Research and Development on Method for Helical-Type Seawater MHD Hydrogen Generation

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First, systematic studies on the effects of the configuration of a helical wall on the flow loss as well as measurements of 3 D velocity distribution were made using experimental devices constructed to model the generator. Then, a calculation model of flow loss in a helical-type seawater MHD(magnetohydrodynamics) hydrogen generator was formulated. Second, after performances of the generator were estimated on the basis of the calculation model, the configuration was optimized. Experiments on the electromotive force and generator output were carried out to elucidate the fundamental characteristics of the generator. As a result, experimental values were in agreement with calculated values. In addition, there was a possibility that the MHD separation method was available for separating hydrogen gas from mixed seawater.