Influence of non-uniform temperature distribution in thermal conductivity measurement experiment
In the experiment of measuring the thermal conductivity of non-good conductor by steady-state method,the non-uniformity of the temperature distribution of heating disc and its influ-ence on the experimental results were analyzed.The temperature of the two ends of the sample to be measured was not uniform,so the temperature difference value at a certain position could not be sim-ply used to calculate the result.A simplified model was established to describe the relationship be-tween the temperature difference in the central zone and the temperature difference in the edge zone of the heating disk,and an effective correction formula was derived from it.
thermal conductivitysteady-state methodnon-uniform temperature field
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