MHD power generation with fully ionized seed
Recovery of power density in the regime of fully ionized seed has been demonstrated experimentally using an MHD disk generator with the effective Hall parameter up to 5.0 when the seed was fully ionized. The experiments were conducted with a shock-heated and potassium-seeded argon plasma under the following conditions: stagnation gas pressure = 0.92 atm, stagnation gas temperature = 2750 K, flow Mach number = 2.5, and seed fraction = 1.4 x 10/sup -5/. Measurements of electron-number density and spectroscopic observations of both potassium and argon lines confirmed that the recovery of power output was due to the reduction of ionization instability. This fact indicates that the successful operation of a disk generator utilizing nonequilibrium ionization seems to be possible and that the suppression of ionization instability can also provide higher adiabatic efficiency. Furthermore, the lower seed fraction offers technological advantages related to seed problems.
- Research Organization:
- Tokyo Inst. of Technology, Japan
- OSTI ID:
- 6520369
- Journal Information:
- J. Energy; (United States), Journal Name: J. Energy; (United States) Vol. 1:5; ISSN JENED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
30 DIRECT ENERGY CONVERSION
300102* -- MHD Generators-- Performance & Testing
300104 -- MHD Generators-- Duct Engineering & Fluid Dynamics
ALKALI METALS
ARGON
CURRENTS
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRICAL PROPERTIES
ELECTRON DENSITY
ELEMENTS
FLUID FLOW
HEATING
INSTABILITY
JOULE HEATING
MACH NUMBER
MAGNETIC FIELDS
METALS
MHD GENERATORS
NON-EQUILIBRIUM PLASMA
NONMETALS
PERFORMANCE
PERFORMANCE TESTING
PHYSICAL PROPERTIES
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
PLASMA INSTABILITY
PLASMA SEEDING
POTASSIUM
PULSED MHD GENERATORS
RARE GASES
SHOCK TUBES
STABILIZATION
SUPERSONIC FLOW
TESTING
VELOCITY
300102* -- MHD Generators-- Performance & Testing
300104 -- MHD Generators-- Duct Engineering & Fluid Dynamics
ALKALI METALS
ARGON
CURRENTS
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRICAL PROPERTIES
ELECTRON DENSITY
ELEMENTS
FLUID FLOW
HEATING
INSTABILITY
JOULE HEATING
MACH NUMBER
MAGNETIC FIELDS
METALS
MHD GENERATORS
NON-EQUILIBRIUM PLASMA
NONMETALS
PERFORMANCE
PERFORMANCE TESTING
PHYSICAL PROPERTIES
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
PLASMA INSTABILITY
PLASMA SEEDING
POTASSIUM
PULSED MHD GENERATORS
RARE GASES
SHOCK TUBES
STABILIZATION
SUPERSONIC FLOW
TESTING
VELOCITY