overall proj

8/13/2019 Overall Proj

1/23

Report on

INDUSTRIAL TRAINING

at

NTPC Ltd,

SIMHADRI TPP, VISAKHAPATNAM,

ANDHRA PRADESH.

By

D. SASI TEJA (07985 A0 203)

G. RAVI KUMAR (06981 A0 226)

Under the guidance of

Sri B.Bala Krishna, Superintend (EM), NTPC Ltd, Simhadri.

BACHELOR O TECH!OLOG"I!

ELECTRICAL # ELECTRO!ICS E!GI!EERI!G

D$%&'$* +, E-$'/&- #E-$'+*/ E*/*$$'/*

RAGHU ENGINEERING COLLEGED&&&''/ V/&4&%&*&.


2/23

HIGH TENSION SWITCHGEAR

CERTIFICATE

This is to certify that the mini project report entitled

INDUSTRIAL TRAINING

was carried out by Mr.D.Sasi TejaRegd. No. 07985 A0 203in

partial fulfillment to the award of degree in B.Tech in Electrical &

Electronics engineering during the academic year 2!"2# from

$ thjune %# to #thjuly%# in NT' (imhadri.

Sri B. Bala Krishna Prof. P.S Rao

Superintend (EM), Head of the Department,

Simhadri NTC !TD, EEE Department,

"i#a$hapatnam% Ra&hu En&&% Co''e&e,

% "i#a$hapatnam%


3/23


ACKNOWLEDGEENT

We ou'd 'i$e to e*pre## our profound appre+iation to our &uide

r.B.BalaKrishna, Superintend (EM) for e*tendin& the offi+ia' #upport for the

pro&ram of the proe+t%

Our #in+ere than$# to r. P. APPA RAO! Senior A##t% En&ineer "E'e+tri+a'

Maintenan+e), NTC Simhadri for hi# -a'ua.'e &uidan+e and time'/ #u&&e#tion# and

modifi+ation in fina'i0in& the proe+t or$ and a'#o en+oura&in& at e-er/ #tep

We a'#o e*pre## our than$# to Prof. P.S.Rao! Head of E'e+tri+a' and

E'e+troni+# En&ineerin& Department ho had &i-en #u&&e#tion# and moti-ation

toard# our proe+t%

At 'a#t e +on-e/ our than$# to one and a'' that e*tend their he'p dire+t'/ or

indire+t'/ to +omp'etion of our proe+t in time%

PRO#ECT ASSOCIATES

1


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INTRODUCTION

$.$ THE EERGING NEW %ORCE ON INDIAS POWER HORI&ON

SETTING A NEW BENCHARK

Simhadri Therma' oer roe+t +ome# a'i-e on the poer map of the +ountr/

ith the #/n+hroni0ation of the fir#t 233MW 4nit% Ra+in& a&ain#t time in proe+t

imp'ementation, the Simhadri Therma' oer roe+t ha# #et a ne .en+hmar$ for

&reen5fie'd proe+t of thi# #i0e and earned the di#tin+tion of .ein& the on'/ poer

proe+t of thi# #i0e and earned the di#tin+tion of .ein& the on'/ poer proe+t in the

+ountr/ to +ommi##ion the 233MW unit in a re+ord time of 16 month# from the date of

main p'ant order, a feat that i'' pro.a.'/ remain un#urpa##ed% Spread o-er an area of

1,178 a+re# near ara-ada in "i#a$hapatnam Di#tri+t of Andhra rade#h, the 9333MW

Simhadri Therma' oer roe+t ha# to unit# of 233MW +apa+it/ ea+h% The entire

poer &enerated from thi# #tation i'' .e #upp'ied to Andhra rade#h% The er#thi'e

Andhra rade#h State E'e+tri+it/ :oard had #i&ned a oer ur+ha#e A&reement ithNTC on ;e.ruar/ 8, 966 Another 9333MW ( * 233) under +on#tru+tion%

$.' UNI(UE %EATURES

SIHADRI THERAL POWER PRO#ECT HAS AN) %IRSTS

The Simhadri oer roe+t i# the fir#t +oa#ta' +oa' fired therma' poer

proe+t of NTC%

The .i&&e#t inta$e e'' in the +ountr/ ha# .een in#ta''ed in#ide the :a/ of

:en&a' to dra #ea ater for u#e in CW #/#tem a# ma$e up ater%

To natura' draft +oo'in& toer# of 9?2 metre hei&ht ea+h are the .i&&e#t in

A#ia and #i*th .i&&e#t in or'd%

;ir#t +oa' @ .a#ed proe+t of NTC from hi+h entire poer i# a''o+ated to

the home #tate i%e% Andhra rade#h%

Simhadri proe+t ha# +reated a ne .en+hmar$ of e*+e''en+e ./+ommi##ionin& the 233MW 4nit in 16 month#%

