Experiments of High Temperature Inert Gas Plasma MHD Electrical Power Generation with Hall and Diagonal Connections

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  • ホール接続およびダイアゴナル接続における高温希ガスプラズマMHD発電実験
  • ホール セツゾク オヨビ ダイアゴナル セツゾク ニ オケル コウオンキガスプラズマ MHD ハツデン ジッケン

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Abstract

High temperature inert gas (argon) plasma MHD electrical power generation using a linear shaped channel with Hall and diagonal connections has been conducted. It is revealed from the observation by using a high-speed camera that the MHD power-generating plasma is almost stable regardless of the connection type. Enthalpy extraction ratios of 5.6% for the Hall connection, 6.7% for the diagonal connection (diagonal angle 53∼66 degree), and 10.1% for the diagonal connection (diagonal angle 36∼48 degree) have been achieved under the operating conditions of an inlet total temperature of 9000K, an inlet total pressure of 0.105MPa, and a magnetic flux density of 4.0T. The output power can suffer from a low electric field in the upstream region in a Hall connection, and is improved for no Hall current condition in a diagonal connection.

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