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Pulsed high power generation system using a disk MHD generator driven by nonequilibrium plasma generator

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1 Author(s)
Harada, N. ; Nagaoka Univ. of Technol., Japan

The author propose a closed cycle disk MHD generator driven by a nonequilibrium plasma generator (NPG/CCDisk) system as an alternative for application as a portable-high performance pulsed power supply which could be applied for geophysical research, geological survey, earthquake prediction and other commercial and experimental power supplies. Performance prediction and design study of a disk generator for NPG system are carried out. The authors find that in order to demonstrate higher performance, detailed design of channel shape is necessary. A design study is also carried out based on the concept that local electron temperature is kept so as to locate the plasma in the stable regime. Enthalpy extraction of up to 40% and output power of 7.2 MW with the thermal input of 18 MWt are successfully expected. The effects of combustion product of alumina particle and residual oxygen on generator performance are studied. Results show that when alumina particle and oxygen concentration exceed a certain level, the output power suddenly decreases. Fortunately, possible alumina particle and residual oxygen concentration at the typical NPG burning conditions are found to be well below each critical level of power degradation. The main principle of this NPG/CCDisk concept is confirmed. Finally, the authors conclude that the proposed NPG/CCDisk system must provide a reliable and durable high performance pulsed power supply

Published in:

Energy Conversion Engineering Conference, 1997. IECEC-97., Proceedings of the 32nd Intersociety  (Volume:4 )

Date of Conference:

27 Jul-1 Aug 1997

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