CW SYSTEM..

CIRCULATING WATER SYSTEM INTRODUCTION In the the ther therma mall cycl cycle, e, the the cond conden ense ser r s a !heat sn"# $here the %n%tl&ed heat ener'y s re(ected) re(ected) The system system n $hch $ater *ed to the condenser that carres the re(ected heat to the cooln' to$er and o+erates n a closed cycle s named as crc%latn' $ater system)

UNCTIONS O CIRCULATING WA WATER SYSTEM The +rmary *%ncton o* the crc%latn' $ater syst system em s to cond conden ense se the the ee-ha ha%s %stt stea steam m o*  t%r. t%r.n ne e .y the the remo remo/a /all o* ts ts late latent nt heat heat o*  condensaton n the condenser) condenser) It also ser/es 01

To cool the a%-lary cooln' $ater n

2late heat e-chan'ers) 31

To co cool th the l% l%.rcatn' o ol n n th the l% l%. o ol

coolers o* T%r.o4'enerator) 51

To cool the seal ol n the seal ol

coolers o* Generator) 61

To s% s%++ly th the $a $ater *o *or th the d ds+osal o*  o* 

ash)

71

To meet the $ater re8%rement o* re

Ser/ce and M%ls9re systems)

DESCRI2TION O T:E SYSTEM The crc%latn' $ater +%m+ ho%se has totally e'ht crc%latn' $ater +%m+s)

T$o

+%m+s are needed to s%++ly crc%latn' $ater *or each %nt)

T$o addtonal +%m+s are "e+t

as stand.y *or all the three %nts) The cold crc%latn' $ater ;o$n' *rom the .asn o* cooln' to$er s d/erted to a +ond called !ORE d/sons n the scale +ro/ded) Cold4$ater t%nnel ta"es the cold $ater to condenser o* sn'le %nt) The same t%nnel can

also 'et the $ater *rom the stand.y +%m+, $hch

s

common

*or

t$o

%nts)

In

the

dschar'e ++e o* each +%m+, an a%tomatc ar releasn'

c%m

/ac%%m

.rea"er

/al/e

s

+ro/ded) The cold4$ater t%nnel s +ro/ded $th manholes near the +%m+ ho%se and near the %nt) The cold4$ater t%nnel near the condenser d/des nto t$o se+arate channels to s%++ly $ater *or .oth $ater .o-es o* the condenser) A%-lary crc%latn' $ater .ooster +%m+ dra$s the crc%latn' $ater *rom the condenser 4A sde nta"e channel)

A%-lary crc%latn'

$ater .ooster +%m+ .oosts %+ the crc%latn' $ater +ress%re and s%++ly t to +late ty+e heat e-chan'ers +ro/ded *or cooln' the a%-lary cooln'

$ater)

The

hot

crc%latn'

$ater

ret%rnn' *rom the +late heat e-chan'ers (ons $th o%tta"e channel o* 4A sde) rom the condenser 4< sde nta"e channel, the crc%latn' $ater s dra$n .y l%. ol cooler .ooster +%m+ to s%++ly the cooln' $ater o*  a.o%t 5>> m 5?hr to l%. ol coolers o* T%r.ne

and seal ol coolers o* 'enerator)

The hot

$ater ret%rnn' *rom the a.o/e coolers s %tl&ed *or the ds+osal o* ash)

Also a drect

lne *rom the o%tta"e channel o* condenser 4< sde s ta"en to s%++ly $ater @>> m 5?hr1 to ash ds+osal +%m+ ho%se) The

t$o hot $ater channels *rom the

condenser

(on a common hot $ater t%nnel

o%tsde the t%r.ne hall) :ot $ater t%nnel carres the hot crc%latn' $ater to the cooln' to$er) Manholes $th +ro/son o* ar /ents are +ro/ded n the hot $ater t%nnels also) rom the hot $ater t%nnel, t$o steel ++es 9nally ta"e the hot $ater to .oth sectons o*  dstr.%ton system o* nat%ral dra%'ht cooln' to$er) The ncomn' nat%ral ar n the cooln' to$er

cools

the

hot

$ater

and

the

cold

crc%latn' $ater ;o$s do$n to the .asn) rom the .asn, the cold $ater ;o$s to the *ore .ay thro%'h o+en channel)

lter screens are

+ro/ded at the o%tlets o* the .asn to 9lter the de.rs)

MABE U2 SYSTEM E/en tho%'h the crc%latn' $ater s on closed

cycle,

the

losses

occ%r

e/a+orat/e cooln' and the dr*t)

d%e

to

A+art *rom

the a.o/e, the $ater %tl&ed *or the ds+osal o* ash and 9re ser/ce s not reco/era.le) In order to ma"e %+ the losses, an art9cal la"e o* ca+acty 0,>,>7 m 5 s located n the north $est o* the +o$erho%se) It rece/es ts $ater s%++ly *rom Mnes4II thro%'h t$o ++elnes) rom the la"e, the ma"e %+ $ater s added to the *ore .ay .y 'ra/ty thro%'h a lne $th a le/el control /al/e) The same ma"e %+ lne can also rece/e the $ater drectly *rom the t$o ma"e %+ lnes @*rom Mnes4II1)

CIRCULATING WATER 2UM2 The crc%latn' $ater +%m+ s o* sn'le sta'e, /ertcal, m-ed ;o$ +%m+ o* ca+acty

0,7>> m5?hr at the del/ery +ress%re o* 0)7 B'?cm3) The m+eller s .elo$ the $ater le/el n the

*ore

condton)

.ay

and

t

s

al$ays

n

+rmed

Each +%m+ conssts o* the .o$l

assem.ly $th m+eller, the col%mn assem.ly, the lne sha*t and the motor s"rt)

> m5?hr)

> S+eed)

66 r+m)

> Sh%t oF head)

67 MWC)

0> N%m.er o* sta'es) 2ro/son to ta"e 00 %+ the end thr%st o* the +%m+ rotor)

One) ertcal, tltn' +ad thr%st and '%de .earn' at +%m+ to+ $th ol .ath l%.rcaton)

>7 Ty+e o* the +%m+)

) B'?cm3)

Lne sha*t '%de .earn's) a1 No o* '%de 05 .earn's) .1 Ty+e) c1 L%.rcaton) Ty+e o* lne sha*t 06 co%+ln')

 ENOSTOS .earn' $th .ron&e slee/e) Sel* $ater l%.rcaton) lan'ed R'd)

MOTOR >0 Man%*act%rer .y

>3 Ty+e) >5 olta'e)

KYOTI LIMITED, :& /ertcal sold sha*t s8%rrel ca'e nd%cton motor CUCACA  003>) ) B)Y  

>6 R2M

66

>7 N%m.er o* +oles)

03

> Blo$att ratn')

06>> BW)

> Ins%laton class)

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