Simhadri Therma' oer roe+t a+hie-ed the .oi'er 'i&ht up of 233MW 4nit

in 129 month#, hi+h i# a nationa' re+ord%

The mo#t modern proe+t in India ha-in& the #tate of the art +ontro' and

in#trumentation #/#tem%

$.* PRO#ECT LOCATION

WHERE PAST GLOR) TURNS INTO A POWER%UL %UTURE

ara-ada manda' in "i#a$hapatnam Di#tri+t ha# the pride of .ein& the 'o+ation

for Simhadri Therma' oer roe+t% The proe+t i# appro*imate'/ 83$m from

"i#a$hapatnam Cit/ and i# approa+ha.'e ./ NH 52 -ia E'aman+hi'i5"i#a$hapatnam

8


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road and further from ara-ada to "ada+heepurupa''i ./ road% The neare#t rai'a/

#tation i# Du--ada on the Horah5Chennai main 'ine%

$.+ GENESIS

DOWN EOR) LANE

The roe+t name BSimhadri +ome# from Simha+ha'am, the hi'' top temp'e of

!ord "araha !a$#hminara#imha Sam/, hi+h i# 9?$m from "i#a$hapatnam% The

proe+t a# ori&ina''/ +on+ei-ed ./ the er#thi'e Andhra rade#h State E'e+tri+it/

:oard, hi+h #u.mitted a fea#i.i'it/ report to the CEA in Mar+h 9668% Su.#e=uent'/,

the Go-ernment of Andhra rade#h entru#ted the proe+t to NTC% After +omp'etin&

the topo&raphi+a' #ur-e/, &eo5te+hni+a' in-e#ti&ation, demo&raph/ and #o+io5

e+onomi+ #ur-e/#, NTC o.tained te+hno5e+onomi+ +'earan+e from the CEA in

Septem.er 966?% The u.'i+ In-e#tment :oard of Go-ernment of India &a-e it#appro-a' in ;e.ruar/ 966


6/23


ater% A


7/23


or$in& and one #tand./) to meet the ma$e up ater re=uirement for 233MW

unit# ha-e .een in#ta''ed% Thi# i# the .i&&e#t inta$e e'' in the +ountr/, hi+h i#

+on#tru+ted u#in& the uni=ue Cai#ion We'' #in$in& te+hno'o&/% A


8/23


1.11 PROJECT PROFILE (STAGE-1)

Appro-ed +apa+it/ > 9333MW (233MW)

!o+ation > araada Manda', "i#a$hapatnam, A%%

roe+t +o#t > R# 1,?23% :IC !oan and interna' re#our+e#%

;ue' Re=uirement > 2%38 Mi''ion Tonne# of +oa' per annum

Mode of Tran#portation > :/ rai'

Seet Water Re=uirement > ?33 +u.i+ metre# per hour

Sour+e > Fe'eru

Sea ater Re=uirement > 6,933 +u.i+ metre# per hour

Sour+e > :a/ of :en&a'

Main 'ant Turn$e/ pa+$a&e > Aarded to :HE! on No-em.er 1rd, 9667%

E-a+uation > Throu&h 833$- #/#tem of ATRANSCO

833$- Dou.'e +ir+uit "i0a&5"ema&iri5Nunna 'ine% 833$- Dou.'e +ir+uit "i0a&5hammam 'ine

833$- Dou.'e +ir+uit hammam5H/dera.ad%

833$- Dou.'e +ir+uit "i0a&5Gaua$a(GCI!)

