| 高精度全氟甲烷R14饱和蒸汽压测定及关联 |
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| 引用本文： | 余国保,郭开华,李廷勋. 高精度全氟甲烷R14饱和蒸汽压测定及关联[J]. 化学工程, 2010, 38(2) |
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| 作者姓名： | 余国保 郭开华 李廷勋 |
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| 作者单位： | 中山大学,工学院,广东,广州,510006;中山大学,工学院,广东,广州,510006;中山大学,工学院,广东,广州,510006 |
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| 基金项目： | 中山大学-BP液化天然气中心资助项目(99103-9390001);;广东省教育厅液化天然气低温技术重点实验室项目(39000-3211101) |
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| 摘 要： | 在141.76—225.71 K温度条件下,运用高精度(温度精度为±0.01 K,压力精度为±0.01%)可视化汽液相平衡装置测量了30组全氟甲烷(R14)的饱和蒸汽压实验数据,并分别运用Wagner方程,朱明善提出的改进Wagner方程及项-谭提出的方程对实验数据进行拟合。对计算值和实验数据进行对比分析,前2个方程计算结果较为接近,朱明善改进型方程略优,项-谭提出的方程误差最大。通过拟合得到上述温度范围内的较高精度的饱和蒸汽压方程。
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| 关 键 词： | 高精度 全氟甲烷 饱和蒸汽压 关联 |
High-precision measurement and correlation of saturated vapor pressure for tetrafluoromethane R14 |
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| YU Guo-bao,GUO Kai-hua,LI Ting-xun. High-precision measurement and correlation of saturated vapor pressure for tetrafluoromethane R14[J]. Chemical Engineering, 2010, 38(2) |
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| Authors: | YU Guo-bao GUO Kai-hua LI Ting-xun |
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| Affiliation: | School of Engineering;Sun Yat-sen University;Guangzhou 510006;Guangdong Province;China |
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| Abstract: | 30 points of saturated vapor pressure data of tetrafluoromethane R14 were measured by using high-precision(temperature precision is ±0.01 K, pressure precision is ±0.01%) visual vapor-liquid equilibrium measurement at 141.76-225.71 K. The measured experimental data were correlated respectively by Wagner equation, Wagner-type equation improved by Zhu Mingshan and another equation proposed by Xiang and Tan. The correlated data of the former two equations agree well with the experimental data and both are superior to the equation proposed by Xiang-Tan. The high-precision vapor pressure equations were built through correlation within the above corresponding temperature range. |
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| Keywords: | high-precision tetrafluoromethane saturated vapor pressure correlation |
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