Siemens Industrial Gas Turbines
as the Core of High Efficient CHP
Plants
Jesús de la Fuente, SIEMENS Energy
Copyright © Siemens AG 2009. All rights reserved.
Agenda
ƒ Introduction: Clean, Green & Sustainable Power Generation
ƒ Siemens Industrial Turbines, main figures and facts
ƒ Boosting CHP Efficiency: improving economics & lowering emissions
ƒ Practical cases and experiences in CHP recent projects
ƒ Conclusions
Page 2
April 2010
Copyright © Siemens AG 2009. All rights reserved.
Energy Sector
Answers for the environment
Power
from the Sun
Wind
Power
Are alternative energies
the only alternative ?
Over 40 double
casing steam
turbines supplied
for Thermosolar
Power Plants
Page 3
3,6 MWe
Turbines for onshore and offshore
applications
April 2010
Copyright © Siemens AG 2009. All rights reserved.
Energy Sector
Answers for the environment
Power
from the Sun
Wind
Power
Fosile
Power, CCPP
Combined
Heat & Power
Carbon Capture
& Storage
Factory
~
High Efficient
double casing
Steam turbines for
Thermo-solar
Power Plants
3,6 MWe Wind
Turbines for onshore and offshore
applications
Enhancing CCPP
efficiency trough
Utility Gas
Turbines and
Steam Turbines
performance
Efficiency 60%
Page 4
April 2010
Gas Turbines and
Steam turbines to
boost CHP Efficiency
for Industrial
Applications
Efficiency 90%
CO2 IG Turbocompressors
for Carbon
Capture and
Storage for
Fossil fuel fired
Power Plants
Copyright © Siemens AG 2009. All rights reserved.
Energy Sector
Combined Heat & Power – Industrial Turbines
SGT700 Gas Turbine
Gas Turbines (5 up to 47MWe)
ƒ - Heavy duty Industrial Gas Turbines
ƒ - High performance and availability based in proved
designs
ƒ - Excellent balance: electric power/steam raising
capability
SST800 Steam Turbine
Steam turbines (up to 250MWe)
ƒ - High efficiency
ƒ - Flexibility to fit each industrial process
ƒ - Heat Balance optimization
Page 5
April 2010
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Energy Sector
Siemens GAS TURBINES range
Figures in net MW
375
SGT5-8000H
SGT5-4000F
287
SGT6-8000H
266
SGT6-5000F
SGT5-2000E
SGT6-2000E
SGT-800
SGT-700
SGT-600
SGT-500
SGT-400
SGT-300
SGT-200
SGT-100
Page 6
198
168
113
47
31
25
18
13
8
7
5
April 2010
SIEMENS Industrial
Gas Turbines
CHP Applications
SGT400 Gas Turbine
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Energy Sector
Environmental Effects of combustion engines
Solutions are available to minimize the impact of power generation
Pollutant
Effect
Method of Control
CO2
Greenhouse gas
CHP EFFICIENCY
CO
Poisonous
DLE System
SOx
Acid rain
Fuel treatment
NOx
Ozone depletion, Smog,
DLE System
Greenhouse gas
Page 7
Hydrocarbons
Poisonous
UHC
Greenhouse gas
Smoke
Visible pollution
April 2010
DLE System
DLE System
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Energy Sector
Gas Turbine Selection & CHP Efficiency
Primary Energy saving
Steam raising capability @10 bar - unfired
100
90
80
70
Gas Turbine Selection Criteria
-Select the Gas Turbine that better fits the
heat demands of the plant
ton/h
60
50
40
30
20
10
0
SGT100 SGT200 SGT300 SGT400 SGT500 SGT600 SGT700 SGT800
5,2MWe 6,75MWe 7,9MWe 12,9MWe 18MWe
Page 8
April 2010
25MWe 31,2MWe 47MWe
Copyright © Siemens AG 2009. All rights reserved.
