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一维热传导条件下测点温度与加热时间的相关性研究Correlation between the Measured Point Temperature and the Heating Time under the Conditions of One-Dimensional Heat Conduction
刘子文, 朴春德, 谢亮, 李斌, 杨大帅, 潘东玥
一维热传导, 温度分布, 温度梯度One-Dimensional Heat Conduction, Temperature Distribution, Temperature Gradient
《Advances in Geosciences》, Vol.6 No.2, 2016-04-21
In order to study the relationship between the changes of linear heating device testing point temperature and heating time in the heat transfer process, we study the relevance between radiation values E and the power P at the center of the heating device. Based on the nature of the surrounding conductive medium, we derived one-dimensional heat conduction model which considered the time delay parameters. We verify the suitability of the theoretical model through laboratory experiments by heating bar arrangement. The results show that test point temperature slope is gradually reduced and stabilized when the test point temperature difference gradually rises in the effect of heat conduction. Through the measured temperature values compared with theoretical calculations, it showed that the maximum relative error reached 20% in early experiments, but the temperature difference decreased and tended to zero with the increase of heating time and source of power, showed that theoretical formula derived realistic in this paper.