| 确定酮、醛、醚和含氮化合物第二维里系数的新方法 |
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| 引用本文： | 孟龙,段远源,李雷. 确定酮、醛、醚和含氮化合物第二维里系数的新方法[J]. 工程热物理学报, 2005, 26(2): 185-188 |
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| 作者姓名： | 孟龙 段远源 李雷 |
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| 作者单位： | 清华大学热能工程系热能动力工程与热科学重点实验室,北京,100084;清华大学生物医学工程系,北京,100084 |
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| 基金项目： | 中国科学院资助项目;高等学校博士学科点专项科研项目 |
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| 摘 要： | 本文提出了一套新的用来确定酮、醛、醚和含氮化合物第二维里系数的新方法。在新的非极性流体预估式的基础上,应用对比态原理,给出了酮、醛、醚和含氮化合物极性流体的优化参数,并对其进行了经验关联,使本预估式能应用于大部分非氢键,弱缔合效应的极性流体。并且仅仅需要临界温度、临界压力、偏心因子和对比偶极距作为预估参数。预估结果与最新的高精度的实验数据符合得很好。
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| 关 键 词： | 维里系数 临界参数 非极性流体 极性流体 |
| 文章编号： | 0253-231X(2005)02-0185-04 |
| 修稿时间： | 2004-11-23 |
A NEW METHOD FOR DETERMINING SECOND VIRIAL COEFFICIENTS OF KETONE, ALDEHYDE, AETHER AND NITROGENOUS COMPOUNDS |
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| MENG Long,DUAN Yuan-Yuan,LI Lei. A NEW METHOD FOR DETERMINING SECOND VIRIAL COEFFICIENTS OF KETONE, ALDEHYDE, AETHER AND NITROGENOUS COMPOUNDS[J]. Journal of Engineering Thermophysics, 2005, 26(2): 185-188 |
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| Authors: | MENG Long DUAN Yuan-Yuan LI Lei |
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| Abstract: | A new method for determining second virial coefficients of ketone, aldehyde, aether and nitrogenous compounds was developed based on the corresponding-states principle. The new method gives a satisfactory prediction for polar compounds, with only a knowledge of the critical temperature, critical pressure, acentric factor and reduced dipole moment. Comparisons with the new, high-quality experimental data and existing models show that the correlation is more accurate, reliable and satisfactory. The results show that the present work is roughly equivalent to the Tsonopoulos correlation for such polar fluids. |
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| Keywords: | virial coefficients critical parameters nonpolar fluids polar fluids |
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