Closed cycle MHD generator with nonuniform gas-plasma flow driving recombinated plasma clots

Slavin, V. S.; Danilov, V. V.; Sokolov, V. S.

doi:10.1109/iecec.1996.553806

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…MHD energy conversion using seed-free inert gas plasma has been proposed as an alternative method. To achieve high electrical conductivity in pure inert gas plasma without seeding, the following three methods have been proposed: MHD power generation using plasma clots [3], frozen inert gas plasma (FIP) [4], and high-temperature inert gas plasma (HIP) [5].…”

Section: Introductionmentioning

confidence: 99%

Plasma Characteristics and Performance of Magnetohydrodynamic Generator With High-Temperature Inert Gas Plasma

Tanaka

Murakami

Okuno

2014

IEEE Trans. Plasma Sci.

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We describe magnetohydrodynamic power generation experiments with seed-free high-temperature inert gas plasma using a linear-shaped Faraday-type generator driven by a shock-tunnel facility. The influence of inlet total temperature between 6500 and 9000 K on the plasma characteristics and its influence on generator performance are shown. By increasing the inlet total temperature, streaky and unstable plasma, characterized by large fluctuations in power output, is transformed into homogeneous and stable plasma, providing stabilized and improved power output. A quasi-1-D numerical simulation suggests that the plasma in the generator undergoes recombination when the inlet total temperature is high, which might be a factor in plasma stabilization. At the optimum load resistance, the enthalpy extraction ratio is improved to 12.9%; the optimum load resistance decreases as inlet total temperature is increased by the increase in electrical conductivity.Index Terms-High-temperature inert gas, magnetohydrodynamic (MHD) power generation, plasma structure.

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Section: Introductionmentioning

confidence: 99%

Plasma Characteristics and Performance of Magnetohydrodynamic Generator With High-Temperature Inert Gas Plasma

Tanaka

Murakami

Okuno

2014

IEEE Trans. Plasma Sci.

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“…A method of achieving high electrical conductivity by ionizing an inert working gas without using a seed material has been proposed and has been studied through basic experiments and numerical simulations [4][5][6][7]. In the frozen inert gas plasma method, a plasma with a higher electron temperature (about 9000 K) than that resulting from preionization by a high-frequency electromagnetic field is produced at the generator inlet from an inert gas at 2000 K [5], and power is generated by passing it through the MHD generator before the plasma breaks down due to recombination.…”

Section: Introductionmentioning

confidence: 99%

Plasma Fluid Flow Behavior and Power Generation Characteristics in a High‐Temperature Inert Gas Plasma Faraday MHD Generator

Tanaka

Murakami

Okuno

2015

Electrical Engineering Japan

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The plasma fluid flow behavior and power generation characteristics in a Faraday magnetohydrodynamic (MHD) generator using a high-temperature inert gas (argon) plasma have been examined in a time-dependent two-dimensional numerical simulation. The inhomogeneous and unstable plasma at an inlet total temperature of 7000 K results in reductions and fluctuations in the output power. The plasma becomes homogeneous and stable as the inlet total temperature increases to 9000 K. One of the reasons for the suppression of ionization instability may be weakness of the dependency of the electrical conductivity on the electron number density, because the Coulomb collision of electrons becomes dominant during deviation from Saha equilibrium. C⃝ 2015 Wiley Periodicals, Inc. Electr Eng Jpn, 194(2): 46-53, 2016; Published online in Wiley Online Library (wileyonlinelibrary.com).

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Plasma Fluid Flow Behavior and Power Generation Characteristics in a High-Temperature Inert Gas Plasma Faraday Type MHD Generator

Tanaka¹,

Murakami²,

Okuno³

2014

IEEJ Trans. PE

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Closed cycle MHD generator with nonuniform gas-plasma flow driving recombinated plasma clots

Cited by 3 publications

References 1 publication

Plasma Characteristics and Performance of Magnetohydrodynamic Generator With High-Temperature Inert Gas Plasma

Plasma Characteristics and Performance of Magnetohydrodynamic Generator With High-Temperature Inert Gas Plasma

Plasma Fluid Flow Behavior and Power Generation Characteristics in a High‐Temperature Inert Gas Plasma Faraday MHD Generator

Plasma Fluid Flow Behavior and Power Generation Characteristics in a High-Temperature Inert Gas Plasma Faraday Type MHD Generator

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