presentazione standard di powerpoint · phoenician glass blowers 1800 1850 sondhass tube 1859 rijke...

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


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


0

20

40

60

80

100

120

140

160

19

61

19

63

19

65

19

67

19

69

19

71

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99

20

01

20

03

20

05

20

07

20

09

20

11

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13

20

15

20

17

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


Acoustics

Stack


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


➢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


MHD

HEAT

HEA

TThermoacoustics

➢Piezoelectric crystals➢Loudspeaker➢Alternated piston + Electromechanic converter➢…➢MHD

Electromechanical Conversion


Loudspeaker

Solar Energy


Resonators

Wind Power


Sea Power

Von Karman streets


Matching

stub

MHD

Transformer

tube

Transformer

tube

Two-phases MHD generator


STACK

CAPACITOR PLATE

+

-

+

+

+

-

-

-

-

-+

+-spark

glass

Negative platePositive plate

migrationNegative clouds Positive clouds

ExternalVoltage

Supply

Single phase MHD generator


Heat input fromSolar Collector

Stack of closelyspaced parallel

plates

Heat Rejected

Heat AbsorbedHeat Rejected

Sound Wave

Resonator Tubes

Cooling


Storage

Ultracapacitors

Batteries

Electrolyzers

Hydrogen fuel cells


➢ 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


Project-related Areas

➢ Static conversion of Renewables into mechanical energy

➢ Static conversion of mechanical energy into electricity

➢ Static cooling

➢ Energy Storage

➢ Materials

THANK YOU

presentazione standard di powerpoint · phoenician glass blowers 1800 1850 sondhass tube 1859 rijke...

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