关键词: 单组分气液相平衡, 饱和蒸汽压, 湍流, 对比温度

Abstract: Six pure liquids，namely，water，ethanol，normal propyl alcohol，isopropyl alcohol，acetic acid，and acetone，were selected to be the experimental subjects of this research. Each one-component vapor-liquid equilibrium system was placed in a customized vessel and then rotated at a constant-temperature water bath shaking table. The experiments were conducted at eight different temperatures，from 10 ℃ to 80 ℃，with 10 ℃ intervals，and fourteen different rotating speeds，from 80 r/min to 210 r/min，with 10 r/min intervals. The deviation rate of the dynamic system pressure from the thermodynamic system pressure (R) in turbulence under experimental conditions could reach a maximum of 74.20%. A correlation of R，Reynolds number，and critical temperature was fitted by using experimental data. Based on the study results，a prediction was given that the dynamic statured vapor pressure could be twice of the thermodynamic one，as long as the degree of turbulence is sufficiently high.

Key words: one-component vapor-liquid phase equilibrium, saturated vapor pressure, turbulence, reduced temperature