inlet chilling vs. no chilling, evap cooling, & inlet fogging

7/21/2019 Inlet Chilling vs. No Chilling, Evap Cooling, & Inlet Fogging

1/37

To Inlet Condition a Gas Turbine orNot, That is the Question

&Discussion on Plant Performance

Testing

By,

Gary Bush & Azim JivanBush Power Group LLC.


2/37

Topics covered

Opions !or in"e air condiionin#

$eaher Pro!i"e

Thermodynamic %ode"

Per!ormance Ana"ysis

conomic Ana"ysis


3/37

$hy 'n"e Air Condiion(

One o! he many opions avai"a)"e !or

increasin# oupu o! a Power P"an

Oher Opions !or Boosin# Power are*

+upp"emenary !irin# in he -G

+$aer or eam 'n/ecion !or Power

Au#menaion+Pea0 1irin#


4/37

Opions !or 'n"e Air

Condiionin# vaporaive Coo"in#*

educin# he emperaure o! he air sream hrou#h waer

evaporaion. ner#y is drawn !rom he air sream o conver

waer !rom "i2uid o vapor. This resu"s in a more dense and

humid air. The emperaure drop is "imied )y we )u")

emperaure.

Types o! vaporaive Coo"in# are*

+vaporaive Coo"er 3weed4honeycom) medium5

+1o##in# 3sprayin# o! u"ra4!ine mis5

+Oversprayin# 3vaporaive 'nercoo"in#5


5/37

Opions !or 'n"e Air

Condiionin# 3cond.5 'n"e Air Chi""in#*

Coo"s he air o emperaures "ower han he we

)u") emperaure. $hen co"d air reaches sauraionpoin hen waer sars o condense !rom he air

sream.

Types o! 'n"e Chi""in# are*

+6irec Chi""ers 3%echanica" and A)sorpion ypes5

+Therma" ora#e 3Creae ice in o!!4pea0 hours o chi""air durin# pea0 hours5


6/37

ome Pros and Cons

vaporaive Coo"in#

+ Pros*

Low parasiic "oads Lower cos han chi""ers

+ Cons* Coo"in# "imied )y we

)u") emperaure ande!!eciveness o! coo"in#

!or he ype se"eced

'n"e Chi""in#

+ Pros*

Coo"in# is no "imied )y we)u") emperaure. Air can )e

coo"ed down o 78 de#1 and

98: -.

Can provide a consan hi#h

p"an capaciy

+ Cons* -i#h parasiic "oads

-i#her cos han evaporaive

coo"in# opions


7/37

$eaher Pro!i"e

One o! he si#ni!ican iems o! in!ormaion

re2uired !or eva"uaion is he weaher pro!i"e o! he

power p"an "ocaion. The weaher pro!i"e provides )ins wih dry )u")

emperaure, coinciden re"aive humidiy or we

)u") and he correspondin# annua" num)er o!

hours a he #iven emperaure ran#e.

-e"ps o deermine he am)ien desi#n condiions

!or he p"an


8/37

$eaher Pro!i"e !or -ouson3Coinciden e"aive -umidiy5

Houston, TX. Annual Temperature Profile with Coincident Relative Humidity

(Data from ational Climatic Data Center!

30

5

!0"

!#"

$05$3!

3!%

3535

50

%

5#3

!

5!!

3$

3"0

33

3!0

$#5$"

$5#$5#

$3!$!3$05

!"#!#0!!

!35!!#

%!

5##3"30

!$!$

$5

%5$

55%

5"

#!#

#""!"!"$

#%#%"0#"######"#"#"#"#"###"#%

"3"!

"5""3"$"$"!

0

!

$

3

5

#

%#%5%3%!"%"#"5"3"!#%###5#3#!%#53!5%5#55535!%#53!3%3#35333!$%$#$5$3

Am"ient Dry #ul" Temperature, $

0

!0

$0

30

0

50

0

#0

"0

%0

!00

CoincidentRelativeHumidity(%!

'ours()r

Coincident *'


9/37

$eaher Pro!i"e !or -ouson3Coinciden $e Bu")5

Houston, TX. Annual Temperature Profile with Coincident &et #ul"

(Data from ational Climatic Data Center!

30

5

!0"

!#"

$05

$3!

3!%

3&535&

&50

&%&

5#3

!

5!!

&3$

3"0

33

3!0

$#5$"&

$5#$5#

$3!$!3

$05!"#

!#0!!

!35!!#

%!

5

3"30

!$!$

#"#########5##$

#!%

#5

3!

5%5#

5553

5!&%

&

&&&$

&03"

335

333!$%

$#$5

$&$$

0

!

$

3

&

5

#

%#%5%3%!"%"#"5"3"!#%###5#3#!%#53!5%5#55535!&%&5&3&!3%3#35333!$%$#$5$3

Am"ient Dry #ul" Temperature, $

0

!0

$0

30

&0

50

0

#0

"0

%0

!00

Coin

cident&et#ul",

de'$

'ours()r

Coincident +et ,ulb


10/37

Thermodynamic %ode"

The hermodynamic mode" is creaed usin#

GTPro and GT%aser so!ware !rom

Thermo!"ow. GTPro is used o desi#n he p"an a he

se"eced desi#n condiions

GT%aser is used o simu"ae per!ormanceo! he p"an a o!!4desi#n condiions


11/37

'n"e Condiionin# Opions

va"uaed vaporaive Coo"in#

+ 3;8: !!eciveness. Add O o GT 'n"e Losses5

1o##in#+ 398: !!eciveness. ?"ra !ine drop"es. Add @.8=->O o GT 'n"e

Losses5

'n"e Air Chi""in#+ 3"ecric Chi""er wih is own Aui"iary Coo"in# Tower. ized o

coo" in"e air o 8@ de#1. Add O o GT 'n"e Losses5


12/37

Assumpions

A"" mode"s creaed !or #reen!ie"d insa""aion.

