As can be seen from Figure 2.3, the viscosity of carbon dioxide increases with the increase of temperature, which is also in line with the viscosity property of gas. When the temperature is low, its viscosity hardly changes with the change of pressure, but when the temperature exceeds about 10℃, its viscosity will decrease due to the increase of pressure. Like density, the viscosity of carbon dioxide will change greatly in supercritical state. When the pressure exceeds 7.38Mpa, its viscosity will decrease rapidly, far less than that in liquid state and almost equal to that in gas state, which will greatly reduce the friction of the medium in the pipeline and be more conducive to pipeline transportation.
正在翻译中..