!ine%

Commi##ionin& S+hedu'e > 233MW unit59 Mar+h 33 S/n+hroni#ed on

;e.ruar/ , 33 ahead of #+hedu'e%

> 233MW unit599 @De+em.er 33

:enefi+iar/ State > Andhra rade#h%

7


9/23


$.$' EH/ S5s6e7 8 +44K/ SWITCH)ARD AT SIHADRI

Sit+h /ard i# one and ha'f .rea$er arran&ement #/#tem% 1 .a/# (to main

.a/# and one tie .a/) ere u#ed for +ir+uit#% E*i#tin& #it+h/ard i# ha-in& four

out&oin& 'ine#, to &enerator +ir+uit# and one #tand./ tran#former +ir+uit% Ea+h .a/

ha-in& i#o'ator#, Earth #it+he# CT# and .rea$er% To #et# of #o'id .u#5.ar# u#ed and

Capa+iti-e "o'ta&e Tran#former# and Sur&e Arre#ter# +onne+ted to .u#%

I#o'ator# are +entre .rea$ i#o'ator# (identified a# 76), +ir+uit .rea$er# are S;?

dou.'e .rea$ ith h/drau'i+ operation (identified a# 2), Current tran#former# (CT)

ha-in& 2 #e+ondar/ +ore# ith 9A ratin& and Capa+iti-e "o'ta&e Tran#former# (C"T)

1 #e+ondar/ +ore# ith 993"% The .a/# are identified it num.er# a#


10/23


AIN PLANT

'.$ BOILER

Manufacturer @ :HE!, Type - Contro''ed Cir+u'ation With Rif'ed, Tu.in&, Dr/5:ottom,

Radiant Reheat, Sin&'e Drum, Top Supported, :a'an+ed Draft ;urna+e% T/pe of

;irin& 5 Ti'tin& Tan&entia'% arts of boiler)E+onomi0er, Water a''#, :oi'er

drum, Super heater#, Re5heater#, ;urna+e%

'.$$ Boiler A9:iliaries

(9) :oi'er Water Cir+u'atin& ump() Coa' ;irin& (1)Coa' ipin& :urner# (8) Oi' ;irin&(2) Sea' Air ;an(?) ID ;an (


11/23


'.- GENERATOR

Manufa+turer> :HARAT HEA"F E!ECTRICA!S !TD

Capa+it/> MW 233, %;% 3%72 !AG, "A 277,333 H0 23 T/pe> TG5HW532335

Stator "o't# 9333, Amp# 9?33, Coo'ant H Water

R%%M 1333, In#u'% C'a## ;, ha#e 1, Conn% FF

Ga# re##ure 1%2 :ar

Spe+% IEC518

Rotor> Amp# 8383, "o't# 183, Coo'ant H

'.-$ De6ails of ,44W Genera6or

The to5po'e &enerator u#e# dire+t ater +oo'in& for the #tator indin&, pha#e

+onne+tor# and .u#hin and dire+t h/dro&en +oo'in& for the rotor indin&% The 'o##e# in the

remainin& &enerator +omponent#, #u+h a# iron 'o##e#, inda&e 'o##e# and #tra/ 'o##e#, are

a'#o di##ipated throu&h h/dro&en%

The &enerator frame i# pre##ure5re#i#tant and &a#ti&ht and e=uipped ith one #tator

end #hie'd on ea+h #ide% The h/dro&en +oo'er# are arran&ed -erti+a''/ in#ide the tur.ine end#tator end #hie'd%

The &enerator +on#i#t# of the fo''oin& +omponent#>

K Stator> Stator frame, End #hie'd#% Stator +ore, Stator indin&, H/dro&en +oo'er#

K Rotor> Rotor #haft, Rotor indin&, Rotor retainin& rin, ;ie'd +onne+tion#, K :earin

Shaft #ea'#

The fo''oin& additiona' au*i'iarie# are there for &enerator operation>

K Oi' #/#tem K Ga# #/#tem K rimar/ ater #/#tem K E*+itation #/#tem

'.-' Po=er Cir>9i6 De6ails of ,44W Genera6or?$

The &enerated poer at 9$" +onne+ted to Generator Tran#former (GT, 1 * 33MW,983$", De'taStar, O;A;) and a'#o taped to to num.er# of 4nit Tran#former# (identified

a# 9:A5T39 9::5T39 of 23M"A, 999%2$", Star5Star) to +ater the need# of au*i'iarie# of

the parti+u'ar unit throu&h Generator Cir+uit :rea$er (GC:)% 833$" of GT59 +onne+ted to

Grid throu&h of 833$" Sit+h/ard, Simhadri a# #hon.a/ no%6 in ;i&%

99


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9


13/23


HT SITCHGEARS

*.$ De6ails of HT S=i6>h@ears in NTPC Si7hari.

