master thesis remena program dispatchable … · by: mahmoud hosny ibrahim mahrous (batch 6)...
TRANSCRIPT
BY : MAHMOUD HOSNY IBRAHIM MAHROUS (BATCH 6)
SUPERVISORS: PROF. DR. ADEL KHALIL (UCAI)
PROF. DR. SC- TECHN. DIRK DAHLHAUS (UKAS)
DIPL.- ING. MASSIMO MOSER (DLR)
EXAMINERS: PROF. DR. ADEL KHALIL
PROF. DR. MOHAMED EL-SOBKI
PROF. DR. SAYED KASSEB
DISPATCHABLE RENEWABLE POWER
TECHNOLOGIES THROUGH THE INTEGRATION
OF [PUMPED] THERMAL ENERGY STORAGE
MASTER THESIS – REMENA PROGRAM
6 / 9 / 2015
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST) Model
Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
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1. Motivation and Intention
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The need for Electricity
Pollution
Global warming.
Bridge temporal and geographical
gaps between energy supply and
demand
Dispatchable Renewable Power
Technology
Source: Smart Energy for Europe Platform GmbH
(SEFEP): Technology Overview on Electricity
Storage; June 2012.
Flexibility requirements in the electricity grid © RENAC
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST) Model
Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
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2. INTRODUCTION
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Energy Storage Demand Supply
• Store excess energy
• Transition to a power system with high shares of fluctuating renewables bridge
the physical distance and the time difference between supply and demand
BLUE MAP – ENERGY STORAGE CAPACITY WORLDWIDE (2005-2050)
6/9/2015 6 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Source: IEA. Prospects for Large Scale Energy
Storage in Decarbinaisation Power Grids. Paris:
OECD/IEA : s.n., 2009.
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST) Model
Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
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3. AIM OF WORK
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Batteries
Pumped Hydro-
Storage (PHS)
Compressed Air
Energy Storage
(CAES)
Pumped Thermal
Electricity
Storage(PTES)
Energy Storage
Technologies Drawbacks
Low Energy
Density
Geographical
Constraints & Bad
Effect on the
Environment
Technically : ηRT
(CHEST)
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST) Model
Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
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4. ENERGY STORAGE TECHNOLOGIES
10 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Energy Storage
Technologies Application
Conventional
Resources
Renewables
Common Name Discharge Time Application
Power Quality Seconds to Minutes Frequency Regulation
Bridging Power Minutes to
approximately 1 hour
Contingency Reserves,
Ramping
Energy Management Hours Load Leveling, and
Firm Capacity
Source: Paul Denholm, Erik Ela, Brendan Kirby, and Michael Milligan.
The Role of Energy Storage with Renewable Electricity Generation.
s.l. : National Renewable Energy Laboratory- NREL, January 2010.
Technical Report. NREL/TP-6A2-47187.
11 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Energy
Manage-
ment
Bridging
Power
Power
Quality
Source: Paul Denholm, Erik Ela, Brendan Kirby, and Michael Milligan.
The Role of Energy Storage with Renewable Electricity Generation.
s.l. : National Renewable Energy Laboratory- NREL, January 2010.
Technical Report. NREL/TP-6A2-47187.
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Storage System
Design
Cost
(LEC) Efficiency
(ηRT )
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST)
Model Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
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5. CHEST – MODEL SETUP
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Simplified scheme of the CHEST concept
Source: W.D. Steinmann. The CHEST concept for facility scale thermo
mechanical energy storage, German Aerospace center (DLR), Institute of
Technical Thermodynamics, Pfaffenwaldring 38-40, 70569, Stuttgart,
Germany, 8 April 2014.
General Idea
5. CHEST – MODEL SETUP
CHEST Cycles:
15 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Source: W.D. Steinmann. The CHEST concept for facility scale thermo
mechanical energy storage, German Aerospace center (DLR), Institute of
Technical Thermodynamics, Pfaffenwaldring 38-40, 70569, Stuttgart,
Germany, 8 April 2014.
