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| 摘要: |
| 选取五个比较常用的饱和蒸气压方程，利用二甲醚的两种文献数据分别拟合了各方程系数，五个关联方程与文献值的最大平均偏差为0．0793％，最小平均偏差为0．0205％，适用温度范围为文献蒸气压数据测试范围，关联方程式难于外推。选取了六种对应状态估算方法和一种对应态基团法用于估算二甲醚的饱和蒸气压，与两种文献值相比，七种估算方程的最大平均偏差为4．131％，最小平均偏差为0．190％，估算方程的适用温度范围广，预测性能强。 |
| 关键词: 二甲醚 饱和蒸气压关联方程 估算方程 DME 蒸气压方程式 对应状态法 基团对应状态法 |
| DOI： |
| 分类号:TQ223.24 |
| 基金项目:湛江市科技攻关计划项目(编号:2002046) |
|
| Comparison between Correlation Equations and Estimation Equation about Saturated Vapor Pressure of Dimethyl Ether |
|
Jia Mingsheng Lu Menglong Zheng Ganlin
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| Abstract: |
| Five common saturated vapor pressure equations are used in this paper and the fitting coefficients of each equation are given by two kinds of literature data about DME. The greatest average deviation between five correlation equations and literature data |
| Key words: dimethyl ether,vapor pressure,thermodynamic property,estimating method |
