Single channel double-duct liquid metal electrical generator using a magnetohydrodynamic device

Patent · Thu Dec 31 23:00:00 EST 1998

OSTI ID:872387

Haaland, Carsten M ^[1]; Deeds, W Edward ^[2]

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1. Dadeville, AL
2. Knoxville, TN

A single channel double-duct liquid metal electrical generator using a magnetohydrodynamic (MHD) device. The single channel device provides useful output AC electric energy. The generator includes a two-cylinder linear-piston engine which drives liquid metal in a single channel looped around one side of the MHD device to form a double-duct contra-flowing liquid metal MHD generator. A flow conduit network and drive mechanism are provided for moving liquid metal with an oscillating flow through a static magnetic field to produce useful AC electric energy at practical voltages and currents. Variable stroke is obtained by controlling the quantity of liquid metal in the channel. High efficiency is obtained over a wide range of frequency and power output.

• Research Organization: LOCKHEED MARTIN ENRGY SYST INC
• DOE Contract Number: AC05-84OR21400
• Assignee: Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
• Patent Number(s): US 5923104
• OSTI ID: 872387
• Country of Publication: United States
• Language: English

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