Cascaded system of CHEST concept
1. Ammonia (NH3)
compression cycle works
at low temperature levels
(<100 oC)
2. Steam compression cycle
works at high temperature
levels (>100 oC)
3. Steam expansion cycle
5. CHEST – MODEL SETUP
Three Aspects :
1. Thermal Storage for Steam cycle
Minimize Entropy generation resulting from of Charging and discharging
Adiabatic System
2. Compression of Steam
16 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Cooling of compressed steam between two stages
Source: W.D. Steinmann. The CHEST concept for facility scale thermo
mechanical energy storage, German Aerospace center (DLR), Institute of
Technical Thermodynamics, Pfaffenwaldring 38-40, 70569, Stuttgart,
Germany, 8 April 2014.
5. CHEST – MODEL SETUP
17 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Comparison of volume of saturated steam related to heat of evaporation depending on saturation
temperature
3. CHEST concept depends on the electrical excess energy produced from
Wind Power
Source: W.D. Steinmann. The CHEST concept for facility scale thermo
mechanical energy storage, German Aerospace center (DLR), Institute of
Technical Thermodynamics, Pfaffenwaldring 38-40, 70569, Stuttgart,
Germany, 8 April 2014.
5. CHEST – MODEL SETUP
First Cycle: Ammonia (NH3) Compression Cycle
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Assumptions:
At inlet stage
1. Saturation pressure = 6.25
bar
2. Evaporation temperature =
10.5 oC
3. Mass flow rate = 1.0 kg/s
4. Maximum pressure = 42 bar
5. Condensation temperature =
80 oC
6. Polytropic efficiency
(compressors) = 0.90
7. Efficiency (Motor) = 0.97
Schematic diagram of the Ammonia compression cycle
5. CHEST – MODEL SETUP
19 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Tool: Ammonia table online calculator is used here to present the T-S
diagram for ammonia compression cycle http://www.ammonia-
properties.com/NH3TablesWeb.aspx
6/9/2015
5. CHEST – MODEL SETUP
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Points [kg/s] P [bar] T [oC] h [kJ/kg] W
[kW]
Q [kW] Extracted [kg/s]
From To From To From To Value Symbol
1a-1b 1 6.25 12.6 10.5 55.8 509.3 608 98.67
2a-2b 1.2895 12 27.3 30.2 88.2 523.6 640.7 150.977
3a-3b 1.6156 26 44.1 59.8 98 526.7 590.4 103.06
3d-3a 25.2 26 59.8 59.8 -365.1 526.7 1,440.75 0.1722 l
3d-2b 25.2 27.3 59.8 88.2 -365.1 640.7 154.69 0.1538 z
2d-2a 11.6 12 30.2 30.2 -480 523.6 1,294.28 0.1539 y
2d-1b 11.6 12.6 30.2 55.8 -480 608 147.424 0.1355 x
3d-2c 25.2 26 59.8 59.8 -365.1 -471.5 137.20 1.2895 1+x+y
3b-3c 44.1 42 98 80.7 590.4 -358.7 1,533.48 1.6156 1+x+y+z+l
2d-1c 11.6 12 30.2 30.2 -480 -616.1 136.1 1
1d-1a 6.25 6.25 10.5 10.5 -620.4 509.3 1129.71 1
5. CHEST – MODEL SETUP
Ammonia compression results
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Total work required for ammonia (NH3) compression process: WNH3, compress
352.71 kW
Heat energy delivered from NH3 to H2O compression cycle for evaporation of H2O at 75 °C is: QNH3toH2O
1,533.48 kW
COP NH3, Compression 4.34
5. CHEST – MODEL SETUP
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Second Cycle: Steam Compression Cycle
Assumptions:
At inlet stage
1. Saturation Pressure = 0.039
bar
2. Saturation Temperature = 75 oC
3. Mass flow rate = 1.0 kg/s
4. Maximum pressure = 110.25
bar
5. Saturation Temperature
at p max = 318.1 oC
6. Polytropic efficiency
(compressors) = 0.90
7. Efficiency (Motor) = 0.97
0C
Schematic diagram of the steam compression cycle
5. CHEST – MODEL SETUP
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Tool: The tool steam table online calculator is used here to present the
T-S diagram for steam compression cycle
http://www.steamtablesonline.com/steam97web.aspx
6/9/2015
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Stages in
[kg/s]
P
[bar]
h
[kJ/kg]
T exit
[°C]
W comp
[kW]
desuperheat
[kg/s]
Q sto
From
Liquid
[kW]
extract
[kg/s]
Q sto
