摘要
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。
Trifluoroiodomethane (CF 3I) has been considered as a promising alternative refrigerant worldwide, and was listed as such in the UNEP Report, but the available data for its thermophysical properties is very limited. In this work, twenty six vapor pressure data points for CF 3I were measured over the temperature range from 288 to 336K. The maximum total pressure uncertainty for this data was estimated to be within ±780Pa. This data and other data in the literature was used to develop a vapor pressure equation for CF 3I. This equation correlates the measured vapor pressure data with an error of ±0.051%. The critical pressure and the equation for the enthalpy of vaporization were determined using the vapor pressure equation. These results can be used to develop environmentally friendly alternative refrigerants.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2000年第10期77-79,共3页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金项目!(5 990 6 0 0 6 )
