are carried through the air stream
they realesed the stored up heat. This increases the temp of incoming cold air .
tri sector air preheater has three sector for:
I. Flue gasesII. Primary air(use for drying and transportof coal through mill to burner)III. Secondry air (additional air for combustion around the burner)
Specifications-
I. No of air preheater 2II. Size 27 VI 80(T)III. Arrangement vertical
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IV. Approximately heating surface 1900m2 APHV. Compressed air required for air motor 380NM3/hr/APHVI. Air line pressure 7kg/cm2VII. Drive motor rating
Wattage 11KW
Speed 1480rpm
Current 22 Amp.
210MW KWUTURBINE-SALIENT DESIGN
&CONSTRUCTIONAL FEATURES-
The turbine is tendem compound design with separate design with separate hp,ip&lp cylinder.
The hp turbine is of single flow type while ip & lpturbine are of double flow type. This is
condencing type single reheat. It is basically engineered on reaction principle with throttlegoverning .the stage are arranged fully capacity turbo generator. The turbine is capable of
accepting variation from the rated condition within the limit as recommended by IEC-45.
MODULAR CONCEPT-
The turbine built on well proven design philosophy of modular principal
in steam turbine engineering field the radially designed hp,ip, lp turbine modules are combined
and sized to required output ,steam parameter and cycle configuration to give most economical
turbine set .its main over ability is achieved without impairing the realibility of the modules
which is governed by the shape and configuration or rotors ,cylinders and distance between the
bearing.
TECHNICAL DATA FOR 210 MW TURBINE-
A.Thermal data in MKS. UNIT:
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I. Main steam pressure 150kg/cm2
II. MAIN STEAM TEMP. 535
III.Reheat temp 535
IV. FULL LOAD STEM FLOW 614T/hrV. Back pressuere range .03ATA to .12 ATA (ABS)VI. NO. EXTRACTIONS 6VII. NO. OF stages in hpt 25
IPT 2*20
LPT 2*8
C.Weight,length&speed-I. Weight of turbine 475 toneII. Over all length 16.975 mIII. Over all width 10.5mIV. Rated speed 3000rpmV. MAX. speed 3090rpmVI. MIN. speed 2850rpm
CONSTRUCTIONAL FEATURES-
I. HP TURBINE-The outer casing of the turbine is barrel type constructional
without any massive horizontal flange. This unique constructional permits rapid start
up from any thermal ,state and high rates of load change of the turbo sets . The steam
and metal temp matching requirements are also less stringent .
As there is not asymmetry of mass distribution in transverse or longitudinal planes.
II. IP TURBINE-THE IP TURBINE IS DOUBLE FLOW TURBINE with a horizontal
spilit ,inner casing being pnumetically supported within the outer casing as well as lp
inner casing is suspended from top halves so as to totally eliminate the effect on TG
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center line with of flanges although the casing is off horizontal spilit design yet these
do not impose any constraints on start thing and rapid fluctuations.
III. LP TURBINE-Lp turbine is also double flow type with area optimally selected for the
expected vaccum conditions . the casing of lp turbine is connected with ip cylinder by
two cross around pipes. One on either side of the machine level with the floor. The
horizontally split fabricated ip casing is comprised of three shells the bearing
pedestals are mounted on foundation.
The Role of Turbines in Power
Generation
Large scale electrical energy production largely depends on the
use of turbines. Nearly all of the world's power that is supplied
to a major grid is produced by turbines. From steam turbinesused at coal-burning electricity plants to liquid water turbines
used at hydro-electric plants, turbines are versatile and can be
used in a number of applications. There are also gas turbines
that combust natural gas or diesel fuel for use in remote locations or where a large backup power
supplyis required.A turbine is a simple device with few parts that uses flowing fluids (liquids or gases) to produceelectrical energy. Fluid is forced across blades mounted on a shaft, which causes the shaft to
turn. The energy produced from the shaft rotation is collected by a generator which converts the
motion to electrical energy using a magnetic field.
Most power plants use turbines to produce energy by burning
coal or natural gas. The heat produced from combustion isused to heat water in boiler. The liquid water is converted to
steam upon heating and is exhausted through a pipe which
feeds the steam to the turbine. The pressurized steam flowimparts energy on the blades and shaft of the turbine causing itto rotate. The rotational mechanical energy is then converted
to electrical energy using a generator.
A good analogy would be the common practice of heating water in a teapot on your stove. When
the water is heated to boiling temperature steam is produced increasing the pressure inside of thepot. The increased pressure causes the steam to exhaust through a tiny hole at a high rate.
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After the steam exits the turbine it is fed to a cooling tower where the steam cools and reverts
back to water. You can see this occurring when driving past a power plant and noticing thewhite plumes of smoke being emitted from large towers. This is not smoke, but rather a product
of the hot pipes heating water vapor in the cooler air
and generating steam.
A similar turbine design is used to produce hydro-
electric power at dams. When water is released fromthe lake side of the dam to the river side, it is fed across
a series of turbines. The high rate of flowing water
causes the turbines to turn rapidly where this energycaptured and converted to electricity. Energy produced
by hydro electric means has the added benefit of not
using emission producing fossil fuels which will pollute
the air. However, hydro-electric dams do affect theenvironment in other ways as they can disrupt vulnerable ecosystems that rely on the
environment where the dam is built.
There are also other forms of large scale electricity generation, like nuclear and geothermal;
however they are still very similar in that they still use turbines to produce the electricity but the
water is just heated by an alternative source. Some added risks are involved when using nuclearreactors to produce heat thus limiting their widespread use.
Other smaller scale types of turbines exist to produce power in remote locations or to generate
power in areas of the world where a power grid has yet to be established. The advantage of thistype of turbine is its high efficiency rating. If the waste heat is recovered by heat exchanger and
used to power another generator, in a combined cycle configuration, the efficiency can be as high
as 60%. In a cogeneration configuration where the waste heat is recovered and used to for spaceand water heating, the efficiency can be as high as 90%.
There are numerous other benefits to using a turbine to produce electrical power. Gas turbinesproduce a large amount of power in a small package. They can be turned on and off on demand
and it costs a lot less money and takes a lot less time to build a turbine than it does to build a coal
or natural gas burning power plant. They are also ideal for situations where high demand existson a power grid for short periods of time, like hot days in the summer, and a turbine is in place to
carry the extra load.
Large electrical companies like Siemens and GE manufacture and custom build turbines from 10MW to over 400MW depending on the customer's demands. There are also used dealers and
distributors around the world that may have a new surplus or used turbine immediately available
that fits your specifications.
The simplistic design, versatility, and efficiency of turbines allow for its widespread use in
electrical power generation. When deciding on your power supply, be sure to investigate the useof a turbine if the electrical demand is large enough.
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GOVERNING SYSTEM
The turbine is equipped with electrohydraulic governing system to facilitate the operation of
turboset is an inter connected grid system . the electrical measuring of and processing of signaloffer the advantage such as flexibility, dynamic stability , and simple representation of
complicated functional relationship. The processed electrical signal is introduced at a suitable
point in for control valve and the controls are continuous propotionaltype the offering following
advantages the speed of turbine generator set can be control by these types-
Hydraulic speed control Electrohydraulic control. Change over from hydraulic to electro hydraulic control. Change over from electro hydraulic to hydraulic control.