From
Extract
[kW]
Points Value Symbol Value Value Symbol Value Value
1 1a 1b 180.87 m 0.0629 98.83 k 0.0608 162.59
1 1 2,815.4 160.3
2 2a 2b 202.36 l 0.0728 122.96 0 0
1.002 2.6 2,875.1 193.4
3 3a 3b 250.04 z 0.0969 173.92 0 0
1.074 7.4 2949.1 236.8
4 4a 4b 295.16 y 0.1340 247.84 0
1.171 21 3,014.6 285.1
5 5a 5b 293.59 x 0.1823 321.13 g 0.319 893.56
1.306 52.5 3,023.2 325
6 6a 6b 205.67 0 321.09 0 0
1.168 110.25 2,970.2 361.5
5. CHEST – MODEL SETUP
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5. CHEST – MODEL SETUP
Heat from desuperheating after compression stage 6 (points: 6b-6d) at (t > 361.5 °C)
296.92 kW
Heat from condensation after compression stage 6 (points: 6d-6c) at (t = 361.5 °C)
1,503.87 kW
Heat from cooling of liquid condensate (modular sensible heat storage system from sto_1 to sto_6) at (75 °C < t < 361.5 °C)
1,285.79 kW
Heat from condensation of saturated steam stored in (sto_6, sto_2) because of mass flow rates (k, g) extraction at (t = 100 °C, 263 °C)
1,056.16 kW
Total Heat to storage 4,142.74 kW
Total Compression work 1,427.72 kW
Heat required for evaporation of 1kg/s water at (p = 0.386 bar) (points: 0c-1a)
2,320.72 kW
COP Steam, Compression 2.90
Steam compression results
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5. CHEST – MODEL SETUP
Third Cycle: Steam Expansion Cycle
Assumptions:
At inlet stage
1. Maximum Pressure = 80 bar
2. Saturation Temperature = 295 oC
3. Mass flow rate = 1.0 kg/s
4. Super heated steam
temperature = 340 oC
5. Reheated steam temperature =
270 oC
6. NaNO3: Solidification
Temperature = 305 oC
7. Polytropic efficiency
(compressors) = 0.90
8. Efficiency (Generator) = 0.97
Schematic diagram of the steam expansion cycle
27 M.SC . MAHMOUD H. I. MAHROUS – REMENA
5. CHEST – MODEL SETUP
Tool: The tool steam table online calculator is used here to present the
T-S diagram for steam expansion cycle
http://www.steamtablesonline.com/steam97web.aspx
6/9/2015
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5. CHEST – MODEL SETUP
Point Work Heat
Process From To kW kW
High pressure
expansion
1 2 366.33 0
Intermediate
superheating
3 4 0 190.17
Low pressure
expansion
4 5 724.61 0
Condensation 5 6 0 1,878.75
Preheating low
temperature
6 7 0 588.35
Preheating high
temperature
7 8 0 554.4
Evaporation 8 9 0 1,441.53
Superheating 9 1 0 195.25
Points T
[°C]
P
[ bar]
h
[kJ/kg]
[kg/s]
1 340 80 2,953.9 1
2 179.9 10 2,587.5 1
3 179.9 9.7 2,777.1 0.906
4 270 2,987 0.906
5 27 0,035 2,187.1 0.906
6 113.2 0.906
7 179.9 10 762.7 1
8 295 80 1,317.1 1
9 295 80 2,758.6 1
Steam expansion results
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5. CHEST – MODEL SETUP
Steam expansion results
Total Expansion work = W Exp, tot 1,091 kW
Total Heat required/added = Q3-4 + Q6-7 + Q7-8 + Q8-9 + Q9-1 2,969.7 kW
Total heat rejected during the cycle = Q5-6 1,878.7 kW
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5. CHEST – MODEL SETUP
Combination between NH3 and H2O compression cycles
The required mass flow rate to provide the same amount of
heat from NH3 to Steam compression cycles =
QH2O, evaporate / QNH3 to H2O = 2,320.72/1,533.48
1.513 kg
The compression work in the NH3 cycle is increased from 352.71 kW to
533.78 kW
The sum of compression work in both cycles = 533.78 +
1,427.72
1,961.51 kW
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5. CHEST – MODEL SETUP
Discharging cycle
The resulting roundtrip efficiency is [Energy-out / Energy-in] *ɳGenerator
*ɳMotor = [1,521.9/1,961.51] *0.97 *0.97
73 %
The resulting Thermal efficiency is [W Total, Turbine / Q add, Storage] =
1,521.9/4,142.7
36.73 %
System Energy Balance = Q add, Storage – Q rejected, Condenser – W Total, Turbine
= 4,142.7 – 2,620.8 – 1,521.9
0
• The discharging cycle requires 2,969.7 kW heat if 1kg of steam is evaporated and provides
1091 kW work; during charging, 4,142.74 kW have been stored.
