年間 18 号発行
ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561
Indexed in
A TRANSIENT METHOD FOR MEASURING THE THERMAL CONDUCTIVITY OF A CYLINDRICAL ROD
要約
This paper presents a novel experimental method for measuring the thermal conductivity of a cylindrical rod. The experimental system is designed with two identical water tanks and one cylindrical rod with two ends connected to the water tank. Two identical stirrers are placed in the two water tanks to obtain the same convection boundary. The calibration experiment was carried out using a pure copper rod of known thermal conductivity, and the thermal resistance of the two end surfaces of the copper rod was determined. The effective thermal conductivity can be measured by continuously reading the average temperature of the water in the two tanks and/or the temperature of the two end surfaces of the cylindrical rod. The proposed method has the following advantages: (1) no need to cut test samples from the body; (2) simple structure and easy to implement; (3) data analysis can be greatly simplified; (4) the system is very reliable. This method can be used to measure cylinders with high thermal conductivity, and the measurement accuracy depends on the calibration test.
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