Evaluation of bubble suspension behavior in electrolyte melts

다국어 초록 (Multilingual Abstract)

The viscosity of a molten electrolyte mixture commonly used in direct coal fuel cells (DCFCs) was evaluated.
The measurements were obtained from near the melting temperature to a high temperature at which a considerablybubbly flow was induced by decomposition. A gravity-driven capillary viscometer was employed to obtain the viscositydata under low Reynolds flow conditions, using a modified Poiseuille flow relationship. The importance of carbondioxide addition in measuring the intrinsic viscosity was clearly observed. In addition, the effect of the bubble suspensionon the viscosity was quantified in terms of the volume fraction and capillary number. The results showed that the increasein viscosity was best explained only by the difference in the volume fraction of spherical bubbles in the electrolytemelt.

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