• The mass in the evaporator of the discharging cycle can be increased to
(4,142.74/2,969.7) = 1.39 kg
• Because of the increasing in mass flow rate, the mechanical work is increased from 1,091
kW to 1,521.9 kW
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Round-trip efficiencies for CHEST, PHS and CAES
80
60
73
0
10
20
30
40
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3 3.5
Ro
un
d-t
rip
eff
icie
ncy
(%
)
Round-trip efficiencies (%) for PHS, CAES and CHEST storage
technologies
Round-trip efficiency (%)
Different cases of thermal energy storage technologies
CHEST
CAES
PHS
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST) Model
Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
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6. CHEST – SENSITIVITY ANALYSIS
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Parameters Symbol
1. Steam evaporation temperature T Steam evaporation (oC)
2. Maximum cycle temperature (expansion cycle) T Max = T 1 (oC)
3. Polytropic efficiencies (compressors and turbines) ɳ c, ɳ T (%)
4. Steam pressure ratio (compression cycle) β Steam
5. Motor and generator efficiencies ɳ M, ɳ G (%)
6. Ammonia mass flow rate (compression cycle) NH3 compression (kg/s)
7. Steam mass flow rate (compression cycle) Steam compression (kg/s)
8. Steam mass flow rate (expansion cycle) Steam expansion (kg/s)
Polytropic efficiencies
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6. CHEST – SENSITIVITY ANALYSIS
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0.65 0.70 0.75 0.80 0.85 0.90 1.00
Po
wer
(k
W)
Turbine & Compressor eff (%)
Effect of polytropic efficiencies on Work and Heat
WNH3 comp T (kW)
W Steam comp T (kW)
W Steam exp T (kW)
Q NH3 to H2O (kW)
Q Steam comp T (kW)
Q Steam exp T (kW) 0.95
1.00
1.05
1.10
1.15
1.20
0.65 0.70 0.75 0.80 0.85 0.90 1.00
Ma
ss f
low
rate
rati
o
Turbine & Compressor eff (%)
Effect of of polytropic efficiencies on (m.) between
compression cycles
mass flow rate ratio from
NH3 to Steam compression
mass flow rate ratio from
Steam Charge to discharge
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.3
0.4
0.6
0.7
0.9
1.0
0.65 0.70 0.75 0.80 0.85 0.90 1.00
CO
P
Eff
icie
ncy
(%
)
Turbine & Compressor eff (%)
Effect of polytropic efficiencies on (COP, thermal and roundtrip
efficiencies)
η th exp (%)
η RT (%)
COP of NH3
Compression
COP of Steam
Compression
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6. CHEST – SENSITIVITY ANALYSIS
Result´s analysis and discussion
Parameter Affected values Symbol W NH3 comp
tot (kW) W Steam comp
tot (kW) WSteam exp tot
(kW) Q NH3 to H2O
(kW) Q Steam comp
tot (kW) Q Steam exp tot
(kW)
T Steam evaporation
(oC)
___ Decrease ___ ___ Decrease ___
T Max = T 1 (oC) ___ ___ Increase ___ ___ Increase
β Steam ___ Increase ___ ___ Increase ___
ɳ c, ɳ T (%) Decrease Increase Decrease Appr. Constant Decrease Appr. Constant
ɳ M, ɳ G (%) ___ ___ ___ ___ ___ ___
NH3 compression
(kg/s)
Increase ___ ___ Increase ___ ___
Steam
compression (kg/s)
___ Increase ___ ___ Increase ___
Steam expansion
(kg/s)
___ ___ Increase ___ ___ Increase
6/9/2015 37 M.SC . MAHMOUD H. I. MAHROUS – REMENA
6. CHEST – SENSITIVITY ANALYSIS
