| 应用相似理论计算碳氢化合物的热力学参数 |
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| 引用本文： | 李毅,王丰. 应用相似理论计算碳氢化合物的热力学参数[J]. 湖北汽车工业学院学报, 2012, 0(3): 44-48 |
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| 作者姓名： | 李毅 王丰 |
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| 作者单位： | [1]华南理工大学机械与汽车工程学院,广州510641 [2]北京航空航天大学,北京100191 |
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| 摘 要： | 为了计算各种化合物的热力学参数,应用相似理论,提出了用物质的"相对分子量"作为相似定数,综合了烷烃(CnH2n+2)、烯烃(CnH2n)和苯(CnH2n-6)等化合物的正常沸点Tb(压力为一个标准物理大气压时物质的沸点)与临界温度Tcr之比的实验数据,导出了这3种化合物Tb/Tcr与相对分子量之间的无量纲关系式。利用所导出的公式进行计算,其结果与实验值非常吻合,除极个别的相对误差为1%~2%外,其余绝大多数的实验值与理论计算值的相对误差均小于1%。
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| 关 键 词： | 相似理论 临界温度 沸点 相对分子量 |
Study on Calculation of Hydrocarbons Thermodynamic Parameters Basecl on Similarity Theory |
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| Li Yi,Wang Feng. Study on Calculation of Hydrocarbons Thermodynamic Parameters Basecl on Similarity Theory[J]. Journal of Hubei Automotive Industries Institute, 2012, 0(3): 44-48 |
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| Authors: | Li Yi Wang Feng |
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| Affiliation: | 1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China;2. Beijing University of Aeronautics ＆ Astronautics, Beijing 100191, China; ) |
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| Abstract: | In order to calculate the thermodynamic parameters of various hydrocarbons, based on the similarity theory, the relative molecular weight of the substance is used as similar constant.The critical temperature（Ter） and boiling point（T b） of alkanes（CnH2n＋2）, olefins（CnH2） and benzenes（CnH2n-6） are investigated. The corresponding dimensionless equations for Tb/Tcr and relative molecular weight of the three types of hydrocarbons are obtained. The calculating result by the derived formula is in good a- greement with the experimental data. The most relative errors of the theoretical calculations and exper- imental values are below 1% with the exception of a few 1%-2% relative errors. |
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| Keywords: | similarity theory critical temperature boiling point relative molecular weight |
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