Energy Sector
Gas Turbine Selection & CHP Efficiency
CHP efficiency brings a better income when exporting electric power
More efficient CHP installations are justified by
economical reasons
REE Æ
€
CHP QUALITY INDEX
Efficiency bonus on top of the CHP Premium (€/MWh)
REE =
18
16
14
12
€
E
V
Q−
0,9
> 0,59
10
EFFICIENCY BONUS - €
8
6
4
⎞
⎛ 1
1
⎟⎟·C gas
Bonus Eff = 1,1·⎜⎜
−
⎝ REEmin REE ACTUAL ⎠
2
0
0,59
0,64
0,69
0,74
0,79
0,84
0,89
0,94
REE (Efficiency quality index)
Page 9
April 2010
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Energy Sector
Gas Turbine Selection & CHP Efficiency
Combined cycle with extraction – Paper Mill in Northern Spain
Cool Exhaust
Gas
Water return
from Process
Condenser
Water Return
to WHRB
Gas Fuel
Q2
Q1
Air Inlet
Steam
Exhaust to
condenser
Steam Supply
HP
LP
WHRB
Air
REE =
E1 + E2
(Q1 + Q2 ) −
E2
~
EficiencyCHP =
V
0,9
(E1 + E2 ) + V
Q1 + Q2
~E
1
V
Factory
Page 10
April 2010
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Energy Sector
Gas Turbine Selection & CHP Efficiency
Combined cycle with extraction – Paper Mill in Northern Spain
138ºC
REE =
EficiencyCHP = ( E + V ) / Q = 81%
400ºC, 40 bar
0,8MW
1,3 to 2,2 MWe
571ºC
553ºC
36,3MW
HP
38,5 Kg/s
13ºC
~
Air
SGT 400 Gas
Turbine
13,8
= 74%
16,5
37,1 −
0,9
~
LP
TWIN-CFR
Steam Turbine
12,5MWe
LP steam
16,5MW
7 bar
Factory
11 bar
Page 11
April 2010
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Energy Sector
Gas Turbine Selection & CHP Efficiency
Select the right technology
555ºC
38,9 kg/s
GAS TURBINE THERMAL FIT
12.9MWe
35% E. Eff.
SUPPLEMENTARY FIRING
555ºC
38,9 kg/s
Page 12
April 2010
GT EXHAUST HEAT
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Energy Sector
Gas Turbine Selection & CHP Efficiency
Typical Application where the SGT400 provides outstanding CHP efficiency
General data – CHP (COMBINED CYCLE WITH
EXTRACTION FOR A PAPER MILL APPLICATION
Estimated Electricity price
Fuel price
Process steam value
Assumed Operation mode, base load
Cogen quality Index REE
Premium
Electricity base price (Tariff+reactive power)
EUR/MWh
EUR/MWh
EUR/MWh
h/a
%
EUR/MWh
EUR/MWh
84,48
25,00
27,78
8.000
74
9,483166881
75
MW
kJ/kWh
MW
MW
MWh/a
MWh/a
MWh/a
MWh/a
MWh/year
12,500
10.435
1,315
13,815
110.520
160.000
320.348
6.640
326.988
EUR/year
EUR/year
EUR/year
EUR/year
EUR/year
9.337.080
4.444.444
8.174.696
750.000
4.856.828
REE =
13,8
= 74%
16,5
37,1 −
0,9
EficiencyCHP = ( E + V ) / Q = 81%
Operation data
Electrical output GT, net, site cond
GT heat rate, net, site cond.
Electrical output ST, net, site cond
Plant electrical output
Plant electrical production
Process steam generation
Fuel consumption, GT
Fuel consumption, duct burner
Total fuel consumption
⎛ 1
1
BonusEff = 1,1·⎜
−
⎜ 0,59 0,74
⎝
= 9,5€ / MWh
⎞
⎟·25 =
⎟
⎠
100% Related to plant
efficiency
Economical data
Electricity income/deferred cost
Process steam value
Fuel cost
Maintenance costs
Operating income inc steam production
Page 13
April 2010
≈ 1.000.000€ / Year
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Energy Sector
Conclusions
Siemens Gas Turbines as the core of High Efficient CHP plants
ƒ Siemens Industrial gas turbines are an economical and high quality source of power and heat
ƒ Large Cost savings with shorter payback periods
ƒ Large reduction in use of fossil fuel, what reduces carbon profile
ƒ Minimum NOx emissions due to a well proven DLE system
ƒ Plant flexibility with excellent unfired/fired performance as well as part load operation
ƒ Long expected plant life and cost efficient maintenance due to the robustness of heavy duty
Industrial Turbines
ƒ Cleaner Energy is more profitable
CHP is a good alternative
Page 14
April 2010
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Energy Sector
Thank you for your attention
Jesus de la Fuente
SIEMENS Energy
Marketing & Sales, Industrial Power Turbines
Tel: +34 91 514 79 37
E-mail: jesus.fuente@siemens.com
Page 15
April 2010
Copyright © Siemens AG 2009. All rights reserved.
Energy Sector