A Study of Poor Conductor’s Thermal Conductivity Coefficient Measurement

Abstract:

When measuring the thermal conductivities of poor conductor with steady-state method, some errors should be introduced through the process of the experimental principle derivation to the experimental data measurement. To satisfy the need of measurement, this study aims to improve the structure of the “TC-I1 Type thermal conductivity measuring apparatus” correspondingly: we placed two fans at the side of the cooling plate, thus effectively control the stability of the strong-force convection cooling environment. This study chose digital thermometer of UT325 Type to collect temperature signals, storing the data on computer and putting such data under fitting process with the software Matlab. Compared with the traditional measurement, the post-modification apparatus successfully achieves lower errors in the coefficient of heat conductivity measurement and thus the results are closer to the inherent attribute values of the sample plate. It’s very satisfactory to the requirements of teaching and scientific research oriented measurements.

• Periodical: Applied Mechanics and Materials (Volumes 333-335)
• Pages: 327-331
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.333-335.327
• Online since: July 2013
• Authors: Xue Song Leng, Kai Hua Ran, Yan Dong Wang
• Keywords: Poor Conductor, Steady-State Method, Strong-Force Convection, Thermal Conductivity (TC)

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