9% There are three 'e-e'# of HT -o'ta&e# u#ed in the Simhadri therma' poer p'ant apart

from the &eneratin& -o'ta&e 9"% The/ are> (9) 11" () 99" and (1) 1%1"%99$" #/#tem u#ed for di#tri.ution and #upp'/ of #ome H" au*i'iar/ e=uipment# of

.oi'er tur.ine% 1%1$" u#ed for on'/ #upp'/ of H" au*i'iar/ e=uipment# of .oi'er,

tur.ine and off5#ite area#% 11$" #/#tem u#ed for tran#mi##ion of poer to Seet ater

#/#tem, Sea ater #/#tem and Ton#hip%

% **K/ Sit+h&ear# of "o'ta# ma$e or$in& at Mi#+e''aneou# Ser-i+e Sit+h&ear,

Seet ater, Sea ater, a#h ater and re5+ir+u'ation #it+h&ear#% ;i&%

1% $$K/Sit+h&ear# of :HE!ma$e or$in& at 4nit59> O:A, 9:A, 9:: and 4nit5>

:A, :: and Siemen# ma$e at Sea Water #/#tem% ;i&%

8% *.*K/Sit+h&ear# of :HE! ma$e or$in& at 4nit59> 9CA 4nit5> CA,

A#h hand'in&> OCA and A:: ma$e at Coa' Hand'in& 'ant (CH) ;i&%

91


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98


15/23


92


16/23


INTRODUCTION

NTCS #uper'ati-e #a&a of poer, Simhadri Therma' oer roe+t +ome#a'i-e on the poer map of the +ountr/ ith the #/n+hroni0ation of the fir#t 233MW

4nit% Ra+in& a&ain#t

time in proe+timp'ementation, the

Simhadri Therma'

oer roe+t ha# #et

a ne .en+hmar$ for

&reen5fie'd proe+t of

thi# #i0e and earned

the di#tin+tion of

.ein& the on'/ poer

proe+t of thi# #i0e in

the +ountr/ to+ommi##ion the

233MW unit in a

re+ord time of 16

month# from the date

of main p'ant order, a

feat that i'' pro.a.'/

remain un#urpa##ed%Spread o-er an area of

1,178 a+re# near ara-ada in "i#a$hapatnam Di#tri+t of Andhra rade#h, the

9333MW Simhadri Therma' oer roe+t ha# to unit# of 233MW +apa+it/ ea+h to+ater the poer re=uirement of A #tate e*+'u#i-e'/ in the /ear 9667%

The entire poer &enerated from thi# #tation i'' .e #upp'ied to Andhra

rade#h% In thi# re&ard the er#thi'e Andhra rade#h State E'e+tri+it/ :oard had

#i&ned a oer ur+ha#e A&reement ith NTC on ;e.ruar/ 8 966


17/23


;ir#t +oa' @ .a#ed proe+t of NTC from hi+h entire poer i# a''o+ated to the

home #tate i%e% Andhra rade#h%

The .i&&e#t inta$e e'' in the +ountr/ ha# .een in#ta''ed in#ide the :a/ of :en&a'

to dra #ea ater for of +onden#er +oo'in& and a#h di#po#a'

To natura' draft +oo'in& toer# of 9?2 metre hei&ht ea+h are the .i&&e#t in A#ia

and #i*th .i&&e#t in or'd

4#e of Monitor# and !ar&e "ideo S+reen#(!"S) a# Man Ma+hine

Interfa+e(MMI#) for operatin& the p'ant

The mo#t modern proe+t in India ha-in& the #tate of the art +ontro' and

in#trumentation #/#tem

4#e of nitro&en a# fire prote+tion #/#tem for the fir#t time in NTC

4#e of f'/ a#h .ri+$# in +on#tru+tion of a'' .ui'din

Project Profile:

Appro-ed Capa+it/ > 9333 MW ( J 233 MW)

!o+ation > ARA"ADA MANDA!, "ISAHAATNAM

DIST% A

;ue' Sour+e > MAHANANDI COA! ;IE!DS,

TA!CHER,

ORISSA

Appro-ed roe+t Co#t > R# 1?23% :IC !oan and Interna' Re#our+e#

;ue' Re=uirement > 2%38 MI!!ION TONNES ER ANN4M

DM Water Sour+e > WATER ;ROM FE!!4R4 CANA!

Seet Water Re=uirement > ?333 M1Hr

Coo'in& Water Sour+e > SEA WATER ;ROM :AF O; :ENGA!

