Abstract
Magnetohydrodynamics (MHO) can improve the thermal efficiency and reduce levels of SOx and NO emissions of existing coal-fired power generation plants. Although the thermal and electrochemical environments for a coal-fired MHO channel challenge the materials used, platinum, tungsten, and tungsten-copper have been found to be suitable choices. Evaluations indicate these materials perform adequately as electrodes and other gas-side surfaces in the coal-fired MHO channel. Analysis of test elements has resulted in the identification of wear mechanisms. Testing of a prototypical coal-fired MHO channel incorporating these materials is under way and will be completed in 1993.
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References
S.W. Petty et al. “1A4 Channel Design and Fabrication” (Paper presented at the 29th Symposium on the Engineering Aspects of MHO, New Orleans, LA, June 1991).
R.J. Pollina et al., “1A4 Materials Corrosion and Confirmation Test Results” (Paper presented at the 29th Symposium on the Engineering Aspects of MHO, New Orleans, LA, June 1991).
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Farrar, L.C., Shields, J.A. Tungsten and tungsten-copper for coal-fired MHD power generation. JOM 44, 30–35 (1992). https://doi.org/10.1007/BF03222300
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DOI: https://doi.org/10.1007/BF03222300