The -G, eam Tur)ine and he Coo"in#

ysem are sized !or he #iven in"e aircondiionin# opion

A"" per!ormances are !or new and c"ean p"an.

1ue" used is mehane on"y. o supp"emenary !irin# in he -G

P"an runnin# a )ase"oad


13/37

P"an Con!i#uraion

Com)ined Cyc"e*


14/37

P"an Con!i#uraion cond.

$e %echanica" dra! Coo"in# Tower

1ue" o he #as ur)ine heaed o DE8 de#1.

6esi#n Condiions are D de#136B5,E;.;de#1 3$B5, ;


15/37

GT -./T* !01% .2im i4an

!3# 0!!"$003 !#606$$ file7C68-) D9C:-NT/8.;I-8PG8./-8T'*-9


16/37

GT -./T* !01% .2im i4an

!3# 0!!"$003 !#60563# file7C68-H Documents8.2im8PG8./-8Thermoflo>8CC >ithout P.C8G#er $#5"# ?+='@ 'eat *ate $0 T:(?+h

ABAsia, TB /TQ:I

!E G #$!


17/37

GT -./T* !01% .2im i4an

!3# 0!!"$003 !#606! file7C68-H Documents8.2im8PG8./-8Thermoflo>8CC >ithout P.C8G#


18/37

GT -./T* !01% .2im i4an

!3# 0!$0$003 0%60$6!" file7C6 8-) D9C111#


19/37

Per!ormance Ana"ysis

P"an oupu is he main economic !acor

durin# pea0 power demand period

P"an e!!iciency is he main economic !acordurin# non4pea0 periods

Thus need o eva"uae cumu"aive

per!ormance and economic reurns over awide ran#e o! emperaures raher han desi#n

and hi#h am)ien emperaures


20/37

Per!ormance Ana"ysis cond.

imu"ae he per!ormance o! he p"an wih

di!!eren in"e air coo"in# opions a each

emperaure )in shown on he annua"weaher pro!i"e

Ca"cu"ae he %e#awa hours, 1ue" and

$aer Consumpion !or each emperaure)in o #e he annua" cumu"aive oa"s


21/37

Compressor nlet Temperature vs. Am"ient Temperature for Different nlet Air Coolin'

)ptions

(#ase Case has o nlet Air Conditionin'!

$0

30

0

50

0

#0

"0

%0

!00

$0 30 0 50 0 #0 "0 %0 !00

Am"ient Temp

de'$

4aA1 Cooling


22/37

et Power vs. Am"ient Temperature for Different nlet Air Coolin' )ptions


$$0,000

$30,000

$0,000

$50,000

$0,000

$#0,000

$"0,000

$0 30 0 50 0 #0 "0 %0 !00

Am"ient Temp

*&

4aA1 Cooling


23/37

Comparison of $uel Consumption vs. #ase Case for Different nlet Air Coolin' )ptions


01%"

!100

!10$

!10

!10

!10"

!1!0

!1!$

!1!

$0 30 0 50 0 #0 "0 %0 !00

Am"ient Temp

4aA1 Cooling


24/37

Heat Rate vs. Am"ient Temperature for Different nlet Air Coolin' )ptions


,$$0

,$0

,$0

,$"0

,300

,3$0

,30

,30

,3"0

,00

,$0

$0 30 0 50 0 #0 "0 %0 !00

Am"ient Temp

#tu+*&h(,

H-!

4aA1 Cooling


25/37

Plant Auiliary oad plus Transformer osses vs. Am"ient Temperature for Different nlet Air

Coolin' )ptions


,000

5,000

,000

#,000

",000

%,000

!0,000

!!,000

$0 30 0 50 0 #0 "0 %0 !00

Am"ient Temp

*&

4aA1 Cooling


26/37

Difference of Pota"le /a*eup &ater $low from the #ase Case vs. Am"ient Temperature for

Different nlet Air Conditionin' )ptions


5

0

5

!0

!5

$0

$5

30

$0 30 0 50 0 #0 "0 %0 !00

Am"ient Temp

*pph

4aA1 Cooling


27/37

Difference of /e'awatt Hours from the #ase Case vs. Am"ient Temperature for Different nlet

Air Conditionin' )ptions


!000

0

!000

$000

3000

000

5000

000

#000

$0 30 0 50 0 #0 "0 %0 !00

Am"ient Temp

/e'awattH

ours

4aA1 Cooling


28/37

conomic Ana"ysis

"ecriciy rae srucure

1ue" cos srucure

$aer cos

O&% Coss

Capaciy Paymens

6e#radaion o! he p"an

Ta 'mp"icaions


29/37

Assumpions made !or curren

conomic Ana"ysis* "ecriciy ae rucure*

J(-+h TemAerature range

J"0 %0< and abo4e

J50 "0< %0