CW Re=uirement > 6933 M1Hr

Main Contra+tor > MS :HE!

oer E-a+uation > A TRANSCO ("ia a'pa$a):enefi+iar/ State > ANDHRA RADESH

9


18/23


Converion of C!e"ic#l Ener$% to Electric#l Ener$%&

Initia''/ the +oa' i# .rou&ht throu&h rai'a/ a&on# from Ta'+her Coa' ;ie'd#

and i# un'oaded at the Tra+$

Hopper in the +oa' hand'in& p'ant

here the add'e ;eeder hi+h

feed# the +oa' onto the +on-e/or

.e't% The +on-e/or .e't ta$e# the

+oa' throu&h meta' dete+tor# and

ma&neti+ #eparator# and to remo-e

an/ unanted materia' in the +oa'%

The +oa' then +ru#hed in the

+ru#her# to the #i0e of 3mm%

;rom there, the +oa' i# fed to the

+oa' .un$er# at the .oi'er#% There

are 97 #et# of +oa' .un$er# (Nine for ea+h .oi'er)%

;rom the .un$er#, +oa' i# pa##ed into +oa' mi''#, hi+h i# pu'-eri0ed +oa' i#

made into fine poer% ;rom here, +oa' i# mi*ed ith air and i# for+ed into the .oi'er

from four #ide# ith the he'p of for+ed drau&ht fan#% In#ide the :oi'er, the +oa' i#

fired and a .a'' of fire i# formed% Thi# i# a ater tu.e .oi'er #o de5minera'i0ed ater

f'o# throu&h e+onomi0er, .oi'er drum and &oe# to .ottom rin& header and there it i#

di-ided to a'' the four #ide# throu&h tu.e# in#ide the .oi'er to the furna+e and heat i#

tran#ferred +on-ertin& ater into #team% Thi# #team and ater mi*ture i# a&ain ta$en

to the .oi'er drum here the #team i# #eparated and pa##ed throu&h #uper heater and i#

fir#t pa##ed throu&h H Tur.ine and then after re5heatin&, it i# pa##ed throu&h I

Tur.ine and then ! Tur.ine% Water fo''o# the #ame path% A'' the tur.ine# are

mounted on the #ame #haft and are me+hani+a''/ +oup'ed to the &enerator% The

&enerator +on-ert# the me+hani+a' ener&/ to e'e+tri+it/%

The #team after pa##in& the ! Tur.ine i# fed to +onden#er here it i#

+onden#ed u#in& the #ea ater% The +onden#ate i# #tored in the Conden#ate Stora&e

97


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Tan$% The +onden#ed ater i# pa##ed throu&h e+onomi0er and fina''/ fed to the

.oi'er% The #ea ater i# u#ed for the +oo'in& purpo#e in +oo'in& toer#%

;'ue &a#e# from the furna+e are e*tra+ted ./ indu+ed draft fan% The f'ue &a#e#

emit their heat ener&/ to -ariou# #uper heater, air preheater#, and e+onomi0er and

fina''/ pa## throu&h the ES here the a#h parti+'e# are +o''e+ted and mi*ed ith

ater to form #'urr/ and i# pumped to a#h pond%

Thi# i# the pro+e## of +on-er#ion of therma' ener&/ into E'e+tri+a' Ener&/,

hi+h i# underta$en at NTC5Simhadri

The ho'e pro+e## of produ+tion of poer i# +'a##ified into>

9% Coa' Hand'in&

% Steam Generation

1% C/+'e#

8% Tur.o Generator

2% A#h Hand'in&

?% Tran#mi##ion

COAL HANDLIN'

Coa' Hand'in& Department o++upie# the maorit/ area at NTC%It# dut/ i# to

+o''e+t the +oa' from a&on# and de'i-er to the :oi'er #e+tion% The maor #upp'/ of

+oa' to the p'ant i# from Ta'+ her and I: "a''e/ +oa' mine# in Ori##a% Coa' i# a'#o

imported from Indone#ia a# and hen re=uired% The a-era&e +on#umption of +oa' i#

173 tone# per hr% per .oi'er of 233MW i%e%, appro*imate'/ 693 tone# per da/ per

.oi'er%

There are man/ au*i'iarie#, the/ are>

A% Tra+$ Hopper

:% add'e ;eeder

C% Meta' Dete+tor#

D% In5'ine Ma&neti+ Separator#(I!MS)

