Recently, several successful duration tests of theMHD power generation have been conducted in theUSA and China. It has been predicted that thecycle efficiency of (1) the coal-fired MHD/steamturbine combined system will be up to 50-60%with the oxidizer of preheated air, (2) 40-50%with the oxygen enriched air, and (3) 40% in thecase with the CO j /O j combustion system,respectively. The concentration of O » within theexhaust gas in the last case will be 90 mol% whileit is 15 mol% in the first case. Therefore, the CO *recovery would be much easier than that using theair as theoxidizer. In this study, attempts weremade to show how to improve the above-mentionedcycle efficiencies by performing the numericalcalculations
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