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Results of closed cycle MHD power generation tests with a helium-cesium working fluidThe cross-sectional dimensions of the MHD channel in the NASA Lewis closed loop facility have been reduced to 3.8 x 11.4 cm. Tests were run in this channel using a helium-cesium working fluid at stagnation pressures of 1.6 x 10 to the 5th N/sq m, stagnation temperatures of 2000-2060 K and an entrance Mach number of 0.36. In these tests Faraday open circuit voltages of 200 V were measured which correspond to a Faraday field of 1750 V/m. Power generation tests were run for different groups of electrode configurations and channel lengths. Hall fields up to 1450 V/m were generated. Power extraction per electrode of 183 W and power densities of 1.7 MW/cu m have been obtained. A total power output of 2 kW was generated for tests with 14 electrodes. The power densities obtained in this channel represent a factor of 3 improvement over those reported for the m = 0.2 channel at the last EAM Symposium.
Document ID
19770056681
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Sovie, R. J.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Plasma Physics
Meeting Information
Meeting: Symposium on the Engineering Aspects of Magnetohydrodynamics
Location: Pittsburgh, PA
Start Date: May 16, 1977
End Date: May 18, 1977
Accession Number
77A39533
Distribution Limits
Public
Copyright
Other

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