S052024 低融点合金を用いたMHD発電特性の調査([S05202]機能性流体工学の先端融合化(2))

概要

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MHD power generation is a direct-electricity-generation method no involving mechanical components, such as a turbine. Usually plasma and liquid metal such as mercury are often used in the MHD power generation. However the power generation using plasma, requires high temperature which makes system operation dangerous to environment. Therefore, considering safety, this research aims to use low-melting-point-alloy as a working fluid for the power generation. In this study, the MHD power generation characteristic using the liquid metal was investigated at high Reynolds numbers. To theoretically verify the present study, the power generation characteristic obtained by experiment and order evaluation was compared. Study shows that the output voltage linearly increases with the Reynolds number and a difference of the trend between the laminar flow and a turbulent flow is hardly to see. This is because, from the theoretical analysis, the electromotive force due to the turbulence is found to very small and neglectable. Therefore, in evaluating power generation characteristics of the present low-melting-point liquid metal system at high Reynolds numbers, it was not necessary to take the electromotive force into consideration.
一般社団法人日本機械学会の論文
2011-09-11