Analysis of Two-Phase Liquid Metal MHD Induction Converter

概要

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An analysis is made on the performance characteristics of a liquid-metal MHD induction converter with liquid-gas two-phase mixture as working fluid. The equivalent electrical conductivity and the velocity vary along the generator channel in this kind of induction converter.<BR>Two important parameters which represent the variations of the equivalent electri-cal conductivity and the velocity respectively are defined. With these parameters the induction equation is analytically solved with the perturbation technique.<BR>Quantities representing generator performance, such as power densities and gener-ator efficiency, are obtained from the perturbed magnetic field and the parameters mentioned above.<BR>Suitable combination of values for these parameters will tend to let the effects brought by the variations of electrical conductivity and of velocity cancel each other, and the relation between these parameters is analytically derived that assures the non-perturbation of the magnetic field and of the gross output power density. In this condi-tion of non-perturbation, the generator efficiency approaches that for the unperturbed case when the velocity variation and the inlet slip ratio are small.
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