96


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E% Cru#her#

;% Sta+$er Re+'aimer

G% Tran#fer oint#

A% Tr#c( Ho))er& Tra+$ Hopper i# u#ed to +o''e+t +oa' from the Rai'a/

Wa&on# here% Here the

a&on# +ome dire+t'/ on to

the Tra+$ Hopper and the

+oa' i# +o''e+ted in the

hopper ./ openin& the

.ottom door# of the

a&on# ./ -a+uum re'ea#e

#/#tem% Thi# i# a -er/

effi+ient and redu+e# manpoer%

:% P#**le Fee*er&add'e ;eeder# are u#ed to 'oad the +oa' +o''e+ted in the

Tra+$ Hopper on the +on-e/or .e't% Thi# feeder +ontain# a rotatin& padd'e hee'

hi+h ./ rotatin& pu#he# the +oa' onto the .e't% Thi# i# a rotator/ rai' mounted

t/pe feeder ith a hee' diameter of 1% meter#% There are a tota' of 8 feeder#

ha-in& a tota' +apa+it/ of 933 THour.

C% Met#l Detector&The/ are u#ed to dete+t an/ meta' #u.#tan+e# in the +oa'

that i# +arried ./ the +on-e/or .e't% The/ are e'e+troni+ +oi' t/pe dete+tor# and

the/ dete+t ferrou# and non5ferrou# materia'#% There are a tota' of 8 dete+tor#%

D% In Line M#$netic Se)#r#tor +ILMS,& Thi# i# u#ed to #eparate an/

meta' #u.#tan+e pre#ent in the +oa'% There a tota' of 8 ma&neti+ #eparator#%

E% Cr-!er&The +ru#her# are a'#o +a''ed Rin& Granu'ator#% The/ are u#ed to

+ru#h the +oa' hi+h i# of irre&u'ar #i0e# to a #tandard #i0e i%e% the +oa' of 23mm

ran&e #i0e i# +ru#hed into 3mm#i0e% There are 8 +ru#her# of 9333 THour

+apa+it/% oer +on#umed i# a.out 2?3 W%There i# a rin& hammer of

dimen#ion# 983 * 6 * 113 mm made of Mn #tee'%

3


21/23


;% St#c(er Recl#i"er& The/ are u#ed hen it i# ne+e##ar/ to 'oad the +oa'

onto the +on-e/or dire+t'/ from the +oa' depo#it#% Thi# +on#i#t# of hu&e rotatin&

.u+$et t/pe hee' hi+h i# rotated ./ u#in& #=uirre' +a&e motor#% The/ are

unidire+tiona'% Ea+h #ta+$er ha# 7 .u+$et# ith a hee' diameter of


22/23


STEAM 'ENERATION

Steam &eneration +on#i#t# of the fo''oin& +omponent# a# fo''o# and it i#

.a#ed on Ran$ine +/+'e hi+h i# a'#o #hon .e'o%

R#n(ine C%cle&The fi& .e'o i# #e'f e*p'anator/ a# at ea+h and e-er/ point a'' are

mentioned%

A# the area under Ran$ine +/+'e in+rea#e# the or$ done in+rea#e# #o the

effi+ien+/ of the p'ant in+rea#e# .ut there i# a pra+ti+a' 'imit too

Criti+a' point i# rea+hed in +a#e of #uper +riti+a' .oi'er# here there i# no need

of drum for #team #eparation


23/23


In the fo''oin& #e+tion e i'' de#+ri.e the +omponent# in-o'-ed in the

produ+tion of #team main'/ :oi'er a# fo''o#%

A. /oiler &

A .oi'er i# a p'a+e here the heat produ+ed due to .urnin& of +oa' in the

furna+e i# u#ed to

+on-ert the feed ater

into #team% There are

different t/pe# of

.oi'er# that +an .e

u#ed dependin& on

the app'i+ation% In

NTC5 Simhadri,

there are to ater

tu.e .oi'er unit#

manufa+tured ./

:HE!%The/ furna+e

-o'ume i# a.out

9?88 C Meter# and

the temperature in#ide the .oi'er i# a.out 833LC%Water mu#t f'o throu&h the heat

a.#orption #urfa+e of the .oi'er in order that to .e e-aporated into #team% In drum t/pe

unit# the ater i# +ir+u'ated from the drum throu&h the &eneratin& +ir+uit# and .a+$ to

the drum throu&h don +omer# at a temperature #'i&ht'/ .e'o #aturation temperature%

The .oi'er i# di-ided into three 0one# name'/ Radiation 0one, +on-e+tion 0one and

+ondu+tion +on-e+tion 0one%

9% Radiation 0one > endent(;SH)

% +on-e+tion 0one > Reheater and 'atent #uper heater(;SH)

1% +ondu+tion +on-e+tion 0one > rimar/ #uper heater(!TSH)

E+onomi#er

overall proj

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