| 超流氦的Joule-Thomson系数研究 |
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| 引用本文： | 陈煜,鲁雪生,顾安忠. 超流氦的Joule-Thomson系数研究[J]. 低温与超导, 2004, 32(4): 19-21,10 |
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| 作者姓名： | 陈煜 鲁雪生 顾安忠 |
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| 作者单位： | 上海交通大学制冷与低温工程研究所,200030;上海交通大学制冷与低温工程研究所,200030;上海交通大学制冷与低温工程研究所,200030 |
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| 摘 要： | 超流氦的焦耳-汤姆逊系数在一定条件具有负值,且数值较大。由此产生的负焦耳-汤姆逊效应将会使其输送系统出现显著的温升,这一现象对于输送系统能否成功完成输送任务至关重要。如何确定He的Joule-Thomson系数,是判断He负焦耳-汤姆逊效应程度的前提和基础。文章通过直接状态方程法和热动力学公式法对He的Joule-Thomson系数进行了分析和计算,并在计算结果的基础上,拟合得到了便于工程应用的经验方程。
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| 关 键 词： | He Ⅱ 焦耳-汤姆逊系数 经验方程 |
| 修稿时间： | 2004-06-14 |
Study on the Joule-Thomson Coefficients of Superfluid Helium |
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| Chen Yu,Lu Xuesheng,Gu Anzhong. Study on the Joule-Thomson Coefficients of Superfluid Helium[J]. Cryogenics and Superconductivity, 2004, 32(4): 19-21,10 |
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| Authors: | Chen Yu Lu Xuesheng Gu Anzhong |
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| Abstract: | Generally, the Joule-Thomson coefficients of liquid HeⅡ are always negative and much higher than those of ordinary gases and liquids. The negative Joule-Thomson effect, which caused by negative Joule-Thomson coefficients, will lead to the temperature rise of the HeⅡ transfer system. Calculating the Joule-Thomson coefficients of HeⅡ is the precondition to determine the negative Joule-Thomson effect. In this paper, the calculation and analysis of the Joule-Thomson coefficients of liquid HeⅡ through the equation of state and thermodynamic identity are carried out and an empirical equation is obtained by curve fitting based on the results. |
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| Keywords: | HeⅡ Joule-Thomson coefficients empirical equation |
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