| 范德瓦尔斯氮气的低温热力学性质研究 |
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| 引用本文： | 刘国跃,龚劲涛. 范德瓦尔斯氮气的低温热力学性质研究[J]. 低温工程, 2009, 0(3) |
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| 作者姓名： | 刘国跃 龚劲涛 |
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| 作者单位： | 绵阳师范学院物理与电子工程学院,绵阳,621000 |
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| 基金项目： | 四川省教育厅重点科研项目 |
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| 摘 要： | 采用热力学方法,根据实验测得的氮气的维里系数,导出了氮气的范德瓦尔斯系数a、b.结果表明,实验方法得到的范德瓦尔斯系数与临界参数(Vc,Tc,Pc)确定的范德瓦尔斯系数有明显差异,在低温(90 K-250 K)区,范德瓦尔斯系数随温度改变有显著变化,这些变化对低温氮气的状态方程和热容量等重要热力学性质的影响是显著的.如果不考虑这些变化,可能导致不合理的错误结果.
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| 关 键 词： | 低温氮气 范德瓦尔斯系数 低温 热力学性质 |
Study on thermodynamics properties of Van de Waals nitrogen gas in low temperature |
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| Liu Guoyue,Gong Jintao. Study on thermodynamics properties of Van de Waals nitrogen gas in low temperature[J]. Cryogenics, 2009, 0(3) |
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| Authors: | Liu Guoyue Gong Jintao |
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| Affiliation: | Department of Physics & Electronic Engineering;Mianyang Teacher's College;Mianyang 621000;China |
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| Abstract: | Based on the thermodynamics method and using the measured virial coefficients of nitrogen gas,Van de Waals coefficients a and b of nitrogen gas were obtained.The results show that the measured Van de Waals coefficients(a,b) are different from the ones(a 0,b0) obtained by using critical parameters(Vc,Tc,pc).In the temperature region(90 K-250 K),the variation of the measured Van de Waals coefficients(a,b) are notable as temperatures changes.The variation obviously affectd the important thermodynamics properti... |
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| Keywords: | nitrogen gas in low temperature Van de Waals coefficients low temperature thermodynamics properties |
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