High-density magnetohydrodynamic energy conversion in a high-temperature inert gas

Journal Article · Mon Jul 28 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2966371· OSTI ID:21124003

Murakami, Tomoyuki; Okuno, Yoshihiro ^[1]

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1. Department of Energy Sciences, Tokyo Institute of Technology, 4259-G3-38 Nagatsuta, Midori-ku, Yokohama 226-8502 (Japan)

We describe high-density magnetohydrodynamic (MHD) energy conversion in a high-temperature seed-free argon plasma, for which a compact disk-shaped Hall-type radial-flow MHD electrical power generator is used. The state of the MHD power-generating plasma changes with increasing total inflow temperature from 8200 to 9400 K; unstable behavior accompanied by the appearance of fine structures is transformed to a homogeneous and stable state. The attained enthalpy extraction efficiency is comparable to previous results using a conventional seeded gas. Furthermore, a high power output density is achieved even in relatively low-density magnetic flux.

• OSTI ID: 21124003
• Journal Information: Applied Physics Letters, Vol. 93, Issue 4; Other Information: DOI: 10.1063/1.2966371; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARGON
ELECTRIC GENERATORS
ENERGY CONVERSION
ENTHALPY
FINE STRUCTURE
MAGNETIC FLUX
MAGNETOHYDRODYNAMICS
PLASMA
TEMPERATURE RANGE OVER 4000 K