| 用瞬时法测定液体导热系数 |
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| 引用本文： | 王琮玉,郭藏生,杨孟林,马录,卢心中.用瞬时法测定液体导热系数[J].化工学报,1984,35(3):274-277. |
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| 作者姓名： | 王琮玉 郭藏生 杨孟林 马录 卢心中 |
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| 作者单位： | 西北大学热化学研究室
,西北大学热化学研究室
,西北大学热化学研究室
,西北大学热化学研究室
,西北大学热化学研究室 |
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| 摘 要： | 以珠状热敏电阻为加热元件,建立了用瞬时法测定液体导热系数的装置,在25℃下用乙二醇等7个标准样品,对该装置进行了标定,平均偏差为2%.为了核实装置和所得关系式的可靠性,又测定了13个已知导热系数的样品,多数偏差在2%以内,最大偏差为5%.单次测量的精度为0.2%.本文叙述了这一方法的原理,并对实验结果进行了讨论.
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Measuring Thermal Conductivity of Liquids by Transient Method |
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| Wang Congyu,Guo Cangsheng,Yang Menlin,Ma Lu and Lu Xinzhong
Thermochemical Laboratory,Northwest University.Measuring Thermal Conductivity of Liquids by Transient Method[J].Journal of Chemical Industry and Engineering(China),1984,35(3):274-277. |
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| Authors: | Wang Congyu Guo Cangsheng Yang Menlin Ma Lu and Lu Xinzhong
Thermochemical Laboratory Northwest University |
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| Abstract: | Using a small bead-in-glass thermistor probe as a heating element, an apparatus was developed for measuring thermal conductivity of liquids by the transient method. The apparatus was calibrated by using seven standard substances at 25℃, with an average deviation of measurements less than 2%. To check the reliability of this apparatus and the correlation proposed, the thermal conductivities of thirteen known liquids were determined. The experimental results showed that all deviations were within 2% except one which reached 5%. The precision of the apparatus is 0.2%.
This paper expounds the principle of the proposed method and discusses the experimental results. |
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