Abstract
For estimation of the influence of slag layer on the electrode voltage drop, we have considered two identical open-cycle MHD generators with and without ash in the combustion products. Using the simple model of a slag layer with ohmic condution of current, we have evaluated the electrode voltage drop in a finitely segmented Faraday-type MHD generator with slagging electrodes. The electrode voltage drops in the presence of slag at different values of slag/plasma surface temperatures with and without slag for various values of Hall parameter and electrode wall temperature have been compared. It has been found that the presence of slag layer over the electrode surface with high slag/plasma surface temperature is more advantageous for lower electrode wall temperature and higher Hall parameter.
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