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针对三氟碘甲烷的物性数据十分缺乏 ,不能满足进一步研究和应用需要的问题 ,该文用实验的方法对三氟碘甲烷的饱和蒸气压进行了研究。实测得到了从 2 88～ 336 K范围内的 2 6组三氟碘甲烷的饱和蒸气压数据 ,这些实验数据的压力测量不确定度在± 780 Pa以内。由实验数据拟合得到了三氟碘甲烷的蒸气压方程 ,实验值与方程计算值之间的标准偏差小于 0 .0 5 1%。应用该方程外推得到了三氟碘甲烷的临界压力 ,导出了三氟碘甲烷的汽化潜热方程。该文的实验数据和研究结果为进一步开发绿色环保制冷剂打下了良好的基础。
The data about the physical properties of trifluoroiodomethane are very scarce and can not meet the need of further research and application. The saturated vapor pressure of trifluoroiodomethane has been studied experimentally. The saturated vapor pressure data of 26 groups of triiodomethane from 2 88 to 336 K were measured. The uncertainty of pressure measurement in these experimental data was within ± 780 Pa. The vapor pressure equation of trifluoromethane iodine was obtained from the experimental data. The standard deviation between the experimental value and the calculated value was less than 0.05%. The critical pressure of trifluoroiodomethane was extrapolated using this equation and the latent heat of vaporization of trifluoroiodomethane was derived. The experimental data and research results in this paper lay a good foundation for further developing green refrigerants.