Post on 15-Sep-2019
Community Power and Renewable Energy Storage in Denmark and in the EU Community power og vedvarende energi lagring i Danmark
og i EU Nordisk Folkecenter for Vedvarende Energi, 7760 Hurup, Denmark, 12.12.2016
The event is supported by Europa Nævnet/Arrangementet er støttet af
Heat Pump Energy Storage System Varmepumpe Energilagring
Erasmus Damgaard Rothuizen, DTU, Denmark
Thermal energy storage technologies
Presenter:
Researcher Erasmus Rothuizen
Section of Thermal Energy
Technical University of Denmark
Email: edro@mek.dtu.dk
Thermal energy storage technologies
12/12/2016 Thermal energy storage technologies 3 DTU Mechanical Engineering, Technical University of Denmark
Agenda
The Danish energy system
PTES and CAES
Introduction Thermal storage technologies
Conclusion
TEST
12/12/2016 Thermal energy storage technologies 4 DTU Mechanical Engineering, Technical University of Denmark
Danish Energy System
• High share of combined heat and power
• Wind share 7 % of energy consumption 41,8 % of electricity
• Total share of renewables 28,6 %of energy consumption
• Fluctuating wind power and PV are challenges to power grid and plant control
• Demand-responding consumers are needed
12/12/2016 Thermal energy storage technologies 5 DTU Mechanical Engineering, Technical University of Denmark
Danish Energy System
12/12/2016 Thermal energy storage technologies 6 DTU Mechanical Engineering, Technical University of Denmark
Danish Energy System
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DK-West: Brutto production DK-West: Gross consumption
12/12/2016 Thermal energy storage technologies 7 DTU Mechanical Engineering, Technical University of Denmark
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84
36
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DK
K/M
Wh
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Danish Energy System
12/12/2016 Thermal energy storage technologies 8 DTU Mechanical Engineering, Technical University of Denmark
Thermal storage technologies
• ISEC
– Electricity to hot water up to app. 90 C
• TEES/HPES
– Electricity
• Thermal storage for district heating from CHP’s and solar panels
– water up to 110 C
• High temperature latent aluminum storage for power plants
– Heat at app. 700 C (In research phase)
– Electricity
• CAES
– Electricity
12/12/2016 Thermal energy storage technologies 9 DTU Mechanical Engineering, Technical University of Denmark
Thermal storage technologies
• ISEC
– Electricity to hot water up to app. 90 C
• TEES/HPES
– Electricity
• Thermal storage for district heating from CHP’s and solar panels
– water up to 110 C
• High temperature latent aluminum storage for power plants
– Heat at app. 700 C (In research phase)
– Electricity
• CAES
– Electricity
12/12/2016 Thermal energy storage technologies 10 DTU Mechanical Engineering, Technical University of Denmark
Pumped themal energy storage concept
• Transcritical or Zeotropic refrigerant
– CO2
• Low temperature thermal storage 140 C
• Intermediate storage
– Less temperature lift per gas cooler
– Matching temperature glides
• Increase of efficiency
12/12/2016 Thermal energy storage technologies 11 DTU Mechanical Engineering, Technical University of Denmark
Compressed air energy storage concept
• Reversible CAES
– No energy losses
• Adiabatic
– No heat loss
• Conventional
– Added fuel and gas turbine
12/12/2016 Thermal energy storage technologies 12 DTU Mechanical Engineering, Technical University of Denmark
An Integrated PTES System
Gram: www.gram-fjernvarme.dk/index.php/solvarme-anlaegget-i-tal
Vind: www.danskenergi.dk/Aktuelt/Arkiv/2015/Oktober/15_10_09A.aspx
Mejeri: www.mariahedegaard.dk/fotoserie-fra-et-dogn-i-danmark/tapning-af-maelk-pa-christiansfeld-mejeri/
Hus: https://www.colourbox.dk/vektor/illustration-af-organisk-groenne-hus-vektor-1984187
On demand: https://str.llnl.gov/AprMay11/meike.html
12/12/2016 Thermal energy storage technologies 13 DTU Mechanical Engineering, Technical University of Denmark
An integrated CAES
12/12/2016 Thermal energy storage technologies 14 DTU Mechanical Engineering, Technical University of Denmark
Efficiency PTES
1 MWh electricity
4 MWh heat 1 MWh electricity
Heat pump COP 4
Expander
Efficincy 0.25
12/12/2016 Thermal energy storage technologies 15 DTU Mechanical Engineering, Technical University of Denmark
Efficiency PTES
1 MWh electricity
3.2 MWh heat 0.5 MWh electricity
0.1 MWh electricity
Heat pump COP: 3.2
Expander
Efficincy 0.15
2.7 MWh heat
12/12/2016 Thermal energy storage technologies 16 DTU Mechanical Engineering, Technical University of Denmark
Efficiency Conventional CAES
0.7 MWh heat 3 MWh electricity
0.3 MWh electricity
Fuel (NG or BG)
3.6 MWh
1.3 MWh
1 MWh electricity
12/12/2016 Thermal energy storage technologies 17 DTU Mechanical Engineering, Technical University of Denmark
Comparaison of PTES and CAES
PTES
CAES
Reversible: 1
Optimized: 0.6
One stage: 0.5
1 Unit
Reversible: 1
Adiabatic: 0.7
Conventional: 0.4
1 Unit
Battery: 0.95
12/12/2016 Thermal energy storage technologies 18 DTU Mechanical Engineering, Technical University of Denmark
Prove of concepts
CAES
• Huntorf CAES
– More than 20 years of operation
• Location
– Geographical decided
PTES
• Yet to be proven
• ABB
– Expander problems
– Still need demonstration
– Patents
• Location
– Where needed
12/12/2016 Thermal energy storage technologies 19 DTU Mechanical Engineering, Technical University of Denmark
Summary
• Bulk electricity storage is needed in the future and will involve
– Large investments
– Significant losses du to irreversibilities
– Large volume and/or area
– Large price fluctuations or high consumer prices to be feasible
• Several ideas and concept are investigated
– Long term storage
– PTES
• Independent of location
• Multipurpose integration
• Still to be proven
– CAES
• Proven concept
• Dependent on location
12/12/2016 Thermal energy storage technologies 20 DTU Mechanical Engineering, Technical University of Denmark
Thank you for your attention
?
12/12/2016 Thermal energy storage technologies 21 DTU Mechanical Engineering, Technical University of Denmark
PTES extra slides
12/12/2016 Thermal energy storage technologies 22 DTU Mechanical Engineering, Technical University of Denmark
PTES extra slides