presentazione standard di powerpoint · phoenician glass blowers 1800 1850 sondhass tube 1859 rijke...
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Hot plasma
Magnetic FieldMHD Generators:
➢ No friction or wear → high reliability→ durability→ low costs for maintenance→ low weight
➢ High Temperatures → high Carnot efficiency→ low mass flow rate→ small size devices
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Gas-SteamTGASC.C.
Steam
Air + Fuel(high flowrate)
< 1400 °C
MHD TGASC.C.Steam
O2 + Fuel(low flowrate) MHD-Gas-Steam
> 2000 °C
Combined Cycles
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
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Pubs/Year on MHD Generators (Scopus)
➢ Limited enthalpy drop➢ Electrodes corrosion➢ High external magnetic field →➢ Seeding retrieval ➢ Competitor: Gas Turbine
Superconducting coils
?
Alemany et Al, 2011
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Acoustics
Stack
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Acoustics
50 bc
Phoenicianglass blowers
1800
1850Sondhass tube
1859Rijke tube
1877Lord Rayleigh
1900
1949Taconis waves
1962Heat Exchangers
Sondhass tube
1966First stack (Feldman)
1969Rott’s Eq.ns
1985Wheatley,
Hoffer,Swift
2000
2003Swift’s
Textbook
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
➢Limited enthalpy drop → Independency on the Temperature➢Electrodes corrosion → Electromagnetic Induction➢Superconducting coils → High conductivity/Excitation with electric field ➢Seeding retrieval → Liquid Metal/Ionized gas
Strategy
MHD
HEAT
HEA
TThermoacoustics
MagnetoHydroDynamics
→ Quasi-Static Working Fluid
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
MHD
HEAT
HEA
TThermoacoustics
➢Piezoelectric crystals➢Loudspeaker➢Alternated piston + Electromechanic converter➢…➢MHD
Electromechanical Conversion
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Loudspeaker
Solar Energy
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Resonators
Wind Power
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Sea Power
Von Karman streets
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Matching
stub
MHD
Transformer
tube
Transformer
tube
Two-phases MHD generator
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
STACK
CAPACITOR PLATE
+
-
+
+
+
-
-
-
-
-+
+-spark
glass
Negative platePositive plate
migrationNegative clouds Positive clouds
ExternalVoltage
Supply
Single phase MHD generator
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Heat input fromSolar Collector
Stack of closelyspaced parallel
plates
Heat Rejected
Heat AbsorbedHeat Rejected
Sound Wave
Resonator Tubes
Cooling
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Storage
Ultracapacitors
Batteries
Electrolyzers
Hydrogen fuel cells
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
➢ High power/weight ratio➢ High power/volume ratio➢ No solid moving parts➢ No fluid transport➢ Scalability➢ Very high temperatures➢ Low cost of components
Advantages of Static Conversion
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Static Energy Conversion for Renewable HarvestingCOST 2021 programme
Project-related Areas
➢ Static conversion of Renewables into mechanical energy
➢ Static conversion of mechanical energy into electricity
➢ Static cooling
➢ Energy Storage
➢ Materials
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THANK YOU