Result´s analysis and discussion
Parameter Affected values Symbol COP NH3
Compression COP Steam
Compression η th exp (%) η RT (%) ratio NH3 to
Steam
compression
ratio Steam
Charge to
discharge
T Steam evaporation
(oC)
___ Increase ___ Increase Decrease Decrease
T Max = T 1 (oC) ___ ___ Appr. Constant Increase ___ Decrease
β Steam ___ Decrease ___ Decrease ___ Increase
ɳ c, ɳ T (%) Increase Decrease Increase Increase Increase Increase
ɳ M, ɳ G (%) ___ ___ ___ Increase ___ ___
NH3 compression
(kg/s)
___ ___ ___ Decrease Decrease ___
Steam compression
(kg/s)
___ ___ ___ Decrease Increase Increase
Steam expansion
(kg/s)
___ ___ ___ Increase ___ Decrease
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST) Model
Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
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7. CASE STUDY – FUTURE STUDY
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Power SM 2 SM 3
P parasitics (sf+tes+pb) 5 7.2 MW
Pel net 45 42.8 MW
Q to be cooled 83.3 83.3 MWth
Gross turbine efficiency 0.375 0.375 -
Qturb 133.3 133.3 MWth
Solar field & storage SM 2 SM 3 Unit
Q sf (considering SM)design 267 400 MWth
A sf 0.513 0.769 km2
Number of loops 156 234 -
Number of collectors rows
per subfield
39 59 -
Required land for solar
field
1.69 2.54 km2
TES capacity 752 1,504 MWhth
FLH 3,755 5,177 hr
The modeled CSP plant in southern Spain - 50 MW - Parabolic Trough technology
DNI =2,118 kWh / (m2*year).
1. CSP combined with Molten salts storage model
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Investment
assumptions SM 2 and
SM 3 Spec inv SF 220 €/m2
Spec inv TES 44 €/MWhth
Spec inv back-up
boiler 270 €/kWel
Spec inv PB 1,000 €/kW
Spec inv. cooling 150 €/kWel
Debt Period 25 y
Discount rate 8 %
O&M Rate 2 % of Tot.
Inv./y Insurance Rate 0.5 % of Tot.
Inv./y spec inv FUEL 20 €/MWh
Boiler efficiency 0.85 -
Cost SM 2 SM 3
Annual Capital
cost 20.3 28.7 Mio. €/ y
O&M cost 4.3 6.1 Mio. €/ y
Insurance cost 1.1 1.5 Mio. €/ y
Fuel cost 0 0 Mio. €/ y
Total cost 25.7 36.4 Mio. €/ y
Levelized Electricity Cost (LEC)
SM 2 SM 3
Electricity (net
production) 147.5 191 GWhel /
year
Total cost 25.7 36.4 Mio. €/ y
LEC 17.45 19.03 €cent/kWh
7. CASE STUDY – FUTURE STUDY
1. CSP combined with Molten salts storage model
6/9/2015 41 M.SC . MAHMOUD H. I. MAHROUS – REMENA
2. Wind Power Park (50 MW) combined with CHEST concept model
Aggregated Wind Power Park electricity production each week for one year of 50 MW capacity in
Northern Germany
7. CASE STUDY – FUTURE STUDY
6/9/2015 42 M.SC . MAHMOUD H. I. MAHROUS – REMENA
2. Wind Power Park combined with CHEST concept model
0
5
10
15
20
25
30
35
40
45
50
1 5 9 13 17 21 25 29 33 37 41 45 49 53
Win
d e
lect
rici
ty p
rod
uct
ion
(M
W)
Number of weeks for one year
The effect of multiple base loads on the storage of the wind park electricity
production of (50 MW) capacity
Aggregated wind park production
value per week (MW)
Baseload_case 1 (25 MW)
Aggregated excess energy value per
week_case 1 (MW)
Baseload_case 2 (20 MW)
Aggregated excess energy value per
week_case 2 (MW)
Baseload_case 3 (15 MW)
Aggregated excess energy value per
week_case 3 (MW)
