Heat Pump Energy Storage System Varmepumpe Energilagring fileThermal energy storage technologies...
Transcript of Heat Pump Energy Storage System Varmepumpe Energilagring fileThermal energy storage technologies...
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: [email protected]
Thermal energy storage technologies
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Agenda
The Danish energy system
PTES and CAES
Introduction Thermal storage technologies
Conclusion
TEST
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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
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Danish Energy System
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Danish Energy System
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Danish Energy System
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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
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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
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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
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Compressed air energy storage concept
• Reversible CAES
– No energy losses
• Adiabatic
– No heat loss
• Conventional
– Added fuel and gas turbine
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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
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An integrated CAES
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Efficiency PTES
1 MWh electricity
4 MWh heat 1 MWh electricity
Heat pump COP 4
Expander
Efficincy 0.25
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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
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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
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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
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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
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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
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Thank you for your attention
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PTES extra slides
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PTES extra slides