ヒドラジン水和物の濃度拡散挙動の観察

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  • Observation of Concentration Diffusion Behavior of Hydrazine Hydrate
  • ヒドラジン スイワブツ ノ ノウド カクサン キョドウ ノ カンサツ

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<p>Highly accurate measurement of thermal properties, reaction rates and mass transfers is necessary to grasp thermal flow characteristics of nuclear reactor plant because these properties are unsteadily sensitive to concentration, temperature, pressure and scale. On the real scale of the plant, however, there are problems such as the complexity of three-dimensional flow and the effect of convection. In this study, a novel technology that measures mass transfer and reaction rate of nuclear application material with high accuracy and high speed by applying microchannel which makes one-dimensional laminar flow, has developed. In this paper, a micro flow control system that can adjust flow with a minimum volume of 1 μL/min. by a pressurized pump, was fabricated. In order to observe concentration diffusion of the flow field in real time, a near infrared spectroscopic visible observation device was developed and combined with the flow system. The mutual diffusion coefficient was measured for hydrazine hydrate, which is added for the purpose of preventing corrosion of secondary piping in nuclear power plant. It revealed that the absorption depends on the concentration near 1555 nm for Fourier transform near-infrared spectrophotometer. The diffusion coefficients of 5, 10 and 20 wt% for hydrazine hydrate were quantified with the luminance profiles in the absorption peak wavelength.</p>

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  • 混相流

    混相流 33 (1), 71-76, 2019-03-15

    日本混相流学会

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