三氟碘甲烷的新气相状态方程和输运物性

A NEW GASEOUS EQUATION OF STATE AND TRANSPORT PROPERTIES OF TRIFLUOROIODOMETHANE

提出了三氟碘甲烷（ＣＦ３Ｉ）的新蒸气压方程和新状态方程；给出了ＣＦ３Ｉ的偏心因子、正常沸点等物性参数，并与文献值进行了比较．使用毛细管粘度计测量了ＣＦ３Ｉ的２５３～３３８Ｋ的饱和液粘度，采用以钽丝为热线的双线瞬态热线法测量了ＣＦ３Ｉ的气相导热系数，并分别给出了关联式．

A new vapor pressure equation of CF3I was developed and the normal boiling point wasdetermined. A new gaseous equation of state of CF3I was developed to represent the PVTproperties, the maximum deviation and RMS deviation are 0.41% and 0.11% for pressureand 0.49% and 0.12% for density3 respectively. The saturated liquid viscosity of CF3I wasmeasured from 253 to 338 K using a capillary viscometer, the uncertainly was estimated tobe less than 13%, and the results was correlated as a function of temperature. The gaseousthermal conductivity of CF31 over the temperature range 265 to 336 K and pressure up toIMPa was measured in a transient hot--wire instrument employing two anodized tantalumwires as the heat source with an uncertainty of 13%, the results was correlated as a functionof temperature and density.