非定常細線法による溶融塩の熱伝導率測定 : 第1報,プローブの試作とKNO_3による予備的測定

概要

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An apparatus has been cnstructed for precise and absolute measurement of the thermal conductivity of molten salts at high temperatures. The principle of the measurement is based on the absolute transient hot-wire method. In order to apply this method to molten salts, the entire probe has to be insulated. After many trials of insulation techniques applied on probes, it has been confirmed that the following probe is the most suitable for the present purpose : platinum thin wire coated with SiO_2 prepared by metal alkoxide hydrolysis process, and titanium leads insulated by plasma sprayed Al_2O_3 with SiO_2 upper coating. The usability of the probe has been tested by measuring the thermal conductivity of molten KNO_3 in the temperature range from 350 to 390℃. The accuracy of the present measurement is estimated to be ±2%.
一般社団法人日本機械学会の論文
1986-02-25