Generation, Load and excess energy curves of 50 MW capacity
7. CASE STUDY – FUTURE STUDY
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2. Wind Power Park combined with CHEST concept model
Installed Wind Capacity 50 MWel
Base Load 20 MWel
Turbine Capacity 20 MWel
Round-trip-efficiency 73 %
1 $ 0.9 €
1 kW 1.341 hp
Cost Compressors 7190$*hp^0.62
PCM 100 €/kWh
Sensible Heat material 50 €/kWh
Turbine 1000 €/kW
Assumptions
7. CASE STUDY – FUTURE STUDY
6/9/2015 44 M.SC . MAHMOUD H. I. MAHROUS – REMENA
2. Wind Power Park combined with CHEST concept model
FLH Wind (total, without losses) 3,191 h/y
FLH wind, direct 2,164 h/y
FLH CHEST 187 h/y
FLH (Sum wind, direct + CHEST) 2,351 h/y
FLH Fossil backup 1,153 h/y
7. CASE STUDY – FUTURE STUDY
6/9/2015 45 M.SC . MAHMOUD H. I. MAHROUS – REMENA
2. Wind Power Park combined with CHEST concept model
Inputs
Installed Wind Capacity 50 MWel
Base Load 20 MWel
Turbine Capacity 20 MWel
Round-trip-efficiency 73 %
Storage Capacity 160 MWh
PCM (52 % total TES capacity) 83.2 MWh
Compressor capacity 30 MWel
Power Generation (Wind + CHEST) 118 GWh/y
7. CASE STUDY – FUTURE STUDY
6/9/2015 46 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Investment assumptions
Wind 1,250 €/kW
Compressors 172 €/kW
Turbine 1,000 €/kW
PCM 100 €/kWhth
Sensible Heat material 50 €/kWhth
Debt Period 25 y
Discount rate 8.0 % %
O&M Rate 2.0 % %of Tot. Inv./y
Insurance Rate 0.5 % %of Tot. Inv./y
spec inv FUEL 20.0 €/kWh
Investment
Wind 62.5 Mio. €
Compressors 5.1 Mio. €
Turbines 20 Mio. €
PCM 8.32 Mio. €
Sensible material 3.84 Mio. €
Total Investment 99.8 Mio. €
7. CASE STUDY – FUTURE STUDY
2. Wind Power Park combined with CHEST concept model
6/9/2015 47 M.SC . MAHMOUD H. I. MAHROUS – REMENA
Cost
Annual Capital cost 9.3 Mio. €/ y
O&M cost 2.0 Mio. €/ y
Insurance cost 0.5 Mio. €/ y
Fuel cost 0.0 Mio. €/ y
Total cost 11.8 Mio. €/ y
LEC
El prod net 117.6 GWh el/year
Total cost 11.8 Mio. €/ y
LEC 10.08 €cent/kWh
7. CASE STUDY – FUTURE STUDY
2. Wind Power Park combined with CHEST concept model
OUTLINE
1. Motivation and Intention
2. Introduction
3. Aim of Work
4. Energy Storage Technologies
5. Compressed Heat Electricity Storage (CHEST) Model
Setup
6. CHEST Sensitivity Analysis
7. Case Study – Future Study
8. Conclusion and Outlook
6/9/2015 48 M.SC . MAHMOUD H. I. MAHROUS – REMENA
8. CONCLUSION AND OUTLOOK Conclusion
Innovative storage types are required which are as far as possible free of the aforementioned constrains (CHEST concept), which has been recently proposed by DLR.
Main findings
CHEST concept has no specific geological requirements and negligible environmental impact.
It can integrate low temperature heat sources which is used instead of the NH3 compression cycle (Solar Water Heaters).
It can work for the small scale and large scale systems (1MW-100 MW)
ɳRT = 73 % and ɳth = 36.73 %.
Future requirements
Preliminary economic analysis still has to be performed.
CHEST concept integration in large scale electricity networks should be evaluated with adapted tools such as REMix.
6/9/2015 49 M.SC . MAHMOUD H. I. MAHROUS – REMENA
THANK YOU
6/9/2015 50 M.SC . MAHMOUD H. I. MAHROUS – REMENA