非定常線熱源法の再検討 : 第3報,絶縁被覆層の影響に関する解析的考察

概要

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In measuring thermal conductivity of a corrosive or an electrically conductive liquid using the transient line source technique, the wire must be coated. This report analytically investigates the effects of he coating layer on the measured value using the GFD and FDM, considering two cases where the thickness of the layer is uniform in circumferential direction, or unevenly distributed. The calculation is carried out varying the measurement conditions, such as the thermal conductivity of the coating material and of the sample liquid, size of the wire, and thickness of the layer, and the change in the apparent thermal conductivity of the sample liquid with time is presented. It was found that the thermal conductivity of the sample liquid measured is not significantly affected by the coating.
社団法人日本機械学会の論文
1989-08-25