| 修正的硬球三参数状态方程(Ⅰ)计算流体的饱和性质 |
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| 引用本文： | 李平,许志宏.修正的硬球三参数状态方程(Ⅰ)计算流体的饱和性质[J].化工学报,1993,44(2):129-135. |
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| 作者姓名： | 李平 许志宏 |
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| 作者单位： | 中国科学院化工冶金研究所计算机化学开放实验室,中国科学院化工冶金研究所计算机化学开放实验室 北京100080.天津大学化工系
,北京100080 |
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| 摘 要： | 对硬球三参数状态方程(CSPT)引力参数的温度校正系数α和拟临界压缩因子(?)提出了新的温度关系式.用修正的CSPT方程(MCSPT)计算了105种纯物质的饱和性质.结果表明,新的方程改善了原CSPT方程在低对比温度下物质的饱和性质,以及临界区域内热力学性质的计算精度.并用于计算超临界状态下物质的热力学性质,有良好的外推性.
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| 关 键 词： | 状态方程 饱和 性质 流体 计算 |
A MODIFIED HARD-SPHERE THREE -PARAMETEREQUATION OF STATE ( I ) FOR CALCULATING SATURATED PROPERTIES OF FLUIDS |
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| Li Ping and Xu Zhihong.A MODIFIED HARD-SPHERE THREE -PARAMETEREQUATION OF STATE ( I ) FOR CALCULATING SATURATED PROPERTIES OF FLUIDS[J].Journal of Chemical Industry and Engineering(China),1993,44(2):129-135. |
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| Authors: | Li Ping and Xu Zhihong |
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| Affiliation: | Li Ping and Xu Zhihong
(Institute of Chemical Metallurgy,Academia Sinica,Beijing ) |
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| Abstract: | New temperature - dependencies are proposed for both the pseudocritical compressibility factor ξc and the temperature correction factor of the attractive parameter α inthe original CSPT equation. This modification yields accurate calculations of saturated properties at a low reduced temperature and of thermodynamic properties near the critical region. Excellent results are alse obtained in predicting thermodynamic properties of supercritical fluids. |
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